NIPPON KOSHUHA STEEL GROUPNippon Koshuha Steel Co., Ltd.

Koshuha Foundry Co., Ltd.Koshuha Precision Co., Ltd.

Koshuha All Metal Service (KAMS) Co., Ltd.

CORPORATE GUIDENIPPON KOSHUHA STEEL GROUP

10081000KBS-P

Corporate Phi losophyCorporate Phi losophy

The Nippon Koshuha Steel Group is part of the Kobe

Steel Group, and comprises a number of companies

producing high quality, high-grade special steels,

ductile cast iron, dies, tools and other products. Our

products are used as component parts or as

manufacturing equipment, primarily in the auto and

aerospace industries, the electronics industry, and in

industrial machinery. The supportive roles they play

often go unseen by the general public, but they

consistently earn top marks from our customers for

their reliable, high-quality performance.

Production is backed by an innovative approach to

technical development that has always been part of our

management policy. Our goal is to pursue the

development of cutting-edge technologies that, when

used in production, generate new levels of quality that

will bene�t society as a whole.

Conscious of our ever-changing world and the

growing sophistication of its requirements, we at

Nippon Koshuha Steel Group are always ready to take

on new challenges as we play our specialized role in

many industrial �elds.

Masahiro KawasePresident,Nippon Koshuha Steel Co., Ltd.

CONTENTS

Meeting Complex Needs and Earning TrustThe Nippon Koshuha Steel Group has a long history in Japan as a leader in the business of specialized steels, and has worked hard to stay ahead of the competition through the development of new products and technologies. Group companies possess expertise in a broad spectrum of industrial production that includes tool steel, special alloys, bearing steel, castings, metal molds and tools, and distribution, all of which enjoy high customer acclaim.

It goes without saying that upholding the overall strength of a Group such as this takes both passion - a passion for our business, passed on through the generations - and the combined input of each of our employees.

In order to continue meeting the ever more sophisticated needs of customers amid changes in the economic environment, the Nippon Koshuha Steel Group concentrates its resources in selected fields. Through an ongoing shift to higher value-added product areas, we will further boost our technical competitiveness while continuing to strengthen our corporate position.

Specialized steel products are fundamental to so many industries, and our role as a major supplier is likely to grow even more important in the future. Our approach will always be focused on working in harmony, and developing together with individuals, communities and the global environment. Through our wide-ranging business operations, we at the Nippon Koshuha Steel Group aspire to play our part as good corporate citizens and retain the trust of society at large.

Management Principle:To contribute to the building of an affluent society where lifestyles are harmonized with the environment, by supplying products with wide appeal.

Code of Conduct1 We discharge our mission as a responsible corporate group within wider society. We contribute to society through innovative products and technologies. We believe in the importance of both quality manufacturing and the fostering of human resources.

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Koshuha at a Glance…………………………………Outstanding Products 1 Auto Industry……………Outstanding Products 2 Others……………………Production Processes ………………………………Research and Development, Quality Control……Special Steels…………………………………………Casting …………………………………………………Dies and Tools…………………………………………Steel Material Sales, Machining, Heat Treatment,Surface Treatment………………………………………Corporate Social Responsibility……………………

An Innovative Approach to Technical Developmentfor the Manufacture of Steel ProductsThe Nippon Koshuha Steel Group's high-grade product lines achieve new levels of quality

Koshuha at a GlanceNippon Koshuha Steel Group: Overview

KOSHUHANippon Koshuha Steel Group

The Nippon Koshuha Steel roup meets a broad range at requirements related to special steels in four different fields.

Special steels are the common component of the roup s activities. Nippon Koshuha Steel manufactures

forged steel products, steel wire, wire rod and bar, and secondary-processed products. To satisfy customer needs, KAMS provides fully integrated services that include steel material machining, heat treatment, surface treatment, and logistics. Cast products of the high and consistent quality vital to vehicle and machinery production are made at Koshuha Foundry. ltra-high- precision, long-life molds and tools are manufactured at Koshuha Precision.

Special Steels

Casting

Dies and Tools

Steel Material Sales, Machining,Heat Treatment, Surface Treatment

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KAMS offices: Ota, Yokohama, Atsugi, Okaya, Imizu, Seto, Nishinomiya

Fully integrated services that range from machining to heat treatment, surface treatment, and logistics

Three-dimensional measuring

Heat treatment equipment

Koshuha Foundry Co., Ltd. (Hachinohe)

Molding line

Koshuha Precision Co., Ltd. (Ichikawa)

eliable and precise tools with long service life

KAMS offices

Nippon Koshuha Steel (Imizu, Toyama Prefecture)

Nippon Koshuha Steel Headquarters(Chiyoda Ward, Tokyo)

Koshuha Foundry(Hachinohe, Aomori Prefecture)

Koshuha Precision(Ichikawa, Chiba Prefecture)

KAMS (Ota, unma Prefecture)

Materials that support technical advances in vehicles and production machinery

An Integrated System of Development, Manufacturing and Sales, Centered on four Production Bases for Special Steels

Nippon Koshuha Steel Co., Ltd. Toyama Works

Manufacture of high quality steels based on advanced production technology

Textural composition control technology for products of various sizes

Dimensionally accurate, micro-precise production

Superior products manufactured with time-tested shaping and processing technologies

lectric arc furnace 000-ton press Block mill for finishing wire rod Turbine shaft

Steelmaking Forged steel products Steel wire, wire rod and bar Secondary processed products

Top Class Technologies and ProductsOutstanding Products 1 Nippon Koshuha Steel Group's Technologies and Products for the Auto Industry

Nippon Koshuha Steel Group's products are widely used in the auto industry. We have developed manufacturing and processing technologies to produce the best possible steels to meet individual requirements for components used in engines, drive shafts and wheel assemblies Our dies and tools increase efficiency and cut costs in manufacturin processes, and are widely acclaimed by our customers.

Molds for connecting rods

Welding materials

Piston rings Heat-resistant bolts

Tappet rollers Spark plug components

Molds for crankshafts

Slit punches

Special steelsCastingsDies and tools

Punch holders for constant-velocity ball joints

Dies for differential gears

Brake calipersMolds for aluminum wheels

Engine

Wheel-Assembly

Drive Shaft

Others

Blanking dies for brake pads

Dies for synchro gears

Differential gear cases Pressure plates

Steering components Differential unitsFillet rollers

Connecting rod

Spark plug

Aluminum wheels

Castings

Castings

Diesand

tools

Diesand

tools

Diesand

tools

Diesand

tools

Specialsteels

Specialsteels

Specialsteels

Specialsteels

Blanking dies for auto-matic transmission plates

Dies for torque converter clutches

Punches for molding starter motor clutches

Hydraulic hose mouth ring calking tools

Stainless steel bearing materials

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KDA1S die-cast steel with outstanding durability under high temperature conditionsFeaturing the durability required for die-casting, KDA1S steel also has an ultra fine, uniform structure, is heat chec resistant, and demonstrates e cellent machinability, tou hness and heatsoftenin resistance after uenchin and temperin s the new standard for hot wor in tool steel, it is a product with

reat future potential

Products and Expertise Developed by Nippon Koshuha Steel Group

High-strength, cold-headed/cold-pressed NK Rings maintain fiber flowsed in auto en ines, in s are cold pressed into shape without severin the fiber of the

wire material so that they maintain full material stren th for a lon service life his product is hi hly popular with many automa ers

Gate Pecker for casting gate separationhe ate ec er was developed for caster applications eaturin ultra hi h pressure hydraulics that ma e easy wor

of ate brea in , it boosts productivity and improves operatin environments ate ec er is currently used in countries worldwide Miniature bearings that guided the Apollo spacecraft to the moon's surface

ust two apanese-made products were included in the e uipment and materials used in the ppolo spacecraft, which made the historic moon-landin in One was the material made by ippon oshuha teel for miniature bearin s used in the craft s yro-positionin system Our miniature

bearin steel has a reputation for superlative uality and boasts the bi est mar et share in apan

he ippon oshuha teel roup s reatest stren th lies in its lon standin innovative approach to technolo y, and we ta e pride in the hi h performance products and technolo ies that we have developed ontinuin this tradition, we en a e in the on oin challen e of tappin the full potential of special steels

ENDURE 900 wear-resistant cast steel features an unprecedented hardness of 900Hv.

eveloped ointly with obe teel, ndure achieves a hardness of v the hi hest yet attained in steel materials throu h the control

of a martensite layer inside the hi h chromium cast steel structure　 promisin material for wear resistant liners, transport rollers and similar applications, has captured enthusiastic attention abroad

Fillet rollers for crankshaftsoday s auto en ines are more compact and powerful than ever

before, creatin the need for stron er and more reliable cran shafts Our fillet rollers dramatically improve stren th and fati ue resistance by rollin the corner of the cran shaft s a result, our hi h fre uency precision rollers and cassettes command the lar est share of the apanese mar et in this field

HICOAT Series of throw-away chips made from high-speed steel

e manufacture throw away chips of hi h speed steel, and are apan s sole supplier he hi h speed steel material has

e cellent pliability, and is ideal for intermittent machinin or pipe cuttin he i coatin e tends chip life, allowin continuous automatic operations

World'sHardest

LaborSaving

Only One Products

Top MarketShare

DependableDurability

Top MarketShare

ctual si e

Top Class Technologies and Products

High-performance special steel makes historyThe 'phantom' ice pickn the difficult years immediately followin orld ar , the oyama or s turned to trial pro

duction of consumer products such as ra ors, sic les and hatchets to maintain company operations and support employees livelihoods nder the uidance of aruyoshi nno of o yo

o itsu anso, apan s first retail supplier of mountain climbin oods , we also tried ma in ice pic s for mountain climbin use 　 he special steel used to ma e the ice pic s was the same material previously used for the wheel supports of ero fi hter aircraft he ice pic s characteristic feature is the curved shape of its head, which firmly encloses the wooden shaft to produce a handsome, well balanced tool　 roduction was soon halted, however, because there was no prospect of the venture bein profitable n later years, this phantom ice pic attained mythical status amon mountaineers both for its superb uality and its rarity n e emplary product made of ippon oshuha teel s hi h performance special steel, it represents one interestin chapter in the company s history

Long Life

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″″

Outstanding Products 2

KD11MAX Microfine Steel delivers excellent durability, machinability and heat treatment dimensional change characteristics

old wor in tool steel provides superior durability and machinability e ceedin those of conventional products, and also demonstrates reduced dimensional chan e when heat treated his steel is hi hly acclaimed amon automa ers, mold ma ers and other manufacturers for its capacity to si nificantly enhance mold production efficiency

Premier Performance

Production Process "Koshuha" literally means high frequency. What exactly is "high-frequency steel"?In 1934, Hideyuki Kikuchi, who worked at the Central Testing Institute of the South Manchurian Railway Company, invented a steelma in method called hi h fre uency electric shoc refinin his prompted the foundin of our company s forerunner,

ippon oshuha eavy ndustries 　 he hi h fre uency electric shoc refinin method uses hi h fre uency electric current to instantaneously reduce the iron o ide in iron ore he introduction of this method made it possible for the first time to use powdered iron ore as a raw material in blast furnaces, thereby contributin reatly to broadenin the demand for special steels

Machining

Induction furnace Holding furnace Spheroidal graphitization treatment

Sand mixer

Automatic molding machine

（Sand recovery）

Casting Mold removal Drum coolerGate separating

Shot blast Finishing

Heat treatment furnace

Pig iron

Scrap

Quartz sand

Core

Caking material

Return iron

Shipping

Alloy ironElectric arc furnace Ladle refining equipment(ASEA-SKF) Blooming mill Medium and

small-sizedrolling mills

Billet care and cleaning

Block mill

(Continuous) Annealing furnace

Heat treatment Acid pickling

Bar processing Heat treatment furnace

Bar Processing

Wire drawing machine

Wire rod

Steel wire

Rolled wire rods

Rolled rectangular rods

Drawing steel bar

Cold finished steel bar

Lathe turning steel bar

Forged steel product

Forged steel product

Processed products

(Car) Annealing furnace

Forging press

Vacuum degasification equipmentVacuum oxygen decarburization equipment

Ingot-casting equipment

High-frequency induction furnace

ESR furnace Vacuum induction melting furnace

Return steel

Scrap

Special steels and alloys

Castings

Dies and tools

Material cutting

Material cutting

● Cutting tool

●Dies parts

CNC lathe Machining center

Mealing Hole tap

Heat treatment

Wire electric discharge Diesinking electric discharge Jig grinding

Surface grinding

Projection grinding Tool grindingNC grinding

NC grinding

Surface treatment（Coating）

Three dimensional measuring inspectionPrecision die parts

Cutting tools Tool microscopic measuring inspection

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Blast furnace Converter Continuous

casting Rolling

（Kobe Steel）

Special steels and alloys(Nippon Koshuha Steel)

Composite design technologiesSolidification control technologiesHot processing technologiesCold working technologiesCutting technologiesHeat treatment technologies

Castings(Koshuha Foundry)

Mold design technologiesFluid process technologiesHot solidification process technologiesStructure testing technologiesHeat treatment technologies

Dies and Tools(Koshuha Precision)

Design technologies Grinding technologies Wrap finishing technologies Mold assembling technologiesMeasuring technologies Expertise in material properties Simulation technologies

Research and Development Quality Control

To meet requirements for various special steel products, the Nippon Koshuha Steel Group has long promoted comprehensive research and development, covering everything from the design of new steel types to steelmaking, forging, rolling, casting and precision processing.　 n the fields of special steels and alloys, we build on metallur y technolo ies established over many years to maintain a superlative level of quality, with developments that include composite design simulation for new types of steel and heat treatment experimentation. In the realm of casting, we focus on the development of casting simulation and heat treatment technologies, as well as on processing control and simulation technologies for dies and tools. This high-level research and development provides the foundation for the high-performance and high value-added products we manufacture. 　Using state-of-the-art measuring equipment, we also employ rigorous quality control system to ensure that the performance and dimensional precision of our products will completely satisfy our customers.

lectron probe micro analy er

Comprehensive Technical Skill Underlying Everything We Do-from the Development of Different Types of Special Steel, to Steelmaking, Forging, Rolling, Casting, and Precision Processing

e desi n optimi ed alloys and develop new steel types through calculated phase diagram simulations

Diagrammatic composite designs

This furnace is used to evaluate the characteristics of our special steels and alloys.

Vacuum induction test furnace

e use this furnace to analy e structural chan es in metal during heat treatment, and to develop new methods of structural control and new heat treatment technologies.

Vacuum treatment furnace

his system simulates the ow and solidification of cast metal, ma in it possible to desi n optimi ed castin molds

System for analyzing the flow and solidificationcharacteristics of cast metal

o ensure hi h precision and stable product uality, we use these instruments to conduct both

three-dimensional and contour measurements.

Coordinate measuring instrumentsFinal adjustments are made to the metal molds after they are tested in this press.

500-ton testing press

Composite Design Technology

Heat Treatment Technology Casting Simulation

Measuring Technology Quality assurance for metal molds

<Special Steels and Alloys>

<Castings>

<Dies and Tools>

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Steel wire, wire rodand bar Forged products

Steelmaking

Secondary processing

[Materials] [Forms]Tool steelsHigh speed steelsCarbon and alloy steels for machine-makingSuperalloys Heat-resistant steels

Nickel alloysStainless steelMaraging steelsBearing steelsTitanium alloys

Forged productsSteel wire/wire rodRolled barsRolled rectangular rodsProcessed wires Machine-processed products

Special steels are at the core of the Koshuha Group's business operations. Using advanced technical expertise acquired over many decades of experience, we produce high-quality special steels through a thoroughly integrated manufacturing system that includes steelmaking, forging, rolling, machining and heat treatment. 　We manufacture a wide range of steel types, including tool steel, special alloys and bearing steel, which we can supply in such forms as forgings, wire rod and bar material for use in many different applications. In addition, our heat-resistant and stainless steel products, which require extremely specialized characteristics, are used extensively in such advanced fields as the automotive and electronics industries.　In manufacturing these special steels, we begin by melting and refining our raw materials to remove impurities and achieve the desired chemical composition and quality. We then cast the steel into ingots, which are subsequently forged or bloomed into products of various shapes and sizes.

Production Flow Chart for Special Steels and Alloys

Nippon Koshuha Steel Toyama Works (Imizu, Toyama Prefecture)

Melting/refining

RollingBlooming Cold working/heat treatment/pickling

Heat treatment/machining

Blooming Blooming millIngots are heated and rolled to form billets.

Ingot-making Ingot casting facilityRefined molten steel is poured into molds to form ingots.

Forging 3000-ton pressIngots are forged in a range of presses to create high quality forged steel products.

Refining Ladle refining facility (ASEA-SKF)Refined steel is produced using refining technology that was developed for bearing steel.

Inspection

Shipping

Forging

Melting Electric arc furnace

The molten steel has very few impurities or inclusions.Melting Vacuum induction melting furnace

Base ingredients of return steel and alloy iron are melted at high temperature to adjust material composition.

With High-grade Production Technologies and Strict Quality Control, We Create the Finest of High-grade Special Steelsand Alloys

Special Steels - Operations

Ingot making

Division Facilities

Main Facilities

40-ton and 10-ton electric arc furnacesEx-furnace refining equipment (ASEA-SKF)Vacuum decarburization equipment (VOD)2-ton and 0.3-ton vacuum induction furnaces3-ton and 1-ton ESR furnaces, 3-ton and 1-ton high-frequency induction furnaces

Steel-making

Forging

Rolling

3000-ton, 1500-ton and 1000-ton high-speed hydraulic presses

Three-high blooming mill

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Special Steels - Operations

An Integrated Manufacturing System forVarious Products, Including Steel Wire, Wire Rod and Bar Material

The integrated manufacturing system at our Toyama Works performs secondary processing on our special steels and alloys.　We use blooming mills, bar, wire and plate rolling mills to manufacture products in many different shapes. When rolling wire rod, we use a three-roll block mill (made by

O mb o , the first of its ind to be used in a finish rollin line in apan his enables us to produce wire rod with excellent dimensional precision. 　The processed products are then heat treated in our continuous wire-rod annealing furnace, vacuum furnace, bright annealing furnace and other facilities. Our pickling and washing lines incorporate both in-line and batch-type equipment that allow us to achieve appropriate surface conditions during processing.

inally, we use analy ers, ultrasonic aw detectors and other advanced equipment to ensure product quality before shipment to customers.

Melting/refining Ingot making

RollingBlooming Cold working/heat treatment/pickling

Heat treatment/machining

Heat treatment Batch-type, hydrogen-atmosphere annealing furnace

Heat treatment　Heat treatment of special alloysQuality disparities are eliminated through the heat treatment of wire rod and bar material.

Inspection　Atomic absorption photometerProducts are shipped after their chemical content has been analy ed to verified hi h uality

Inspection　Scanning electron microscope with EDXSurface inspection is another way we ensure the reliability of our products.

The furnace atmosphere is carefully controlled to produce wire rod with superb surface quality.

Inspection

Shipping

Forging

Rolling Wire-rod finish rolling in 3 direction

Used to process billet into wire rod and bar material

3-rolls block mill provides superior wire rods with dimensional precision.

Cold working Continuous wire drawingThe rolled wire rod is drawn into steel wire.

Rolling Rolling mill

The pickling process removes any oxides attached to the sides of the wire rod and forms a protective film

Pickling　Special pickling facilitiesStraight bar is produced by drawingCold working Combined machine

Main Facilities

Facilities

Medium-sized and small rolling mills　φ124-φ13Wire rod block mill　φ12.5-φ5.5

coiler ontinuous wire drawin mill with automatic aw removalContinuous wire-drawing mill, single-head wire-draw-ing mill, wire-rod planer, pickling equipment

Combined machine, bar straightener, bar planer

BTA-type drill, automatic honing machineCNC lathe, machining center

Continuous wire-rod annealing furnace, continuous barannealing furnace, vacuum annealing furnace

naly er, material testin e uipment, ultrasonic aw detector

Division

Rolling

Wire-rodprocessing

Bar-materialprocessing

Machining

Heattreatment

Inspection

Production Flow Chart for Special Steels and Special Alloys

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Cold-forged metalmolds and tools

Tool steel is used to make metal molds and tools that are used to process various metals such as steel, aluminum and copper into a wide range of shapes. To increase the durability of metal molds and machining tools, tool steel must be heat-resistant, wear-resistant and tough. It must also have excellent machinability and stay dimensionally stable when subjected to heat treatment.　Our microfine special steel has earned an international reputation as a high-grade tool steel that meets all of these requirements. It has been made with carefully selected raw materials that have been refined, tempered, hot-processed and heat treated using our proprietary technologies to ensure the ver highest quality.

Hot-forged metalmolds and tools

Forged square bar

Forged round bar

Rolled horizontal angle

Cold press

Hot-forged press mold

Diecast products(Photos courtesy of the Japan Diecasting Association)

Container tires

Extruded products (window sash)

Extruded products

Drills, end mills, hobs, broaches,and other cutting tools

End mills

Forming rolls

Products for steel-cutting tools,woodcutting tools and blades

Metal molds for plastic

Stems

Special Steel Products - Tool Steel

Hot-forged tools are used under harsh conditions and must have a wide range of characteristics, including outstanding heat resistance, high strength, and excellent toughness.

Cold-forged tools must have excellent wear resistance and toughness even under high-load stress.

High-quality Tool Steel Adds Value to Products and Improves Production Efficiency

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pecial alloys are used in many fields ran in from everyday household oods to electronics and aerospace e uipment oshuha manufacturers many hi h performance alloy materials, includin steel wire made from rolled wire rod, polished bar material, and pressed parts 　 i h performance materials with a variety of speciali ed characteristics are in hi h demand, particularly in cuttin ed e fields where technolo y is rapidly evolvin o answer this need, our production system can uic ly and effectively handle small lot orders for hi hly speciali ed products, with an inte rated approach that e tends from a meltin process that utili es e clusive constituent desi n throu h e trusion, pressin and machinin

Wire rod

teel wire ressed products

ar material

Aerospace

Electronics

Nuclear Power

Energy

Everyday Goods

Household Appliances

Rod end

pindle motor

Special Steel Products - Special Alloys

e offer lead wire material that increases the service life and reduces the ener y consumption of li ht sources for li uid crystal display televisions

e also produce weldin materials with e ceptionally hi h corrosion resistance that are used in such speciali ed applications as nuclear power plants

Our Special Alloys Are Manufactured Using Koshuha's Proprietary Technologies and Used for a Wide Range of Applications

e produce materials for aerospace applications that must satisfy demandin re

uirements for hardness and durability

e manufacture material for hard dis drive parts that must feature outstandin corrosion resistance and machinability

Our titanium material is used to ma e lasses frames that are li htwei ht

and corrosion resistant, and remain beautiful even after years of use

Our hi h performance weldin materials feature the low temperature tou hness, corrosion resistance and stren th necessary for weldin

tan s

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Cast components are essential in the increasingly complex and continually evolving automotive and construction machinery industries. Focusing on ductile cast iron, Koshuha Foundry manufactures a wide variety of products ranging from ordinary and special alloy cast iron to equipment used in casting plants. We use carefully selected, high-quality raw materials, and production lines that are set up in accordance with customer requirements. A fully integrated computerized production control system covers the whole process from receipt of order throu h to final shipment Our products are used across the industrial spectrum, from construction and civil engineering to semiconductors, and we continue to explore new methods of casting to meet ever more sophisticated customer needs.

Casting production flow chart

Melting Casting Mold removal Shot blasting

Shipping

Molding Heat treatment Machining

Reliably Meeting Society's Needs by Contributing to Industrial Advancement

Casting - Operations

Finishing

Testing

Pig iron and scrap are melted at high temperature to supply molten steel of consistent quality via a holding furnace.

Melting High-frequency induction furnace

This line molds products up to a maximum of 3 tons in weight and can also handle ENDURE 900 and other types of alloy cast iron.

Molding Self-hardening fran resin molding lineOffers reater value added products that meet sophisticated customer requirements.

Machining Planer-type machining center

Designed for versatility, the molding line can accommodate orders of various sizes.

Molding Air impact automatic molding line

Koshuha Foundry Headquarters & Plant (Hachinohe, Aomori Prefecture)

O certifiedDivision

Melting

Molding

Coremaking

Sandprocessing

Productprocessing

Testing,etc.

Facilities

5-ton high-frequency induction furnaceton mid fre uency induction furnace

6-ton, 5-ton, 3.5-ton low-frequency induction furnaces20-ton low-frequency induction holding furnace

O automatic moldin lineAir impact automatic molding lineSelf-hardening fran resin molding line

Cold box automatic core-making machineShell automatic core-making machineSelf-hardening automatic sand core-making machine

3 mixers; pre-processing equipment

CNC barinder grinderShot blasterCar bottom heat treatment furnace Machining equipment

Fluorescent X-ray analysis equipmentMagnetic particle and ultra-sound testing equipment 3D measuring equipmentCAD/CAM system

[Materials] [Areas of demand]

ENDURE 900

Alloy castings

Auto industry

Construction machinery

Industrial machinery

Construction and civil engineering

Machine tools

Semiconductor manufacturing equipment

Main Facilities

■

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Cast iron parts used in construction and industrial machinery must be durable to withstand heavy loading and reliable even after extended use. Depending on the application, they may also require strength, wear-resistance and the ability to dampen vibration. To meet these needs, we manufacture cast iron with special additives, or use heat treatment and other processes. We also utilize advanced casting technologies to economically fabricate products with complex shapes, as well as large, single items that provide excellent performance.

Utilizing Casting Technologies ThatGreatly Improve Product Performance

Casting - Products

One-switch operation fa-cilitates gate separation for all types of castings.

Construction machinery and industrial machinery

The Gate Pecker casting gate separator was developed to meet the needs of casters. It uses ultra-high-pressure hydraulics to make light work of gate breaking and is designed for easy use and maintenance.

Gate Pecker

Costs are reduced by casting complex hydraulic circuit components that are difficult to produce by machinin

Excavator parts

We supply easily machinable cast parts with outstanding strength and durability.

Hydraulic equipment parts, crawler parts

Parts for injection molding equipment

These components are designed to dampen vibration and noise. We also make components that contain special alloys to increase heat resistance.

Components for vehicles and shipping

Complex shapes can be fabricated in one piece so that partial thickness reduction and rib reinforcement can contribute to lighter weight.

The Gate Pecker is a ground-breaking tool used in more than 800 plants in 13 countries around the world.

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[Dies] [Special tools]Precision die parts (punches, dies)

Dies for cold and hot forging

Detachable dies

Ultra-hard dies

Standard die parts (punches, hardened plates)

Fillet tools (rollers, cassettes, etc.)

olls feed rolls, fin rolls, etc

Can-making tools (punch sleeves, draw dies, etc.)

Tools for springs (quill liners, wire guards, etc.)

Compression tools (form rolling dies)

Shearing blades (sharp blades, cutting knives)

Various machinery parts

[Cutting Tools]Finishing tools

Bladed tools

HSS coating tips

Precision tools(forming tools, circular tools, recessing tools)

Koshuha Precision Co., Ltd. manufactures high-quality precision dies, cold- and hot-processed tools, and cutting tools that are used to make automobiles, electrical equipment, machinery, and many other industrial products. We possess extensive precision processing expertise that has been acquired over decades of operation, coupled with a thorough commitment to quality control. Our products are made of high-grade special steels produced at Nippon Koshuha Steel's Toyama Works, an integrated facility that covers all phases of the manufacturing process from initial design throu h finished product

Koshuha Precision, Ichikawa Plant (Ichikawa, Chiba Prefecture)

Base materialRough

processing Heat treatment Surface grinding

Die set assembly

Wire-type electrical discharge machining NC form grinding

Die sinking electrical discharge machining

Hand processing (lap finishing) Inspection Shipping

■Flow Chart for the Manufacture of Dies and Tools

Excellent die set performance is assured by the use of various types of testing presses that range in size from 200 to 500 tons.

Testing press

Wire-type electrical discharge machine The machine performs ultra-precise machining operations usin an e tremely fine, micron wire

Machining center (jig borer)his machine processes hard materials to meet specifications that re uire

high speed and rigidity.

Our i rinders can finish standard holes within a tolerance of three microns for both hole dimension and position.

Jig grinder

or obects that are difficult to grind, we create a high-precision electrode and process the objects using electrical discharge.

Die-sinking electrical discharge machine

Testing press

■Main Facilities

Division　

Machining

Electric dischangemachining

Inspection Facilities

Design,etc

Facility

CNC lathe, general-use latheMachining center (jig borer)NC milling cutter, general-use milling cutterNC grinderJig grinderGeneral-use grinderWire-type electrical discharge 　machineDie-sinking electrical dischange machinePolishing machine

3D coordinate measuring instrumentRoundness deviation measuring instrumentContour measuring instrumentLaser measuring instrumentTool microscopeTesting press

Diagram and technical data 　management systemCAD/CAM systemCAE system

NC forming grinderProducts manufactured by means of various NC forming grinders feature high quality and long service life.

Applying Expertise Based on Years of Experience, We Manufacture Dies and Tools that Meet Diverse Needs

Dies and Tools - Operations

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Shipping

Koshuha produces press molds and tools used to manufacture major car components such as automatic transmissions. These include punches and dies, molds for for ed ears, mandrels, fillet formin tools, and many others e also manufacture various types of precision metal molds that are used to make such equipment as heat e chan ers, can manufacturin e uipment and motor cores. In addition, we can accommodate various surface processing requirements to suit a wide range of applications.　Koshuha also offers die sets and utilizes a production system that incorporates trial pressin s so that the molds are perfectly ad usted before they are shipped to the customer n this way, we satisfy our customers requirements for molds that have a high degree of dimensional precision.

arious standard punches, includin type, type and bearin punches

e assemble hi h precision, finished die sets comprised of 100 to 500 parts or more.

Die set assemblyForming tools for cran shaft fillets

Engine crankshaft Differential gears

Torque converter

Other parts

Automatic transmission

Constant-velocity ball joint

Standard punches

Precision hardened plate (SKD, SKH)empered and round finished products for electrical

discharge and electrical discharge processing.

Die setsWe design and make die sets used in the manufacture of parts for automobiles, heat e chan ers, and other products

etal cal in cap fittin s for hydraulic hoses

Punches for forming startermotor clutches

Cam slide dies

unch holder for constant velocity ball oint

ie for constant velocity ball oint

Dies for differential gears

High-Quality, High-Precision Dies Make Precision Pressing Possible While Supporting Advanced Technologies.

Dies and Tools - Products

Mandrel Blanking die for clutch plates Center dies Slit punches

Automotive Parts

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We design and manufacture special tools to meet diverse customer needs, using materials ranging from high-grade steel to ultra-hard materials with varying degrees of wear resistance and toughness. Our list of products includes can-making tools, forming rolls, tools for manufacturing springs and shearing blades, among others.

These tools can process complex shapes in one pass, eliminating variation in product dimensions.

Forming tools

Our sharp blades are made of various types of steel that are optimi ed respectively for lathe turnin and at cuttin

The narrow width of these cutting tips makes more efficient use of material when drill cuttin lso, their special shapes reduce chatter marks.

High Coat paratips

These tools are used mainly for making grooves in bores and for form processing.

Recessing tools

Our quality products ensure stable performance to shear wire rods and pipes.

Wire rod shearing bladesWe manufacture wear-resistant tools and precision machine components.

Tools for forming springs

We make precision rolls that are used in such applications as processing multi-thickness wire material.

Wire-forming rollsWe supply various types of measuring jigs that improve product precision.

Measuring jigs

Cutting tool products

We design and manufacture forming tools, recessing tools and other precision tools with optimized materials and shapes to match the work diagrams, cutting conditions and attachment methods of our customers. We have a wide selection of JIS standard tools in stock, made of various materials for many different applications. Our proprietary High Coat tips are made of high-speed steel that makes them ideal for detailed processing, pipe cutting and corner arc processing.

Special tools

Cutting tool products

These tools feature forms that are attached to a cylinder, making them ideal for cutting nonferrous metals and free-cutting steel.

Circular tools

Koshuha offers a greater variety of shapes, sizes and materials than any other tool manufacturer in Japan.

Finishing toolsBlade tools

We manufacture all kinds of can-making tools used in the manufacture of beverage cans and other can containers.

Can-making tools

Sharp Cutting Tools and Specialized Tools Featuring High Precision and Long Service Life Improve Productivity

Dies and Tools - Products

Special tool products

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Main Facilities

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To deliver the materials required by our customers in the forms they require, distribution has become an increasingly important function. KAMS is equipped with an integrated system that includes everything from machining to heat treatment of Nippon Koshuha Steel’s micro-fine steels. With our ample stocks and latest processing facilities, we perform all types of shape processing to meet diverse customer needs. Furthermore, our network of bases across Japan ensures timely service.

KAMS Headquarters and North Kanto Techno Center

North KantoTechno Center

South Kanto Techno Center

Chubu Techno Center

Osaka Sales Office

Hokuriku Techno Center

Hiroshima Branch Office

Nishinomiya Warehouse

Nagano Sales Office

Tohoku BranchOffice

Yokohama Sales Office

Saitama Sales Office

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Location Machining

vertical milling machine, duplex milling machine, NC milling machine, flat-surface grinder, vertical machining center, horizontal machining center, multitasking machine, ultra-hard-blade bandsaw, bandsaw

vacuum quenching furnace, vacuum tempering furnace, vacuum nitriding furnace, sub-zero facility

vacuum quenching furnace, atmosphere quenching furnace, tempering furnace, sub-zero facility

vacuum quenching furnace, quenching oil tank, atmosphere tempering furnace, vacuum tempering furnace, atmosphere tempering furnace, cleaning tank

vertical machining center, bandsaw

bandsaw

vertical milling machine, NC milling machine, duplex milling machine, vertical machining center, NC lathe, bandsaw

vertical milling machine, horizontal milling machine, flat-surface grinder, rotary grinder, bandsaw

vacuum quenching furnace, vacuum tempering furnace

Heat Treatment Surface Treatment

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YokohamaSalesOffice

SouthKantoTechno Center

ChubuTechnoCenter

OsakaSalesOffice

HokurikuTechnoCenter

NaganoSalesOffice

NorthKantoTechnoCenter

MachiningWe have a full line-up of equipment for various types of processing.

Cutting

With expertise acquired through research and development, we control dimensional changes during heat treatment to ensure high product quality.

Heat Treatment

MACHAON Coat, a surface treatment technology developed by the Nippon Koshuha Steel Group, provides solutions for a wide range of issues faced when using molds.

Surface Treatment

NC milling machine Multitasking machine

Vertical machining center Horizontal machining center

Vacuum quenching furnace

A 1300 mm bandsaw is used to meet requests for large size products.

Steel Material Sales, Machining, Heat Treatment, Surface Treatment ‒ Operations

With Ample Steel Material Stocks and State-of-the-Art Facilities, We Offer Fully Integrated Services Ranging from Machining to Heat Treatment and Surface Treatment

Steel Material Sales, Machining, Heat Treatment, Surface Treatment ‒ Operations

PVD equipment for hard film coating, radical nitriding equipment, vacuum degasser

Manufacturers are faced with a pressing need to reduce their impact on the environment. We established an Environmental Management Committee at Nippon Koshusha in 1993 to boost our environmental protection efforts. We work to better harmonize our production activities with the environment by using energy more efficiently in our manufacturin processes and turning waste products into re-usable resources.

Environmental Conservation

Because we believe that meeting our social responsibilities is an important requirement of corporate management, we expect all of our employees to strictly follow company rules and policies. We strive to maintain good relations with local communities by keeping the areas around our plants clean and neat, participating in local volunteer activities, and otherwise contributing to local communities in our role as a good corporate citizen.

Community Relations

Corporate Social Responsibility

1. Initiatives to combat global warming2. Reducing our environmental impact

and promoting recycling 3. Strictly observing all regulations and pro-　 moting the use of eco-friendly equipment4. Pursuing education, training and other

activities that benefit society

事業所での緑化推進

Local volunteer activities include clearing weeds from school grounds adjacent to one of our plants, and cleaning and tidying the area around local stations.

Money raised at one festival was used to buy grass cutters that were donated to local schools.

Local residents are invited to festivals held on plant grounds.

Environmental Management Policy

Helping to Preserve the Global Environment and Create an Affluent Society

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