Hard material coatingsCoating Technology

PVD - coatingsPACVD - coatings

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Distributor spindle (TT®- DLC)

PVD (Physical Vapour Deposition) is the physical deposition of thin layers through the vapour phase. This process creates coatings with a high proportion of covalent bonds of the layer atoms.

PACVD

(Plasma Assisted Chemical Vapour Deposition) method is a further development of the CVD technique and com-bines the benefits of the PVD and the CVD methods. In the PACVD process, a physical vapour deposition takes place by a chemi-cal reaction through the gas phase at temperatures below 180°C with specific plasma assistance.

PVD coating of high-precision tools and high-quality components in-creases properties such as hardness and thermal and chemical stability. At the same time, properties such as friction coeffi cient, cold welding tendency, bonding and adhesive tendency, corrosion tendency and oxidation tendency are signifi cantly lowered.

Our high-tech coatings have been used in all sectors of industry since 1988.

We have satisfied customers in the

• Automotive industry

• Medical technology

• Aerospace industry

• Electrical industry

• Textile industry

• Machine-building industry

• Tool industry

successful customers are our success

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Plastics Technology

Our PVD coatings offer the following benefits in plastics technology:

• High level of wear protection of structured tools, also protection against damage to polished surfaces

• Improved ejectability• Faster filling => shorter cycle time

• Less cleaning effort through reduced plastic coats on the mould

• Increased production reliability

• Improved surface finish of the plastic parts

• Reduced warping of plastic parts

We recommend the following coatings for your various plastic applications:

• TiN (Titanium nitride) e.g. for polyamide

• Cr2N (Chromium nitride) e.g. for polysulphone

• TiCN (Titanium carbonitride) e.g. for plastic masses with > 30 % glass fibre

• TT®

-DLC (amorphous materials) e.g. slides and ejectors

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Plastic mould for IT industry (TiN)

Threaded spiral cutter (TiN)

Plastic mould for IT industry (TT®- Cr2N )

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Forming and Punching

Our PVD coatings offer the following benefits in forming and punching technology:

• Low cold welding tendency

• Considerably longer tool life

• No adhesion and cold welding

• Optimized flow behaviour

• Clean cuts, thus reducing re-works of the components

• Reduced friction co-efficiency, thus lower punching and retraction forces

We recommend the following coatings for your various forming and punching applications:

• CrN (Chromium nitride) e.g. for copper alloys and aluminium alloys

• TiN (Titanium nitride) e.g. for unalloyed steels

• TiCN (Titanium carbonitride) e.g. for medium and high-alloy steels

• Calida®

F (aluminium-chrome nitride) as an alternative to CVD coatings

4Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Stamps and dies for the automotive industry

Punches for the automotive industry

Cutting tools for the automotive industry

Machining

For the use in chip removal our range of appli-cations of PVD coatings show the following advantages:

• Considerably longer tool life

• No material accumulation on the cutting surface

• Temperature dissipation into the chips

• Higher cutting parameters

• Dry machining possible

• HSC machining possible

We recommend the following coatings for your cutting tools:

• UniPlus®

DC (TiAlN) e.g. for dry work and high-speed machining operations

• Calida®

PD (AlTiN) e.g. for drilling

• Calida®

T (AlTiN) e.g. for heavy duty chip removal

• UniCut® (TiAlCN)

e.g. for machining of titanium alloys

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End milling cutters (UniPlus®

DC)

Drills (Calida®

PD f)

Cylindrical milling cutters (Calida®

T)

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Tribological Coatings for Tooling

We offer the much preferred application of TT ®-WCC® and TT ®- DLC coatings for tool making, mould and die production and aluminium chip removal.

TT ®-WCC® is a wolfram-doped, amorphous, diamond-like carbon coating and shows itself to be quite dif-ferent, particularly resulting in lower amounts of friction, and a good elastic behaviour throughout. As a result of the lower coating temperature (<180°C), also components with a low annealing temperature can be coated without the base material being af-fected. TT®-DLC is a metal-free diamond-like carbon coating, with lower temperatures through the isolated PACVD- process. TT ®- DLC is an ideal surface finishing for tribological heavy-duty components and tools due to the combination of high wear resistance and out-standing friction and non-stick properties.

Coating system

Colour Manufactur-ing process

Micro hardness(HV 0.05)

Coefficient of friction

on steel* to-wards 100Cr6

TT®

- WCC® black-

greymagnetron sputtering 1,500 0.20

TT®

- DLC black-grey PACVD

2,000 -3,500

< 0.15

MoS- glide® black-

greymagnetron sputtering 300 < 0.05

* Measured with pin-on-disc tribometer (DIN 50324)

Test parameter: non-lubricated, T= 23 ± 1°C, r.F = 50 ± 5 % (steel against steel: μ = 0.6-0.9)

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Distributor

Ejection element

Milling cutters for AL machning (TT®

- D LC )

2μm

REM image of TT®

- DLC®

-coating

substratetransition layer

intermediate layer

surface layer a-C:H

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

Service Performances

We guarantee your success - not only through our daily achievements in hardening and surface technology, but also through our wide range of services:

• Pick-up service through our own fleet

• State-of-the-art laboratory equipment

• Material analysis

• Structural analysis

• Hardness testing acc. to Rockwell, Vickers and Brinell

• Coating analysis

• Coating thickness measurement through calotte grinding and X-ray fluorescence

• Coating adhesion acc. to VDI guideline 3198

• Micro hardness measurement

• Roughness measurement

Appropriate are hardened tool steels or steels that have been plasma-nitrided by with annealing temperatures above 500 °C, as well ashard metals.Please ensure that the tools have been given pre-liminary heat treatment suitable for coating in or-der to prevent changes in structure, in hardness and in dimensions. Coating processes below 200 °C are available on request.

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PVD/PACVD equipment

Our pick-up service

Chipping test for the quality control of our layers

Hardening technology - Nitriding technology - Coating technology with HIGH-TECH KNOW-HOW in application system

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UniCut ® = Trade Mark of Fraisa (Switzerland)

Improx®/ UniDur® / UniNox® / UniPlus® / UniTwin® / TT® / WCC®/ Calida® = Trade Marks of H-O-T Härte- und Oberfl ächentechnik GmbH & Co. KG (Germany)

photography & design: www.fi namedia.de

H-O-T Vertriebs- und Logistik-Center GmbH & Co. KG

Kleinreuther Weg 118 Phone: +49(0)911 - 36014-42 Fax: +49(0)911 - 36014-25 hot-nuernberg@hot-online.de

Our centers in Germany

Nürnberg (4 x) 04626 Schmölln-Nitzschka 59457 Werl 73095 Albershausen 96155 Buttenheim

97766 Memmingerberg

Our center in Turkey

16250 Bursa

Hardening technology Nitriding technology Coating technology

Vacuum hardening Plasma-nitriding PVD/PACVD coating

Induction hardening Gas-nitriding High-performace coating systems

Controlled atmosphere

hardening

Oxidizing Tribological coating systems

˙ in gas UniTwin® - combination systems

˙ in plasma

Improx® -oxidizing

Service

Laboratory (analyses, sample tests)

Consulting (materials, layouts)

Pick-up Service (with own feet)

HHIIGGHH-TTECH KNOOOWW--HHOOWW iinn aappplicationn syysstteemms

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