Powder Metallurgy and 3 D Printing Technology
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Transcript of Powder Metallurgy and 3 D Printing Technology
Presentation on “POWDER METALLURGY with SPECIAL
REFERENCE to 3D PRINTING INNOVATIONS”
PREPARED BY:-RAHUL DUBEY
IET PATW COMPETITION 19 APRIL 2014
CONTENTS What is POWDER METALLURGY? POWDER METALLURGY PROCESS 3D Printing 3D Printing technologies Future challenges in 3D Printing Industry APPLICATIONS of PM Conclusion
IET PATW COMPETITION 19 APRIL 2014
POWDER METALLURGY (PM) is an art and science of producing fine metal powders and then making objects from individual, mixed or alloyed metal powders with or without the inclusion of non-metallic constituents.
It involves forming metal parts by heating compacted metal powders, either concurrently or subsequently, for a period of time at a temperature below the melting point of the major constituent.
WHAT IS POWDER METALLURGY?
IET PATW COMPETITION 19 APRIL 2014
WHAT DO WE LEARN?
IET PATW COMPETITION 19 APRIL 2014
POWDER PRODUCTION TECHNIQUES
Atomization
Milling
IET PATW COMPETITION 19 APRIL 2014
IET PATW COMPETITION 19 APRIL 2014
ATOMISATION
TUNDISH
PUMP
METAL DROPLETS
POWDER
NOZZLE
WATERJETS
CHAMBER
MOLTEN METAL
1. ATOMISATION
2. MILLING
Also known as grinding.
Carried out by equipments such as ball mill, impact mill, eddy mill, disk mill, vortex mill, etc.
IET PATW COMPETITION 19 APRIL 2014
Essential for uniformity of the finished product.
Over-mixing may decrease particle size and work harden the particles.
BLENDING AND MIXING OF POWDERS
IET PATW COMPETITION 19 APRIL 2014
COMPACTING
• Pressing the powders into their semi-finished form preparatory to sintering.Meaning
• To consolidate the powder as closely as possible to final dimensions.
• To provide the desired shape.Purpose
• The desired level and type of porosity.• Adequate strength for handling. Imparts
IET PATW COMPETITION 19 APRIL 2014
SINTERING
SINTERED PRODUCT
IET PATW COMPETITION 19 APRIL 2014
REVOLUTION IN THE FIELD OF POWDER METALLURGY: 3D
PRINTING
IET PATW COMPETITION 19 APRIL 2014
TURBINE BLADEJET ENGINE PART
MICROTURBINES
IET PATW COMPETITION 19 APRIL 2014
MEDICAL SCIENCES
DENTAL BRIDGE HIP IMPLANTS CRANIAL IMPLANT
AEROSPACE
AUTOMOTIVE, INDUSTRIAL AND TOOLING
HEAT SHIELDLIGHTWEIGHT FASTNERS
BOAT PROPELLER
Also known as ADDITIVE MANUFACTURING.
Objects are made from 3D model data by joining materials layer upon layer.
It is the fabrication of objects through the deposition of a material using a print head, nozzle or another printer technology.
3D PRINTING: INNOVATION IN PRODUCTION TECHNOLOGY
IET PATW COMPETITION 19 APRIL 2014
3D PRINTING TECHNOLOGIES
1.POWDER BED TECHNOLOGIES
SELECTIVE LASER MELTING(SLM)
PRECISION INKJET PRINTING
2.BLOWN POWDER TECHNOLOGY
SELECTIVE LASER MELTING
1.Complex shapes and internal
cavities.2. Thin walls and lattice structures.3. Better surface
finish.
BLOWN POWDER TECHNOLOGY 1. For cladding and
freeform. 2. Large part size
possible.3. High powder deposition rates
possible
INKJET PRINTING 1.High tolerances,
good surface finish and high
resolution.2. Suitable for thin walls and
channels.3. High
productivity
POWDER LAYER APPLICATION
MELTING OF POWDER
LOWERING THE PLATFORM
LASER
POWDER FEED
LAYER
METAL POOL
POWDER DELIVERY SYSTEM
PRINTER
POWDER BED
PISTONPRINT BOX
INKJET
3D PRINTING 3D PRINTING PEN: A RECENT DEVELOPMENT
IET PATW COMPETITION 19 APRIL 2014
Past:- plastics Present:- metals and ceramics Future:- goods delivered over the internet, meals materialize at a click and what else…….
Shift from R & D to mass production. Cost reduction. Realize household level production. Multiple material printing using same machine. A solution for increasing environmental concerns.
Looking ahead to future of PM: challenges in 3D Printing Industry
IET PATW COMPETITION 19 APRIL 2014
APPLICATIONS OF PM• 3D Printing applications• Porous products, e.g.,
bearings and filters.• Refractory products, e.g.,
parts used in electric bulbs, radio valves, oscillator valves, etc.
• Automotive components like crankshaft drive, piston rings, etc.
• Used in clocks and timing devices, typewriters, calculators, permanent magnets, etc.
• Military and defence systems• Atomic energy applications.• Complex shapes requiring
excessive machining by other processes, e.g., gears.
• Products made from materials very difficult to machine, e.g., tungsten carbide, etc.
IET PATW COMPETITION 19 APRIL 2014
IN CONCLUSION 3D Printing is an expanding technology in which
everyone has the possibility of being a manufacturer.
The potential of powder metallurgy and 3D printing is only limited by one’s imagination.
Large areas of research are still open for the future development of PM and 3D Printing.
Research in PM should be encouraged with a goal of realizing a sustainable society.
IET PATW COMPETITION 19 APRIL 2014
YOUR QUERIES PLEASE….
THANK YOU