1. Darshan Institute Of
Engg & Tech

2. Preapared By
Name Enroll No
Thakar vivek ( )

3. CONTENTS APPLICATION OF POWEDR METALLURGY.
ADVANTAGES OF POWDER METALLURGY.
PRODUCTION OF METAL POWDER.

4. 1. APPLICATION OF POWDER METALLURGY
Porous products like bearing and filters.
Refractory parts like components made out of tungsten, tantalum and molybdenum are used in electric bulb, radio valves, oscillator valves-rays tubes in the form of filament.
X-RAYTUBE TUNGSTEN FILAMENT

5. Parts made by powder metallurgy have also been used in clocks and timing devices, typewriters, adding machine, calculators, permanent magnets, laminated bimetallic strips, etc.
CLOCK MECHANISM PERMENANT MEGNET

6. Automotive components such as electrical contacts, crank shaft drive or camshaft sprocket, piston rings and rocker shaft brackets, door mechanism, connecting rods break linings, etc.
ELCTRICAL COTACTS
PISTON RINGS

7. 2. ADVANTAGES OF POWEDR METALLURGY
The dimensional accuracy and surface finish obtainable are such that for many applications all machining can be eliminated.
Quite complex shapes can be produced. As shown in figure.
COMPLEX SHAPES

8. Impossible parts can be produced like hard cutting tool bits.
No material is wasted as scrap the process use of 100% of raw material and high production rate.
TOOL BITS

9. Powder metallurgy is free from the limitation imposed by phase diagram.
The use of diamond in industry has been made possible mainly through powder metallurgy.
FINE POWDER FORMS

10. 3. PRODUCTION OF METAL POWDER
The particles size of powders falls into a range of 1 to 100x(micron) being predominant. There are various method of manufacturing powders of this size, but those commonly used are:
Atomization
Reduction
Electrolysis
Crushing
Milling
Condensation of metal vapours

11. Atomization:
In this process, the molten metal is directed through an orifice and as it emerges, a high pressure stream of gas or liquid impinges on it causing it to atomize into fine partial.
Frequently an inert gas is employed in order to improve the purity of the powder.
Atomization is used mostly for low melting point metals because of the corrosive action of the metal on the orifice at high temperature.

12. ATOMIZATION

13. CRUSHING:
It requires equipments such as stamps, hammers , jaw crusher, gyratory crushes. various ferrous and non-ferrous alloys can be heat treated in order to obtain a sufficiently brittle material which can be easily crushed into powder form.
CRUSHING MACHINE

14. THANK YOU