The document discusses powder metallurgy, which is a process where fine metal powders are mixed, pressed into a desired shape, and then heated to bond the particles together. It describes the key steps of powder production, blending, compaction, sintering, and finishing. Common powder metallurgy techniques include chemical reduction, electrolytic deposition, solid-state reduction, and atomization. Atomization uses high pressure fluid jets to break molten metal into fine particles. Final products have complex shapes and combined properties of multiple materials. Advantages are good finishes, high production rates, and ability to make complex shapes, while disadvantages include weaker strength and higher costs.

1. Presented by
Aayush

2.  Introduction to Powder Metallurgy
 Procedure of P/M
 Powder Metal Products

3.  Powder metallurgy is a process by which
fine powdered materials are mixed,
pressed into a desired shape, and then
heated to bond surfaces.
 Used for parts in the automotive industry,
household appliances.

4.  Powder production
 Blending or mixing
 compaction
 Sintering
 finishing operations
P/M Process
METAL
POWDERS
ADDITIVES
(DIE LUBRICANT)
AND GRAPHITE
MIXING
COMPACTION
SINTERING
SECONDARY
OPERATIONS
FINIISHED
PRODUCTS

5.  Chemical reduction.
 Electrolytic deposition.
 Solid-State reduction.
 Atomization.

6. Atomization
 Atomization process involves
use of high pressure fluid jets to
break up a molten metal stream
into very fine droplets, which
when solidify into fine particles .
High quality powders of Al, brass,
iron, tool steel and super alloys
are produced by the above method.

8.  High pressure is applied to
squeeze the powder into
the desired shape

9.  Heats the powder below the melting point
to allow solid-state diffusion and bond the
particles together

10. 1. Products of complex shapes
2. Products made of materials that are difficult to
machine or have high melting points
3. Products which require the combined
properties of multiple materials
4. Products in which powder metallurgy produces
superior properties

11.  Good surface finishing
 High production rates
 Complex shapes can be produced

12.  Inferior strength properties
 Relatively high die cost
 High material cost

13. Gears
Cranks
Bearings
Roller bearing cages
Light bulb filaments
Cutting tool