Methods of Compacting / Powder Metallurgy
Methods of compacting are:
1. Pressing
2. Centrifugal Casting
3. Slip Casting
4. Extruding
5. Gravity Casting
6. Rolling
7. Iso-static Moulding
8. Explosive Compacting
9. Fibre Metal processes
Methods of compacting are:
1. Pressing
2. Centrifugal Casting
3. Slip Casting
4. Extruding
5. Gravity Casting
6. Rolling
7. Iso-static Moulding
8. Explosive Compacting
9. Fibre Metal processes
Finishing Operations In Manufacturing
Sizing:
Repressing the sintered component in a die to meet required tolerances.
Coining:
Repressing the sintered component in a die to increase the density and to give additional strength.
What is sintering in powder metallurgy process?
The operation of heating the green compact at high temperature in a controlled atmosphere (Reducing atmosphere which protects oxidation of metal powders). The Sintering increases the bond between the particles and therefore strengthens a powder metal compact. Sintering temperature and time of sintering depends on the type of powders and the strength required in a final product. The Sintering temperatures usually 0.6 to 0.8 times the melting point of powders.
The Process of producing components from metallic powder parts made by powder metallurgy may contain non-metallic constituents to improve the bonding qualities and properties.