Write briefly about the different stages of powder metallurgy
Answers
Answer:
here is ur answer.....
Explanation:
THE DIFFERENT STAGES OF POWDER METALLURGY ARE :-
(1) Generation of powder .
(2) Blending or mixing.
(3) Compacting.
(4) Sintering .
(5) Sizing or impregnation.
(6) Testing and Inspection.
GENERATION OF POWDER :- Some of the methods to generate the powders are : chemical process , mechanical process , physical process.
BLENDING OR MIXING :- Powders are to be blended or mixed properly for obtaining the required properties after suffering . In this process the powder and blender are mixed together very finely . Many types of blenders are being used to for manufacturing of various parts of by powder metallurgy technique.
COMPACTING :- Compacting is done for the shaping of the powder in to the required shape . In this, the mixed mixture is subjected to pressure and due to the application of pressure the gap between the molecules get reduced and the powder become compact and gain sufficient strength to withstand ejection and handling .
SINTERING :- This process is carried out for increasing the strength and also for the hardness of that part. In this that part is subjected to heating without any pressure for certain period of time under highly controlled conditions.
SIZING OR IMPREGNATION :- After sintering , the product part is checked by using a master die and pressure is applied over the part . This process is called sizing. Because of this process , the interconnected porosity of the parts get closed and it will be not possible to fill the pores with oil or any other metal .So , sizing is not frequently adopted. A pre-matching operation is adopted before impregnation.
TESTING AND INSPECTION :- A component is to be checked clearly about its properties and other things before it is employed for the work . Some of the tests are :- Porosity , density ,compresive strength, hardness , composition , microstructure , etc .
Inspection is done on the size shape tolerances and the total no. of defects .
HOPE U LIKE IT.....
PLZ MARK ME AS A BRAIN LIST...
Answer:
Different stages involved in metallurgy are:
1. The concentration of ores.
2. Extraction of metal from its concentrated ore.
3. Refining of metals.
Explanation:
mark as brainliest