What is powder metallurgy?
A
Melting metal and pouring it into molds
B
Forming components from powdered metal
C
Welding metal powders together
D
Casting metals in powdered form
Analysis & Theory
Powder metallurgy is the process of making components from metal powders by compacting and sintering.
Which is the first step in the powder metallurgy process?
Analysis & Theory
Powder production is the initial step in powder metallurgy.
What is 'sintering' in powder metallurgy?
A
Cooling the compacted metal
B
Heating the compacted powder below melting point
C
Melting powder to create solid shapes
D
Pressing the powder into molds
Analysis & Theory
Sintering involves heating the compacted metal below its melting point to bond particles together.
Which of the following is a method for producing metal powders?
Analysis & Theory
Gas atomization is a commonly used method for producing fine metal powders.
What is the purpose of compacting in powder metallurgy?
B
Form a porous structure
C
Shape the powder into a desired form
D
Enhance corrosion resistance
Analysis & Theory
Compaction shapes the powder into the desired geometry before sintering.
Which advantage is associated with powder metallurgy?
C
Complex shapes with minimal waste
D
High melting point required
Analysis & Theory
Powder metallurgy allows complex shapes with minimal material waste.
Which of the following is a limitation of powder metallurgy?
D
High cost of metal powders
Analysis & Theory
Metal powders can be expensive, which is a limitation of the process.
Which material is commonly processed using powder metallurgy?
Analysis & Theory
Tungsten is often processed via powder metallurgy due to its high melting point.
What property is improved by sintering?
Analysis & Theory
Sintering enhances the strength and bonding of powder particles.
Which of the following is a typical application of powder metallurgy?
Analysis & Theory
Powder metallurgy is widely used to manufacture gears and other precision components.