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WorksheetsForging, Press working, Powder Metallurgy ,heat treatmentQuiz
Total questions: 20
Worksheet time: 30mins
In which operation is a portion of sheet cut and bent without removal?
Blanking
Piercing
Lancing
Slitting
Curling is a type of:
Bending operation
Piercing operation
Cutting operation
Drawing operation
Pilot is used in dies for:
Removing workpiece
Locating pre-pierced holes accurately
Removing burrs
Stopping sheet length
The part of the press tool fitted on the ram is:
Die
Punch
Bolster
Stop
Roll forging produces:
Varying cross-section
Constant cross-section
Thin sheets
Hollow tubes
Drop forging uses:
Open dies
Closed dies
Flat dies
None of these
The process of forming metal by compressive force is called:
Casting
Welding
Forging
Extrusion
In drawing, the heated metal:
Length increases, cross-section decreases
Length decreases, cross-section increases
Both length and cross-section increase
Remains unchanged
The drive that converts rotary motion into reciprocating motion in a mechanical press is:
Crank and connecting rod
Gear drive
Belt drive
Chain drive
A progressive die performs:
One operation at a time
Two or more operations in sequence in each stroke
All operations simultaneously
Only bending
What is the primary purpose of the sintering step in powder metallurgy?
To compress the powder into a green compact
To heat the compact to bond the particles metallurgically
To infiltrate the pores with a lower melting point metal
To achieve the final dimensional accuracy
The 'green compact' in powder metallurgy refers to the part:
After it has been sintered
After it has been infiltrated with another metal
After it has been compressed but before sintering
That is made from ceramic powders
The reduction method for powder production is primarily used for:
High melting point metals like tungsten and molybdenum
Very hard metals like titanium
Low melting point metals like lead
Copper
A part made by powder metallurgy is likely to have good:
Ductility
Damping capacity
Hardness
Weldability
The reduction process for making iron powder typically uses which gas to reduce iron oxide?
Oxygen
Nitrogen
Hydrogen
Carbon dioxide
What is the primary purpose of heat treatment?
To increase the size of the material
To alter the physical and mechanical properties of a material
To reduce the weight of the material
To change the color of the material
Annealing is primarily used to:
Increase hardness
Relieve internal stresses
Reduce ductility
Increase brittleness
Hardening involves:
Heating and slow cooling
Heating and rapid cooling
Cooling without heating
Heating only
In the iron-carbon equilibrium diagram, what is the eutectoid point?
0.8% carbon at 723°C
2.0% carbon at 1000°C
0.2% carbon at 500°C
1.5% carbon at 900°C
Normalizing is different from annealing because it involves:
Slower cooling
Faster cooling in air
No cooling
Heating only
