Water
Soluble oil
Dry
Sulphurised mineral oil
D. Sulphurised mineral oil
Shear angle
Chip-tool contact length
Both (A) and (B)
None of these
The diamond is the hardest tool material and can run at cutting speeds about 50 times that of high speed steel tool.
The ceramic tools can be used at cutting speeds 40 times that of high speed steel tools.
The cemented carbide tools can be used at cutting speeds 10 times that of high speed steel tools.
The ceramic tools can withstand temperature upto 600°C only.
Cutting speed
Nose radius
True rake angle
All of these
Shaping
Casting
Forming
Hobbing
5°
6°
8°
10°
Turning
Grinding
Boring
Milling
Fusion
Reverse polarity
Forward welding
Direct polarity
Hard and brittle materials
Soft and ductile materials
Hard and ductile materials
Soft and brittle materials
Cast iron
Mild steel
Brass
Aluminium
Shank, material and diameter
Shank, lip angle and size of flute
Material, length of body and helix angle
Any one of these
Fatigue strength
Work hardening
Fracture strength
Elastic constant
Friction zone
Work-tool contact zone
Shear zone
None of these
Shaping carbide dies and punches having complicated profiles
Making large number of small holes in sieves and fuel nozzles
Embossing and engraving on harder materials
All of these
50°C
100°C
175°C
275°C
Increase in cutting temperature
Weakening of tool
Friction and cutting forces
All of these
Plastics
Copper
Cast steel
Carbon steel
Metal forming process | Types of stress |
---|---|
1. Coining | P. Tensile |
2. Wire Drawing | Q. Shear |
3. Blanking | R. Tensile and compressive |
4. Deep Drawing | S. Compressive |
1-S, 2-P, 3-Q, 4-R
1-S, 2-P, 3-R, 4-Q
1-P, 2-Q, 3-S, 4-R
1-P, 2-R, 3-Q, 4-S
Length between centres
Swing diameter over the bed
Swing diameter over the carriage
All of these
Brinell hardness number
Rockwell hardness number
Vickers pyramid number
Letter of alphabet
Ultrasonic welding
Forge welding
Electron beam welding
Friction welding
350°C
500°C
900°C
1100°C
Incomplete fusion
Lamellar tearing
Mismatch
Shrinkage void
It cannot be used on old machines due to backlash between the feed screw of the table and the nut.
The chips are disposed off easily and do not interfere with the cutting.
The surface milled appears to be slightly wavy.
The coolant can be poured directly at the cutting zone where the cutting force is maximum.
Incomplete penetration
Shrinkage void
Slag Entrapment (Inclusions)
Incomplete fusion
Distortion
Warping
Porous weld
Poor fusion
Soldering
Brazing
Welding
Clamping
Number of pieces machined between tool sharpenings
Time the tool is in contact with the job
Volume of material removed between tool sharpenings
All of the above
Leading edge of the land with a plane having the axis of the drill
Flank and a plane at right angles to the drill axis
Chisel edge and the lip as viewed from the end of a drill
None of the above
Mild steel
Alloy steel
Pig iron
Chilled cast iron
In-feed grinding
Through feed grinding
End feed grinding
Any one of these