Distortion
Warping
Porous weld
Poor fusion
B. Warping
Side relief angle
End relief angle
Back rake angle
Side rake angle
Wheel is too hard or wheel revolves at a very high speed
Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard and wheel revolves at very slow speed
Wheel is too soft and wheel revolves at a very high speed
Forehand welding
Flux cored ARC welding
Electro slag welding
Pulsed spray welding
15 to 19 m/min
25 to 31 m/min
60 to 90 m/min
90 to 120 m/min
Arithmetical progression
Geometrical progression
Harmonical progression
Any one of these
Between two successive regrinds of the wheel
Taken for the wheel to be balanced
Taken between two successive wheel dressings
Taken for a wear of 1 mm on its diameter
To produce good surface finish and high degree of accuracy
To remove considerable amount of metal without regard to accuracy of the finished surface
To grind exterior cylindrical surfaces
Any one of the above
Grinding
Lapping
Honing
Buffing
10 to 20 m/min
18 to 30 m/min
24 to 45 m/min
60 to 90 m/min
The chip thickness increase gradually
It enables the cutter to dig in and start the cut
The specific power consumption is reduced
Better surface finish can be obtained
Using a harder wheel or by increasing the wheel speed
Using a softer wheel or by decreasing the wheel speed
Using a harder wheel or by decreasing the wheel speed
Using a softer wheel or by increasing the wheel speed
Melting and Evaporation
Melting and Corrosion
Erosion and Cavitations
Cavitations and Evaporation
Help in the movement of the sparks
Control the spark discharges
Act as coolant
All of these
Increases tool life
Decreases tool life
Produces chipping and decreases tool life
Results in excessive stress concentration and greater heat generation
True feed
Chip thickness
Rake angle of the cutting tool
All of these
Mismatch
Under fill
Crack
Porosity
Cemented carbide
Ceramic
Cast iron
All of these
Same
Low
High
None of these
Conventional milling
Climb milling
End milling
Face milling
Bevelling the extreme end of a workpiece
Embossing a diamond shaped pattern on the surface of a workpiece
Reducing the diameter of a workpiece over a very narrow surface
Machining the ends of a workpiece to produce a flat surface square with the axis
Drill a hole
Finish the drilled hole
Correct the hole
Enlarge the existing hole
10 m/min
15 m/min
22 m/min
30 m/min
Up milling
Down milling
Face milling
End milling
High speed steel
Carbon steel
Stainless steel
Either (A) or (B)
Has no effect on
Increase
Decrease
None of these
Body centred cubic
Base centred cubic
Hexagonal closed packed
Body centred tetragonal
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.
Has less number of teeth
Is short and stocky
Removes less material for each pass of the tool
All of the above
Coefficient of friction
Microstructure
Work hardening characteristics
All of these
Shear velocity
Chip velocity
Cutting velocity
Mean velocity