A grinding wheel becomes glazed (i.e. cutting edge takes a glasslike appearance) due to
Wear of bond
Breaking of abrasive grains
Wear of abrasive grains
Cracks on grinding wheel
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- Allowance in limits and fits refers to
- The operation performed on a shaper is
- The tap used to cut threads in a blind hole is
- For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
- In centreless grinding, work place centre will be
- The average cutting speed for turning mild steel with a high speed steel tool is
- Crater wear occurs mainly on the
- Hot rolling of mild steel is carried out
- Stellite preserves hardness upto a temperature of
- Match the items of List-I (Equipment) with the items of List-II (Process) and select the correct answer…
- The cutting angle of a flat drill varies from
- The tail stock set over method of taper turning is preferred for
- The material property which depends only on the basic crystal structure is
- The tailstock set over required to turn a taper on the entire length of a workpiece having diameters…
- A lathe with four steps on the cone pulley and with back-gears will have
- Trepanning is performed for
- The correct sequence of tool materials in increasing order of their ability to retain their hot hardness…
- With the same tool life, the maximum material per minute is removed by
- Which of the following statement is correct about nose radius?
- The vector sum of cutting velocity and chip velocity is __________ shear velocity.
- When the shear angle is small
- A single point tool has
- In drilling aluminium, a drill with
- In hot machining, tool is made of
- The usual value of the helix angle of a drill is
- Gear burnishing is a process for
- Trepanning is an operation of
- In transverse grinding
- The angle formed by the leading edge of the land with a plane having the axis of the drill, is called
- The type of tool used on milling machine and broaching machine is