Consider the following actions:
1. Mechanical abrasion
2. Diffusion
3. Plastic deformation
4. Oxidation
Which of the above are the causes of tool wear?
What is the variation of cutting speed with tool life on log-log scale?
Match the List-1 with List-lI:
List-II
1. Cast alloy
2. Ceramic
3. Carbide
4. Ideal material tools
5. HSS
In idealized chip formation, built up edge will break off and remove some of the cutting tool materials, thereby reducing tool life. Which of the following steps prevent built up edge?
1. Increasing cutting speed
2. Increasing feed rate
3. Increasing ambient work-piece temperature
4. Decreasing rake angle
5. Reducing friction
Select the correct answer using the code given below:
Why does crater wear start at some distance from the tool tip?
Surface obtained for circular generatix and straight line directrix would be
Which of the following indicate better machinability?
1. Smaller shear angle
2. Higher cutting forces
3. Longer tool life
4. Better surface finish
Dynamometer is a device used for the measurement of
The primary tool force used in calculating the total power consumption in machining is the
_________is a process where small pieces from the tool rake face material are adhered to the flowing chip and thus removed from the surface.