A. High speed steel
B. Carbide
C. Cast alloy
D. Plain carbon steel
Related Mcqs:
- Compressed dry air is used as the cutting fluid, while machining____________________?
A. Steel
B. Cast iron
C. Aluminium
D. None of these - Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders - Which of the following is the most wear resistant grade of carbide used for the cutting tools ?
A. Aluminium carbide
B. Tungsten carbide
C. Nickel carbide
D. Iron carbide - Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?
A. 90% tungsten carbide and 10% cobalt
B. 70% aluminium oxide & 30% silica
C. 30% nickel, 15% chromium & 55% tungsten
D. 65% tungsten & 35% zirconium - Non-ferrous alloys used for making cutting tools need not have high__________________?
A. Abrasion resistance
B. Toughness
C. Red hardness
D. Cutting speed - The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?
A. Creep
B. Endurance
C. Fatigue
D. None of these - Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?
A. Cobalt, chromium & tungsten
B. Cobalt, chromium & nickel
C. Molybdenum, tungsten & chromium
D. Cobalt, zirconium & molybdenum - Machinability of hard alloys and tool steels is improved by_____________________?
A. Spheroidising
B. Annealing
C. Tempering
D. Normalising - ____________________ of hard alloy and tool steel is done to make it easily machinable ?
A. Case carburising
B. Tempering
C. Normalising
D. Annealing - The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
A. Red
B. Extended
C. Super
D. Extreme
