Related Questions

To improve the machinability of steel, it is generally subjected to
A Spheroidising
B Tempering
C Normalising
D Annealing
Addition of __________ to steel does not help in improving its machinability.
A Sulphur
B Silicon
C Lead
D Phosphorous
The machinability of steel is improved by adding
A Nickel
B Chromium
C Nickel and chromium
D Sulphur, lead and phosphorus
The machinability of steel is increased by
A Silicon and sulphur
B Phosphorous, lead and sulphur
C Sulphur, graphite and aluminium
D Phosphorous and aluminium
Softening of hardned steel is done by its
A Normalising
B Tempering
C Annealing
D Carburising
The specific cutting energy used for establishing the machinability of the metal depends upon its
A coefficient of friction
B micro-structure
C work hardening characteristics
D all of the mentioned
The heat treatment process used for softening hardened steel is
A Carburising
B Normalizing
C Annealing
D Tempering
The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
A Red
B Extended
C Super
D Extreme
The factor considered for evaluation of machinability is
A Cutting forces and power consumption
B Tool life
C Type of chips and shear angle
D All of these
The process which improves the machinability of steels, but lowers the hardness and tensile strength is
A Normalising
B Full annealing
C Process annealing
D Spheroidising

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