Related Questions

To improve the machinability of steel by its softening, it is subjected to
A Cold working
B Annealing
C Shot blasting
D Heating
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
Addition of __________ to steel does not help in improving its machinability.
A Sulphur
B Silicon
C Lead
D Phosphorous
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 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
The machinability of aluminium increases when _________ is added to aluminium.
A Copper
B Magnesium
C Silicon
D Lead and bismuth
The correct sequence for descending order of machinability is
A Grey cast iron, low carbon steel, wrought iron
B Low carbon steel, grey cast iron, wrought iron
C Wrought iron, low carbon steel, grey cast iron
D Wrought iron, grey cast iron, low carbon steel
An important geometrical quantity in the cutting of metals which can be used as a criterion for machinability of metals is
A Cutting speed
B Feed rate
C Shear angle
D Tool geometry

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