A. Spheroidising
B. Tempering
C. Normalising
D. Annealing
Related Mcqs:
- Pick out the wrong statement about the machinability of metals. Machinability of a metal ?
A. Decreases with increase in strain hardening tendencies
B. Decreases with increase in hardness, in general
C. Depend on the composition, microstructure and physical & mechanical properties
D. Decreases with increases in tensile strength & decrease in grain size - Addition of _______________ to steel does not help in improving its machinability ?
A. Sulphur
B. Silicon
C. Lead
D. Phosphorous - Addition of ____________________ to steel does not help in improving its machinability?
A. Sulphur
B. Silicon
C. Lead
D. Phosphorous - Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of _______________ gms of zinc per m2 of steel strip ?
A. 5-10
B. 1000-1500
C. 120-500
D. 1500-3000 - Machinability of hard alloys and tool steels is improved by_____________________?
A. Spheroidising
B. Annealing
C. Tempering
D. Normalising - The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?
A. Full annealing
B. Bright annealing
C. Patenting
D. None of these - Cementite is in the lamellar form in the _____________________ phase of steel ?
A. Martenistic
B. Bainitic
C. Pearlitic
D. Ferritic - Addition of _____________________ to steel does not impart hardness?
A. Nickel
B. Copper
C. Chromium
D. Silicon - _____________________ of austenite decreases the hardenability in steel ?
A. Fine grains
B. Coarse grains
C. Homogeneity
D. Dissolved elements (except cobalt) - Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless
