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Q. |
If an article develops insufficient hardening after quenching, the defect can be corrected by |
A. | removing scale from surface |
B. | normalising or annealing followed by hardening |
C. | reheating the article in oxidizing atmosphere and quenching |
D. | Any of the above |
E. | Low specific heat of quenching oil |
Answer» B. normalising or annealing followed by hardening |
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