It is found that if the roll passes and the the rolling processes are reasonably chosen and the roll forging dies are designed properly, the stud can be formed on a suitable roll forging mill. When the roll forging draught is 26.9% and the tempering temperature is in the range from 550℃ to 600℃, while the plasticity and tenacity of the deformed and the undeformed parts of the stud are almost identical, the strength and hardness of the former are higher. It is seen that the stud can recommendably be produced...
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