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我厂经过反复实践,初步掌握了Cr12的锻造工艺,不论是机械性能、热处理性能、工艺性能,而且在模具使用时的剪切性能都较良好。一、锻前准备 1.钢材下料前必须进行化学成分化验,符合标准者,方可使用。 2.备料的锻造比必须在2～2.5内。如φ50毫米的料,下料长度则为100～125毫米。二、加热 1.加热范围及锻造次数:锻件在30公斤以下者,锻三～四火次;30～60公斤者,锻四～五火次;60公斤以上者,不少于七火次。
After repeated practice of our factory, preliminary mastered the Cr12 forging process, whether mechanical properties, heat treatment performance, process performance, but also in the mold when the shear performance is better. First, forging preparation 1 steel cutting must be chemical composition test, in line with the standards, before use. 2 preparation forging ratio must be within 2 ~ 2.5. Such as φ 50 mm of material, cutting length of 100 to 125 mm. Second, heating 1. Heating range and number of forging: forging below 30 kg, forging three to four fire times; 30 to 60 kilograms, forging four to five fire times; 60 kg or more, not less than seven fire times.