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钢材在化学和电化学处理过程中,常常伴随着析氢而导致其本身脆化的问题。因此,如何科学、合理地防止材料的氢脆,就成为一个重要课题。下面介绍我厂在新机试制中,能较好地防止材料氢脆的一种规范。即:凡抗拉强度≥102公斤/毫米~2(或HB302或HV310)到(并包括)142公斤/毫米~2(或HB408或HV432)的高强度钢均必须在化学或电化学处理前消除应力,处理后除氢,凡抗拉强度<102公斤/毫米~2(或HB302或HV310)的低强度钢,则既不要求消除应力,也不要求除氢。我厂在试制中所采用的消除应力和除氢规范详见下表:
Steel in the chemical and electrochemical treatment process, often accompanied by hydrogen evolution and its own embrittlement problems. Therefore, how to scientifically and reasonably prevent the hydrogen embrittlement of materials has become an important issue. The following describes our factory in the new machine trial, can better prevent a material hydrogen embrittlement specification. That is: High strength steels with a tensile strength ≥102 kg / mm2 (or HB302 or HV310) up to and including 142 kg / mm2 (or HB408 or HV432) must be eliminated prior to chemical or electrochemical treatment Stress, hydrogen treatment after treatment, any low-strength steel with a tensile strength of <102 kg / mm2 (or HB302 or HV310) requires neither stress relief nor hydrogen removal. The details of the stress relieving and hydrogen removing specifications adopted by our factory in trial production are as follows: