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机械行业一般使用中碳钢及中碳合金结构钢的调质态或低温回火马氏体。为了满足广大用户的需要,为了使其标准更科学化,合理化,机械电子工业部机电研究所责成我所负责在 JB/GQ 1050-84《45钢、 40Gr钢淬火马氏体金相检验》标准的基础上,重新修订为ZBJ36 016-90《中碳钢与中碳合金
Machinery industry generally use medium-carbon steel and carbon structural steel tempering tempered or low temperature tempered martensite. In order to meet the needs of the majority of users, in order to make its standards more scientific and rationalization, Institute of Mechatronics, Ministry of Machinery and Electronic Industry instructed me to be responsible for JB / GQ 1050-84 “45 steel, 40Gr steel quenched martensitic metallographic examination” standard Based on the revised ZBJ36 016-90 "medium carbon steel and medium carbon alloy