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近几年来,我厂低温容器制造逐年增加,1987年,就承制了三十台低温容器,因此,需要大量低温容器制造材料。通常要求的低温有-20℃,-30℃,-40℃等,然而选用的低温材料绝大多数是16MnR,其它材料市场短缺,满足不了当前石油化工工业发展的需要,我厂低温容器制造常选用16MnR钢板逐张正火,温度为900～920℃,经机械性能试验.其它指标达不到,影响了生产。因此,提出了能不能改变热处理工艺,在保证
In recent years, the manufacture of cryogenic containers in our factory has been increasing year by year. In 1987, we manufactured 30 cryogenic containers, therefore, we needed a large quantity of cryogenic containers to make materials. Usually low temperatures are -20 ℃, -30 ℃, -40 ℃, etc. However, the vast majority of the selection of low temperature materials is 16MnR, the shortage of other materials market, can not meet the current needs of the petrochemical industry development, our factory low temperature container manufacturing Use 16MnR plate by piece normalizing, the temperature is 900 ~ 920 ℃, the mechanical properties test, other indicators fail to affect the production. Therefore, it is proposed that the heat treatment process can be changed without fail