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在实验室模拟CSP工艺的加热条件,对30Cr Mo钢进行试验,用金相法测量脱碳层厚度,用失重法对30Cr Mo钢的氧化层厚度进行估算,结合氧化烧损研究了加热温度和保温时间对30Cr Mo钢的实际脱碳层厚度的影响规律。结果表明,在试验气氛为(体积分数,%)CO216.5、O20.8、H2O13、N269.7,加热温度范围为1 000~1 150℃时,30Cr Mo钢的实际脱碳层厚度随着加热时间的增加而增加,低于1 050℃时,脱碳层厚度随着温度升高而增加,高于1 050℃时,脱碳层由于氧化加剧而减少,1 050℃为脱碳敏感温度。
In the laboratory simulation of the CSP process heating conditions, the 30Cr Mo steel was tested by the metallographic method to measure the thickness of the decarburization layer, the thickness of the oxide layer of 30Cr Mo steel by weight loss method was estimated, combined with the oxidation burning loss of the heating temperature and holding time The influence rule of the actual thickness of decarburized layer of 30Cr Mo steel. The results show that the actual thickness of decarburized layer of 30Cr Mo steel increases with the experimental conditions (volume fraction,%) of CO216.5, O20.8, H2O13, N269.7 and heating temperature range of 1000-11500 ℃ The decarburization layer thickness increases with increasing temperature below 1050 ° C, decarburization layer decreases due to the increase of oxidation above 1050 ° C, and the decarbonization sensitive temperature at 1050 ° C .