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我厂在材料的入库验收过程中,经常出现LY12MJ板材淬火后的性能不合格.这种不合格主要表现在抗拉强度(σb)低于标准极限值和同一张板材上性能不均匀.我们通过系统分析试验查明了材料的不合格原因,并制定了使抗拉强度达到标准要求的热处理工艺方法.本文综述我们试验的结果.一、试验的基本条件试验用材选用入库复验不合格的9079批LY12MJ板材,规格为δ=0.5毫米.试验是在生产条件下进行的.试样热处理在硝石槽中进
I plant in the storage of materials acceptance process, often appear LY12MJ plate after quenching the unqualified performance.This failure mainly in the tensile strength (σb) below the standard limit and the same plate on the performance of non-uniform .We Through the systematic analysis of tests to identify the reasons for the material failure, and to develop a tensile strength to meet the standard requirements of the heat treatment process.This article summarizes the results of our test.First, the basic conditions of the test materials used in the warehouse retest unqualified Of the 9079 batch LY12MJ plate size δ = 0.5 mm test is carried out under production conditions Sample heat treatment in the saltpetre tank into