论文部分内容阅读
本文研究了热处理规范对Cr12MoV 钢组织和机械性能影响,分析了由该钢制作的冷镦凹模的失效形式。认为,由于小能量多次冲击和断裂韧性试验比较接近于这类模具工作时的实际受力状态,用之作为模具寿命的判据较为合理,并据此择优选出能使横具的强度和韧性得到最佳配合的热处理工艺,即1030～1050℃加热淬火,400℃回火,使模具使用寿命比原工艺提高两倍以上,打破了Cr12MoV 钢必须在低淬低回或高淬高回状态下使用的传统观念。
In this paper, the effect of heat treatment standard on the microstructure and mechanical properties of Cr12MoV steel was studied, and the failure modes of cold heading die made of this steel were analyzed. It is considered that due to the small energy multiple impact and fracture toughness test is relatively close to the actual working condition of this kind of mold work, it is more reasonable to use it as the criterion of mold life, Toughness to be the best with the heat treatment process, that 1030 ~ 1050 ℃ heating quenching, tempering at 400 ℃, the mold life of more than double the original process, breaking the Cr12MoV steel must be low quenching low back or high quenching and high recovery state Under the traditional concept of use.