1Cr11Ni2W2MoV不锈钢冲击性能不合格原因探讨

Reasons Discussion on Unqualified Impact Properties of 1Cr11Ni2W2MoV Stainless Steel

通过对99件成分存在波动的1Cr11Ni2W2MoV不锈钢经不同温度回火后的力学性能进行统计分析, 探讨了该钢经常出现冲击性能不合格的原因。结果表明: 造成该钢冲击性能不合格的原因主要是化学成分的波动和回火温度偏低, 将回火温度提高至680～710 ℃可以有效提高该钢冲击性能的一次合格率。
The impact properties unqualified reasons of 1Cr11Ni2W2MoV stainless steel were discussed by statistically analyzing the mechanical properties of 99 pieces of specimens which had a certain chemical compositions fluctuation after tempering at different temperature. The results show that the main reasons for the unqualified impact properties were the chemical compositions fluctuation and the lower tempering temperature. Raising the tempering temperature to 680-710 ℃ could effectively improve the impact properties passing rate of 1Cr11Ni2W2MoV stainless steel.

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