高冲击功抗硫化氢耐低温阀体的试制开发

Development of Anti-low Temperature Valve with High Impact Energy Resistance and Hydrogen Sulfide Resistance

通过优化设计碳、锰、硅元素含量及锰碳比、碳当量，将碳含量控制在0．18％～O．22％，锰含量控制在1．22％～1．32％，保证锰碳比≥6；合理设计热处理工艺，试制开发了LCC-1阀体，并且性能检验表明产品性能全部满足标准要求。采用调质处理工艺，产品已进行了批量生产，一次送检合格率达到98％以上。

Thrnugh optimizing designs of carbon, manganese, silicon elements and proportion of carbon and manganese and carbon equivalent, controlling carbon content within 0.18%-0.22% and manganese content within 1.22%-1.32% and the ratio of manganese/ carbon≥ 6, the Lcc-1 valve was developed by reasonable design for heating treatment process. The tests showed that the all properties of trial products met the standard requirements. The composition and process design is rational and feasible. Adopting the quenching and tempering treatment, the products have been mass production, and the once inspection pass rate run up to more than 98%.