含氮稀土耐热钢H_1的研制

Heat Resisting Steel Containing Nitrogen and Rare Farth Elements H_1

用作高温还原反应罐的H0 耐热钢 (1Cr2 5Ni2 0 )性能优良 ,但生产成本高。笔者研制开发的含氮稀土H1耐热钢 (3Gr2 5Ni8REN)具有镍低、性能优良的特点。H1钢的高温抗氧化性能、高温持久强度和抗热疲劳性能均优于H0 钢 ,可以长期在 12 0 0℃左右高温下工作 ,使用寿命为H0 钢还原罐的 1.5倍左右。H1钢的生产成本仅为H0 钢的 2 /3左右 ,其经济效益十分显著。文中叙述了选择H1耐热钢化学成分的理论依据 ;H1和H0 耐热钢的冶炼工艺 ,材料性能测试方法和测试数据 ,并作了两种钢的性能比较 ,结果表明H1钢完全可以替代H0 钢用于制作生产Mg。

In order to take the place of costly heat resisting steel 1Cr25Ni20,an advanced heat resisting steel containing nitrogen and rare earth elements 3Cr25Ni8REN have been designed and prepared. The properties of 1Cr25Ni20 and 3Cr25Ni8REN have been determined, It is proved that the heat resisting properties of 3Cr25Ni8REN are better than that of 1Cr25Ni20, the production cost of 3Cr25Ni8REN is two thirds of that of 1Cr25Ni20, the working life of chemical reactor made of 3Cr25Ni8REN is one point five time length of that made of 1Cr25Ni20 and the chemical reactor made of 3Cr25Ni8REN can work at 1200℃ over a long period of time.