我们用的多用炉工装是2520的,曾经做了个齿圈的渗碳工装,用A3的,重量280Kg,用了5-6次就变形的不能用了,只有校平了;后来用了2520整体铸造的用到现在已经做了几十炉,钢稍微有点变形;
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一般都是用Cr25Ni20和1Cr18Ni9Ti耐热钢.铸造的要比焊接的使用寿命长一点.
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