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1 高硫铸铁的衰退 Passos J.P..59th World Foundry Congr.,92 研讨用混合稀土金属和普通的FeSiMg球化剂同时处理S0.050％～0.080％的高硫铁水时的衰退现象。在混合稀土金属中所含的稀土类金属,置换MgS形成了稳定的硫化物,它部分消除了硫的有害作用。图4表2参9
1 Recession of high-sulfur cast iron Passos J.P. 59th World Foundry Congr., 92 The recession in the treatment of S0.050% ~ 0.080% high-sulfur hot metal with mixed rare earth metals and ordinary FeSiMg nodulizer was studied. The mischmetal contained in the mixed rare earth metals displaces MgS to form a stable sulfide that partially eliminates the detrimental effects of sulfur. Figure 4 Table 2 参 9