公开(公告)号：EP2059622A1

公开(公告)日：2009-05-20

申请号：EP07766720.2

申请日：2007-06-12

申请人： FLSmidth A/S

发明人： KARLSSON, Asger ,  KIRKEGAARD STAGE, Rasmus

IPC分类号： C22C37/08

CPC分类号： C22C37/08 ,  C22C37/10

摘要： A description is given of a temperature-stable cast-iron alloy having high wear resistance at temperatures between 500 and 900° C. The alloy is characterized in that it has the following composition expressed in weight percentages: chromium: 15.0-20.0 %, carbon: 1.0-2.0 %, manganese: 1.5-2.0 %, silicon: 0.8-1.2 %, nickel: 8.0-10.0 %, molybdenum: 0.8-1.2 % balance iron and unavoidable metallic and non-metallic contaminants where the non-metallic contaminants comprise nitrogen, oxygen, phosphorous and sulphur. Hereby is obtained a cast-iron alloy which has a higher wear resistance and a reduced tendency to form the undesirable sigma phase when heated to temperatures between 500 and 900 °C as compared to the known allows.

摘要翻译： 给出了在500和900℃之间具有高耐磨性的温度稳定的铸铁合金的描述。该合金的特征在于其具有以重量百分比表示的以下组成：铬：15.0-20.0％，碳 ：1.0-2.0％，锰：1.5-2.0％，硅：0.8-1.2％，镍：8.0-10.0％，钼：0.8-1.2％的铁和不可避免的金属和非金属污染物，其中非金属污染物包括 氮，氧，磷和硫。 因此获得了一种铸铁合金，其具有较高的耐磨性，并且与已知的允许相比，当加热至500-900℃之间的温度时，形成不希望的σ相的倾向降低。