【摘要】 通过对离心铸造和砂型铸造高铬铸铁电缆拉丝轮的组织与性能研究发现，离心铸造高铬铸铁的碳化物及马氏体组织得到细化，其硬度虽未有明显变化，但其冲击韧性却有显著提高；离心铸造可有效地减少高铬铸铁电缆拉丝轮的夹杂、缩松等缺陷，提高铸件的工艺出品率和使用寿命。更多还原

【Abstract】 Abstract Investigation was conducted into microstructure and properties of cable drawing wheel of highchromium cast iron produced by both centrifugal and sand casting,it has been found that the carbides and martensite in highchromium cast iron become finer with centrifugal casting.Although there is no change in the hardness,the impact toughness is increased substantially,the shrinkage porosity and inclusion in highchromium iron castings can be diminished effectively with centrifugal casting.更多还原