中文摘要：

在这篇论文，高级低共熔体的高 Cr 生铁的戒指类型铸块锭被使身体离心的烧铸方法(SC-CCM ) 凉下来的斜坡获得，并且它的微观结构和影响坚韧分别地被调查。首先，结果显示了那在微观结构的主要碳化物比在高级低共熔体的高 Cr 的那些显著地好铸铁制成由常规烧铸方法准备了。在戒指类型铸块锭，第二，主要碳化物接近光线的外部地比那些好近光线的内部地；而且，在微观结构正在划分地。最后，在光线的外部脸上并且在光线的内部脸上影响的标本的影响坚韧价值分别地被改进大约 36% 并且多于高级低共熔体的高 Cr 那的 138percent 由常规烧铸方法准备了。

英文摘要：

In this paper, the ring-type ingot of hypereutectic high Cr cast iron was obtained by slope cooling bodycentrifugal casting method （SC-CCM）, and its microstructure and impact toughness were investigated, respectively. The results indicated that, first, the primary carbides in the microstructure are prominently finer than those in the hypereutectic high Cr cast iron prepared by conventional casting method. Second, in the ring-type ingot, the primary carbides near radial outer field are finer than those near radial inner field; furthermore, there is dividing field in the microstructure. Finally, the impact toughness values of the specimens impacted on the radial outer face and on the radial inner face are improved respectively about 36% and 138% more than that of the hypereutectic high Cr one prepared by conventional casting method.