电磁离心铸造对高铬铸铁性能的影响  

Effects of Electromagnetic Centrifugal Casting on Properties of High Chromium Cast Iron

作　　者：孙凯[1] 宋世明[2] 李壮[3] 

机构地区：[1]辽宁工程技术大学创新实践学院,辽宁阜新123000 [2]辽宁工程技术大学机械工程学院,辽宁阜新123000 [3]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《热加工工艺》2012年第9期33-34,共2页Hot Working Technology

摘　　要：为了提高高铬铸铁衬板的力学性能,本实验使用电磁离心铸造方法进行试样浇铸,同常规浇铸的试样进行比对。结果表明:电磁离心铸造获得试样的组织明显细化,晶粒数量增多,晶粒尺寸变小,力学性能提高。当离心转速为1500 r/mi n,磁感应强度为0.5T时,电磁离心铸造铸态试样的硬度为55.3 HRC,热处理后硬度为65.3 HRC。铸造硬度较常规试样提高10%,相对耐磨性β较常规浇铸试样提高5%。In order to improve the mechanical properties of the high chromium cast iron,electromagnetic centrifugal casting method of the casting specimen was carried out experimentally to compare the conventional casting.The results show that after electromagnetic centrifugal casting,samples structure is refined,grains quantity increase;the grain size get smaller;mechanical properties increase.When the centrifugal speed is 1500r/min,magnetic induction of 0.5T,the electromagnetic centrifugal casting hardness of cast specimens is 55.3HRC,the hardness of 65.3HRC after heat treatment.Hardness increases by 10% than conventional cast samples,relative wear resistance β of cast sample is improved 5% than that of the conventional methods treated.

关 键 词：高铬铸铁 电磁离心铸造 硬度 耐磨性 

分 类 号：TG251.2[金属学及工艺—铸造]