电磁离心铸造对高铬铸铁力学性能的影响  

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

作　　者：孙凯[1] 赵琳[2] 刘晟荥[2] 张殿杰[2] 

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]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《铸造》2012年第1期29-31,共3页Foundry

摘　　要：试验采用电磁离心铸造方法浇注高铬铸铁试样,并同常规浇注的试样进行比对。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1 500 r/min,磁感应强度为0.5 T时,电磁离心铸造铸态试样的硬度为HRC 55.3,冲击韧度为6.87 J/cm2。铸造硬度较常规试样提高10%,冲击韧度提高8%,相对耐磨性β较常规浇注试样提高5%。The samples of high chromium cast iron were prepared by electromagnetic centrifugal casting and compared with the specimens by conventional casting. The results show that the sample obtained by electromagnetic centrifugal casting has fine structure, more grains, smaller grain size, and improved mechanical properties compared with that by conventional casting. When the centrifugal speed is 1 500 r/min, the magnetic flux density is 0.5 T, the hardness and impact toughness of cast specimens by the electromagnetic centrifugal casting are HRC 55.3 and 6.87 J/cm2, which increased by 10% and 8%, respectively compared with the conventional specimen; and the relative wear resistance/3 is increased by 5%.

关 键 词：硬度 冲击韧度 耐磨性 

分 类 号：TG249.4[金属学及工艺—铸造]