Effects of Magnetic Induction Intensity on Microstructure and Propertiesof Electromagnetic Centrifugal Casting High Cr Cast Iron

Sun Kai1; Fu Shuanshuan2; Zhang Hongxue2

doi:10.15980/j.tzzz.2012.04.032

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Effects of Magnetic Induction Intensity on Microstructure and Propertiesof Electromagnetic Centrifugal Casting High Cr Cast Iron
Vol. 32, Issue 4, Pages: 364-366(2012)
Published： 2012 ，
DOI： 10.15980/j.tzzz.2012.04.032

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[1]孙凯,付拴拴,张鸿雪.磁感应强度对电磁离心铸造高铬铸铁的影响[J].特种铸造及有色合金,2012,32(04):364-366.

Sun Kai1, Fu Shuanshuan2, Zhang Hongxue2. Effects of Magnetic Induction Intensity on Microstructure and Propertiesof Electromagnetic Centrifugal Casting High Cr Cast Iron. [J]. Special Casting & Nonferrous Alloys 32(4):364-366(2012)
[1]孙凯,付拴拴,张鸿雪.磁感应强度对电磁离心铸造高铬铸铁的影响[J].特种铸造及有色合金,2012,32(04):364-366. DOI： 10.15980/j.tzzz.2012.04.032.

Sun Kai1, Fu Shuanshuan2, Zhang Hongxue2. Effects of Magnetic Induction Intensity on Microstructure and Propertiesof Electromagnetic Centrifugal Casting High Cr Cast Iron. [J]. Special Casting & Nonferrous Alloys 32(4):364-366(2012) DOI： 10.15980/j.tzzz.2012.04.032.

摘要

为了提高高铬铸铁衬板的力学性能

使用电磁离心铸造浇注

并和常规重力离心铸造的试样进行了对比。结果表明

电磁离心铸造获得的试样组织明显细化

晶粒数量增多

晶粒尺寸细小

力学性能提高。当离心转速为1500r/min

磁感应强度为0.5T时

电磁离心铸造铸态试样的硬度（HRC）为55.3

冲击韧度为6.87J/cm2;热处理后的硬度（HRC）为65.3

冲击韧度达到7.3J/cm2。试样硬度比常规铸造试样提高了约10%

冲击韧度提高了约9%

相对耐磨性提高了约5%。

Abstract

In order to improve mechanical properties of the high chromium cast iron liner

the specimens were produced by electromagnetic centrifugal casting

and were comparatively analyzed with conventional casting specimens.The results show that microstructure of the electromagnetic centrifugal casting specimens is refined significantly

and grains are increased with the decrease of the grain size

evidently improving the mechanical properties of the specimens.With centrifugal velocity of 1 500 r/min and magnetic induction intensity of 0.5 T

the hardness and impacting toughness of the electromagnetic centrifugal casting specimens reach HRC 55.3 and 6.87 J/cm2

respectively

and after heat treatment

hardness and impacting toughness reach HRC65.3 and 7.3 J/cm2

respectively.Compared with those of the conventional casting ones

hardness

impacting toughness and relative wear resistance of the specimens prepared are increased by 10%

8% and 5%

respectively.