聚磁介质用不锈导磁材料开发

Development of stainless steel magnetic conductive material used for magnetic matrices

为了改善现有强磁选机聚磁介质耐磨、耐腐蚀能力,提高其聚磁性能,开展了聚磁介质用不锈导磁材料制备、显微组织观察、力学性能测试、耐腐蚀性能及磁性能测试试验。结果表明,利用真空熔炼炉进行钢水熔炼、热轧、完全退火处理后可制备出屈服强度为287 MPa、显微硬度为148HV、腐蚀速率为10-8 A/cm^2、背景场强为35A条件下的磁化磁场强度为14 000Gs、剩磁强度为1 056Gs的不锈导磁聚磁介质用材料。

In order to improve the wear resistance and corrosion resistance of the magnetic media of the high-intensity separators,and increase its magnetic properties,a series of experiments were carried out including the preparation of the stainless magnetic conductive material used for the magnetic media,the microstructure observation,the mechanical property test,and the corrosion resistance and magnetic property test.Experimental results showed that by smelting the molten steel in the vacuum melting furnace,hot rolling and full annealing,the stainless magnetic conductive medium material can be obtained,whose yield strength was 287 MPa,microhardness was 148 HV and corrosion rate was 10-8 A/cm^2.Meanwhile,the magnetization field strength was 14 000 Gs and the magnetic remanence intensity was 1 056 Gs under the background field strength of 35 A.