电液控制器用加Bi-Ce易切削不锈钢1.4104的开发  

Development of Adding Bi-Ce Free-Cutting Stainless Steel 1.4104 for Electro-hydraulic Controller

作　　者：雷应华 刘尚潭 张军 郑振宇 廖凯 Lei Yinghua;Liu Shangtan;Zhang Jun;Zheng Zhenyu;Liao Kai(Daye Special Steel Co Ltd,Special Products Research Institute,Huangshi 435001;Hubei Province Key Laboratory of High Quality Special Steel,Huangshi 435001;Huangshi Product Quality Supervision and Inspection Institute,Huangshi 435000)

机构地区：[1]大冶特殊钢有限公司特冶产品研究所,黄石435001 [2]高品质特殊钢湖北省重点实验室,黄石435001 [3]黄石市产品质量监督检验所,黄石435000

出　　处：《特殊钢》2022年第1期73-77,共5页Special Steel

摘　　要：大冶特钢公司电液控制器用高端不锈钢1.4104(/%:0.16C,1.23Mn,16.40Cr,0.41Ni,0.43Mo,0.023Ca)采用20 t电弧炉初炼、LF与VD精炼,铸1.2 t锭,径锻成材工艺生产,通过喂入Bi包芯线(Bi:0.036%)与稀土球化剂(Ce:0.054%)后该钢横向力学性能与切削性能大幅提高。与无Bi-Ce钢相比,含Bi-Ce钢夹杂物总量减少84.4%,MnS夹杂减少85.5%,夹杂物平均尺寸由4.5μm增至13.7μm,切削力平均降低70~80 N,切屑更厚,更加易断,横向断面收缩率由3%提高至17%。Quality stainless steel 1.4104(/%:0.16 C,1.23 Mn,16.40 Cr,0.41 Ni,0.43 Mo,0.023 Ca)for electro-hydraulic controller has been first melted at Daye Special Steel Co Ltd by 20 t electronic arc furnace and refined in ladle furnace and vacuum degassing unit,cast 1.2 t ingot and forged into products.The transverse mechanical properties and machinability have been enhanced significantly by feeding bismuth cored wires(Bi:0.036%)and adding rare earth nodulizer(Ce:0.054%).Comparing with that of the free Bi-Ce steel,the total number of inclusion of the containing Bi-Ce steel decreases by 84.4%and the number of MnS inclusion decreases by 85.5%,average size of inclusion increases from 4.5μm to 13.7μm and cut force lower by 70~80 N with thicker and more easily broken chips,the transverse reduction of area increases from 3%to 17%.

关 键 词：真空脱气 易切削不锈钢1.4104 Bi-Ce 硫化物球化 切削性能 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TD355.4[金属学及工艺—金属材料]