高强度弹簧钢热处理工艺研究  

Study on Heat Treatment Process of High Strength Spring Steel

作　　者：高蔚[1] GAO Wei

机构地区：[1]核工业理化工程研究院

出　　处：《科技视界》2020年第1期152-155,共4页Science & Technology Vision

摘　　要：高强度弹簧钢是一种具备良好机械性能的金属材料。在实际应用过程中,高强度弹簧钢除需要具备高强度来应对苛刻的工况环境,如何继续提高机械性能特别是强度,是本文研究的重点和难点。成分优化和热处理是改进高强度弹簧钢机械性能的最直接方法,本文通过研究加钼之后的高强度弹簧钢的热处理工艺,最大限度发挥钢中钼元素的有益作用,达到最佳合金化效果,获得机械性能优良的高强度弹簧钢。研究发现,回火温度对高强度弹簧钢抗拉强度的影响最大,回火时间的影响次之,回火温度越低,回火时间越短,抗拉强度越好。高强度弹簧钢采用970℃×10m in淬火和350℃×0.5h回火工艺制度,抗拉强度达到1755M Pa,延伸率达到4.5%。High strength spring steel is a kind of good mechanical properties of metallic materials.In practical application high strength spring steel need to have high strength.Composition optimization and heat treatment process are direct method of improved mechanical properties.In this paper,by studying adding Mo and the heat treatment process to obtain the good mechanical properties.The study found that the tempering temperature and tempering time effect on the tensile strength of high strength spring steel is the largest, lower tempering temperature,the shorter the tempering time, the better the tensile strength.By heat treatment process 970℃×10 min+350℃×0.5 h,the tensile strength of high strength spring steel can reach 1755 MPa,ductlity can reach 4. 5 %.

关 键 词：弹簧钢 热处理 抗拉强度 

分 类 号：TG161[金属学及工艺—热处理]