摘要
35CrMnSiA钢采煤机截齿加热至 930℃在 10 %NaOH碱液中淬火 ,可以获得较多的板条马氏体。通过对截齿冲击韧度、小能量多冲击抗力和截齿工作状况的分析 ,发现 35CrMnSiA钢在 370℃～ 4 10℃之间存在回火脆性 ,采用 4 2 5℃回火 ,截齿强韧性较好。截齿采用先热处理而后分层堆焊的工艺 ,其强度、硬度和耐磨性都得到提高。
The sheare-picks made of 35CrMnSiA steel can gain more lath martensite when heated at 930℃ and quenched in 10%NaOH.The impact toughness,the multi-times impact strength with small energy,and the working state of picks were analyzed.The results show that temper brittleness of 35CrMnSiA steel occurred in range of 370℃ and 410℃,and tempering at 425℃ can obtain high strength and toughness of the picks.The strength,hardness and wear resistance of picks can improve after the heat treating and the subsequent by layers surfacing.
出处
《金属热处理》
CAS
CSCD
北大核心
2004年第9期40-43,共4页
Heat Treatment of Metals
关键词
截齿
热处理
堆焊
涂层
pick
heat treatment
surfacing
coating
