热处理对轧机牌坊衬板材料性质的影响  

Influence of Heat Process on Properties of Steel for Rolling Mill Torii Liner

作　　者：纪俊红[1,2] 李向龙[3] 赵平卫[3] 赵书强[3] 黄声和[3] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110819 [2]辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛125105 [3]辽宁工程技术大学机械工程学院,辽宁阜新123000

出　　处：《热加工工艺》2013年第18期175-178,共4页Hot Working Technology

摘　　要：研究了热处理工艺对多元素低合金钢力学性能的影响。结果表明，此钢经900－920℃淬火．并在350－370℃回火后，其硬度可达60HRC以上，抗拉强度达1600MPa以上，冲击韧性达18J／cm^2以上，断裂韧性达37MPa·m^1/2以上：当淬火温度低于900℃时，合金钢的硬度会随温度的上升而提高；当淬火温度高于900℃时．合金钢的硬度就会随温度的上升而降低。在一定范围内，若淬火温度低于920℃。淬火温度对冲击韧度的影响并不明显。若淬火温度高于920℃．冲击韧度就会随温度的升高而降低。若回火温度在450℃以上，合金硬度就开始有明显下降。350℃是回火的最佳温度。此温度下制成的合金钢耐磨性最好。Effects of heating process on mechanical properties of multielement low-alloy steel were investigated. The results show that, when quenching at 900 ℃-920 ℃and tempering at 350 ℃-370 ℃, the hardness of the steel can exceed 60 HRC, the tensile strength can exceed 1600 MPa, impact strength can exceed 18 J/cm^2, and fracture toughness can exceed 37 MPa·m^1/2; When quenching temperature is lower than 900℃, the hardness of the steel is improved with the increase of temperature; When quenching temperature is higher than 900 ℃, the hardness of the steel is decreased with the increase of temperature. When quenching temperature is lower than 920 ℃, the effect of temperature on impact toughness is not obvious. When quenching temperature is higher than 920 ℃, impact toughness is decreased with the increase of temperature. When tempering temperature is above 450 ℃, the hardness of the steel is significantly decreased. 350 ℃ is the best tempering temperature because the steel can achieve best wear under this temperature.

关 键 词：轧机牌坊 衬板 热处理 耐磨性 

分 类 号：TG156.3[金属学及工艺—热处理]