热处理对再生混凝土用30MnCr22钢强塑性的影响  

Influence of Heat Treatment on Strength and Plasticity of 30MnCr22 Steel used for Recycled Concrete

作　　者：张珂峰[1] 曹青来 

机构地区：[1]南通市广播电视大学建筑工程学院,江苏南通226602 [2]南通市建筑工程质量检测中心建筑材料,江苏南通226006

出　　处：《铸造技术》2015年第8期2012-2014,共3页Foundry Technology

摘　　要：以再生混凝土用30MnCr22钢管为对象,研究了回火温度、回火时间、淬火温度和淬火保温时间对钢管强度、塑性和冲击功的影响。结果表明,再生混凝土用钢管的强塑性与淬火、回火温度及时间有较大关系;试验钢最优热处理工艺为:淬火温度880℃,保温40 min,回火温度540℃,保温时间为50 min。Taking 30 MnCr22 steel used for recycled concrete as the research object, the influence of tempering temperatures, tempering times, quenching temperatures and holding times on the strength, ductility, microstructures and impact energy of the steel were investigated. The results show that the strength and plasticity of test steel are dependent on quenching, tempering temperatures and heat treatment times; the best heat treatment conditions is quenching at 880 ℃ for40 min, then tempering at 540℃for 50 min.

关 键 词：30MnCr22钢 淬火 回火 显微组织 力学性能 

分 类 号：TG161[金属学及工艺—热处理] TG142.1[金属学及工艺—金属学]