摘要
选用 4因素 3水平 9组试验的正交试验法 ,得到了连铸Ni-Cr -Mo -V钢最佳强韧性的热处理工艺参数 ,给出冷却速度和回火温度是提高强韧性的两个主要影响因素 ,可信度达到 95 %～ 99% ,淬火温度和回火时间则为次要因素。最佳工艺参数为 :冷却速度 4 .4℃s,入水温度 6 2 0℃ ,回火温度 6 80℃ ,回火时间 4 0min。其强韧性值分别为 :抗拉强度 5 71.6MPa ,- 4 0℃冲击功
Heat treatment technology parameters of continuous casting Ni-Cr-Mo-V steel with optimum strength and toughness were obtained through orthogonal test of 4 factors,3 levels and 9 experiments.It is presented that the cooling speed and tempering temperature are the main factors to improve strength and toughness of steel.Believed degree is 95%～99%.Quenching temperature and tempering time are less important factors.The best technological parameters are cooling speed 4.4℃s,quenching temperature 620℃,tempering temperature 680℃,tempering time 40min, σ s=571.6?MPa and A kv (-40℃)=192?J.
出处
《钢铁钒钛》
CAS
北大核心
2001年第4期28-32,共5页
Iron Steel Vanadium Titanium
