SNCM815冷墩钢材品质 轧制
首钢型材厂使用130mm连铸方坯试轧盘圆。该厂设备:加热炉为三段式推钢加热炉;轧机为16架,其中粗轧8架,精轧8架;冷床为齿条步进式。130mm连铸方坯在加热过程中严格控制加热炉各段温度,开轧温度范围在1038~1073℃,平均为1054℃。晶粒度为8.5级。为细化晶粒水冷,冷却段长度12m,总流量234m3/h,穿水冷却后钢材平均温度由终轧时的1130℃降为960℃。ML35的Φ18mm冷镦钢力学性能屈服强度σs364MPa、抗拉强度σb559MPa、延伸率δ528%,断面收缩率ψ853%,基本上能满足标准要求。
莱钢用下注法铸锭(678kg),钢锭修磨后轧制成60mm*60mm方坯,再轧成盘圆。主要材质有:SWRCH6A、SWRCH8A、SWRCH10A、SWRCH15A,SWRCH18A, SWRCH22A, SWRCH35K,SWRCH45K,ML08AL,ML40CR,30CrMnTi,ML20MnTiB,ML35,ML15,SWRM6-1,SCM435,B55SiCr、60Si2MnA、SWRH90A、ER70S-G、GCr15 MFT8, 35CrMo、20Cr、20Mn2、20CrMnMo、30CrMnTi、T07A、QD08,35#,45#, SCM440等价格优惠! SCM415,SCM420,SCM435,SCM440,B7,ML20CRMO,ML35CrMO,ML42CrMO,ML20MnTiB,10B18,10B21,10B28,10B30,10B33,10B38,ML20CrMnTi,30crmnti 50BV30 GCr15 40#,45#,65#,70#,80# SWRH42B, SWRH47B, SWRH72B, SWRH77B,S10C,S20C,S40C,S50C SWRH82A,SWRH82B,87B SWRM6,SWRM10,SWRM12,SWRM15,XGM2 6 5Mn,60Si2MnA,55SiCr,60Si2CrVAT 16MNCR5 ∮6.5—42 SWRCH6A, SWRCH10A, SWRCH18A, SWRCH22A,ML08AL,ML10AL,SWRCH10K, SWRCH15K,SWRCH20K,SWRCH35K, SWRCH40K,SWRCH45K, SWRCH50K,SAE1010,SAE1012,SAE1015,SAE1020,SAE1022,SAE1035,SAE1045,