SACM645冷墩钢材品质 上海立沃开发生产量连铸坯,一提的关键技术措施是尽量减轻连铸过程中钢水的二次氧化并确保连铸坯低倍表面质量:
(1)保护浇铸:大包、中包、结晶器采用长水口、浸入式水口、覆盖剂、保护渣。
(2)采用设置挡渣堰的中包并使钢水深度超过650mm,保护渣w(Al2O3)≤4%,使浇铸过程中产生的Al2O3夹杂物被保护渣吸收并控制较低的拉速。
(3)采用小振幅、高振频的参数,并控制结晶器液面波动不超过 20mm(无液面控制系统);保护渣采用预溶型颗粒,少加勤加。
(4)中包钢水过热度在20~35℃以内,为防止中包钢水湿度波动过大,大包、中包加盖浇铸;优化连铸二冷制度,采取气雾冷却技术弱冷;拉速≤1.6m/min,矫直温度≥950℃。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,