SACM645冷墩鋼材品質(zhì) 上海立沃開(kāi)發(fā)生產(chǎn)量連鑄坯,一提的關(guān)鍵技術(shù)措施是盡量減輕連鑄過(guò)程中鋼水的二次氧化并確保連鑄坯低倍表面質(zhì)量:
?。?)保護(hù)澆鑄:大包、中包、結(jié)晶器采用長(zhǎng)水口、浸入式水口、覆蓋劑、保護(hù)渣。
?。?)采用設(shè)置擋渣堰的中包并使鋼水深度超過(guò)650mm,保護(hù)渣w(Al2O3)≤4%,使?jié)茶T過(guò)程中產(chǎn)生的Al2O3夾雜物被保護(hù)渣吸收并控制較低的拉速。
?。?)采用小振幅、高振頻的參數(shù),并控制結(jié)晶器液面波動(dòng)不超過(guò) 20mm(無(wú)液面控制系統(tǒng));保護(hù)渣采用預(yù)溶型顆粒,少加勤加。
(4)中包鋼水過(guò)熱度在20~35℃以內(nèi),為防止中包鋼水濕度波動(dòng)過(guò)大,大包、中包加蓋澆鑄;優(yōu)化連鑄二冷制度,采取氣霧冷卻技術(shù)弱冷;拉速≤1.6m/min,矯直溫度≥950℃。主要材質(zhì)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等價(jià)格優(yōu)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,