SNCM815冷墩鋼材品質(zhì) 軋制
首鋼型材廠使用130mm連鑄方坯試軋盤(pán)圓。該廠設(shè)備:加熱爐為三段式推鋼加熱爐;軋機(jī)為16架,其中粗軋8架,精軋8架;冷床為齒條步進(jìn)式。130mm連鑄方坯在加熱過(guò)程中嚴(yán)格控制加熱爐各段溫度,開(kāi)軋溫度范圍在1038~1073℃,平均為1054℃。晶粒度為8.5級(jí)。為細(xì)化晶粒水冷,冷卻段長(zhǎng)度12m,總流量234m3/h,穿水冷卻后鋼材平均溫度由終軋時(shí)的1130℃降為960℃。ML35的Φ18mm冷鐓鋼力學(xué)性能屈服強(qiáng)度σs364MPa、抗拉強(qiáng)度σb559MPa、延伸率δ528%,斷面收縮率ψ853%,基本上能滿(mǎn)足標(biāo)準(zhǔn)要求。
萊鋼用下注法鑄錠(678kg),鋼錠修磨后軋制成60mm*60mm方坯,再軋成盤(pán)圓。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,