高效能三輥軋管機生產不銹鋼管工藝發展狀況
經典三(san)(san)(san)輥軋(ya)(ya)(ya)管(guan)機僅(jin)用于(yu)不銹(xiu)(xiu)鋼厚(hou)壁管(guan)的生產(chan)，應用這(zhe)(zhe)種(zhong)軋(ya)(ya)(ya)制(zhi)不銹(xiu)(xiu)鋼管(guan)工藝受(shou)到軋(ya)(ya)(ya)件(jian)(jian)“三(san)(san)(san)角形(xing)”形(xing)成的限(xian)制(zhi)，而這(zhe)(zhe)一傾向(xiang)在軋(ya)(ya)(ya)制(zhi)薄壁不銹(xiu)(xiu)鋼管(guan)時尤(you)為明顯。“三(san)(san)(san)角形(xing)”的形(xing)成使(shi)軋(ya)(ya)(ya)件(jian)(jian)承受(shou)交替的彎曲應力(li)，以致產(chan)生裂紋(wen)，并在軋(ya)(ya)(ya)出端形(xing)成“三(san)(san)(san)角形(xing)”，有時造成“后卡”。這(zhe)(zhe)種(zhong)傾向(xiang)在D/S值大時特別嚴(yan)重，...
