1.前言小型无缝自动轧管机组多年来一直由中650或Φ500/Φ300轧机供坯,生产成本高,从锭到材的综合成材率低。因而,围绕着使用廉价原料——连铸坯的问题,国内外开展了大量的研究工作。水平连铸是六十年代发展起来的一项新技术,我国第一台双流水平连铸工业生产机1986年2月在马钢通过技术 1. Introduction Small seamless automatic pipe rolling unit for many years by 650 or Φ500 / Φ300 mill for blanking, high production costs, from the ingot to the wood composite low yield. Therefore, around the use of cheap raw materials - slab, a lot of research work at home and abroad. Horizontal continuous casting is developed in the sixties a new technology, China’s first Shuangliu horizontal continuous casting industrial production machine in February 1986 at Masteel through technology