采用工藝自動控制提高無縫鋼管壁厚精度

Employment of Process Auto-control to Improve Wall Thickness Tolerance of Seamless Steel Tube

摘要: 介紹了國外對無縫鋼管縱向壁厚精度和橫向壁厚精度的試驗研究情況,以及壁厚控制系統(tǒng)(ECS)在軋管廠的應用。針對由斜軋穿孔機、全浮動芯棒連軋管機、張力減徑機組成的軋管工藝,指出應將張力減徑切頭控制技術(CEC)與管端軋薄工藝(FTS)結(jié)合。并指明當今對軋管工藝的研發(fā)應從工藝技術本身和自動控制軟件包兩個方面著手。

Abstract: Described in the article are the experimental researches on both longitudinal and transverse wall thickness tolerances of the seamless steel tube as made overseas,and application of the tube Eccentricity Control System(ECS)in foreign pipe-rolling plants.Addressing the pipe-rolling process consisting of rotary piercing mill,full-floating mandrel mill and stretch reducing mill,it is pointed out that both the Crop End Control(CEC)technique of the stretch reducing mill and the Front-Tail Sharpening(FTS)process should be jointly employed.It is also emphasized that at present the R & D of tube-rolling technology should focus on the process technology itself and the auto-control software packages.