首页>
外国专利>
TUBE END BENDING PREVENTING DEVICE IN SIZING MILL FOR SEAMLESS STEEL TUBE
TUBE END BENDING PREVENTING DEVICE IN SIZING MILL FOR SEAMLESS STEEL TUBE
展开▼
机译:无缝钢管定径轧机的管端弯曲防止装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
PROBLEM TO BE SOLVED: To reduce the cutting allowance of a tube end and to product a seamless steel tube with an excellent yield by providing a wear resistant layer on the guide surface coming into contact with the steel tube and moreover arranging so that the gap between a rolling roll and the guide becomes a specified value or below. ;SOLUTION: A sizing mill is composed of plural roll stands, and the guide 4 for preventing the bending of the seamless steel tube under rolling is provided between the final stand 1 and the stand 2 just before the final stand. In this guide 4, the gap between the roll and the guide is meant by (g) and the difference of the roll caliber surface and the guide inner peripheral surface is meant by (d). In order to roll without the tube being caught (g) is necessitated to be ≤3mm. Further, the guide is arranged so that (d) becomes e.g. ≤1.5mm at the maximum. Also, wear resistant metal containing Cr3C2 powder (compounding ratio 50%) is thermally sprayed on the guide surface coming into contact with the tube.;COPYRIGHT: (C)1998,JPO
展开▼
机译:要解决的问题:通过在导向表面上与钢管接触并设置一层耐磨层,以减小管端的切割余量,并以优异的成品率生产无缝钢管,并且滚动辊,并且引导线变为指定值或以下。 ;解决方案:施胶轧机由多个轧机机架组成,在最终机架1和机架2之前的最后机架之间设有防止轧制时无缝钢管弯曲的导向装置4。在该引导件4中,辊与引导件之间的间隙由(g)表示,辊口径表面与引导件内周表面的差由(d)表示。为了在不被卡住的情况下滚动(g),必须≤3mm。此外,引导件被布置成使得(d)变为例如。最大≤1.5mm。另外,将含Cr 3 Sub> C 2 Sub>粉末(混合比为50%)的耐磨金属热喷涂到与管子接触的导向表面上。 1998年,日本特许厅
展开▼