材料期刊网

The tube rotation method (TRM) refers to the rotational movement of steel tube about its axis as well as translation in rolling direction in stretch reducing rolling process. The inlfuence of the TRM on transverse wall thickness precision of seamless steel tube was studied. Thickness distribution of the TRM was obtained by superimposing the thickened amount of single pass roll-ing. Results show that the TRM can effectively improve the evenness of thickness distribution. In order to analyze the inlfuence mechanism of the TRM, the ifnite element method was adopted to simulate the thickness distribution in stretch reduction process. Results show that the TRM changes the roundtrip lfow between two ifx places of conventional stretch reducing and inhibits the directional accumulation of metal. In addition, the TRM has a correction effect on thickness cusp. All these advantages of the TRM help to improve the transverse wall thickness precision of seamless steel tube.