无缝钢管连续斜轧工艺与设备的探索

发布时间：2018-07-04 15:51

本文选题：斜连轧 + 无缝管材　；参考：《机械工程学报》2017年10期

【摘要】：提出一种无缝钢管连续斜轧的新工艺——斜连轧工艺,将传统斜轧生产无缝钢管工艺中的穿孔和轧制两道成形工艺,用连续斜轧的方法直接将管坯穿轧成荒管,实现了穿孔+轧制延伸、穿孔+二次穿孔和多道次斜轧变形的连续轧制,是无缝钢管生产短流程新工艺的探索。针对斜连轧工艺变形的特殊性,采用流函数的方法对变形过程进行建模分析,寻求到合理的流函数,并求得满足体积不变条件和速度边界条件的速度场方程,为进一步求解应变速率、变形功率、工艺参数等构建塑性变形理论基础。为验证工艺的可行性,开发研制三辊斜连轧试验样机,并结合分析计算的工艺参数展开工艺探索试验,经多次试验,能够顺利穿轧无缝钢管,证明了该工艺的可行性和数学模型准确性,为进一步的生产应用奠定基础。
[Abstract]:A new technology of continuous cross rolling of seamless steel tube, oblique continuous rolling process, is put forward. Two forming processes of piercing and rolling in traditional cross rolling process of seamless steel tube are put forward, and the tube billet is directly rolled into barren pipe by continuous cross rolling method. The continuous rolling of rolling extension, secondary perforation and multi-pass cross rolling deformation is the exploration of a new short process for seamless steel pipe production. In view of the particularity of oblique continuous rolling process, the flow function method is used to model and analyze the deformation process, and a reasonable flow function is obtained, and the velocity field equation satisfying the volume invariant condition and the velocity boundary condition is obtained. In order to further solve the strain rate, deformation power, process parameters and other theoretical basis of plastic deformation. In order to verify the feasibility of the process, a three-roll inclined continuous rolling test prototype was developed, and the technological exploration test was carried out in combination with the process parameters analyzed and calculated. After many tests, the seamless steel tube can be successfully pierced. The feasibility of the process and the accuracy of the mathematical model were proved, which laid a foundation for further production and application.
【作者单位】：太原科技大学材料科学与工程学院;运城学院机电工程系;
【基金】：山西省回国留学基金(2012-074) 山西省自然科学基金(2016011029)资助项目
【分类号】：TG335.71

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