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研究了采用锥形辊、导板和圆柱芯棒的斜轧延伸工艺的附加变形、滑移和螺距，并与曼式二辊斜轧延伸工艺作了比较。研究结果表明，锥形辊在变形、运动学方面具有明显的优点，金属的附加变形小，消耗的变形功少，轧管质量好。
The additional deformation, slippage and pitch of the slant roll extension process using conical roll, guide plate and cylindrical mandrel were investigated and compared with the Mann two-roll oblique roll extension process. The results show that the conical roller has obvious advantages in deformation and kinematics. The additional deformation of the metal is small, the work of deformation is less and the quality of the pipe is good.