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本技术采用的滚模是由多个自由辊子组成一个变形区,由于多辊滚模速度差小和摩擦阻力小,从而可以较显著地减少拔制应力和不均匀变形,为拔制高精度和高光洁度异型管创造了有利条件。其特点是可提高工具
The roller used in the technology is formed by a plurality of free rollers to form a deformation zone. Due to the small speed difference and the small frictional resistance of the multi-roller roller, the drawing stress and the non-uniform deformation can be remarkably reduced, High-profile shaped tube has created favorable conditions. Its characteristic is to improve the tool