The mechanism of High speed spin drawing for manufacturing copper inner fin tube is studied systematically, especially the process and parameters of inner fin formation arc analysed.
对内螺纹理片铜管的高速旋压拉伸成形加工机理进行了系统研究，分析了加工过程及参数。
In high speed drawing process, the pressure gradient of coating in die determines the magnitude of centering force and the concentricity of coating layers.
高速拉丝过程中，模具中涂料的压力梯度决定了对中作用力和光纤涂层同心度的大小。
To simulate wire drawing process conditions of consumers, the ER70S-6 high speed wire rod for welding wire, which is rolled with shrinkage void square billet at center, is drawn.
模拟用户的拉丝工艺条件，对中心缩孔方坯轧制的ER70S - 6焊丝用高线盘条进行拉拔试验。
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