内螺旋翅片铜管充液旋压成形加工的研究

Study on the Oil Filled Spinning of Copper Inner Spiral Fin Tubes

对内螺旋翅片铜管的充液旋压成形加工进行了系统研究，着重分析了充液旋压过程中形成动压油膜的条件和特点，并建立了数学模型。实验结果表明：随着旋速和润滑油粘度的提高，流体动压润滑作用逐渐明显，被加工管的拉拔力减小，且加工后管外表面粗糙度值减小。

The oil filled spinning of copper inner spiral fin tubes is studied systematically The conditions and characteristics of generating dynamic oil film are analysed especially during oil filled spinning, and a mathematical model is constructed The theoretical and experimental results show that the effects of hydrodynamic lubrication raise with the increase of spinning speed and oil viscosity, and the drawing load and surface roughness decrease