研究拉深用润滑剂的摩擦特性

拉深用润滑剂在使用中的摩擦特性与拉深工艺之间的关系目前研究的还比较少,本文针对这一内容进行研究.实验采用拉深工艺模拟试验机作为实验手段,研究油基和水基润滑剂在给定不同压边力值条件下的润滑性能、以及坯料直径变化对润滑性能的影响.实验结果表明:(1)在拉深过程中,水基润滑剂存在一个最佳压边力范围,在这一范围内水基润滑剂具有比油基润滑剂摩擦系数小、拉深性能好的特点.当超过这一范围时,摩擦系数明显增大,拉深性能变差.(2)油基润滑剂基本不受压边力的影响.(3)拉深坯料直径的变化对油基和水基润滑剂的摩擦性能都基本无关系.(4)建立了水基润滑剂的摩擦系数与拉深压边力之间关系的实验方程.

Ressarch on the Friction Characteristic of Lubricants Used in Drawing Process

This paper describes the relationship between friction characteristic of drawing lubricat and drawing process, which is not widely studied. A drawing process simulation testing press is used to analyze the perfoumance of oil - based and water - based lubricant under different binding pressure and blank diameter. Extensive experiments show that: (1) There exists an optimal range of binding pressure for water - based lubricant in drawing process; (2) Binding pressure basically has mo influence on oil - based lubricant; (3) The friction performance of water - based or oil - based lubricant is generally not relative to drawing blank diameter; (4) The experimental equation about the relationship of binding pressure to the friction coefficient for water- based lubricant is established.