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在汽车板簧生产过程中,抛丸是一道十分重要的工序。它可使板簧的疲劳寿命成倍提高,使用寿命大大延长。强化抛丸的主要途径有三条:一是提高钢丸速度,使其具有更高的功能;二是降低钢丸与叶轮间的冲击和摩擦,减少能量损失;三是保证进入叶轮两相邻叶片间的钢丸有足够的数量,增加抛丸密度。增大叶轮转速、加大叶轮直径,提高叶片表面光洁度,均能使抛丸强化。但是,这些办法,会增加动力消耗、材料消耗和加工费用。能否在不增加它们的前提下,通过改变叶轮结构而使抛丸得到强化呢?这正是本文所要探讨的问题。
Shot blasting is a very important process in the production of car leaf spring. It can double the fatigue life of leaf springs, greatly extending the service life. There are three main ways to strengthen shot blasting: one is to increase the speed of steel shot to make it have higher function; the other is to reduce the impact and friction between steel shot and impeller and reduce the energy loss; the third is to ensure that two adjacent blades There is a sufficient amount of shots between shots to increase shot blasting density. Increase the impeller speed, increase the diameter of the impeller to improve the blade surface finish, can make shot peening. However, these measures will increase power consumption, material consumption and processing costs. Can we enhance shot blasting by changing the structure of the impeller without increasing them? This is exactly the question to be explored in this article.