本发明是关于改善油封的密封性能,具体地说是有关油封表面处理方法的专利发明。以前的油封是由合成胶等弹性体制成,带有密封唇,此密封唇的刃口与偶合的轴发生滑动接触,以防止润滑油向外泄漏,然而由于该密封唇刃口对于相偶合的轴来说加工精度过高等,就会降低润滑性能。由于旋转摩擦引起唇刃口部位发热、烧结,造成密封不良,反过来说,密封唇刃口若粗糙,也会引起漏油而破坏密封性能,这是它的缺点,要保持这种油封的密封性,在密封唇及偶合轴的接触面必须有一定的间隙和适当的粗糙度, The present invention relates to improving the sealing performance of an oil seal, and more specifically, to a patented invention relating to an oil seal surface treatment method. In the past, the oil seal was made of an elastomer such as a synthetic rubber with a sealing lip whose edge came into sliding contact with the coupled shaft to prevent the lubricating oil from leaking to the outside. However, Shaft machining accuracy is too high, it will reduce the lubrication performance. Rotational friction caused by the lip edge heat, sintering, resulting in poor sealing, on the contrary, the rough seal lip edge can also cause oil leakage and damage the sealing performance, which is its drawback, to maintain the seal of this oil seal Sex, the sealing lip and coupling shaft contact surface must have a certain gap and the appropriate roughness,