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齿轮轮齿是在三个相互不同的润滑状态下运转。在很低的节园线速度下,只存在边界润滑。这时,特别容易产生胶合和点蚀。采用加有强添加剂的高粘度润滑油,会有助于改善润滑状态Ⅰ的工况。在中等节园线速度下将存在混合润滑。这时,点蚀寿命会有所改善。在润滑状态Ⅱ下,润滑油的性能要求仍然是十分关键的。在较高和很高的节园线速度下,可得到完全EHD油膜。在润滑状态Ⅲ下,可以采用较低粘度的润滑油,并且加有弱添加剂,通常也就可以了。在油膜内引起的闪现温度使胶合变得更为危险。
Gear teeth are operated in three different lubrication states. At very low knuckle speeds, there is only boundary lubrication. In this case, gluing and pitting are particularly apt to occur. Using a highly viscous lubricant with a strong additive will help to improve lubrication condition I conditions. There will be mixed lubrication at mid-section line speeds. At this time, pitting life will be improved. In Lubrication State II, the performance requirements for lubricants are still critical. At higher and higher pitch speeds, a complete EHD film is available. In the lubrication state III, you can use a lower viscosity lubricant, and add a weak additive, usually it can be. The flashing temperature caused in the oil film makes glueing more dangerous.