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The role of non-standard bearing lubrication and bearing steel smelting quality requirements
by：Waxing
2020-11-15
Non-standard bearing lubrication effect and the quality of bearing steel smelting requirements source: bearing | last updated: - 2020
09 -
11 non-standard bearing lubrication effect can be illustrated briefly as follows: a.
The contact between two rolling or sliding surface formed between a layer of oil film separates two surface, reduce the friction and wear of contact surface.
b。
Using oil lubrication, especially the circulating oil lubrication, oil mist lubrication and oil lubrication, the bearing lubricating oil take most of the internal friction heat, effective heat dissipation effect.
c。
Using grease lubrication, can prevent external dust and other foreign body into the non-standard bearings, sealing effect.
d。
Lubricant function to prevent corrosion of metal.
e.
Extend the fatigue life of non-standard bearings.
About 5% of chromium and contains a small amount of manganese and silicon hypereutectoid steel.
Chromium heat treatment can improve performance, increase the hardenability, uniformity, tempering stability, and can improve the anti-corrosion properties of steel and grinding performance.
65% when, after quenching can increase the retained austenite in the steel, reduce hardness and dimensional stability, increase the inhomogeneity of carbide lower impact toughness and fatigue strength of steel.
Therefore, high carbon chromium content in chromium non-standard bearing steel general control under,65%1.
Only in the strict control of non-standard bearing steel chemical composition, can satisfy the non-standard bearing performance were obtained through the heat treatment process and hardness.
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