What to do if the sliding bearing of the concrete mixer is damaged? In fact, the early damage of the sliding bearing of the mixer is more common than the bearing burning, so it is very important to prevent the early damage of the sliding bearing.

在气缸压力冲击载荷的反复作用下，滑动轴承表层发生塑性变形和冷加工硬化，部分丧失变形能力，逐渐形成条纹并膨胀，然后随着磨屑的脱落，在受力表层形成空洞。

Under the repeated action of the cylinder pressure impact load, the surface of the sliding bearing undergoes plastic deformation and cold work hardening, partially losing the deformation ability, gradually forming stripes and expanding, and then with the falling off of the wear debris, a cavity is formed on the stressed surface.

一般情况下，轴瓦发生点蚀时，点蚀出现，然后点蚀逐渐扩大，导致合金层的界面开裂。裂纹沿界面平行方向扩展，直剥离。

In general, when pitting occurs on the bearing bush, the pitting first occurs, and then gradually expands, leading to the interface cracking of the alloy layer. The crack propagates parallel to the interface until peeling.

滑动轴承空蚀的主要原因是油槽、油孔等结构元件截面的突变导致油流的强烈无序，在无序的真空区形成气泡，然后由于压力升高导致气泡坍塌而发生空蚀。

The main reason for cavitation of sliding bearing is that the sudden change of the cross section of structural elements such as oil groove and oil hole leads to the strong disorder of oil flow, forming bubbles in the disordered vacuum area, and then cavitation occurs due to the collapse of bubbles due to the pressure rise.

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