混凝土攪拌車滑動軸承損壞怎么辦？實際上該攪拌車滑動軸承的早期損壞比軸承燒壞更常見，因此防止滑動軸承的早期損壞非常重要。

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 burning out of the bearing, so it is very important to prevent the early damage of the sliding bearing.

在氣缸壓力沖擊載荷的反復(fù)作用下，滑動軸承表層發(fā)生塑性變形和冷加工硬化，部分喪失變形能力，逐漸形成條紋并膨脹，然后隨著磨屑的脫落，在受力表層形成空洞。

Under the repeated action of cylinder pressure impact load, plastic deformation and cold work hardening will occur on the surface of sliding bearing, which will partially lose the deformation ability, gradually form stripes and expand, and then form cavities on the stressed surface with the falling off of wear debris.

一般情況下，軸瓦發(fā)生點蝕時，點蝕出現(xiàn)，然后點蝕逐漸擴(kuò)大，導(dǎo)致合金層的界面開裂。裂紋沿界面平行方向擴(kuò)展，直剝離。

In general, when pitting occurs on the bearing bush, the pitting first appears, and then gradually expands, resulting in interface cracking of the alloy layer. The crack propagates parallel to the interface until it peels off.

滑動軸承空蝕的主要原因是油槽、油孔等結(jié)構(gòu)元件截面的突變導(dǎo)致油流的強烈無序，在無序的真空區(qū)形成氣泡，然后由于壓力升高導(dǎo)致氣泡坍塌而發(fā)生空蝕。

The main reason for the cavitation of sliding bearings is that the abrupt change of the cross-section of structural elements such as oil grooves and oil holes leads to the strong disorder of oil flow, forming bubbles in the disordered vacuum area, and then collapsing bubbles due to the pressure rise to cause cavitation erosion.

氣蝕通常發(fā)生在軸承的高負(fù)荷區(qū)域，如曲軸主軸承的下軸瓦。軸承外圈是軸承在座孔內(nèi)的相對轉(zhuǎn)動。軸承通過外圈后，不僅影響軸承的散熱，容易造成軸承內(nèi)表面的合金腐蝕，而且會損壞軸承的背面，嚴(yán)重時會燒壞軸承。主要原因是軸承太短，榫頭損壞，加工或安裝不符合規(guī)范。

Cavitation usually occurs in the high load area of the bearing, such as the lower bearing bush of the crankshaft main bearing. The bearing outer ring is the relative rotation of the bearing in the seat hole. After the bearing passes through the outer ring, it will not only affect the heat dissipation of the bearing, but also easily cause alloy corrosion on the inner surface of the bearing, and damage the back surface of the bearing. In serious cases, it will burn the bearing. The main reasons are that the bearing is too short, the tenon is damaged, and the processing or installation does not meet the specifications.

滑動軸承的正確維護(hù)是減少軸承早期損壞的有效途徑，也是延長軸承使用壽命的可靠保證。因此，在發(fā)動機(jī)的日常保養(yǎng)和維修中，一定要注意合金表面、軸承背面、端部和棱角的外觀形狀。

The correct maintenance of sliding bearings is an effective way to reduce the early damage of bearings and also a reliable guarantee to prolong the service life of bearings. Therefore, in the daily maintenance and repair of the engine, attention must be paid to the appearance and shape of the alloy surface, bearing back surface, end and corner.

如果有異常跡象或磨損過半，一定要認(rèn)真查找原因，采取相應(yīng)措施，改善軸承的工作條件，注意防止滑動軸承的早期損壞。更多事項了解，關(guān)注我們網(wǎng)站http://www.qirongguanjia.cn吧！

If there are abnormal signs or half wear, it is necessary to carefully find out the cause, take corresponding measures, improve the working conditions of the bearing, and pay attention to preventing early damage of the sliding bearing. For more information, follow our website http://www.qirongguanjia.cn Come on!