1. Poor lubrication of mine loader. Because the time of equipment assembly is too short, the fit gap between mechanical parts is small, and due to some other factors during the assembly, the uniformity of fit gap can not be guaranteed. The lubricating oil is not easy to form a uniform oil film on the friction surface, so as to achieve the purpose of preventing wear. Low lubrication efficiency leads to abnormal wear of machine parts during early use. In severe cases, it will cause scratch or bite on the friction surface of precision fit, resulting in failure.

2、礦用裝載機(jī)快速磨損率。由于新機(jī)器零件的加工，組裝和調(diào)整等因素的影響，摩擦表面粗糙，配合表面的接觸面積小，表面壓力不均勻。在機(jī)器運(yùn)行過程中，零件表面上的凹凸部分相互配合并相互摩擦，被磨碎的金屬屑繼續(xù)作為磨料參與摩擦，從而加速了配合表面的磨損的零件。因此，在磨合期間，容易引起零件的磨損，磨損率快。此時(shí)，如果執(zhí)行過載，則可能導(dǎo)致零件損壞并導(dǎo)致早期故障。

2. Rapid wear rate of mine loader. Due to the influence of processing, assembly and adjustment of new machine parts, the friction surface is rough, the contact area of mating surface is small, and the surface pressure is uneven. During the operation of the machine, the concave and convex parts on the surface of the parts match and rub with each other, and the ground metal chips continue to participate in the friction as abrasives, thus accelerating the wear of the parts with the surface. Therefore, during the running in period, it is easy to cause wear of parts, and the wear rate is fast. At this time, if the execution is overloaded, it may lead to part damage and early failure.

3、礦用裝載機(jī)松動(dòng)。新加工和組裝零件的幾何形狀和匹配尺寸有偏差。在使用的早期階段，它們?nèi)菀资艿浇蛔冚d荷的影響，例如沖擊和振動(dòng)，以及熱量，變形和其他因素，以及過度的磨損。松開原來固定的零件。由于機(jī)器零件的松動(dòng)，振動(dòng)和機(jī)器熱量的影響而發(fā)生泄漏，機(jī)器的密封面和管接頭將泄漏出去。在組裝和調(diào)試過程中很難發(fā)現(xiàn)一些鑄造，加工和其他缺陷，但是由于操作過程，這種缺陷由于發(fā)動(dòng)機(jī)的振動(dòng)和沖擊而暴露，表現(xiàn)為機(jī)油（水）的泄漏（滲漏） 。因此，在礦用裝載機(jī)磨合期間容易發(fā)生泄漏。

3. The mine loader is loose. There is deviation in geometry and matching dimension of new machined and assembled parts. In the early stages of use, they are susceptible to alternating loads, such as shock and vibration, as well as heat, deformation and other factors, and excessive wear. Loosen the fixed part. Due to the looseness of machine parts, vibration and heat of the machine, the sealing surface and pipe joint of the machine will leak out. It is difficult to find some casting, machining and other defects in the process of assembly and debugging, but due to the operation process, this defect is exposed due to the vibration and impact of the engine, which is manifested as oil (water) leakage (leakage). Therefore, it is easy to leak during running in of mine loader.

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