[Rigs for sale]Characteristics of the rig in the running - in period
Characteristics of the rig in the running - in period
I. features of run-in period:
There is a deviation between the geometric shape and matching size of the newly processed and assembled parts of the Water Well Drilling Rigs. In the early stage of use, the parts that were previously fastened are easy to become loose due to the impact, vibration and other alternating loads, as well as the influence of heat, deformation and other factors, as well as the reasons such as excessive wear.
2. Fast wear rate
Due to the new machine parts processing, assembly and adjustment and other factors, the friction surface rough, surface contact area is small, the surface pressure is uneven. During the operation of the machine, the concave and convex parts of the parts surface are interposed with each other to rub, and the metal debris that comes down is used as abrasive to continue to participate in the friction, which accelerates the wear of the parts' matching surface. Therefore, the running-in period is easy to cause parts (especially the surface) wear, wear speed. At this time, if overload work, it may lead to damage parts, early failure.
3. Leakage occurs
As a result of loose parts, vibration and the impact of heat machine, machine sealing surface and pipe joints, there will be leakage phenomenon; Part of the casting, processing and other defects, in the assembly debugging is difficult to find, but due to the vibration, impact effect in the process of operation, this defect is exposed, the performance is leakage (leakage) oil (water). Therefore, the run-in period is prone to leakage.
4. Many operational errors
Due to the lack of understanding of the structure and performance of the machine (especially the new operator), it is easy to cause faults due to operational errors, or even mechanical accidents.
5. Poor lubrication
Since the fit clearance of newly assembled parts is small, and it is difficult to ensure the uniformity of fit clearance due to assembly and other reasons, lubricating oil (grease) is not easy to form a uniform oil film on the friction surface to prevent wear. Thus reduces the lubrication efficiency, causes the early abnormal wear. In severe cases, the friction surface with precise fit will scratch or bite, leading to the occurrence of fault.
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