How do mechanical maintenance run-in period
时间：2011/11/23 9:20:38
Construction machinery factory, the general requirement of 60 hours of run-in period (some called to go in period), which is based on engineering machinery production plant with initial characteristics and skills required. Run-in period is to ensure the normal operation of construction machinery, down the failure rate, extending the life of the main part. But, some users due to the lack of construction machinery or due to tight schedule using common sense, or would like to return as soon as possible, and neglect the new machine run-in period of special skill request. Some users even think that, anyway, manufacturers have warranty period, the machine is broken by the manufacturer is responsible for maintenance, so the machine a long time in the run-in period on overload, leading to early failure of the machine frequently, and this not only affects the normal application of the machine, shorten the life of the machine, but also because of machine damage, affecting the progress of the project. Therefore, the construction machinery and home for the use of run-in period should be sufficient cause high regard.
A run-in period features:
1 wear faster?
Since the new machine parts processing, assembly and transfers and other factors, the friction surface roughness, surface contact area with the smaller, uneven surface of the pressure state. Machine running the process, the part between the surface of the convex part of the chimeric friction, wear down to metal debris, and as an abrasive, friction continued participation, but also accelerate the wear of the parts with the surface. Therefore, the run-in period, easily causing parts (special is in line with the surface) of the wear, wear faster. At this time, if the overload operation may result in the destruction of components, the occurrence of early failure.
(2) poor lubrication?
As the new assembly of parts with the smaller gap, and because the assembly and other reasons, it is difficult to ensure uniformity with the gap, oil (fat) is not easy even in the friction surface of the film, to prohibit the wear and tear. Lubricating performance to drop, resulting in abnormal wear of the early parts. Precise cause serious friction with the phenomenon of surface scratch or bite, leading to failure.
3 have loose
New processing and assembly of components, with the existence of geometric shape and size of the deviation, in the initial application, due to shock, vibration and other alternating loads, and heat, deformation and other factors, coupled with excessive wear and other reasons, easy to make Tighten loose parts would have occurred.
4 leakage occurred
Because of the loose parts, vibration and heat of the machine, the machine's sealing surface and pipe fittings, etc., will show leakage; part of the casting, machining and other shortcomings in the assembly of the invention when debugging is difficult, but because of the vibration of the job process , the impact effect, this shortcoming was exposed, expressed as leakage (infiltration) oil (water). Therefore, a period of adjustment easily emerge leakage.
5 more operational errors
Mechanical run-in period run-in period to maintain the use of construction machinery and maintenance of construction machinery run-in period and maintenance of construction machinery using the use and maintenance of run-in period
Because of the machine structure, the performance is not enough to understand (special is the new operator), susceptible to failures caused by operational errors, and even lead to mechanical accidents.
Second, the run-in period of application and protection
1 is a special vehicle as construction machinery, manufacturers operating staff should receive training in leadership, the machine's structure, performance sufficient to understand, and get the operation and maintenance experience will be operating the machine. Manufacturers supply products to use to protect the book explained, is the operator operating the equipment necessary materials before the machine in operation, must first clear view to use to protect the book, according to the book to clarify the request to operate, enjoying.
2 Note that run-in period of the workload, the workload of the general run-in period should not exceed 80% of the rated working load, and deploy the right to work, to prevent the machine a long time continuous operation caused by overheating of the produce.
3 Note that often look at the instigation of the instrument, showing abnormal, parking should be eliminated promptly, in the cause is not found, the fault does not eliminate, should end operations.
4 Note that under constant review lubricating oil, hydraulic oil, coolant, brake fluid and fuel oil (water) position and character, and pay attention to the tightness of the whole review. Check the lack of too much water in the invention, should analyze the reasons. At the same time, enhance the lubrication points should be lubricated, it is recommended run-in period, the class should be on filling grease lubrication points (except for special requests).
5 adhere to the machine clean, timely adjust, tighten loose parts, to prevent loosening and wear of parts or lead to increased loss of parts.
6 run-in period to stop, should be forced home for the machine, do the review and adjust the work, while paying attention to the fluid exchange.
In short, the construction machinery used in the run-in period, maintenance requirements, can be satisfied to return to: enhance training, reduce the load, pay attention to check and strengthen lubrication. As long as high regard as required to implement run-in period for the maintenance of construction machinery and maintenance, will reduce the incidence of early failure, extending service life, operational effectiveness and progress, so the machine to bring you more revenue. |
