Method for processing flexible metal-plastic thrust bearing bush of main transmission box for milling equipment with laser

Abstract

The invention relates to a method for processing a flexible metal-plastic thrust bearing bush of a main transmission box for milling equipment with laser, belonging to the metallurgical field. The graphite is used as coating, and the impact wave induced by strong laser is used to impact the surface of the flexible metal-plastic thrust bearing bush with laser so as to improve the density of a plastic layer on the surface, form a small pit of a certain depth on the surface of the plastic layer and increase the adhesion and the oil storage performance of a lubricating oil film on the surface. When the supply of the high-pressure lubricating oil interrupts, the lubricating oil stored in the small pit on the surface of the plastic layer can maintain the existence of the lubricating oil film, and the graphite particles embedded in the plastic layer can fulfill the lubricating function after the lubricating oil film disappears and before the surface of the flexible metal-plastic thrust bearing bush is impacted with laser so as to shorten the time of real unlubricated friction and reduce the wear of the plastic layer due to unlubricated friction.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a laser treatment method for the main thrust bearing bush of a transmission box of a slag recycling grinding equipment. Background technique [0002] Grinding equipment is the key equipment for blast furnace ironmaking and steelmaking slag recycling. The support method of its main drive shaft is traditionally supported by "babbitt alloy tile surface thrust tile + dynamic pressure lubricating oil film", which failed to form when it was first started. The dynamic pressure lubricating oil film is prone to dry friction and fluffing, burning out the bearing pad and paralyzing the system. The use of "elastic metal plastic thrust pad + high pressure jacking up static pressure lubricating oil film" support can effectively overcome this defect. However, during the operation, the high-pressure oil pump system failed, and a large amount of transfer film was formed on the surface of the elastic met...

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Problems solved by technology

However, during the operation, the high-pressure oil pump system fails, and a large amount of transfer film is formed on the surface of the elastic metal-plastic thrust pad due to dry friction, resulting in accelerated wear of the plastic layer on the surface of the bearing pad.

[0003] In metal surface treatment technology, laser shock strengthening is a new type of surface strengthening method, which uses laser-induced shock waves to plastically deform the surface of metal materials to generate a residual stress layer and improve the wear resistance and fatigue resistance of the metal surface. For the plastic on the surface of the elastic metal bearing bush, due to the inherent physical properties of the plastic itself, it is impossible to improve its wear resistance through impact

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