How to surfacing Middle Trough by PTA welding

The middle trough consisted of rolling groove the thickness 8mm and the middle plate thickness 6mm. The chain track position is overlayed the abrasion-resistant alloy to improve the abrasion performance and to increase the service term.

In the coal mining industry, here is a massive of discarded middle trough, it is considers as dumped one when it can not meet the demands of the volume of coal flow.

When middle trough is repaired by technology of PTA welding, a kind of reinforced wear resistance, it would take a project according to coal reserve, coal hardness, pattern ans so on, to make sure to reach and excess even the volume of coal flow.

The middle trough is mainly used for scraper conveyor and transfer machine in underground coal mine. The middle trough is the body of scraper conveyor, which composed of the middle plate and steel. The upper trough carries coal and the lower trough iused for the return of the scraper chain. Gernerally speaking, therre are fairly big error on the butt surface with the middle plate that increases the running resistance of the scraper to abnormal wear. So we have a key solution of PTA welding. It is easy to operate.