Large support roller overlaying workstation and operation method thereof

Abstract

The invention relates to a large support roller overlaying workstation and an operation method thereof. The large support roller overlaying workstation comprises a roller support device, a roller driving device, an online heating system, a welding system and a flux recovery system; a support roller is supported and positioned by the roller support device, and can be driven by the roller driving device to rotate; a door type heating cover of the online heating system covers the support roller to form a closed cover body; an insulation layer and an induction electric heating device are arranged on the inner wall of the cover body; a welding gun can vertically move to extend into the door type heating cover body; and the flux recovery system is arranged at the bottom of the door type heating cover. The support roller is heated and insulated in the closed cover body; multiple sets of welding mechanisms can synchronously perform welding; a flux can be automatically recovered; the continuous process of the large support roller as online preheating, welding, insulation and tempering can be realized; and the large support roller overlaying workstation is convenient for operation, high in automation degree and precise in temperature control, facilitates improvement of the overlaying quality of the support roller, improves the repair efficiency, and fills the blank of the technology.

Description

technical field [0001] The invention relates to the technical field of overlay welding repair for large support rolls, in particular to a large support roll overlay welding workstation and an operating method thereof. Background technique [0002] With the development of modern rolling mills in the direction of large-scale, high-speed, and automation, the requirements for backup rolls are also getting higher and higher. In actual production, the back-up roll is one of the important parts on each production line, and every large rolling mill consumes a large amount of such parts every year. In order to reduce the production cost and prolong the service life of the support roll, the support roll is usually repaired by surfacing welding on the roll surface so that it can be reused. [0003] As far as the existing technology is concerned, the surfacing repair work of large support rollers is relatively difficult, and the main difficulty lies in the online heating of the support...

AI Technical Summary

Problems solved by technology

[0003] As far as the existing technology is concerned, the surfacing repair work of large support rollers is relatively difficult, and the main difficulty lies in the online heating of the support rollers. Since it is difficult to achieve closed heating, the heating method exposed to the air makes it dissipate heat quickly. It is difficult to reach the welding temperature. Welding below the standard temperature will increase the stress of the supporting roller. During the welding process, the supporting roller is prone to cracks and the welding success rate is very low.

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