Build up welding layer of continuous casting roller

Abstract

The invention discloses a build up welding layer of a continuous casting roller. The build up welding layer is characterized in that the build up welding layer comprises a stacking bottom layer and a surface wire layer which are stacked on the continuous casting roller; the stacking bottom layer comprises 0.04-0.08 part of C, 1.0-1.5 parts of Mn, 0.4-0.8 part of Si, 16-22 parts of Cr and the balance Fe; and the surface wire layer comprises 0.04-0.08 part of C, 1.3-1.8 parts of Mn, 0.4-0.8 part of Si, 10-15 parts of Cr, 3.5-5 parts of Ni4, 0.5-1 part of Mo and the balance Fe. The build up welding layer of the bottom face of the continuous casting roller is made of ferritic stainless steel alloy, the friction coefficient of the build up welding layer is small, good impact resistance is achieved, multi-layer build up welding can be achieved, no crack is generated, machining is easy, and the build up welding layer is mainly used for repairing of carbon steel pieces or transition layers of other build up materials. The surface wire layer has excellent fatigue resisting performance and good corrosion resisting performance and wear resisting performance, and the build up welding layer simulates 1,000 times of quick heating and cooling circulating tests of the continuous casting roller, can find fatigue cracks and is mainly used for various kinds of steel rollers, hot-rolled work rollers, continuous casting rollers, crane rollers and blast-furnace top bell sealing faces.

Description

technical field [0001] The invention relates to a surfacing welding layer of a continuous casting roll, in particular to a surfacing welding layer of a continuous casting roll which is not easy to crack and has good surface performance. Background technique [0002] Surfacing welding, as an economical and rapid process method for surface modification of materials, is more and more widely used in the manufacture and repair of parts in various industrial sectors. In order to play the role of the surfacing layer most effectively, it is hoped that the surfacing welding method adopted has a small dilution of the base metal, a high deposition speed and excellent performance of the surfacing layer, that is, high-quality, high-efficiency, low-dilution rate surfacing welding technology. In the process of surfacing the workpiece to repair the surface defects and wear of the metal workpiece, cracks will appear in the multi-layer surfacing welding during the polishing process after the...

AI Technical Summary

Problems solved by technology

In the process of surfacing the workpiece to repair the surface defects and wear of the metal workpiece, cracks will appear in the multi-layer surfacing welding during the polishing process after the implementation of multi-layer surfacing welding, and the wear resistance and anti-corrosion performance of the outermost welding layer The effect is not very ideal