Laser cladding method for bearing position of cast iron roller and alloy powder for laser cladding

Abstract

The invention relates to a laser cladding method for a bearing position of a cast iron roller and alloy powder for laser cladding, wherein the alloy powder for the laser cladding comprises, by mass: Mn: 0.32%-0.43%, B: 1.2%-1.3%, Cr: 12.5%-16.5%, C: 0.03%-0.08%, Si: 0.62-0.8%, and the balance Fe. The alloy powder can be used for preparing a high-performance surface alloy layer on a low-cost cast iron roller bearing position base material, metal is endowed with good wear resistance, corrosion resistance and other properties and the service life of the repaired bearing position is greatly prolonged. By adopting the alloy powder for the laser cladding and combining a cladding alloy layer formed by the corresponding laser cladding method for the bearing position of the cast iron roller, good metallurgical bonding can be formed between the alloy powder and the surface of a cast iron roller bearing position base body after laser cladding processing, good toughness, strength and wear resistance are achieved, laser cladding repair of the cast iron roll bearing position after wear is effectively realized, and defects of cracks, air holes and the like are avoided, therefore, the working strength and the working life of the cast iron roller are improved, and remarkable economic benefits are achieved.

Description

technical field [0001] The invention relates to the field of surface engineering, in particular to a laser cladding method for cast iron roll bearing positions and an alloy powder for laser cladding. Background technique [0002] Laser cladding is also called laser remanufacturing technology and laser repair technology. Laser cladding technology is a new technology that uses high-energy laser and metal powder materials to strengthen the alloy of various parts. After treatment, its surface hardness and wear resistance can be significantly improved, the service life of parts can be extended, the operation rate can be improved, and production can be increased. purpose of reducing consumption. The working principle of laser cladding is to place the selected coating material on the surface of the substrate to be coated in different filling methods. After laser irradiation, it melts with a thin layer on the surface of the substrate at the same time, and after rapid solidification...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to solve the problem that the traditional method cannot effectively complete the repair of the cast iron roll bearing position after wear, and provide a laser cladding method for the cast iron roll bearing position and an alloy powder for laser cladding

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