Laser cladding powder for preparing hard strengthened layer on surface of zinc pot roller shaft sleeve

Abstract

The invention relates to the field of laser cladding, in particular to a laser cladding powder material for preparing a hard strengthened layer on the surface of a zinc pot roller shaft sleeve, the powder material is mixed powder of iron-based powder and metal ceramic alloy powder, the iron-based powder accounts for 50-80% by mass, and the particle size of the iron-based powder is 10-80 microns; the metal ceramic alloy powder accounts for 20-50% by mass, and the particle size of the metal ceramic alloy powder is 10-80 microns; and the iron-based powder and the metal ceramic alloy powder are uniformly mixed. The iron-based powder comprises, by mass, 0.01%-0.2% of C, 15%-20% of Cr, 2%-6% of Cu, 0.1%-2% of Mn, 0.01%-0.5% of Nb, 2%-6% of Ni, 0.2%-1.5% of Si and the balance of Fe. The metal ceramic alloy powder comprises the following components in percentage by mass: 2-6% of C, 0-20% of Co and the balance of W. The powder material is suitable for laser cladding equipment including traditional laser cladding equipment and high-speed laser cladding equipment, and a high-hardness laser cladding layer can be prepared.

Description

technical field [0001] The invention relates to the field of laser cladding, in particular to a laser cladding powder material used for preparing a hard strengthening layer on the surface of a zinc pot roll sleeve. Background technique [0002] The zinc pot roll bushing is an important consumable part in the continuous hot-dip galvanizing production of strip steel. It is eroded by molten zinc and aluminum and sliding wear on the contact surface with the bushing, which leads to its failure and directly affects the quality of hot-dip galvanized products. and production efficiency. Therefore, the zinc pot roller sleeve needs to have the characteristics of corrosion resistance of zinc liquid, wear resistance and low friction coefficient. The shaft sleeves made of ordinary materials generally have disadvantages such as low hardness and easy wear and tear. If the shaft sleeves are directly made of wear-resistant and molten zinc corrosion-resistant materials, the cost is relativel...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of low hardness and easy wear of the zinc pot roller bushing at present, the present invention provides a laser cladding powder material for preparing a hard strengthening layer on the surface of the zinc pot roller bushing, which can reduce the production cost of the hard wear-resistant bushing. cost

Iron-based powder and metal-ceramic alloy powder are mixed evenly

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