Method of preparing anti-wearing and anti-corrosion coating on surface of ejection roller table of continuous casting machine

Abstract

The invention discloses a method of preparing an anti-wearing and anti-corrosion coating on the surface of an ejection roller table of a continuous casting machine. The method comprises the steps of: (1) pretreatment on the surface of the ejection roller table of the continuous casting machine: at room temperature, derusting and deoiling the surface of the ejection roller table of the continuous casting machine and cleaning the surface of the ejection roller table with alcohol; (2) design and preparation of alloy powder: selecting nickel-based alloy powder having good anti-wearing and anti-corrosion performance; and (3) preparation of a laser cladding layer: directly feeding alloy powder into a weld pool in a gravitational synchronic delivery manner with a DL-HL-T5000 type CO2 gas laser device to perform laser cladding to the surface of the ejection roller table of the continuous casting machine, powder thickness after cladding being 1.0-1.5 mm. The ejection roller table of the continuous casting machine is improved in anti-wearing and anti-corrosion performances by more than six times than a new product in the same type, while the cost is only about 50% of the new product.

Description

technical field [0001] The invention relates to a method for preparing a wear-resistant and corrosion-resistant coating on the surface of a metallurgical component, in particular to a method for preparing a wear-resistant and corrosion-resistant coating on the surface of a billet discharge roller table of a continuous casting machine by using laser cladding technology. Background technique [0002] During the service process of some large-scale key equipment parts in my country's metallurgy, petrochemical and national defense industries, most of them are only due to surface damage caused by mechanical wear or corrosion, which seriously affects the safe, stable and efficient operation of production and equipment, and even directly leads to The scrapping of parts and even the whole equipment not only causes serious economic losses, but also causes a huge waste of materials. Surface repair technology can not only improve economic benefits, but also save a lot of raw materials an...

AI Technical Summary

Problems solved by technology

[0006] However, there is still a lack of research on the laser cladding process for the billet roller table of the continuous casting machine