Plasma cladding process for crust breaking hammer

Abstract

The invention discloses a plasma cladding process for a crust breaking hammer. The plasma cladding process comprises the steps that one end of a metal base body which is machined and formed is fixed on a rotary disc of a surfacing welding machine; prepared alloy powder is baked at the temperature of 150 DEG C for 1-2 hours; and the baked alloy powder is placed in a container, the program of the surfacing welding machine is set according to requirements, a plasma torch protective argon source and a power supply of the surfacing welding machine are started, the alloy powder is clad on the metalbase body through a continuous jetting method, through high-energy density automatic welding, the alloy powder and the surface of the base body are molten and then rapidly solidified, so that a surface coating which is in metallurgical bonding with the surface of the base material is formed on the surface of the base material, and the thickness of the coating is 2-5 mm. The plasma cladding processfor the crust breaking hammer has the advantages that the surfacing welding layer is good in performance, high in bonding strength, and good in compactness, the melting depth of a workpiece is controllable, the dilution rate of the surfacing welding layer is low, the formed shape of the surfacing welding layer is regular, the pollution is small, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of shell hammer manufacturing, in particular to a shell hammer plasma cladding process. Background technique [0002] In modern industrial production, due to the harsh environment in which the relevant mechanical parts operate, the surface is required to have good wear resistance, corrosion resistance, high temperature resistance and high hardness to meet the needs of special functions. Metal matrix composites have the advantages of flexible design, easy molding, light weight, and corrosion resistance, which can greatly improve the properties of the substrate surface such as wear resistance, corrosion resistance, high temperature resistance, heat conduction, and heat insulation. [0003] With the upgrading of industrial technology, the demand for cladding products on the surface of the substrate is increasing. Whether it is the preparation of metal matrix composites and the cladding process, research is acti...

AI Technical Summary

Problems solved by technology

[0004] At present, most shelling hammers used in electrolytic aluminum tanks are made of low-carbon steel, high-manganese steel or alloy steel, which have poor high temperature resistance and corrosion resistance, and generally have a short service life (2-6 months). The loss will cause a large amount of iron and other elements to enter the molten aluminum, seriously affecting the quality of the molten aluminum