High binding force nano-amorphous sprayed welding wire

Abstract

The invention relates to a nano-amorphous sprayed welding wire with high binding force, which comprises a strip matrix located on the surface, and filling powder is filled in the strip matrix; the feature is that there is a central welding wire in the center of the filling powder. The strip substrate is an iron-based strip or a nickel-based strip. The iron-based strip is made of low carbon steel or austenitic ferritic stainless steel, and the nickel-based strip is made of pure nickel or nickel-chromium. The filling powder is a mixture of ferroboron, ferrotungsten and / or tungsten powder, ferroniobium and / or niobium powder. The central welding wire is aluminum welding wire, aluminum magnesium welding wire or aluminum silicon welding wire. The welding wire of the present invention has twice the intensity of the coating formed by spraying the amorphous coating formed by spraying the traditional welding wire; the welding wire of the present invention has added a central welding wire in the center of the amorphous powder, and the central welding wire It has a low melting point and is easy to melt, thereby reducing the melting time of the amorphous powder and the matrix strip, prolonging the melting state of Ni3Al and Fe3Al, and obtaining a nano-amorphous coating with high bonding force.

Description

technical field [0001] The invention relates to a welding wire, in particular to a nano-amorphous sprayed welding wire with high binding force, which belongs to the field of welding. Background technique [0002] The composition of traditional amorphous sprayed welding wire is: [0003] 1. The middle is a powder composed of Fe, Cr, B, Nb, W, Mo, Ni and C. The powder is sprayed on the surface of the workpiece after being melted at high temperature during welding, and forms an amorphous coating on the surface of the workpiece after rapid cooling; [0004] 2. The outer layer is the matrix strip, generally the matrix strip is made of low carbon steel, austenitic ferritic stainless steel, pure nickel or nickel chromium. [0005] The traditional manufacturing method of amorphous spraying welding wire is to use pre-mixed metal powder, that is, the mixed powder of Fe, Cr, B, Nb, W, Mo, Ni and C to add to different matrix strips. The strength and stability of the bonding force and ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problem of low bonding force and weak stability between the amorphous coating and the workpiece, a layer of nickel-aluminum coating with high bonding force is generally pre-sprayed on the surface of the workpiece as the material for bonding the bottom layer, and then sprayed with amorphous spraying welding wire Amorphous coating to achieve anti-corrosion and anti-wear functions, but the cost of this process is very high

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