OVERLAY WELDING



Overlay Welding for Valve Parts

Weld overlay is to increase the size of the weldment by welding, restore the weldment, or deposit metal with select properties on the surface. Welding uses a welding heat source to form a surface metallurgy bond between the surface of the substrate and the material.

Weld overlay purpose is not to connect parts, but to deposit one or more layers of materials with the desired properties by welding. It can obtain the required cladding layer with unique features such as wear resistance, heat resistance, and corrosion resistance.

Metal materials for surfacing are divided into five categories: one iron-based surfacing metal, two nickel-based alloys, three cobalt-based alloys, four copper-based alloys, and five carbide alloys.

matson valve overlay welding

Why use overlaying

Overlay welding is a welding process in which a material with specific properties is covered on the welding surface of a workpiece; the purpose is to restore the hardness of the outer surface of the workpiece or increase the external size of the workpiece.

After the welding layer of the workpiece material is worn, re-welding can improve the service life of the entire part.

Save manufacturing costs and maintenance costs, reduce the time for repair and replacement of the whole section, reduce the number of production shutdowns and production loss, and reduce the overall cost of production.

Surfacing welding can make better use of materials to obtain excellent comprehensive performance, which is also of great significance for improving product design. The content of surfacing welding mainly includes two aspects.

matson valve overlay welding

Overlaying service

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Overlaying Welding
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Overlaying Welding

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