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Submerged arc welding method of parallel double wire or single wire adding metal powder

A metal powder, submerged arc welding technology, applied in arc welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of uneven microstructure of the welding layer, large heat affected area, low welding productivity, etc.

Inactive Publication Date: 2007-01-31
江门市威霖贸易有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide an improved submerged arc welding method, especially a submerged arc welding method with parallel twin wires or single wires plus metal powder, to overcome the existing requirements of the existing common submerged arc welding method (abbreviation: SAW). Pre-groove thicker weldments and require multi-layer welding, as well as low welding productivity, high dilution rate of base metal, large heat-affected zone and insufficient uniform microstructure of weld layer

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  • Submerged arc welding method of parallel double wire or single wire adding metal powder
  • Submerged arc welding method of parallel double wire or single wire adding metal powder
  • Submerged arc welding method of parallel double wire or single wire adding metal powder

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Embodiment Construction

[0020] The invention relates to a submerged arc welding method for adding metal powder, which is divided into a submerged arc welding method for adding parallel twin wires and metal powder and a submerged arc welding method for adding metal powder to a single wire. It hardens the surface of one or two continuous casting rolls, and improves the process and equipment of ordinary submerged arc welding by filling metal powder surfacing, and uses and uses one or parallel two low Alloy steel welding wire, while welding, the metal powder is synchronously adhered to the welding wire. Since the metal powder is paired with the low-alloy steel welding wire, it is easy to obtain the weld layer of the desired alloy composition. Its main technical features are: using one or two parallel low-alloy steel welding wires and adding required alloying elements into the metal powder, wherein the metal powder accounts for the total alloy material including the low-alloy steel welding wire and metal ...

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Abstract

The present invention discloses an improved submerged arc welding process with double parallel wires or single wire plus metal powder. During welding, metal powder is adhered to the low alloy steel welding wire to obtain the welded layer with required alloy components. The said welding process can weld the root of welded part completely without crack and other welding fault produced and need of forming pit in advance. The welding process has high production efficiency, less mother material dilution, small heat affected area and homogeneous fine welding layer structure, and the welded part has wear resistance, corrosion resistance and long service life. The present invention may be used widely in large area surface built-up welding, especially the surface treatment of steel-making rollers.

Description

1. Technical field [0001] The invention relates to an improved submerged arc welding method, in particular to a submerged arc welding method filled with metal powder surfacing (abbreviation: SWP). 2. Background technology [0002] At present, there is no submerged arc welding method for adding metal powder. The working principle of the ordinary submerged arc welding method is usually: after the arc is generated between the end of the welding wire and the weldment, the radiant heat of the arc melts the flux around the end of the welding wire, and some of it is evaporated, and the flux vapor melts the surrounding of the arc. Agent—the slag is discharged to form a closed space, which isolates the arc from the outside air. The arc continues to burn in this space, and the welding wire continues to melt, and falls in drops, mixing with the molten liquid metal of the weldment to form a weld. molten pool. As the welding process progresses, the arc moves forward, and the weld pool ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K31/02
Inventor 邝益壮黄海珍
Owner 江门市威霖贸易有限公司
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