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Flux-cored wire for surfacing repair

A technology of flux-cored welding wire and welding wire, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., which can solve the problems of no protective gas, easy oxidation of molten pool, and poor crack resistance, so as to prevent large-area Peeling, good fixation, increase the effect of remanence

Active Publication Date: 2015-04-29
SHANGHAI SHIWEI WELDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, common submerged arc welding welding materials have either low hardness or high hardness and poor crack resistance.
In addition, the traditional submerged arc welding does not have a shielding gas, and the molten pool is easily oxidized

Method used

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  • Flux-cored wire for surfacing repair
  • Flux-cored wire for surfacing repair
  • Flux-cored wire for surfacing repair

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Embodiment Construction

[0046] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific diagrams.

[0047]A flux-cored welding wire for surfacing and repairing, including a flux-cored wire body, the flux-cored wire body includes a metal layer, and a flux core is wrapped in the metal layer, and the flux core includes the following elements in weight percentage, C: 0.1%-5 %﹑Mn: 0.8%-3%, Si: 0.5%-2%, Cr: 3%-25%, Mo: 1%-4%, W: 1%-10%, and the balance is Fe. The present invention adds Mo to the proportion of the traditional flux core, thereby realizing the performance of high temperature resistance and wear resistance of the welding material, ensuring the strength of the welding seam, and helping to prevent large-area peeling off of the welding layer. Mo can improve hardenability and heat strength in steel. Prevent temper brittleness, increase remanenc...

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Abstract

The invention relates to the technical field of welding, and discloses a flux-cored wire for surfacing repair. The flux-cored wire comprises a flux-cored wire main body, wherein the flux-cored wire main body comprises a metal layer wrapping a flux core; the flux core comprises the following components in percentage by weight: 0.1 to 5 percent of C, 0.8 to 3 percent of Mn, 0.5 to 2 percent of Si, 3 to 25 percent of Cr, 1 to 4 percent of Mo, 1 to 10 percent of W and the balance of Fe. According to the flux-cored wire, Mo is added into a conventional flux core formula, so that the performance of high temperature resistance and abrasion resistance of a welding material is achieved, the strength of a welding seam is ensured, and a welding layer is favorably prevented from being stripped in large scale; by Mo in steel, the hardenability and the thermal strength can be improved, the temper brittleness is prevented, and the residual magnetism and the coercive force are improved; silicon does not form carbide, so that a powerful function of promoting the graphitization of carbon is realized.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a flux-cored welding wire. Background technique [0002] At present, with the rapid development of the economy and the continuous improvement of the technical level, the industry is gradually transforming from labor-intensive to technology-intensive, and the level of mechanization and automation continues to increase. The wear and tear of mechanical equipment components has caused huge economic losses. Among all kinds of wear types, abrasive wear accounts for a large proportion, and abrasive wear basically exists in all kinds of mechanical parts, including mining machinery, engineering machinery, metallurgical machinery, casting machinery and forging machinery. The wear and tear of various machinery reduces production efficiency and shortens the service life. [0003] At present, common submerged arc welding welding materials have either low hardness or high hardness and poor c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/16
CPCB23K35/0266B23K35/3086B23K35/3093
Inventor 施桂兴张明洋曹允池
Owner SHANGHAI SHIWEI WELDING IND
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