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Boride hardfacing flux-cored wire and preparation method thereof

A technology of boride and flux, which is applied in the field of boride wear-resistant surfacing flux-cored welding wire and its preparation, can solve the problems of poor weldability, poor corrosion resistance, and low bonding strength, and achieve reduced preparation costs and corrosion resistance. Good, solderability-enhancing effect

Active Publication Date: 2015-01-21
WUHAN CHUNHE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to material limitations, this type of iron-based surfacing wear-resistant welding wire has some unavoidable defects: low hardness, limited wear resistance, poor corrosion resistance and poor high temperature resistance, and it is difficult to meet severe wear, corrosion, high temperature and other harsh conditions. Requirements for the use of parts under environmental conditions
However, there are insurmountable barriers of density and expansion coefficient in the combination of carbide alloy and steel, resulting in poor weldability, low bonding strength between base metal and cladding layer, easy cracks, peeling and other defects. The high cost greatly limits the wide application of this kind of surfacing welding wear-resistant welding wire

Method used

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  • Boride hardfacing flux-cored wire and preparation method thereof
  • Boride hardfacing flux-cored wire and preparation method thereof

Examples

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Embodiment 1

[0019] A boride wear-resistant surfacing flux-cored welding wire and a preparation method thereof. The preparation method described in this embodiment is as follows: firstly dry the flux core, mix it evenly; then put it into the sheath, and draw it to obtain the boride wear-resistant surfacing flux-cored welding wire.

[0020] The outer skin described in this embodiment is common low carbon steel.

[0021] The composition and content of the drug core described in this embodiment are: B is 1~4wt%, Mo is 25~40wt%, Ni is 9~12wt%, Cr is 15~20wt%, C is 0.2~2wt%, and the balance For Fe.

Embodiment 2

[0023] A boride wear-resistant surfacing flux-cored welding wire and a preparation method thereof. The preparation method described in this embodiment is as follows: firstly dry the flux core, mix it evenly; then put it into the sheath, and draw it to obtain the boride wear-resistant surfacing flux-cored welding wire.

[0024] The outer skin described in this embodiment is stainless steel.

[0025] The composition and content of the drug core described in this embodiment are: B is 3~6wt%, Mo is 35~50wt%, Ni is 7~9wt%, Cr is 10~16wt%, C is 0.2~2wt%, and the balance For Fe.

Embodiment 3

[0027] A boride wear-resistant surfacing flux-cored welding wire and a preparation method thereof. The preparation method described in this embodiment is as follows: firstly dry the flux core, mix it evenly; then put it into the sheath, and draw it to obtain the boride wear-resistant surfacing flux-cored welding wire.

[0028] The outer skin described in this embodiment is common low carbon steel.

[0029] The composition and content of the drug core described in this embodiment are: B is 5~8wt%, Mo is 45~60wt%, Ni is 5~8wt%, Cr is 5~10wt%, C is 0.2~2wt%, and the balance For Fe.

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Abstract

The invention relates to a boride hardfacing flux-cored wire and a preparation method thereof. According to the technical scheme, a flux core firstly is dried and evenly mixed and then is placed in skin and pulled to obtain the boride hardfacing flux-cored wire. The flux core comprises 1-10 wt% of B, 25-75wt% of Mo, 1-12 wt% of Ni, 1-20 wt% of Cr, 0.2-2 wt% of C, and the balance Fe. The skin is common soft steel or stainless steel. The boride hardfacing flux-cored wire is low in cost, and after a parent metal is subjected to overlaying processing through the prepared boride hardfacing flux-cored wire, a cladding layer on the surface of the parent metal can be good in corrosion resistance, excellent in wear resistance, and high in hardness.

Description

technical field [0001] The invention belongs to the field of surfacing welding flux cored wire. Specifically, it relates to a boride wear-resistant surfacing flux-cored welding wire and a preparation method thereof. Background technique [0002] The preparation process of ternary boride-based cermets is simple, easy to operate, and has excellent wear resistance, corrosion resistance and high temperature resistance. Compound-based cermets have great practical value. Among many cemented carbides, boride-based cemented carbides have high hardness, high melting point and good electrical conductivity. In addition, the emergence of reactive vacuum liquid phase sintering method makes cermets more dense, and their hardness and bending strength are greatly improved. improve. Therefore, ternary boride-based cermets have been successfully used in wear-resistant working environments such as injection molding molds, tool making, and copper hot extrusion molds due to their good perform...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/32B23K35/40
Inventor 潘应君张恒陆旭锋
Owner WUHAN CHUNHE TECH CO LTD
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