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Self-shielded flux-cored wire formula and process

A technology of flux-cored welding wire and self-protection, which is applied in the direction of welding medium, manufacturing tools, welding equipment, etc., can solve the problems of poor overall structural toughness and drawing performance, easy oxidation of the internal flux core, and lack of isolation protection, etc. Promote and use, improve the antioxidant capacity, improve the effect of drug core compactness

Inactive Publication Date: 2021-02-26
ZHANGJIAGANG HENGCHANG WELDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing protective flux-cored welding wire is directly infused with the flux core material in the preparation, lacks isolation protection, the toughness and drawing performance of the overall structure are not good, it is easy to be damaged and leaked, and the internal flux core is easily oxidized after being placed for a long time, which is not convenient for welding steady progress

Method used

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  • Self-shielded flux-cored wire formula and process
  • Self-shielded flux-cored wire formula and process
  • Self-shielded flux-cored wire formula and process

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Embodiment 1

[0038] The present invention provides such Figure 1-2 A formula of self-shielding flux-cored welding wire shown, including a flux-cored welding wire body 1, said flux-cored welding wire body 1 is made of an aluminum strip 2, a flux core layer 3, a wrapping layer 4, an isolation layer 5 and an outer coiled steel layer 6 The aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer steel coil layer 6 are coaxially distributed, and the aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer coil The steel layer 6 is wrapped and arranged sequentially from the inside to the outside;

[0039] The main materials used in the drug core layer 3 include by weight: 10 parts of rutile powder, 8 parts of anorthite powder, 5 parts of dolomite powder, 6 parts of aluminum-magnesium alloy powder, 3 parts of fluoride, 3 parts of molybdenum powder, 1 part of zirconium powder, 4 parts of silicon nitride, 5 parts ...

Embodiment 2

[0059] The present invention provides such Figure 1-2 A formula of self-shielding flux-cored welding wire shown, including a flux-cored welding wire body 1, said flux-cored welding wire body 1 is made of an aluminum strip 2, a flux core layer 3, a wrapping layer 4, an isolation layer 5 and an outer coiled steel layer 6 The aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer steel coil layer 6 are coaxially distributed, and the aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer coil The steel layer 6 is wrapped and arranged sequentially from the inside to the outside;

[0060] The main materials used in the drug core layer 3 include by weight: 15 parts of rutile powder, 12 parts of anorthite powder, 6 parts of dolomite powder, 8 parts of aluminum-magnesium alloy powder, 3.5 parts of fluoride, 3.5 parts of molybdenum powder, 1.5 parts of zirconium powder, 5 parts of silicon nitride, ...

Embodiment 3

[0080] The present invention provides such Figure 1-2 A formula of self-shielding flux-cored welding wire shown, including a flux-cored welding wire body 1, said flux-cored welding wire body 1 is made of an aluminum strip 2, a flux core layer 3, a wrapping layer 4, an isolation layer 5 and an outer coiled steel layer 6 The aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer steel coil layer 6 are coaxially distributed, and the aluminum strip 2, the drug core layer 3, the wrapping layer 4, the isolation layer 5 and the outer coil The steel layer 6 is wrapped and arranged sequentially from the inside to the outside;

[0081] The main materials used in the drug core layer 3 include by weight: 20 parts of rutile powder, 15 parts of anorthite powder, 7 parts of dolomite powder, 10 parts of aluminum-magnesium alloy powder, 4 parts of fluoride, 4 parts of molybdenum powder, 2 parts of zirconium powder, 7 parts of silicon nitride, 8 par...

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Abstract

The invention discloses a self-shielded flux-cored wire formula and a process. The self-shielded flux-cored wire formula comprises a flux-cored wire body, the flux-cored wire body is made of an aluminum strip, a flux-cored layer, a wrapping layer, an isolation layer and an outer coiled steel layer, wherein the aluminum strip, the flux-cored layer, the wrapping layer, the isolation layer and the outer coiled steel layer are coaxially distributed, and the aluminum strip, the flux-cored layer, the wrapping layer, the isolating layer and the outer coiled steel layer are sequentially arranged in awrapping manner from inside to outside. The overall welding performance of a flux-cored wire is improved through the formula, it is guaranteed that the welding process performance is optimal, the flux-cored wire body is of a nested structure of the aluminum strip, the flux-cored layer, the wrapping layer, the isolation layer and the outer coiled steel layer, the flux-cored compactness of the flux-cored wire can be improved during production in cooperation with the machining process of the self-shielded flux-cored wire, uniform distribution of flux cores is guaranteed, cold-rolled coil steel rolls into a U-shaped groove and is subjected to isothermal quenching treatment, the ductility and toughness of an external coiled steel layer are improved, the tensile property and yield strength of the flux-cored wire body are improved through cooperation with the aluminum strip, and damage is avoided.

Description

technical field [0001] The invention relates to the technical field of welding wire preparation, in particular to a self-protecting flux-cored welding wire formula and process. Background technique [0002] Self-shielded flux-cored wire represents the development direction of welding materials in the world today. Since the self-shielding flux cored wire can achieve the dual purpose of on-site welding and welding automation production, it is widely used as a new type of welding material that is efficient and suitable for outdoor operations at home and abroad in the field of welding steel materials of different strength levels in different positions. At present, it has been used in shipbuilding, chemical industry, metallurgical construction and machinery manufacturing industry sectors, as well as drilling platforms, oil pipelines, container welding fields, etc. [0003] The difference between flux cored wire and solid wire is that the former has a core inside the tube. The r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/18B23K35/20B23K35/368B23K35/40
CPCB23K35/0266B23K35/3608B23K35/368B23K35/406
Inventor 罗怡
Owner ZHANGJIAGANG HENGCHANG WELDING MATERIALS
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