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Small-sized self-shielded flux-cored wire suitable for all-position welding and application thereof

A technology of flux-cored welding wire and small size, applied in the field of small-size self-shielded flux-cored welding wire, can solve the problems of easy generation of pores, reduction of weld strength and toughness, crack generation, etc., to achieve improved porosity resistance, good operability, The effect of improving performance

Active Publication Date: 2019-03-29
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Compared with the self-shielded flux-cored wire with a diameter of 2.0mm, the wire diameter of the self-shielded flux-cored wire with a small size (0.8mm to 1.0mm) is small, and it is easy to generate pores, resulting in a decrease in the strength and toughness of the weld. will cause cracks

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  • Small-sized self-shielded flux-cored wire suitable for all-position welding and application thereof
  • Small-sized self-shielded flux-cored wire suitable for all-position welding and application thereof
  • Small-sized self-shielded flux-cored wire suitable for all-position welding and application thereof

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Embodiment Construction

[0031] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] The invention provides a small-sized self-shielding flux-cored welding wire suitable for all-position welding, which includes a carbon steel sheath and a flux core filled in the carbon steel sheath, and the flux core includes components and their proportions of the flux core. Percentage of total core mass: barium fluoride 25-30%, lithium fluoride 4-7%, rare earth fluoride 2-3%, magnesium powder 14-16%, aluminum powder 8-12%, graphite 1-2%, Metal manganese 4~7%, the balance is iron powder. The small-sized self-shielding flux-...

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Abstract

The invention belongs to the technical field of welding materials, and particularly relates to a small-sized self-shielded flux-cored wire suitable for all-position welding. The small-sized self-shielded flux-cored wire suitable for all-position welding comprises a carbon steel skin and a flux core filled in the carbon steel skin, wherein the flux core comprises the following the components according to the total mass percent of the flux core: 25-30% of barium fluoride, 4-7% of lithium fluoride, 2-3% of rare earth fluoride, 14-16% of magnesium powder, 8-12% of aluminum powder, 1-2% of graphite, 4-7% of manganese metal and the balance being iron powder. The invention also provides application of the small-sized self-shielded flux-cored wire suitable for all-position welding. The small-sizedself-shielded flux-cored wire is used for the welding of a light steel structure. When the flux-cored wire provided by the invention is used for welding, gas protection is not needed, and the weldingprocess is protected only by slagging, gas-making and strong reducing substances in the flux core components during welding; the small-sized self-shielded flux-cored wire has strong anti-wind capability and high deposition efficiency and meets E71T-11 related requirements in American Standard AWS 5.20.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a small-sized self-shielding flux-cored welding wire suitable for all-position welding and its application. Background technique [0002] As a new type of welding material, self-shielded flux-cored wire, compared with traditional gas-shielded flux-cored wire, does not require gas shielding during welding, and only relies on slag-forming, gas-forming and strong reducing substances in the flux-core component for welding. Process protection, strong wind resistance, high deposition efficiency, and its deposition efficiency is generally 15% higher than that of welding rods. [0003] Small size (wire diameter 0.8mm ~ 1.0mm) self-shielding flux cored wire is mainly used in the welding of light steel structures such as steel doors, steel windows, and thin plates, replacing traditional manual electrodes; when used in all-position welding, its mechanical properties I...

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Application Information

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IPC IPC(8): B23K35/30B23K35/362
CPCB23K35/30B23K35/3053B23K35/362
Inventor 孟庆润汪昌红汪涛包润新
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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