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High-impact-toughness solid weld wire resisting acid liquid corrosion and preparation method thereof

A solid wire, high impact technology, used in welding equipment, welding media, manufacturing tools, etc., can solve the problem of not being able to have both high resistance to sulfuric acid and hydrochloric acid corrosion and low temperature impact toughness, to reduce cold crack sensitivity, ensure Sulfuric acid and hydrochloric acid corrosion resistance, carbon equivalent reduction effect

Inactive Publication Date: 2019-06-14
SHOUGANG CORPORATION
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Problems solved by technology

[0004] The present invention solves the technical problem in the prior art that high sulfuric acid and hydrochloric acid corrosion resistance and low temperature impact toughness can not be achieved by providing a high impact toughness solid welding wire with acid corrosion resistance and its preparation method

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  • High-impact-toughness solid weld wire resisting acid liquid corrosion and preparation method thereof

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Embodiment Construction

[0029] The embodiment of the present invention solves the technical problem in the prior art that high corrosion resistance to sulfuric acid and hydrochloric acid and low-temperature impact toughness cannot be achieved by providing a high impact toughness solid welding wire with acid corrosion resistance and a preparation method thereof.

[0030] The technical solution in the embodiment of the present invention is to solve the above-mentioned problems, and the general idea is as follows:

[0031] The embodiment of the present invention adopts ultra-low carbon, reduces the carbon equivalent, thereby reducing the cold crack sensitivity of the weld metal, and at the same time helps to improve low-temperature impact toughness. At the same time, appropriate Si, Mn, Cu, and Cr contents can ensure the strength of the weld metal. A higher Ni content can improve the low temperature impact toughness of the weld metal. In addition, by adding a certain amount of Sb element, the corrosion...

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Abstract

The invention discloses a high-impact-toughness solid weld wire resisting acid liquid corrosion and a preparation method thereof. Ultra-low carbon is adopted, the equivalent carbon content is reduced,thus cold crack sensitivity of weld seam metal is reduced, and meanwhile, low-temperature impact toughness is improved beneficially. Meanwhile, with suitable content of Si, Mn, Cu and Cr, the strength of the weld seam metal can be ensured. With high Ni content, the low-temperature impact toughness of the weld seam metal can be improved. In addition, by adding a certain amount of Sb element, the sulfur and hydrochloric salt corrosion resisting performance of the weld seam metal can be ensured, and thus the technical problem that in the prior art, high sulfur and hydrochloric salt corrosion resisting performance and low-temperature impact toughness cannot be possessed at the same time is solved.

Description

technical field [0001] The invention relates to the technical field of matching welding materials for acid-resistant steel, in particular to a solid welding wire with high impact toughness and acid corrosion resistance and a preparation method thereof. Background technique [0002] The structure of some components in thermal power generation, petroleum and petrochemical, waste incineration and other industries has important requirements for the acid resistance of steel, and its flue gas channels, heat exchanger element plates, heating furnace shells, etc. have been working in acid gas environments for a long time. At present, the steel used is mainly 09CrCuSb steel, which forms a protective layer of alloy elements such as CuCr and Sb in an acidic corrosion environment, so it has good corrosion resistance to sulfuric acid and hydrochloric acid. However, at present, more industries have put forward higher requirements for sulfuric acid and hydrochloric acid corrosion-resistant...

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Application Information

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IPC IPC(8): B23K35/30B23K35/40
Inventor 张侠洲陈延清王凤会赵英建牟淑坤郭占山
Owner SHOUGANG CORPORATION
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