High-strength and high-flexible acid electrode for ships

An acid electrode, high-strength technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of low weld strength and low-temperature impact toughness, low welding fume toxicity, and low transition efficiency. The effect of reducing manganese content, excellent comprehensive performance and improving efficiency

Inactive Publication Date: 2010-06-16
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the excessive content of ferromanganese in the existing acid welding rod, low transition efficiency, low weld strength and...

Method used

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  • High-strength and high-flexible acid electrode for ships
  • High-strength and high-flexible acid electrode for ships

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Embodiment

[0019] Referring to Table 1, the mass percent parameters of 12 kinds of coating components have been listed in Table 1, wherein there is 1 comparative example without adding aluminum, magnesium and ferrosilicon and 11 embodiments of electrode coating of the present invention, used The welding core is H08A, and the welding rod of the present invention is produced by conventional acid welding rod manufacturing process, wherein the aluminum and magnesium are aluminum powder and magnesium powder or aluminum-magnesium alloy, and the described ferrosilicon is No. 45 ferrosilicon. And the chemical composition and mechanical properties of the deposited metal of the comparative example and each embodiment electrode in Table 1 were tested. The results are shown in Table 2.

[0020] Table 1 Electrode coating composition (mass percentage)

[0021]

[0022] Table 2 Chemical composition and mechanical properties of deposited metal

[0023]

[0024] Referring to Table 2, it can be se...

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Abstract

The invention discloses a high-strength and high-flexible acid electrode for ships, belonging to the technical field of welding materials and welding. The high-strength and high-flexible acid electrode comprises a welding core and a coating, wherein the welding core is H08A steel; and the coating comprises the following components in mass percentage: 15-45 of reduced ilmenite, 3-30 of rutile, 6-30 of marble, 3-20 of illite, 3-10 of sericite, 1-10 of mica, 5-15 of mid-carbon fe-mn, 0.1-6 of aluminum, 0.05-6 of magnesium, 0.5-3 of ferrosilicon and 1-5 of cellulose. By adopting a manganese and aluminum-magnesium-silicon combined deoxidation mode, the oxidation of manganese is reduced, thereby improving the efficiency of manganese as an alloy agent being transmitted to a welding seam; and the usage amount of manganese and the material cost in the coating are decreased and the manganese content in welding fly dust is reduced, thereby decreasing the toxicity of the welding fly dust, protecting the health of a welder and saving the manganese resources at the same time. The invention has excellent welding process property and excellent deposited metal and welded joint comprehensive property, and is particularly suitable for the steel plate 3Y-level welding seam welding and the assembly spot welding and repairing for DH36 and EH36 ships.

Description

technical field [0001] The invention relates to a welding rod, in particular to a marine high-strength and high-toughness acid welding rod. The invention belongs to the field of welding materials and welding technology. Background technique [0002] Oxygen will react with the metal during the welding process and affect the mechanical properties of the weld metal. Therefore, alloy powder must be added to the electrode coating as a deoxidizer to protect the weld metal and the alloy elements that need to transition to the weld. At present, the acid electrodes used in the market all use ferromanganese as a deoxidizer. At the same time, because manganese is very important to ensure the mechanical properties such as low temperature toughness of the acid electrodes, ferromanganese is also used as an alloying agent. In order to ensure the manganese content of the weld, a large amount of ferromanganese must be added to the electrode coating. Excessive addition of manganese will red...

Claims

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Application Information

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IPC IPC(8): B23K35/24
Inventor 吴光辉吕奎清
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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