Series-connected double-wire type combined welding wire for CO2 gas shield high-speed flat fillet weld
A high-speed flat fillet welding and gas shielding technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of lack of paint resistance and achieve high deposition speed, good paint resistance, The effect of increasing the impact value
Active Publication Date: 2014-03-26
KUSN GINTUNE WELDING
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Problems solved by technology
However, if the welding speed is to be further increased, good paint resistance cannot be obtained due to the limitation of the flux-type flux-cored wire itself.
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[0030] In order to better understand the invention, the following examples 1 to 7 are used to further illustrate, but the present invention is not limited to the following examples.
[0031] In the following embodiments, the general manufacturing process in the welding wire production industry is adopted, the first steel strip sheath is prepared according to the components described in Table 1, the metal core powder is prepared according to the components described in Table 2, and the components are prepared according to the components described in Table 3 For the second steel strip sheath, prepare welding flux powder according to the composition described in Table 4, and wrap the metal flux core powder in the first steel strip sheath, and wrap the welding flux powder in the second steel strip sheath. In the skin.
[0032] Table 1 Composition of the first steel strip sheath of the leading electrode wire (%)
[0033]
[0034] Table 2 Composition of metal flux core powder of...
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The invention discloses a series-connected double-wire type combined welding wire for CO2 gas shield high-speed flat fillet weld. The series-connected double-wire type combined welding wire for the CO2 gas shield high-speed flat fillet weld comprises an antecedent electrode welding wire and a posterior electrode welding wire, the antecedent electrode welding wire and the posterior electrode welding wire are connected in series, the antecedent electrode welding wire is formed by a first steel-tape sheath and metal cored powder contained inside the first steel-tape sheath, the weight of the metal cored powder is 10-30% of the total weight of the antecedent electrode welding wire, the antecedent electrode welding wire is high in deposition rate, the quantity of generated slag is small in a welding process, and a small amount of added fluoride enables the electric arc to be more stable. The posterior electrode welding wire is formed by a second steel-tape sheath and welding flux powder contained inside the second steel-tape sheath, the weight of the welding flux powder is 10-30% of the total weight of the posterior electrode welding wire, the content of the diffusible hydrogen of deposited metal can be reduced to be lower than 5ml/100g through the posterior electrode welding wire, and CO released by combustion of an undercoat can be reduced by Al and Mg in the welding process. A small amount of titanium and boron are added in both the metal cored powder and the welding flux powder, and the impact value of the deposited metal can be improved greatly. When welding is carried out at the welding speed higher than 1.5m/min, the combined welding wire is excellent in welding process, and good paint resistant performance can be obtained.
Description
technical field [0001] The invention relates to a welding wire for carbon dioxide gas shielded welding, in particular to a CO 2 The invention relates to a tandem twin-wire combined welding wire for gas-shielded high-speed flat fillet welding, which is suitable for ship welding and belongs to the field of metal welding materials. Background technique [0002] Ship welding is one of the main crafts of ship construction. In order to improve the quality of ship construction, all the shipbuilding powers in the world are currently using a large number of advanced and efficient welding technologies to improve the welding quality and construction speed of ships. At present, in the welding process of the longitudinal frame and the outer plate of the ship, the double series high-speed flat-angle CO 2 Gas shielded welding, which realizes the automation and efficiency of shipbuilding to a certain extent. Current Dual Series High Speed Flat Angle CO 2 The welding wire used in gas sh...
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IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/3073B23K35/368
Inventor 蔡鸿祥庄石城叶桂林
Owner KUSN GINTUNE WELDING
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