A high-strength weather-resistant steel flux-cored welding wire and its application
A weathering steel and high-strength technology, applied in the field of high-strength weathering steel flux-cored welding wire, can solve the problems of unguaranteed corrosion resistance of welded joints, hidden safety hazards in welded structures, and increased maintenance costs, and achieve excellent welding process performance. , excellent weather resistance, low corrosion tendency
Active Publication Date: 2021-06-11
WUHAN TEMO WELDING CONSUMABLES CO LTD
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Problems solved by technology
When ordinary flux-cored welding wire is used to weld weathering steel, the corrosion resistance of the welded joints cannot be guaranteed, which makes the welding structure a safety hazard. If the corrosion problem is solved by coating, the maintenance cost will increase
Method used
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Embodiment Construction
[0027] 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.
[0028] The components of the flux core in the flux cored wire provided by Examples 1 to 3 of the present invention and their mass percentages in the flux core are shown in Table 1, wherein the flux core accounts for 14% of the total mass of the flux cored wire.
[0029] Table 1 drug core composition and its mass percentage (%) that accounts for described drug core
[0030]
[0031] The physical and chemical properties of the deposited metal were tested on the three kinds of flux cored wires prepared from the flux core powders of ...
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Abstract
The invention belongs to the technical field of welding materials, and in particular relates to a high-strength weather-resistant steel flux-cored welding wire, which includes a sheath and a flux core filled in the sheath, and the components of the flux core and each component account for a portion of the flux core. The mass percentage content is as follows: TiO 2 35%~42%, potassium titanate 5%~8%, silicate 3%~5%, sodium fluoride 2%~3%, Si 3%~6%, Mn 12%~18%, Mg 3% ~6%, Cu 2%~6%, Ni 9%~16%, Cr 3%~9%, Fe balance. The present invention also provides the application of the above-mentioned flux-cored welding wire for all-position welding of high-strength weather-resistant steel. The high-strength weather-resistant steel flux-cored welding wire provided by the present invention transfers an appropriate amount of Ni, Cr, Cu and other alloy elements to the deposited metal through the flux core powder, so that the weld metal has excellent weather resistance, and its weather resistance index I can be greater than 6.5. The corrosion tendency of the welded joint is small, and the safety of the welded structure is high; it can be used for CO 2 Gas shielded welding is used for all-position welding, with excellent welding process performance and beautiful weld shape.
Description
technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a high-strength weather-resistant steel flux-cored welding wire and its application. Background technique [0002] Weathering steel has been used in industries such as bridges, automobiles, and railway vehicles earlier in the United States and Japan because of its ability to resist atmospheric corrosion. It has the advantages of reducing dead weight, saving maintenance costs, and improving construction efficiency. Ordinary steel structure bridges mainly use painting to solve the corrosion problem at this stage, but the cost of painting and subsequent maintenance costs are relatively high. Therefore, weather-resistant bridge steel has been widely developed at home and abroad. In addition to good mechanical properties, weathering steel also needs to have excellent weather resistance. The supporting flux-cored wire should match the corresponding steel plate i...
Claims
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IPC IPC(8): B23K35/24B23K35/36B23K35/362B23K9/16
CPCB23K9/16B23K35/24B23K35/36B23K35/362
Inventor 蔡俊杨恒闯杨宗全陈成宋昌宝何涛刘东
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD