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Flux cores for high heat-input electro-gas welding gas protection welding wires and gas protection welding wires

A technology of gas-shielded welding wire and gas-electric vertical welding, which is applied in arc welding equipment, welding medium, welding equipment, etc., can solve the problems of narrow application range, achieve the purpose of inhibiting grain growth, expanding the application range, and benefiting comprehensive mechanics performance effect

Active Publication Date: 2015-09-23
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, the scope of application of this type of flux-cored wire is relatively narrow

Method used

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  • Flux cores for high heat-input electro-gas welding gas protection welding wires and gas protection welding wires
  • Flux cores for high heat-input electro-gas welding gas protection welding wires and gas protection welding wires
  • Flux cores for high heat-input electro-gas welding gas protection welding wires and gas protection welding wires

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Embodiment Construction

[0089] The flux core of the gas-shielded welding wire, the gas-shielded welding wire and the weld deposit metal of the gas-shielded welding wire for large heat input gas-electric vertical welding according to the present invention will be further explained and illustrated below in conjunction with the description of the accompanying drawings and specific embodiments, however The explanations and illustrations do not constitute undue limitations on the technical solution of the present invention.

[0090] Table 1 lists the mass percentage distribution ratio of the chemical components of the flux core in Examples A1-A5 of the welding wire of the present technical solution.

[0091] Table 1. (The balance is iron powder, wt.%)

[0092]

[0093] Table 2 lists the mass percentage ratio of chemical elements of the steel sheath of the gas shielded welding wire in Examples A1-A5.

[0094] Table 2. (The balance is Fe and other unavoidable impurities except S and P, wt.%)

[0095] ...

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Abstract

The invention discloses flux cores for high heat-input electro-gas welding gas protection welding wires. The flux cores are prepared, by mass percent, by the chemical constituents of 1-3% of at least one of titanium dioxide and rutile, 3-7% of at least one of quartz sand, feldspar and zircon sand, 1-4% of at least one of marble, dolomite and magnesite, 1-3% of at least one of lithium carbonate, sodium carbonate and potassium carbonate, 14-20% of low-carbon ferromanganese, 1-4% of ferromolybdenum, 4-8% of nickel powder, 2-5% of ferrotitanium, 1-5% of rare-earth silicon, 0.01-0.05% of boron powder and the balance iron powder. The invention further discloses the gas protection welding wires for high heat-input electro-gas welding, each gas protection welding wire comprises a steel jacket and the corresponding flux core which is coated with the steel jacket, and the flux core is any one of the flux cores for the high heat-input electro-gas welding gas protection welding wires. The invention further discloses weld deposited metal which is obtained by adopting any one of the gas protection welding wires to conduct welding.

Description

technical field [0001] The invention relates to a welding wire, in particular to a flux-cored welding wire. Background technique [0002] At present, with the rapid development of shipbuilding, ocean engineering, storage tanks and heavy-duty bridge industries, the demand for high-strength extra-thick steel plates is increasing. Correspondingly, in order to improve the welding efficiency of on-site construction and reduce the construction cost, the large heat input gas-electric vertical welding technology has been more and more applied in these fields. The gas-electric welding technology can complete the welding through a single pass of welding heat input according to different steel wall thicknesses, groove types and sizes. Compared with multi-layer multi-pass welding, the use of gas-electric vertical welding technology can greatly improve the efficiency of welding construction, and greatly reduce the input cost of welding construction. [0003] As mentioned above, using t...

Claims

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Application Information

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IPC IPC(8): B23K35/368B23K35/30B23K9/16
CPCB23K9/16B23K35/0266B23K35/3073B23K35/368
Inventor 刘硕翁思源王怀龙钱伟方曹能
Owner BAOSHAN IRON & STEEL CO LTD
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