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Gas protection welding wire for ocean engineering

A marine engineering, gas shielding technology, applied in welding media, manufacturing tools, welding equipment, etc., can solve the problems of undisclosed marine engineering gas shielded welding wire, etc., and achieve good overall crack resistance of welded joints, stable low temperature impact toughness, additional The effect of high value and yield

Inactive Publication Date: 2016-04-06
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing gas-shielded welding wire for marine engineering has not yet disclosed that it can be applied to the special gas-shielded welding wire for marine engineering with a strength of 460 MPa or more.

Method used

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  • Gas protection welding wire for ocean engineering
  • Gas protection welding wire for ocean engineering
  • Gas protection welding wire for ocean engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment specifically provides a gas-shielded welding wire for marine engineering. The following components are selected according to mass percentage: C: 0.09%, Mn: 0.8%, Si: 0.35%, Cr: 0.08%, Ni: 0.6%, Mo: 0.1%, V: 0.01%, Cu: 0.20%, S: 0.002%, P: 0.008%, Ti: 0.06%, B: 0.002%, and the balance is Fe. The invention uses a converter to make steel. After deoxidation and alloying, the molten steel whose composition meets the requirements is smelted. The molten steel is fully protected and cast into a continuous casting slab by a variety casting machine, and the continuous casting slab is rolled into a Φ6.5mm disc by a high-speed twist-free rolling mill. Wire rods are peeled, pickled, borax-coated, wire-drawn, and copper-plated to make Φ1.2mm finished welding wire.

[0032] The welding wire prepared by this embodiment is matched with 80% Ar+20% CO 2 Deposited metal performance test is carried out with the gas, among which, the base material of the test plate: Q460E, t...

Embodiment 2

[0035] This embodiment provides a gas-shielded welding wire for marine engineering. The following components are selected according to mass percentage: C: 0.13%, Mn: 1.4%, Si: 1.20%, Cr: 0.20%, Ni: 1.3%, Mo: 0.4 %, V: 0.03%, Cu: 0.25%, S: 0.002%, P: 0.010%, Ti: 0.20%, B: 0.008%, and the balance is Fe. The invention adopts converter steelmaking, and after deoxidation and alloying, molten steel whose composition meets the requirements is smelted. The molten steel is fully protected and cast into a continuous casting slab by a variety casting machine, and the continuous casting slab is rolled into a Φ6.5mm disc by a high-speed non-torsion rolling mill. Wire rods are peeled, pickled, borax-coated, wire-drawn, and copper-plated to make Φ1.2mm finished welding wire.

[0036] The welding wire prepared by this embodiment is matched with 80% Ar+20% CO 2 Deposited metal performance test is carried out with the gas, among which, the base material of the test plate: Q460E, the thickness ...

Embodiment 3

[0039] This embodiment provides a gas-shielded welding wire for marine engineering. The following components are selected according to mass percentage: C: 0.11%, Mn: 1.2%, Si: 0.7%, Cr: 0.15%, Ni: 1.0%, Mo: 0.25 %, V: 0.02%, Cu: 0.22%, S: 0.0015%, P: 0.008%, Ti: 0.15%, B: 0.005%, and the balance is Fe. The invention adopts converter steelmaking, and after deoxidation and alloying, molten steel whose composition meets the requirements is smelted. The molten steel is fully protected and cast into a continuous casting slab by a variety casting machine, and the continuous casting slab is rolled into a Φ6.5mm disc by a high-speed non-torsion rolling mill. Wire rods are peeled, pickled, borax-coated, wire-drawn, and copper-plated to make Φ1.2mm finished welding wire.

[0040] The welding wire prepared by this embodiment is matched with 80% Ar+20% CO 2 Deposited metal performance test is carried out with the gas, among which, the base material of the test plate: Q460E, the thickness...

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Abstract

The invention particularly provides a gas protection welding wire for ocean engineering. The gas protection welding wire for ocean engineering is composed of, by mass, 0.09-0.13% of C, 0.8-1.4% of Mn, 0.35-1.20% of Si, 0.08-0.20% of Cr, 0.6-1.3% of Ni, 0.1-0.4% of Mo, 0.01-0.03% of V, 0.20-0.25% of Cu, 0.015% or less of S, 0.025% or less of P, 0.06-0.20% of Ti, 0.002-0.008% of B, and the balance Fe. The composition matching of the welding wire and a welded steel board and influence of protective gas on alloy element burning loss and transition are comprehensively considered, on the basis of an Ni-Cu anti-corrosion alloy system, the compositions and content are controlled and adjusted, and therefore the welding wire has excellent impact toughness, welding performance, corrosion resistance, fatigue resistance, crack-tip opening displacement (CTOD) and other special properties, the board thickness center portion of an ultra-thick board has high strength and low-temperature toughness, and the welding wire can be matched with 460-MPa steel for ocean engineering for welding.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a gas-shielded welding wire for marine engineering, which is suitable for welding high-strength steel for marine engineering with a yield strength of 460 MPa or above. Background technique [0002] Due to the harsh working environment of marine engineering equipment, the requirements for steel and supporting materials for marine engineering equipment are relatively high, and the lack of high-strength steel welding materials restricts the development of my country's marine engineering equipment industry. It is urgent to carry out serialization of high-strength steel supporting welding materials for marine engineering Research and engineering application research. [0003] In addition to high strength, the high-strength steel for offshore platform structures also requires special properties such as excellent impact toughness, welding performance, and crack tip ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3073B23K35/0261
Inventor 王玲艳卢伟包润新刘玉双朱林威
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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