A high-strength high-toughness weather-resistant gas protection welding wire for steel

A gas shielded welding wire, high toughness technology, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the problems of dependence and high cost, and achieve the effect of excellent performance, beautiful shape, and excellent welding process performance.

Inactive Publication Date: 2017-01-11
ANGANG STEEL CO LTD
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AI Technical Summary

Problems solved by technology

It is a weather-resistant gas-shielded welding wire specially used for welding the bogie frames of CRH3 EMUs. It solves the problems that the weather-resistant gas-shielded welding wires of high-speed train

Method used

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  • A high-strength high-toughness weather-resistant gas protection welding wire for steel
  • A high-strength high-toughness weather-resistant gas protection welding wire for steel

Examples

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Example Embodiment

[0023] The following examples further illustrate the present invention, but they are not enough to limit the present invention.

[0024] In the present invention, the weather-resistant gas shielded welding wire can be smelted and produced in a vacuum induction furnace, or can be smelted and produced in an electric furnace plus an out-of-furnace refining method, as long as the final chemical composition of the welding wire can meet the requirements of the above invention; the entire smelting production process of the welding wire And the processing process is the same as that of ordinary gas shielded welding wire.

[0025] In the present invention, the surface of the gas shielded welding wire for high-strength and high-toughness weathering steel is provided with a copper-plated layer, and the Cu content in the copper-plated layer accounts for 0.05-0.25% of the total weight of the welding wire.

[0026] See Table 1 for the composition of the welding wires of the examples and comparativ...

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Abstract

The invention provides a high-strength high-toughness weather-resistant gas protection welding wire for steel. The welding wire steel comprises, in weight percentage, 0.03%-0.11% of C, 0.70%-1.50% of Mn, 0.25%-0.90% of Si, 0.55%-1.40% of Ni, 0.15%-0.45% of Cu, 0.05%-0.18% of Ti, not more than 0.015% of S, and not more than 0.020% of P, the balance being iron and inevitable impurities. The welding wire is used for the welding of steel of the 550 MPa strength grade; the welding wire steel smelting process is stable and easy to implement, and the technical requirements for welding high-strength, high-toughness and high-weather resistance steel are met. The gas protection welding wire has excellent welding process properties, has the advantages of stable welding arcs, less splatter, zero gas pores and artistic formation and is suitable for all-position welding.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a gas-shielded welding wire for welding high-strength, high-toughness and high-weather-resistant steels. Background technique [0002] The gas shielded welding method is widely used in important structures such as vehicles, ships, railway bridges, engineering machinery, and pressure vessels due to its advantages such as low welding cost, energy saving, high production efficiency, good welding processability, easy automation, and good weld quality. Manufacturing of parts. In recent years, with the continuous development of smelting technology and the application of controlled rolling, controlled cooling and microalloying elements, the properties of steel are developing towards high strength, high toughness and high weather resistance, so as to reduce material consumption and lighten the structure. Weight, improve structural performance, safety and service life. The production of...

Claims

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Application Information

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IPC IPC(8): B23K35/30
CPCB23K35/3053
Inventor 魏世同刘仁东吕冬林利陆晓锋徐荣杰丁庶炜徐鑫
Owner ANGANG STEEL CO LTD
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