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High-corrosion-resistance gas protection welding wire

A gas shielded welding wire, high corrosion resistance technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., to achieve excellent welding process performance, good atmospheric corrosion resistance, and beautiful shape

Active Publication Date: 2015-07-01
CENT IRON & STEEL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Table 2. Prior Art Welding Wire Chemical Composition

Method used

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Embodiment Construction

[0030] Below, the present invention will be further described in detail in conjunction with examples.

[0031] Within the scope of the chemical composition of the welding wire of the present invention, control smelting is carried out according to the specific chemical composition of each embodiment in Table 4. Then, the smelted steel ingot is rolled into a φ8 wire rod, followed by heat treatment and drawing, and finally a φ1.2 welding wire is obtained.

[0032] Using the welding wire of the present invention, with 80%Ar+20%CO 2 The gas is used for the performance test of the deposited metal. Among them, the thickness of the welding test plate is 20mm, the groove form is 45° single-sided V-shaped butt joint, and the bottom surface gap is 12mm. The specific welding specifications are: welding current 260A, arc voltage 29V, welding speed 38cm / min, layer temperature 150°C. After welding, the tensile samples and impact samples of deposited metal were taken for mechanical perform...

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Abstract

The invention belongs to the field of welding materials, and relates to a high-corrosion-resistance gas protection welding wire. The welding wire comprises the following chemical compositions in percentage by mass: 0.01-0.1 percent of C, 0.1-1.0 percent of Si, 0.3-1.0 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.015 percent of S, 1.5-5 percent of Ni, 0.5-1.5 percent of Cr, 0.1-0.8 percent of Cu, 0.01-0.2 percent of Ti, 0.15-0.6 percent of Mo, less than or equal to 0.01 percent of O, less than or equal to 0.01 percent of N and the balance of ferrum. The welding wire has stable welding performance, and obtained deposited metal is matched with the corrosion resistance of parent metal; and meanwhile, the welding wire has high comprehensive mechanical performance, and is particularly suitable for novel high-weather-proof steel.

Description

technical field [0001] The invention belongs to the field of welding materials, and relates to a high-corrosion-resistant gas-shielded welding wire material for metal material welding, and is especially suitable for steel types requiring high weather resistance. Background technique [0002] Ordinary weathering steel and high-strength weathering steel have good economic performance, excellent processing performance and comprehensive performance, but their atmospheric corrosion resistance cannot meet the current requirements of weathering steel for railway wagons; the weathering performance of stainless steel can meet the conditions of use of wagons, but the price is expensive , and stainless steel still has certain problems in low temperature toughness, weldability, etc., which restricts its application in railway vehicles. [0003] In recent years, with the rapid development of the railway industry, the railway wagon industry is in urgent need of a weathering steel with goo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/34
Inventor 彭云肖晓明齐彦昌张晓牧田志凌马成勇肖红军
Owner CENT IRON & STEEL RES INST
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