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Gas shielded welding wire for automatic welding of 07MnMoVR spherical tank

A gas shielded welding wire and automatic welding technology, applied in applications, household containers, welding media, etc., can solve the problems of unsightly welding bead formation, insufficient low-temperature impact toughness, and inability to meet the requirements of weld metal, etc., to meet the requirements of HIC and SCC resistance. performance, good low temperature impact performance, good welding process performance effect

Inactive Publication Date: 2017-02-22
SHANGHAI ATLANTIC WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, domestic spherical tanks are manufactured by on-site welding and assembly. Ordinary welding wires cannot be welded in all positions, and cannot meet the requirements of weld metal properties that can be used in flat, horizontal, vertical, and supine positions. The low-temperature impact toughness is insufficient and cannot Satisfies low temperature impact performance requirements, poor fluidity of molten iron, unattractive weld bead formation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The invention is a gas-shielded welding wire for automatic welding of 07MnMoVR spherical tanks. The welding wire is a low-alloy steel welding wire with excellent low-temperature performance. Mn, Si, Ni, Mo and other alloy elements are added to the welding wire. In addition, the welding wire An appropriate amount of Ti trace element is also added to improve the low-temperature impact toughness of the weld metal, which is used for welding 07MnMoVR spherical tanks. The composition of the welding wire is as follows: the alloy elements are calculated by weight percentage, C≤0.1%, Mn is 1.3%, Si is 0.3%, S≤0.01%, P≤0.02%, Cr≤0.5%, Ni is 0.5%, Mo is 0.1%, Cu≤0.5%, Ti is 0.02%, and the rest is Fe and unavoidable impurities.

[0011] C can strengthen the welding wire, and at the same time, by controlling the appropriate amount of C component, it can avoid the tendency of thermal cracking; Ti is a strong deoxidizing element, which can improve the ability of the weld metal to resi...

Embodiment 2

[0016] The invention is a gas-shielded welding wire for automatic welding of 07MnMoVR spherical tanks. The welding wire is a low-alloy steel welding wire with excellent low-temperature performance. Mn, Si, Ni, Mo and other alloy elements are added to the welding wire. In addition, the welding wire An appropriate amount of Ti trace element is also added to improve the low-temperature impact toughness of the weld metal, which is used for welding 07MnMoVR spherical tanks. The composition of the welding wire is as follows: the alloy elements are calculated by weight percentage, C≤0.12%, Mn is 2.0%, Si is 1.0%, S≤0.01%, P≤0.02%, Cr≤0.5%, Ni is 1.5%, Mo is 0.6%, Cu≤0.5%, Ti is 0.1%, and the rest is Fe and unavoidable impurities.

[0017] In the present invention, the technical requirements are determined first, the composition requirements of the welding wire are determined according to the test, smelting is carried out according to the technical requirements of the above formula, o...

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PUM

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Abstract

The invention discloses a gas shielded welding wire for automatic welding of a 07MnMoVR spherical tank. The welding wire is a low alloy steel welding wire, the welding wire is prepared from, by weight, 0.12% or less of C, 1.3-2.0% of Mn, 0.30-1.0% of Si, 0.01% or less of S, 0.02% or less of P, 0.5% or less of Cr, 0.5-1.5% of Ni, 0.1-0.6% of Mo, 0.5% of Cu and 0.02-0.1% of Ti. The gas shielded welding wire has the advantages that the formula proportion is reasonable, welding technological performance is good, and by adding a proper amount of trace elements and a certain amount of Mn, Ni, Mo and other alloy elements, the properties of a welded metal on a flat position, a horizontal position, an vertical position and an supine position can meet requirements, and the welding wire can be applied to all-position welding.

Description

technical field [0001] The invention relates to a welding rod, in particular to a gas-shielded welding wire for automatic welding of 07MnMoVR spherical tanks. Background technique [0002] At present, domestic spherical tanks are manufactured by on-site welding and assembly. Ordinary welding wires cannot be welded in all positions, and cannot meet the requirements of weld metal properties that can be used in flat, horizontal, vertical, and supine positions. The low-temperature impact toughness is insufficient and cannot It meets the requirements of low temperature impact performance, the fluidity of molten iron is poor, and the shape of the weld bead is not beautiful. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a gas-shielded welding wire for automatic welding of 07MnMoVR spherical tanks, so as to improve the low-temperature impact toughness of the weld metal and improve the performance of the weld metal in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K9/173B23K101/12
CPCB23K35/3066B23K9/173B23K2101/125
Inventor 宋波张毅吴平包朝安
Owner SHANGHAI ATLANTIC WELDING CONSUMABLES
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