A Method of Improving the Welding Efficiency of Double-sided Welding

A welding efficiency, double-sided welding technology, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problem of welding seam embrittlement, achieve good alloying uniformity, reduce welding workload, and reduce welding seam effect of quantity

Active Publication Date: 2017-09-29
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the existing single-side welding and double-side forming technology is used for welding, it is necessary to use a large current to weld the front of the steel plate to force the back of the weld to form, but the welding seam often causes embrittlement due to the use of large input energy welding

Method used

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  • A Method of Improving the Welding Efficiency of Double-sided Welding

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: high-strength weather-resistant steel plate (thickness = 3.8mm) flux-cored welding wire ceramic liner single-sided welding double-sided forming flat butt welding. Welding conditions:

[0048] (1) Welding requirements for flat butt joints: the inclination angle of the weld seam is 0°, the deviation is ±5°, the weld seam rotation angle is 90°, the deviation is ±10°;

[0049] (2) The welding equipment is: WSE-250 argon arc welding machine;

[0050] (3) The welding wire is: flux-cored wire, Ф1.0mm; the formula of the alloy powder constituting the flux-cored wire is as follows in parts by mass: electrolytic manganese 8, 45# ferrosilicon 6, ferro-titanium 4, metal chromium 35, high-carbon ferrochrome 30, graphite 5, vanadium iron 6, molybdenum iron 18, tungsten powder 4, nickel powder 8, aluminum nitride 2, titanium nitride 6, potassium feldspar 2, sodium fluorosilicate 4, marble 25, fluorite 15, titanium white powder 1-3, quartz 5, mica 5;,

[0051] (4) The ...

Embodiment 2

[0060] Embodiment 2: high-strength weather-resistant steel (thickness = 3.8mm) flux-cored welding wire ceramic backing single-sided welding double-sided forming flat butt welding.

[0061] Welding conditions:

[0062] (1) Welding requirements for flat butt joints: the inclination angle of the weld seam is 0°, the deviation is ±5°, the weld seam rotation angle is 90°, the deviation is ±10°;

[0063] (2) The welding equipment is: WSE-250 argon arc welding machine;

[0064] (3) The welding wire is: flux-cored wire, Ф1.0mm; the formula of the alloy powder constituting the flux-cored wire is as follows in parts by mass: electrolytic manganese 4, 45# ferrosilicon 2, ferro-titanium 1, metal chromium 20, high-carbon ferrochrome 20, vanadium iron 2, molybdenum iron 12, tungsten powder 2, nickel powder 4, aluminum nitride 1, titanium nitride 2, potassium feldspar 1, sodium fluorosilicate 1, marble 20, fluorite 10, titanium dioxide 1, Quartz 2, Mica 2;

[0065] (4) The ceramic liner i...

Embodiment 3

[0074] Embodiment 3: high-strength weather-resistant steel (thickness = 3.8 mm) flux-cored welding wire ceramic backing single-sided welding double-sided forming flat butt welding.

[0075] Welding conditions:

[0076] (1) Welding requirements for flat butt joints: the inclination angle of the weld seam is 0°, the deviation is ±5°, the weld seam rotation angle is 90°, the deviation is ±10°;

[0077] (2) The welding equipment is: WSE-250 argon arc welding machine;

[0078] (3) The welding wire is: flux-cored wire, Ф1.0mm; the alloy powder formula of the flux-cored wire is as follows in parts by mass: electrolytic manganese 6, 45# ferrosilicon 4, ferro-titanium 3, metal chromium 30, high-carbon ferrochrome 25, graphite 3, vanadium iron 4, molybdenum iron 16, tungsten powder 3, nickel powder 6, aluminum nitride 1.5, titanium nitride 4, potassium feldspar 1.5, sodium fluorosilicate 2.5, marble 24, fluorite 12, titanium White powder 2, quartz 4, mica 3;

[0079] (4) The ceramic ...

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Abstract

The invention discloses a novel method for improving double-side welding efficiency. The influence of technological parameters of a single-side welding and double-side molding technology on the microscopic structure and macro-mechanical properties of deposited metal is studied. The result indicates that due to the fact that the variety and molding methods of base plates are different, the formula and welding technical parameters of flux-cored wires are changed greatly, the process is improved according to the characteristics of high-strength weathering resistant steel and single-side welding and double-side molding, flux-cored wire alloy powder and an argon-rich gas protection welding process dedicated to welding the high-strength weathering resistant steel are developed, the phenomenon of cracking and hardening of the high-strength weathering resistant steel in the double-side molding process is effectively avoided, the high-temperature rigidity and abrasion resisting performance of the deposited metal are improved, and the deposited metal has good toughness and anti-cracking performance.

Description

technical field [0001] The invention relates to the field of welding engineering, and specifically relates to a method for improving the welding efficiency of double-sided welding. Background technique [0002] For the welding of thin plate structures with a plate thickness less than 6mm, if the welding process method of single-sided welding and double-sided forming is adopted as a whole, it will theoretically cause large welding deformation, and it is difficult to correct pyrotechnics. At present, in structures with plate thickness less than 6mm, all butt welds are constructed by V-groove double-sided symmetrical welding. According to the actual welding effect, this process mainly has the following problems: [0003] 1. When some products have to be constructed in the field, the production conditions are poor, and there is no large-scale lifting equipment to cooperate with the return of its structure, so it is difficult to realize the welding work of the back weld; [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/16B23K9/235B23K33/00B23K9/025B23K35/38B23K35/362B23K9/035B23K101/18B23K103/04
CPCB23K9/025B23K9/035B23K9/16B23K9/235B23K33/00B23K35/3602B23K35/362B23K35/383
Inventor 刘吉祥于开红常正坤刘吉利孙蕊蕊袁东立
Owner LUXI CHEM GRP
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