Welding method of CO2 gas shielded welding for solid welding wire with diameter of phi 1.6

A technology of gas shielded welding and welding methods, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of unguaranteed welding quality, unadaptable welding parameters, difficult operation, etc., so as to ensure welding efficiency and welding quality Effect

Inactive Publication Date: 2014-04-02
PANGANG GRP ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous research and development of welding material manufacturers, large-diameter welding wires can be produced, which is represented by Φ1.6. Due to the increase in the diameter of the welding wire used, the welding efficiency can be rapidly improved in theor

Method used

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  • Welding method of CO2 gas shielded welding for solid welding wire with diameter of phi 1.6
  • Welding method of CO2 gas shielded welding for solid welding wire with diameter of phi 1.6
  • Welding method of CO2 gas shielded welding for solid welding wire with diameter of phi 1.6

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Embodiment 1-6

[0032] Use Φ1.6 solid core wire for CO 2 Gas shielded welding, the workpiece to be welded is a Q345B plate with a thickness of 40mm, the welding equipment is NB-630, and the welding wire grade is H08Mn2SiA. The welding process sequentially includes a welding primer layer, a welding filling layer and a welding capping layer. In Examples 1-3, the welding method of vertical welding is adopted, X-shaped grooves (double-sided gaps) are set up, the gaps reserved between the welding workpieces are 3mm, 4mm, and 5mm, and the number of welding layers is 6 layers (3 layers on one side) ); In the embodiment 4-6, the welding method of horizontal welding is adopted, and a K-shaped groove is set up. 14 (7 on one side) and 16 (8 on one side), the number of welding layers is 6 (3 on one side); see Table 1 for the selection of welding current, arc voltage and shielding gas flow during welding.

[0033] Table 1

[0034]

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Abstract

The invention relates to a welding method of CO2 gas shielded welding for a solid welding wire with the diameter of phi 1.6. The welding method comprises the step of welding a workpiece by a way of vertical position welding or horizontal position welding, wherein the welding process sequentially comprises the steps of welding a base layer, welding a filler layer and welding a cover surface layer, and the thickness of the welded workpiece is not less than 30mm; when the workpiece is welded in the way of vertical position welding, the welding current is 150-180A, and the arc voltage is 20-24V when the base layer is welded; the welding current is 160-240A, and the arc voltage is 20-28V when the filler layer is welded; the welding current is 150-200A, and the arc voltage is 20-26V when the cover surface layer is welded; when the workpiece is welded in the way of horizontal position welding, the welding current is 180-220A, and the arc voltage is 23-26V when the base layer is welded; the welding current is 230-280A, and the arc voltage is 24-28V when the filler layer is welded; the welding current is 160-200A, and the arc voltage is 20-26V when the cover surface layer is welded.

Description

technical field [0001] The present invention relates to the field of welding, in particular to a Φ1.6 solid core welding wire CO 2 Welding method of gas shielded welding. Background technique [0002] In recent years, gas shielded welding has developed rapidly in my country, and semi-automatic gas shielded welding technology is mostly used in on-site production and installation. However, the current CO 2 Gas shielded welding mainly uses Φ1.0-Φ1.2 welding wire, Φ1.0 solid core welding wire CO 2 The welding parameters during gas shielded welding are: welding current is 110A-140A, arc voltage is 18V-20V, Φ1.2 solid core wire CO 2 The welding parameters of gas shielded welding are: welding current is 120A-160A, arc voltage is 21V-24V. However, with the continuous development of the scale of engineering construction, more and more thick structural parts are produced and applied. When using the existing Φ1.0-Φ1.2 welding wire to weld thick structural parts, due to the larger d...

Claims

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Application Information

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IPC IPC(8): B23K9/16B23K35/02
CPCB23K9/16B23K35/0266
Inventor 何耀飞冯树雄吴荣善朱宁秦川付庆斌张康明梁恩荣陈梦逢
Owner PANGANG GRP ENG TECH
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