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Three-filum open arc welding method

A welding method and welding direction technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of high investment cost, poor flexibility, increased investment cost, etc., achieve simple process realization, improve welding speed, and improve welding The effect of efficiency

Inactive Publication Date: 2008-03-05
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of method can greatly increase the welding wire deposition rate, the production of the welding torch is complicated, which increases the investment cost and sacrifices the control and flexibility of use
Due to the high investment cost, single use of the process, and poor flexibility, it is difficult to be universal in the promotion of the process itself.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] When welding flat plates in ship structures, the thickness of the steel plates is 15mm, and the shielding gas is 100% CO 2 , the welding machine is Panasonic 500GR3, and its process parameters are: the welding wire grade is MX-200H, the welding wire diameter is Ф1.2mm, the welding voltage of the three welding wires is 32V, the welding current is 320V, the dry elongation is 12mm, and the gas flow rate is 15L / min, the welding power supply is connected to the negative pole of the workpiece, and the positive pole of the welding torch. The angle α between the leading welding torch, the following welding torch and the vertical direction of the workpiece is 15°, and the middle welding torch is perpendicular to the workpiece. The leading welding torch, the middle welding torch and the following welding torch are arranged longitudinally, and the angle β with the horizontal direction of the workpiece is 90°. The distance between the leading welding torch and the middle welding t...

Embodiment 2

[0027] For the fillet welding of the rib reinforcement plate, the thickness of the plate is 15mm, the thickness of the rib reinforcement plate is 10mm, and the shielding gas is 100% CO 2 , the welding machine is Panasonic 500GR3, and its process parameters are: the welding wire grade is MX-200H, the welding wire diameter is Ф1.6 mm, the voltage of the leading welding torch is 36V, the voltage of the middle welding torch is 31V, the voltage of the following welding torch is 28V, the leading welding torch The current of the welding torch is 400A, the current of the middle welding torch is 310A, and the current of the following welding torch is 260A. The dry elongation of the welding wire is set to 20mm, the gas flow rate is 20L / min, the welding power supply is DC positive connection, the angle α between the leading welding torch, the following welding torch and the middle welding torch is 15°, the leading welding torch, the middle welding torch and the following welding torch Arra...

Embodiment 3

[0029] For the fillet welding of the rib reinforcement plate, the thickness of the plate is 15mm, the thickness of the rib reinforcement plate is 10mm, and the shielding gas is 100% CO 2 , the welding machine is Panasonic 500GR3, and its process parameters are: the welding wire grade is MX-200H, the welding wire diameter is Ф1.6mm, the voltage of the leading welding torch is 36V, the voltage of the intermediate welding torch is 35V, the voltage of the following welding torch is 30V, the leading welding torch The current is 390A, the current of the middle welding torch is 390A, and the current of the following welding torch is 280A. The dry elongation of the welding wire is set to 20mm, the gas flow rate is 20L / min, the welding power supply is DC positive connection, the angle α between the leading welding torch, the following welding torch and the middle welding torch is 15°, the leading welding torch, the middle welding torch and the following welding torch Arranged longitudi...

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Abstract

The present invention relates to welding technology, and discloses three wire open arc welding process. Three welding torches with separate welding wires and welding power sources and separate welding parameter adjustments are applied simultaneously in the gas metal-arc welding. These three welding torches are arranged longitudinally in the welding direction for flat welding or corner welding, and their angles and intervals are regulated separately. For high welding speed and welding quality, their electric arc parameters are regulated separately and they may operate in the welding mode of one, two or three molten pools. The present invention has high welding efficiency and is especially suitable for long weld seam welding.

Description

technical field [0001] The invention relates to a method in the field of welding technology, in particular to a three-wire open-arc welding method under the gas protection of the melting electrode. Background technique [0002] High-efficiency welding is a welding method widely pursued in various industrial manufacturing fields, especially for steel structural parts with long welds. The multi-wire welding method is the most common method. By melting multiple welding wires at the same time during the welding process, the welding deposition rate is greatly improved. On the premise of ensuring the welding quality, the welding speed is greatly improved compared with single-wire welding. Production Efficiency is improved. [0003] Find through literature search to prior art, Hiroshi ARITA etc. in IIW conference, the Technical Development of Advanced 3-ElectrodeMAG High Speed ​​Horizontal FilletWelding Process (three-electrode high-speed vertical fillet welding process) published...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173
Inventor 华学明马晓丽鬼木保彦黄坚上藤茂施建刚沈甘迪蔡艳
Owner SHANGHAI JIAO TONG UNIV
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