Double-side double-arc vertical welding fusion depth control device and welding method thereof

A control device, double-sided double-arc technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effect of improving efficiency, reducing welding deformation, and reducing processes

Active Publication Date: 2018-07-20
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The double-sided double-arc welding technology with penetration control can directly complete the welding of 5-10mm composite panels at one time. There is no relevant research report in the industry

Method used

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  • Double-side double-arc vertical welding fusion depth control device and welding method thereof
  • Double-side double-arc vertical welding fusion depth control device and welding method thereof
  • Double-side double-arc vertical welding fusion depth control device and welding method thereof

Examples

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Effect test

Embodiment 1

[0051] The 10mm titanium-steel composite plate is butted, the steel is the base layer, the thickness is 8mm, the titanium is the cladding layer, the thickness is 2mm, the groove shape is as follows figure 1, the seams are 4mm apart. The self-fluxing tungsten argon arc welding process is used for welding. The electrode is made of cerium tungsten. The diameter of the tungsten pole is 3.2mm. The distance between the tungsten pole A and the tungsten pole B on both sides is 3mm from the surface of the workpiece. , The gas flow rate on the titanium side is 10L / min, and the gas flow rate on the steel side is 12L / min.

[0052] By querying the relationship model database between penetration depth and voltage, the standard voltage value of penetration 8mm steel is 15V, and that of penetration 2mm titanium plate is 9V. During welding, the voltage detection device obtains the voltage of 11.8V on both sides of the composite board during the arcing stage. The molten pool in the arcing sect...

Embodiment 2

[0054] The 10mm stainless steel-steel composite panels are butted, the steel is the base layer, the thickness is 8mm, the stainless steel is the cladding layer, the thickness is 2mm, the groove shape is as follows figure 1 , the seams are 4mm apart. The self-fluxing tungsten argon arc welding process is used for welding. The electrode is made of cerium tungsten. The diameter of the tungsten pole is 3.2mm. The distance between the tungsten pole A and the tungsten pole B on both sides is 3mm from the surface of the workpiece. The gas flow rate on the stainless steel side is 12L / min, and the gas flow rate on the steel side is 15L / min.

[0055] By querying the relationship model database between penetration depth and voltage, the standard voltage value of penetration 8mm steel is 15V, and that of penetration 2mm stainless steel plate is 8V. During welding, the voltage detection device obtains 11.8V on both sides of the composite plate during the arcing stage. After the welding to...

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Abstract

The invention discloses a double-side double-arc vertical welding fusion depth control device and method for a composite board. The double-side double-arc vertical welding fusion depth control devicecomprises dual robots, a welding power supply, an arc-length control device, an industrial personal computer and the like. The fusion depth control method mainly adopts the combination of double-sideddouble-arc vertical welding and a self-developed arc-length control device, electric-arc parameters on both sides are independently adjusted in the welding process, voltage data are collected and adjusted through the arc-length control device, and accurate control over the fusion depth on the front side and the back side of the composite board is realized. Through the double-side double-arc vertical welding fusion depth control method, one-time through welding on 5-10mm composite boards made of titanium-steel, stainless steel-steel and the like can be realized, adding of a transition layer isnot needed, the efficiency is improved, the welding deformation is small, and the generation of intermetallic compounds is reduced.

Description

technical field [0001] The invention relates to a composite plate welding method, in particular to a double-sided double-arc vertical welding penetration control device and a welding method thereof. Background technique [0002] Since the base carbon steel or copper does not contain alloying elements Cr and Ni, the stainless steel clad plate has a dilution effect on the alloying elements Cr and Ni in the weld metal during fusion welding, which reduces the content of austenite-forming elements Cr and Ni in the weld. The martensitic hardened structure is formed in the weld metal, which is prone to cracks, thereby deteriorating the quality of the welded joint. Therefore, for the welding of stainless steel clad plates, on the one hand, welding materials with high Cr and Ni content should be selected, and on the other hand, appropriate welding methods and welding processes should be selected. [0003] When the titanium-steel clad plate is directly welded, due to the large differ...

Claims

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Application Information

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IPC IPC(8): B23K9/095B23K9/173B23K9/235
CPCB23K9/095B23K9/173B23K9/235
Inventor 冯曰海李宇昕王克鸿强伟张德库黄俊周琦余进
Owner NANJING UNIV OF SCI & TECH
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