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Manual argon-arc welding process of tungsten electrode

A technology of argon tungsten arc welding and welding technology, which is applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as uneven residence time of the arc, high requirements for welder skills, and unstable arc length, etc. The effect of stable quality, high weld seam quality and easy grasp

Active Publication Date: 2012-07-04
江苏利柏特股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual welding, the arc stays on both sides of the groove unevenly, and the arc length is unstable, resulting in defects such as poor appearance, lack of fusion, pores and even incomplete penetration of the root. Generally, it requires high welder skills
Unstable welding quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The present invention will be described in further detail below through specific examples.

[0034] A manual tungsten argon arc welding welding process, comprising the following steps:

[0035] A. Preparation before welding, including the following sub-steps:

[0036] a1) Selection tool: choose a 75° argon arc welding torch with a diameter of 40-50mm 2 The handle wire is 3-4m. If the handle wire is too thin, the rated current cannot be met, and if it is too thick, the operation of the argon arc welding torch will not be smooth. Cerium tungsten electrode with a diameter of 2.0mm or 2.4mm, the tip of the cerium tungsten electrode is processed into a truncated conical shape with a taper of 35°-45°, and the diameter of the small circle of the truncated cone is 0.8-1.0mm. The protruding length of the mouth is 6-8mm;

[0037] a2) Acceptance inspection of tools: Check whether the DC argon arc welding torch and the measuring instruments of the argon gas flowmeter have been c...

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Abstract

The invention discloses a manual argon-arc welding process of a tungsten electrode. According to the welding process, a porcelain mouth of an argon-arc welding torque is supported on a bevel for forming a fulcrum, and by adopting the steps of reasonably setting a gap and welding, a welder is easy to practice the amplitude, the frequency and the advance speed of a circular arc motion of the wrist till being skilled and can further uniformly control the retention time of an electric arc on the two sides of the bevel, uniformly control the length of the electric arc, uniformly control welding speed and effectively ensure linear energy input, so that the welding process has the advantages of aesthetic formed weld joint, uniform weld line, low heat input, compact tissue, stable quality of the weld joint and high quality of the weld joint on the inner pipe of a pipe.

Description

technical field [0001] The invention relates to a welding process, in particular to a manual tungsten argon arc welding process. Background technique [0002] The internal cleaning requirements of the process pipeline are relatively high. Manual arc welding, single-sided welding and double-sided forming technology can guarantee the welding quality, but the slag on the root surface cannot be completely removed, which cannot meet the requirements for cleanliness inside the process pipeline, and the scope of application is limited. And argon tungsten arc welding has become the preferred welding process method for bottom welding of process pipelines because it has no slag. The traditional manual argon tungsten arc welding group has a small gap or even no gap. Welding requires the welder to keep the arc length stable, straight forward and straight. In actual welding, the arc stays on both sides of the groove unevenly, and the arc length is unstable, resulting in defects such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/16B23K9/235
Inventor 霍吉良陈杰恒方战华
Owner 江苏利柏特股份有限公司
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