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A Submerged Biased Arc Welding Method

A welding method and offset arc technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of high assembly precision of weldments, inability to perform bottom welding, and unsuitable for welding thin plates, etc., and achieve easy short arc welding. Welding, not easy to weld through or collapse, the effect of improving the working environment

Inactive Publication Date: 2011-11-30
承德石油高等专科学校
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The submerged arc welding method relies on machinery to automatically complete the welding, which has poor flexibility; the welding current is large and the power is high, which is not suitable for welding thin plates and cannot be used for backing welding; and in order to ensure the welding quality, the assembly accuracy of the weldments is high, so it is not suitable Weld short welds, not to mention welding in narrow spaces

Method used

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  • A Submerged Biased Arc Welding Method
  • A Submerged Biased Arc Welding Method
  • A Submerged Biased Arc Welding Method

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] The following examples are non-limiting examples of the invention.

[0041] like Figure 7 As shown, the welded joint 72 positioned to be welded is placed horizontally. In this embodiment, the weldment 72 to be welded is a Q235 low-carbon steel plate with a thickness of 10 mm or 12 mm, and the length of the weld seam is 300 mm. According to the performance requirements of the material joint of the weldment 72, and according to the welding material selection principle of general welding technology, the welding rod of model E4303 is selected, and its diameter can be Φ3.2mm, Φ4.0mm or Φ5.0mm.

[0042] The welding rod 74 is placed close to the welding gap along the top of the welding gap, the placement direction of the welding rod 74 is the extension direction of the welding gap, and the coating surface of the welding rod 74 is fully cont...

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Abstract

The submerged partial arc welding method of the present invention comprises the following steps: 1) arranging the weldment to be welded; 2) placing the electrode on the top of the welding hole, and the placement direction of the electrode is parallel to the extending direction of the welding hole; 3) placing The welding rod and the weldment to be welded are respectively connected to the power supply; 4) placing flux on the welding rod; 5) using an arc strike conductor to contact the welding rod and the weldment to perform short-circuit arc striking. The welding process is automatically completed after artificial submerged arc and arc ignition. When welding, the arc is deflected to the side of the electrode to form a deflected arc, which greatly weakens the effect of electromagnetic static pressure and plasma flow force on the molten pool, and is not easy to weld through or collapse. The welding method has simple and flexible operation, stable arc length, good formability, low labor intensity, fast welding speed, high production efficiency, can be welded in a narrow space and is easy to remove slag.

Description

technical field [0001] The invention belongs to the technical field of welding, and in particular relates to a submerged partial arc welding method. Background technique [0002] As the most common welding methods, electrode arc welding and submerged arc welding are widely used in engineering. [0003] Electrode arc welding is an arc welding method in which electrodes are manually manipulated for welding. like figure 1 As shown, when performing electrode arc welding, the high temperature generated by the arc burning between the end of the electrode 11 and the weldment 19 makes the electrode coating, the welding core and the weldment partially melt, and the end of the molten welding core quickly forms a small The metal droplet 12 transitions to the partially melted weldment surface through the arc column, and fuses together to form a molten pool 15 . The shielding gas 13 and slag 16 produced during the melting of the coating not only isolate the molten pool 15 from the air...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/18
Inventor 许利民石泉沾
Owner 承德石油高等专科学校
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