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Arc welding method and arc welding system

An arc welding method, arc welding technology, applied in the direction of arc welding equipment, welding equipment, manufacturing tools, etc., capable of solving problems such as inadequacy, deterioration of weld bead B appearance, deterioration, etc.

Inactive Publication Date: 2011-04-27
DAIHEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deterioration of the appearance of weld bead B if arc interruptions occur frequently
thus, Figure 10 The method shown in is not sufficient to prevent deterioration of the appearance of weld bead B

Method used

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  • Arc welding method and arc welding system
  • Arc welding method and arc welding system
  • Arc welding method and arc welding system

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Embodiment Construction

[0046] Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.

[0047] figure 1 It is a figure which shows the structure of an example of the welding system concerning 1st Embodiment of this invention.

[0048] figure 1 The illustrated welding system A includes a welding robot 1 , a robot controller 2 , and a welding power supply unit 3 . The welding robot 1 automatically performs arc welding on the welding base material W, for example. The welding robot 1 has a base member 11 , a plurality of arms 12 , a plurality of motors 13 , a welding torch 14 , a wire feeder 16 and a coiled liner 19 .

[0049] The base member 11 is fixed to an appropriate place such as the ground. Each arm 12 is connected to the base member 11 via a shaft.

[0050] The welding torch 14 is provided at the tip of an arm 12 a provided on the frontmost side of the welding robot 1 . The welding torch 14 guides a welding wire 15 having a diame...

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Abstract

The present invention provides an arc welding method which can form more beautiful scale-shaped weld bead and an arc welding system. The arc welding method comprises the following steps: a first step of generating an arc (A) and transferring a molten drop through a welding current, wherein an average value of a an absolute value between a consumable electrode (15) and a welding base metal (W) is a first value; a second step of causing a welding current flow with a mode that the average value of the absolute value is a second value which is smaller than the first value for continuing the generation state of the arc (A), and performing the first step and the second step repeatedly. In the arc welding method, a feeding speed (Vf) is increased when a welding voltage (Vw) between the consumable electrode (15) and the welding base metal (W) is larger than a preset welding voltage (Vst), and the feeding speed (Vf) is reduced when the welding voltage (Vw) is smaller than the reference welding voltage (Vst). Through the structure, orderless welding bead appearance caused by overlarge welding voltage and arc disappearance caused by oversmall welding voltage can be prevented.

Description

technical field [0001] The invention relates to an arc welding method and an arc welding system. Background technique [0002] Figure 7 It is a figure which shows an example of the conventional welding system. The welding system 91 in this figure performs welding using a so-called stitch pulse spot welding method. The so-called stitch pulse spot welding method is a welding method that easily suppresses the thermal influence on the base metal by controlling heat input and cooling during welding. According to this stitch pulse spot welding method, compared with the conventional thin plate welding, the welding appearance can be improved and the amount of welding deformation can be reduced (see, for example, Patent Document 1). [0003] The manipulator 9M automatically performs arc welding on the workpiece 9W, and is composed of an upper arm 93 , a lower arm 94 , and a wrist 95 , and a plurality of servo motors (not shown) for rotationally driving them. [0004] The arc weld...

Claims

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Application Information

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IPC IPC(8): B23K9/12B23K9/073B23K9/173B23K9/10
Inventor 藤井督士高桥宪人刘忠杰广田周吾
Owner DAIHEN CORP
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