Arc Welding Method And Arc Welding System

An arc welding method and arc welding technology, applied in arc welding equipment, welding equipment, welding accessories, etc., can solve problems such as short circuit between consumable electrodes and base metal, and weld shape damage

Active Publication Date: 2012-03-14
DAIHEN CORP
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this welding method, there is a possibility that a part of the consumable electrode becomes a droplet during the duration of the arc, and an unexpected short circuit occurs between the consumable electrode and the base metal.
If a short circuit occurs during the duration of the arc, the shape of the formed weld may be destroyed

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

[0020] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[0021] figure 1 It is a figure which shows the structure of an example of the welding system concerning embodiment of this invention.

[0022] The arc welding system A1 of the present embodiment includes a welding robot 1 , a robot control device 2 , and a welding power source device 3 . The welding robot 1 automatically performs arc welding on the base material W, for example. The welding robot 1 includes a base part 11 , a plurality of arms 12 , a plurality of motors 13 , a welding torch 14 , a wire feeding device 16 , and a linear coil 19 .

[0023] 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. The welding torch 14 guides the consumable electrode 15 (welding wire) to a predetermined position near the base material W. As shown in FIG. A shielding gas nozzle (not sho...

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Abstract

The invention provides an arc welding method and an arc welding system. The arc welding method repeatedly includes unit welding periods of a droplet transfer period, an arc duration preparation period (T2) and an arc duration period (T3). In the droplet transfer period, welding currents are made to flow through in a method of determining a time average value of an absolute value to be a first value while a maximum value of the absolute value to be a second value between a consumption electrode and a base material, thereby making the droplet transferred to the base material from the consumption electrode. And in the period T2, the welding currents are made to flow through in a method that the maximum value of the absolute value is larger than the second value. And in the period T3, the welding currents are made to flow through in a method that the time average value of the absolute value is smaller than the first value, thereby generating arc duration between the consumption electrode and the base material. Thus, short circuit of the consumption electrode and base material in the arc duration period can be inhibited.

Description

technical field [0001] The present invention relates to an arc welding method and an arc welding system. Background technique [0002] A welding method in which a unit welding period consisting of a droplet transfer period and an arc continuation period is repeated is conventionally known (for example, refer to Patent Document 1). Such a welding method is called a stitch pulse welding method. During the droplet transfer period of this welding method, the welding torch holding the consumable electrode is stopped relative to the base metal. Then, by passing a relatively large welding current between the consumable electrode and the base material, an arc is generated between the consumable electrode and the base material, and a droplet is transferred from the consumable electrode to the base material. Furthermore, the consumable electrode is fed from the torch at a greater feed rate during the droplet transfer period. On the other hand, during the duration of the arc, the we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K9/10B23K9/32
Inventor 刘忠杰
Owner DAIHEN CORP
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