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Welding power supply system

A welding power source and welding system technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effect of shape stability and arc depletion suppression

Pending Publication Date: 2022-03-08
DAIHEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the end of submerged arc welding, if the output of the welding current is stopped at the same time as the feeding of the welding wire is stopped, the adhesion phenomenon will occur in which the tip of the welding wire traveling due to inertia comes into contact with the workpiece to be welded.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach 〕

[0024] figure 1 It is a figure for demonstrating the welding system concerning 1st Embodiment. (a) of the figure is a block diagram showing the overall configuration of the welding system. (b) of this figure is a block diagram which shows the internal structure of a welding power supply apparatus.

[0025] Welding system A1 is a welding system for performing submerged arc welding. like figure 1 As shown in (a), the welding system A1 includes a control device 1 , a welding power supply device 2 , a carriage 4 , a wire feeding device 5 , a welding pad 6 , a spreading device 7 , and an electrode 8 . The welding system A1 spreads the granular flux stored in the stocker of the spreading device 7 while moving the trolley 4 along the welding line of the workpiece W, and feeds the welding wire into the welding wire feeding device 5 . in flux. The welding wire is supplied from the bonding pad 6 . The welding power supply device 2 converts AC power supplied from a commercial power...

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Abstract

The invention provides a welding power supply system for submerged arc welding, which can stabilize the shape of the front end of an electrode after welding. A welding system (A1) for performing submerged arc welding is provided with: a welding power supply device (2) which is provided with an inverter circuit (25) and supplies power; a welding wire feeding device (5) for feeding a welding wire; and a control device (1) for controlling the welding power supply device (2) and the welding wire feeding device (5). The control device (1) enables the welding power supply device (2) to output alternating current during welding, enables the welding wire feeding device (5) to stop feeding of the welding wire at the end of welding, enables the welding power supply device (2) to output end current serving as direct current, and sets an end current period from the start of output of the end current to the stop of the output of the end current.

Description

technical field [0001] The present invention relates to a welding power supply system for submerged arc welding. Background technique [0002] Submerged arc welding has long been known. In submerged arc welding, granular flux is sprayed on the object to be welded, a welding wire is fed into the flux, and an arc is generated between the tip of the wire and the object to be welded to perform welding. In submerged arc welding, thick plates can be efficiently welded by passing a large current through a large-diameter welding wire. Patent Document 1 discloses an example of a submerged arc welding apparatus for performing submerged arc welding. [0003] AC power is supplied from the welding power supply unit between the tip of the welding wire (hereinafter referred to as "electrode") and the object to be welded. The welding power source device includes a transformer, and outputs AC power obtained by transforming AC power input from a commercial power supply with the transformer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10B23K9/18B23K9/133
CPCB23K9/1043B23K9/18B23K9/133B23K9/1006B23K9/186
Inventor 楠桥悠真永见一敏宫岛雄一成定佑树坂口善规
Owner DAIHEN CORP
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