Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-electrode arc welding device and two-electrode arc welding method

An arc welding method and arc welding technology, which is applied in arc welding equipment, welding equipment, plasma welding equipment, etc., can solve problems such as undiscovered, and achieve the effect of improving cladding performance

Inactive Publication Date: 2011-07-20
HONDA MOTOR CO LTD
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no method to solve this problem has been found

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-electrode arc welding device and two-electrode arc welding method
  • Two-electrode arc welding device and two-electrode arc welding method
  • Two-electrode arc welding device and two-electrode arc welding method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0051] The two-electrode arc welding device 1 includes a power supply device 11 , an output terminal 12 for positive electrodes, an output terminal 13 for negative electrodes, an arc torch 14 for positive electrodes, and an arc torch 15 for negative electrodes.

[0052] Also, in figure 1 In FIG. 2 , for the sake of brief description, only the front end portion in the vicinity of the constraining nozzle is shown for the arc torch 14 for positive electrode and the arc torch 15 for negative electrode, and the other parts are omitted from illustration. The omission of this illustration will be described later figure 2 with image 3 in the same way.

[0053] The power supply device 11 functions as a welding power source of the two-electrode arc welding device 1, and outputs a low-potential voltage (hereinafter referred to as "positive voltage") lower than that of the base material 21 from the output terminal 12 for the positive electrode, and outputs it from the output terminal ...

no. 2 Embodiment approach

[0086] Here, the distance between the electrode tabs 41b of the positive arc torch 14 and the electrode tabs 41b of the negative arc torch 15 is used to allow the preceding negative arc torch 15 to perform the preheating function of the base material 21 , the minimum distance necessary to increase the cladding depth to the desired depth exists. Hereinafter, this distance is referred to as "the cladding depth increase distance".

[0087] Such a cladding depth rise distance is often shorter than the critical distance between arcs under the conditions of the first embodiment. At this time, since the inter-arc distance L1 in the first embodiment is equal to or greater than the inter-arc critical distance under the conditions of the first embodiment, it exceeds the cladding depth increase distance.

[0088] Therefore, in the two-electrode arc welding apparatus of the first embodiment, the function of preheating the base material 21 by the preceding negative electrode arc welding t...

no. 3 Embodiment approach

[0102] As described above, the inter-arc distance L1 in the second embodiment can be shortened more than the inter-arc distance L1 in the first embodiment, and the preheating function of the preceding negative electrode arc torch 15 can be exhibited by the shortened amount.

[0103] However, if figure 2 As shown, the guide gas supplied by the gas supply unit 42 is ejected from the nozzle hole 44 at a high speed, so that the plasmaized (or easily plasmaized) gas 51 (hereinafter referred to as plasma gas 51 ) easily fills the surface of the base material 21 .

[0104] As a result, plasma gas 51 may pass between insulator 16 and base material 21 . At this time, since the plasma gas 51 has high conductivity, an arc may be generated between the positive and negative electrodes.

[0105] Therefore, in the second embodiment, it is necessary to reduce the flow rate of the guide gas used as the plasma gas 51 so as not to generate an arc between the positive and negative electrodes. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A two-electrode arc welding device and two-electrode arc welding method are provided for performing welding with improved penetration performance using two non-consumable electrodes. In a two-electrode arc welding device 1, a power-supply unit 11 outputs a straight-polarity voltage and a reverse-polarity voltage, which has a different electrical potential than the straight-polarity voltage. The straight-polarity voltage output from the power-supply unit 11 is applied to a non-consumable electrode 41 of a straight-polarity arc torch 14, whereby an arc is formed. The reverse-polarity voltage output from the power-supply unit 11 is applied to a non-consumable electrode 41 of a straight-polarity arc torch 15, whereby an arc is formed. An arc spacing distance L1, which is a distance between the ends of both the straight-polarity arc torch 14 and the reverse-polarity arc torch 15, is set to be at least a minimum distance at which an arc will not occur therebetween (arc spacing critical distance).

Description

technical field [0001] The invention relates to a double-electrode arc welding device and a double-electrode arc welding method for welding base metals using two electrodes. Specifically, it relates to a twin-electrode arc welding device and a twin-electrode arc welding method capable of performing welding with improved cladding performance using two non-consumable electrodes. Background technique [0002] Conventionally, an arc welding device widely used (hereinafter referred to as "existing single-electrode arc welding device") welds a base metal as follows. A non-consumable electrode (such as a TIG welding torch) at one end connected to a welding power source An arc is generated between the base material connected to the other end of the welding power source, and in this state, the non-consumable electrode is moved in a predetermined direction. [0003] In addition, Patent Document 1 discloses an arc welding device (hereinafter referred to as "arc welding device of Paten...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/067B23K9/16
CPCB23K9/1675B23K10/02B23K9/1068
Inventor 藤内启辉掘向俊之儿玉哲也
Owner HONDA MOTOR CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com