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Electric arc welder and electrode holder thereof

An arc welding machine and arc welding technology, which is applied in the field of arc welding machines and arc welding torches, can solve problems such as maintenance, and achieve the effects of constant welding wire melting, constant welding size, and low deformation of welded parts

Inactive Publication Date: 2005-06-01
LINCOLN GLOBAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention maintains a stable arc length in constant voltage welding operations or pulsed welding operations without the disadvantages associated with existing control processes

Method used

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  • Electric arc welder and electrode holder thereof
  • Electric arc welder and electrode holder thereof
  • Electric arc welder and electrode holder thereof

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Embodiment Construction

[0021]With reference to accompanying drawing, wherein accompanying drawing is only in order to show the preferred embodiment of the present invention and is not in order to limit the present invention, Fig. 1 has shown to welding torch or welding torch B provides welding current so that welding torch can carry out the constant voltage type arc welding of welding operation Machine A. A consumable welding electrode or wire 10 supplied by a standard spool 12 and directed through a torch or torch B towards a workpiece WP is melted at the arc P. As the arc melts the end of the welding wire 10, the molten metal is transformed into a weld bead on the workpiece WP. The power supply PS is not part of the invention and is provided according to standard construction. In the invention shown, the power supply is a commutator; however, conventional non-commutator power supplies could also be used. A three-phase input 20 drives an input rectifier 22 to produce a DC voltage between leads 24...

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PUM

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Abstract

In an electric arc welder for creating an arc welding process between a consumable electrode advancing through a contact tip and a workpiece, the welder including a power supply to create an arc current and arc voltage and having a first lead connected to the contact tip and a second lead connected to the workpiece, the improvement comprising dividing the contact tip into an upper tip section and a lower tip section with an insulator electrically isolating the sections, a first switch selectively shiftable to a conductive state connecting one of the power supply leads to said upper tip section, a second switch selectively shiftable to a conductive state connecting the one lead to the lower tip section and a switch operating network creating a first switch signal to shift the first switch to its conductive state and / or a second switch signal to shift the second switch to its conductive state to control the effective CTWD of the arc welding process. <IMAGE>

Description

technical field [0001] The invention relates to arc welding technology, in particular to an arc welding machine and a welding torch specially used for arc welding. Background technique [0002] Gas metal arc welding (GMAW) involves applying electrical current to a contact tip in a welding torch through which a consumable electrode or wire is passed as it moves toward a workpiece. According to standard welding techniques, the arc of the welding process is created by the current flowing through the contact tip to the welding wire. The power source, usually a high-speed switching commutator, generates the welding current and is usually adjusted to the arc voltage to maintain a constant arc length in constant voltage welding or pulse welding. The welding electrode or wire moving towards the workpiece through the contact tip is electrically connected to the workpiece by an arc having a length which should have a given length for the particular process. The gap between the conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/08B23K9/095B23K9/10B23K9/26B23K9/00B23K9/073B23K9/09B23K9/127B23K9/29H02M9/00
CPCB23K9/0735B23K9/092B23K9/093B23K9/095B23K9/1062B23K9/00
Inventor 克里斯托弗·赫苏
Owner LINCOLN GLOBAL INC
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