Welding torch for milling head sleeve and tungsten-pole inert gas protection welding

A technology of tungsten inert gas and rolling head, which is applied in the direction of protective supporting device, electrode characteristics, welding equipment, etc., and can solve problems such as sintering, allowable current and usage rate limitation, arc instability, etc.

Active Publication Date: 2005-07-20
DAIHEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistance value of steel components is higher than that of copper alloys. Therefore, if the welding current exceeds 100A, the electrode rolling head, rolling head sleeve and electrode 4 will break down at the p...

Method used

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  • Welding torch for milling head sleeve and tungsten-pole inert gas protection welding
  • Welding torch for milling head sleeve and tungsten-pole inert gas protection welding

Examples

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Comparison scheme
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Embodiment Construction

[0033] Embodiments of the invention will be described based on examples with reference to the drawings.

[0034] Fig. 1 is a partial sectional view of the tungsten inert gas shielded welding torch of the present invention. In this figure, functions other than the nip bushing 9 are the same as those of the prior art shown in FIG. 2 , and thus the same reference numerals are attached, and descriptions thereof are omitted.

[0035] In FIG. 1 , the collet sleeve 9 is composed of a cylindrical insert member 91 attached to the inside of the front end portion including the pointed tapered portion 9 a and the rest of the collet sleeve body 92 . The embedded member 91 is fixed on the front end of the sleeve body 92 by crimping, pressing or welding.

[0036] In addition, the insert member 91 has an electrode penetration insertion hole 91a in the axial core, and is formed of a conductive metal having high electrical conductivity, impact resistance, and wear resistance, such as a copper ...

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PUM

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Abstract

To provide a TIG (inert gas shielded tungsten arc) welding torch in which the seizure in the contact faces between a collet and a collet body is prevented to facilitate the exchange of an electrode, the phenomenon that arc heat conducts from the electrode to a torch body via the collet body is suppressed and large welding current can be made to flow, and whose using rate can be increased. The TIG welding torch is provided with a torch body, a collet supporting an electrode located at the center of the torch body, and a collet body supported by a metallic member in contact with the inside thereof and supporting the collet in contact therewith. The collet body is composed of a cylindrical insert member fitted to the tip part of the collet body and having a receiving hole of the electrode at an axial core part, and the balance collet body shell having an inserting hole of the collet. The insert member is formed of an electrically conductive metal having high electrical conductivity and having impact resistance and wear resistance. The collet body shell is formed of an electrically conductive metal having low thermal conductivity.

Description

technical field [0001] The present invention relates to a collet body for improving tungsten inert gas shielded welding and a tungsten inert gas shielded welding torch using it. Background technique [0002] [Prior Art 1] [0003] Referring to FIG. 2 , the tungsten inert gas shielded welding torch of prior art 1 will be described. Fig. 2 is a partial sectional view of a tungsten inert gas shielded welding torch in the prior art. In this figure, a torch body 1 is formed of a substantially cylindrical metal member 1a and a substantially cylindrical insulating member 1b surrounding the metal member 1a. The handle part 2 is a part held by the operator, and is attached to the side surface of the torch body 1, and the periphery of the handle part 2 is formed of an insulating member. [0004] The electrode collet (collet) 3 is provided with an electrode through insertion hole 3a for passing through the non-consumable electrode 4 (tungsten electrode) at the shaft core, and a poin...

Claims

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Application Information

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IPC IPC(8): B23K9/29B23K9/16
Inventor 多田俊夫内田雅信平见正行
Owner DAIHEN CORP
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