JPS6366576U

JPS6366576U -

Info

Publication number: JPS6366576U
Application number: JP16053986U
Authority: JP
Priority date: 1986-10-20
Filing date: 1986-10-20
Publication date: 1988-05-02

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る自動ＭＩＧ超
狭開先溶接トーチの構成を示す断面で、ａ図は正
面図、ｂ図は側面図、第２図は本実施例に係る第
１図―矢視の平面図、第３図は本実施例に係
る第１図―矢視の平面図、第４図は本実施例
に係る超狭開先形状を示す断面で、ａ図はルート
フエースを有する開先形状を、ｂ図は裏当金を有
する開先形状の実施例、第５図は本実施例に係る
自動ＭＩＧ超狭開先溶接トーチを適用した溶接状
態の断面を示し、ａ図はその正面図、ｂ図はその
側面図、第６図は本実施例に係る超狭開先溶接の
積層断面図、第７図は従来の溶接ノズルを適用し
た溶接状態の断面図、第８図は従来の溶接継手開
先形状の断面を示し、ａ図は裏当金を有するＶ形
開先、ｂ図はルートフエースを有したＵ形開先、
第９図は従来の開先溶接の積層断面図である。次
にここで用いる各図の符号は本考案及び従来と対
応して同一としている。１……超狭開先用ノズル、２……本考案のコン
タクトチツプ、３……従来のガスノズル、４……
従来のコンタクトチツプ、５……母材、６……溶
接ワイヤ、７……シールドガス、８……溶着金属
、９……アーク。 Fig. 1 is a cross section showing the configuration of an automatic MIG ultra-narrow gap welding torch according to an embodiment of the present invention, in which Fig. a is a front view, Fig. b is a side view, and Fig. 2 is a Figure 3 is a plan view taken from the direction of arrows in Figure 1 according to this embodiment, Figure 4 is a cross section showing the ultra-narrow groove shape according to this example, and Figure a is a root view. Figure b shows an example of a groove shape with a backing metal, and Figure 5 shows a cross section of a welded state using the automatic MIG ultra-narrow groove welding torch according to this example. Figure a is its front view, Figure b is its side view, Figure 6 is a laminated cross-sectional view of ultra-narrow groove welding according to this embodiment, Figure 7 is a cross-sectional view of a welded state using a conventional welding nozzle, Figure 8 shows cross sections of conventional welded joint groove shapes, where figure a is a V-shaped groove with a backing metal, figure b is a U-shaped groove with a root face,
FIG. 9 is a laminated cross-sectional view of conventional groove welding. Next, the reference numerals used in each figure used herein are the same corresponding to the present invention and the conventional art. 1... Nozzle for ultra-narrow gap, 2... Contact chip of the present invention, 3... Conventional gas nozzle, 4...
Conventional contact chip, 5... base metal, 6... welding wire, 7... shielding gas, 8... welding metal, 9... arc.

Claims

[Scope of utility model registration request]

A welding torch used for automatic MIG welding includes a contact tip that has a through hole for feeding a welding wire and can be energized by feeding the welding wire into the through hole, and the contact tip can be attached to a hollow part. , the inner cylinder has a welding wire feed through hole coaxial with the welding wire feed through hole of the contact chip, and a cavity formed surrounding the inner cylinder is formed to serve as a gas flow hole. An automatic MIG ultra-narrow gap welding torch, characterized in that the outer cylinder is provided with a welding torch tip nozzle part formed integrally with the inner cylinder in a rectangular shape using an insulating material.