CN-121988841-A - Longitudinal double tungsten electrode argon arc welding machine head

CN121988841ACN 121988841 ACN121988841 ACN 121988841ACN-121988841-A

Abstract

A longitudinal double tungsten electrode argon arc welding machine head. The welding gun comprises welding guns, wire feeding guns and welding wires, wherein the two welding guns are fixedly connected with a connecting frame, tungsten electrodes of a first welding gun assembly and a second welding gun assembly are sequentially arranged in the longitudinal direction along the center of a welding seam of a workpiece, the first welding gun assembly and the second welding gun assembly are symmetrically arranged on two sides of a vertical plane of the welding seam of the workpiece, an included angle of 35-45 degrees is formed between the tungsten electrodes of the first welding gun and the second welding gun, a bottom plate of the connecting frame is longitudinally arranged along the center of the welding seam of the workpiece, and the wire feeding guns, the first welding gun assembly and the second welding gun assembly are arranged below the bottom plate. The welding wire welding device has the advantages of reasonable design and compact structure, reduces arc pressure compared with the traditional TIG welding by arranging the longitudinal double-tungsten-electrode hot wire argon arc welding, and particularly improves welding wire cladding speed and welding efficiency and simultaneously increases welding seam width, reduces penetration and welding seam dilution rate when adopting high-current high-speed welding, ensures good welding seam forming and ensures corrosion resistance of a corrosion-resistant alloy surfacing layer.

Inventors

ZHAO BO
Li Diepeng
CHEN XIAOWEI
ZHANG LEI
HOU SHULIN
LI ZHIHUA
LI TAO
WANG XUESHI
ZHAO YUYUE
WANG BIN

Assignees

中国石油集团渤海石油装备制造有限公司
中国石油天然气集团有限公司

Dates

Publication Date: 20260508
Application Date: 20241107

Claims (10)

1. The utility model provides a two tungsten utmost point argon arc welding machine heads of column, includes welder, wire feed rifle, welding wire, characterized by: the two welding guns are fixedly connected with the connecting frame, the tungsten electrode of the first welding gun assembly and the tungsten electrode of the second welding gun assembly are longitudinally and sequentially arranged along the center of a welding seam of the workpiece, the first welding gun assembly and the second welding gun assembly are symmetrically arranged on two sides of a vertical plane of the welding seam of the workpiece, and an included angle of 35-45 degrees is formed between the tungsten electrodes of the first welding gun and the second welding gun.
2. The tandem double tungsten electrode argon arc welding machine head according to claim 1, wherein: the bottom plate of the connecting frame is longitudinally arranged along the center of a welding seam of the workpiece, and a wire feeding gun, a first welding gun assembly and a second welding gun assembly are arranged below the bottom plate.
3. The tandem double tungsten electrode argon arc welding head as set forth in claim 2, wherein: the roof and the bottom plate of link pass through curb plate fixed connection, roof and frame fixed connection.
4. A tandem double tungsten electrode argon arc welding head as claimed in claim 3, wherein: The first welding gun assembly is fixedly connected with the bottom plate through a gun handle clamping assembly and a gun neck clamping assembly; and the second welding gun assembly is fixedly connected with the bottom plate through a gun neck clamping assembly.
5. The tandem double tungsten electrode argon arc welding machine head according to claim 4, wherein: And an upper pressing plate and a lower pressing plate of the gun handle clamping assembly are connected through bolts I to fix the gun handle of the first welding gun assembly.
6. The tandem double tungsten electrode argon arc welding machine head according to claim 5, wherein: the wire feeding gun is arranged at the lower end part of the lower pressing plate.
7. The tandem double tungsten electrode argon arc welding machine head as set forth in claim 6, wherein: An insulating sleeve is arranged between the wire feeding gun and the lower pressing plate.
8. The tandem double tungsten electrode argon arc welding machine head according to claim 4, wherein: And the upper clamping block and the lower clamping block of the gun neck clamping assembly are fixedly connected with the bottom plate through bolts II, so that the gun necks of the welding guns of the first welding gun assembly and the second welding gun assembly are fixed.
9. The tandem double tungsten electrode argon arc welding machine head of claim 8, wherein the mounting hole of the gun neck clamping assembly for mounting the second welding gun assembly on the bottom plate is a slotted hole.
10. The tandem double tungsten electrode argon arc welding machine head according to claim 1, wherein: One pole of the preheating welding wire power supply output cable is connected with the connecting frame, and the other pole is connected with the workpiece.

Description

Longitudinal double tungsten electrode argon arc welding machine head Technical Field The invention relates to a tungsten electrode argon arc welding machine head, in particular to a longitudinal double-tungsten electrode argon arc welding machine head, and belongs to the technical field of mechanical engineering welding. Background The argon tungsten-arc welding method has the advantages of high welding quality, stable process and excellent weld formation, but has the defects of large penetration, high dilution rate and the like when the corrosion-resistant alloy surface overlaying and the bimetal composite plate are welded under high current, so that the corrosion resistance of a corrosion-resistant layer is not qualified, the welding efficiency is low by adopting a high-current single-tungsten argon-arc welding process, the welding is carried out by adopting a double-tungsten argon-arc welding machine head, the penetration can be reduced, the dilution rate is reduced, and the problems of complex structure, large volume, high manufacturing cost, high maintenance cost and the like of the double-tungsten argon-arc welding machine head product in the market at present are solved. Disclosure of Invention In order to overcome the defects of the existing corrosion-resistant alloy surface overlaying, a double-metal composite plate corrosion-resistant alloy transition layer and a composite layer which are welded by adopting argon tungsten-arc welding, the invention provides a longitudinal double-tungsten argon-arc welding machine head. The technical scheme includes that the longitudinal double-tungsten argon arc welding machine head comprises welding guns, wire feeding guns and welding wires, wherein the two welding guns are fixedly connected with a connecting frame, tungsten electrodes of a first welding gun assembly and tungsten electrodes of a second welding gun assembly are sequentially arranged longitudinally along the center of a welding seam of a workpiece, the first welding gun assembly and the second welding gun assembly are symmetrically arranged on two sides of a vertical plane of the welding seam of the workpiece, and an included angle of 35-45 degrees is formed between the tungsten electrodes of the first welding gun and the tungsten electrodes of the second welding gun. The bottom plate of the connecting frame is longitudinally arranged along the center of a welding seam of the workpiece, and a wire feeding gun, a first welding gun assembly and a second welding gun assembly are arranged below the bottom plate. The roof and the bottom plate of link pass through curb plate fixed connection, roof and frame fixed connection. The first welding gun assembly is fixedly connected with the bottom plate through a gun handle clamping assembly and a gun neck clamping assembly; and the second welding gun assembly is fixedly connected with the bottom plate through a gun neck clamping assembly. And an upper pressing plate and a lower pressing plate of the gun handle clamping assembly are connected through bolts I to fix the gun handle of the first welding gun assembly. The wire feeding gun is arranged at the lower end part of the lower pressing plate. An insulating sleeve is arranged between the wire feeding gun and the lower pressing plate. And the upper clamping block and the lower clamping block of the gun neck clamping assembly are fixedly connected with the bottom plate through bolts II, so that the gun necks of the welding guns of the first welding gun assembly and the second welding gun assembly are fixed. And the mounting hole of the gun neck clamping assembly for mounting the second welding gun assembly on the bottom plate is a slotted hole. One pole of the preheating welding wire power supply output cable is connected with the connecting frame, and the other pole is connected with the workpiece. The invention has the advantages of reasonable design, compact structure and low manufacturing cost, reduces arc pressure compared with the traditional TIG welding by arranging the longitudinal double-tungsten-electrode hot wire argon arc welding, and particularly improves welding wire cladding speed and welding efficiency and simultaneously increases welding line width, reduces penetration and welding line dilution ratio when adopting high-current high-speed welding, ensures good welding line forming and ensures the corrosion resistance of the corrosion-resistant alloy overlaying layer. Drawings FIG. 1 is a schematic diagram of a tandem double tungsten electrode argon arc welder head. Fig. 2 is a schematic view of a structure of a connecting frame in the present invention. Fig. 3 is a top view of fig. 2. Fig. 4 is a schematic view of the gun stock clamping assembly of the present invention. Fig. 5 is a schematic view of the gun neck clamping assembly of the present invention. In the figure, the welding gun comprises a connecting frame 1, a first welding gun assembly 3, a second welding gun assembly 4, a gun hand