TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band

An automatic surfacing and copper alloy technology, applied in welding equipment, arc welding equipment, metal processing equipment, etc., can solve the problems of low dilution rate of surfacing layer, poor welding quality, low welding efficiency, etc., and achieve the repeatability of welding process. Good, reduce the processing process, improve the effect of productivity

Inactive Publication Date: 2011-07-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the surfacing welding in China adopts the manual arc surfacing welding process, which not only has low welding efficiency, but also has poor welding quality and low dilution rate of the surfacing layer.

Method used

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  • TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band
  • TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band
  • TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, combining figure 1 , the TIG automatic surfacing welding method of shell copper alloy conduction band of the present invention is realized by the TIG automatic surfacing device of shell copper alloy conduction band, and it is made of welding system (21), welding system motion adjustment mechanism (22) and projectile body motion mechanism (23), the welding system (21) is connected to the welding system movement adjustment mechanism (22), and the welding system movement adjustment mechanism (22) is connected to the elastic body movement mechanism (23).

[0019] The welding system (21) includes a cold wire feeder (1), a hot wire feeder (2), a hot wire power supply (3), a TIG surfacing welding power supply (4), a welding torch (5), a cold wire Wire feeder (6), hot wire feeder (7), water shower pipe on the back of the body (8) and water tank (9), cold wire feeder (1) connected to hot wire feeder (2), hot wire The wire feeder (2) is connected to the hot wire po...

Embodiment 2

[0023] Example 2, combined with figure 1 , figure 2 , the present invention shell copper alloy guide band TIG automatic overlay welding method, welding process is as follows:

[0024] Step 1: Control the movement of the welding head and the welding workpiece through the PLC human-machine control interface. After centering the relative position of the welding torch and the workpiece, preset the welding current, projectile rotation speed and rotation mode through the PLC, and the uniform speed and stepping two One mode, the projectile body adopts the uniform rotation mode when the surfacing welding is relatively narrow, and the stepping rotation mode is used when the surfacing welding elastic belt is wider, the cold wire, hot wire feeding speed, welding head swing amplitude and speed, and arc lifting time and current parameters, real-time observation and adjustment;

[0025] Step 2: Before the welding arc is ignited, pass cooling water to cool the welding torch and projectile...

Embodiment 3

[0028] Example 3, combined with figure 1 , to realize the TIG automatic surfacing device for shell copper alloy guide belt of the present invention, with automatic feeding and clamping mechanism, the welding head can automatically swing according to the required belt width, and the welding head can realize free movement in the X-Y two-dimensional direction At the same time, it can realize the adjustment of the Z direction to realize the centering of the welding torch and the surfacing projectile; the projectile can carry out two rotation modes of uniform speed and step rotation under the action of the projectile rotation drive system, and the constant speed rotation is suitable for narrow elastic belts For welding, step rotation is suitable for welding with wider elastic bands. All welding parameters can be pre-set by the control panel and can be controlled and adjusted in real time. The movement mode of the workpiece is: the projectile to be surfacing is fixed by the pneumat...

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Abstract

The invention aims to provide a TIG (Tungsten Inert Gas) automatic surfacing method for a projectile copper alloy conduction band by using a hot-cold wire double wire feeding system and a PLC (Programmable Logic Controller) control system. A welding process comprises the following steps of: presetting welding current, projectile body rotating speed and a rotating mode consisting of a uniform speed mode and a stepping mode by using the PLC, and introducing cooling water before ignition of welding electric arc to cool a welding gun and a projectile body, wherein the uniform-speed rotating mode is adopted during the surfacing of a narrow projectile band, and the stepping rotating mode is adopted during the surfacing of a wide projectile band; moving the welding gun to an appropriate position, igniting hot wire electric arc, welding main welding electric arc, and feeding a hot wire and a cold wire at the same time; and after surfacing and arc starting, surfacing for 5-10 millimeters at low current and low wire feeding speed. The method has the advantages of simplifying a machining process, lowering the production cost, reducing the machining procedures of the conventional process, shortening the production time, reducing the workload, increasing the production efficiency, lowering the material consumption and saving cost; and the welding process has high repeatability, and is easyto realize automatic production.

Description

(1) Technical field [0001] The invention relates to a welding technology, in particular to a TIG automatic surfacing welding method for a copper alloy conduction band of a cannonball. (2) Background technology [0002] The copper alloy layer deposited on the surface of the steel substrate can improve the electrical conductivity, thermal conductivity and surface hardness of the steel. This technology is widely used in the aerospace and weapon manufacturing fields. For example, in the assembly of shell belts, the traditional process uses a mechanical method to embed copper alloy rings on the steel substrate. This method increases stress concentration and weakens the strength of the projectile body. The wall thickness of the ring groove will make the inner hole diameter of the projectile Shrinking, thereby increasing the technological difficulty of processing the projectile body, reducing the amount of charge, and reducing the explosive power. Simultaneously, it takes man-hour...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04
Inventor 吕世雄黄永宪杨士勤陈基明杨涛曲杰
Owner HARBIN INST OF TECH
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