Arc boosting and current increasing method for overlap joint of annular elastic belts and based on cooperative adjustment of multiple parameters

A multi-parameter, elastic belt technology, used in welding equipment, arc welding equipment, manufacturing tools, etc., can solve the problems of low projectile strength, inconsistent height of lap joints, and difficult belt welding, so as to improve the power of the shell and solve the Difficulty in welding and the effect of increasing the amount of filler

Active Publication Date: 2020-06-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of the existing elastic band welding difficulties, such as inconsistent heights of lap joints in the circumferential direction of the surfacing layer and low strength of the elastic body during the forming process of the lap surfacing, and further provides a ring-shaped elastic band lap joint Multi-parameter cooperative adjustment method for arc raising and current raising

Method used

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  • Arc boosting and current increasing method for overlap joint of annular elastic belts and based on cooperative adjustment of multiple parameters
  • Arc boosting and current increasing method for overlap joint of annular elastic belts and based on cooperative adjustment of multiple parameters
  • Arc boosting and current increasing method for overlap joint of annular elastic belts and based on cooperative adjustment of multiple parameters

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1~3 Description of this embodiment, a multi-parameter cooperative adjustment arc raising and current raising method for ring elastic belt lapping, which includes three stages, followed by arc starting stage, stable surfacing stage and lapping stage, and the speed range of the projectile body is 0.1- 20r / min and keep the speed of the projectile constant during the welding process.

[0017] The first stage is the arc starting stage. In this stage, the welding current is linearly increased to 50-200A, the wire feeding speed is 0.5-20m / min, and the arc length is 1mm-5mm.

[0018] The second stage is the stable surfacing stage. In this stage, the welding current is stabilized at 50-200A, the wire-feeding speed is 0.5-20m / min, the arc length is 1mm-5mm, and the welding current, wire-feeding speed and arc length are kept stable. .

[0019] The third stage is the lap joint stage. In this stage, the welding current rises to 120...

specific Embodiment approach 2

[0022] Specific implementation mode two: combination Figure 1~3 To illustrate this embodiment, when the surfacing welding material is copper, that is, during the lap forming process of the surfacing welding copper elastic band, the rotational speed of the projectile during the welding process is 1.5r / min and remains constant, and the flow rate of argon gas is 10L / min and remains constant. In the welding process, the welding current in the arc starting stage increases linearly to 160A, the wire feeding speed increases linearly to 1.4m / min, and the arc length is 3mm; the welding current in the stable surfacing stage is stable at 160A, and the wire feeding speed is 1.4m / min, the arc length is 3mm, and remains stable; the wire feeding speed is gradually reduced from 1.4m / min to 0m / min during the lapping stage, and the arc length is elongated to 4mm, and the pre-crystallization surfacing layer is controlled by changing the current characteristics , the temperature rises to make it...

specific Embodiment approach 3

[0023] Specific implementation mode three: combination Figure 1~3 To illustrate this embodiment, when the surfacing welding material is soft iron, that is, during the lap forming process of the surfacing welding soft iron elastic belt, the rotational speed of the projectile during the welding process is 1r / min and remains unchanged, and the flow rate of argon gas is 12L / min and Keeping the same, in the welding process, the welding current in the arc starting stage increases linearly to 165A, the wire feeding speed increases linearly to 1.3m / min, and the arc length is 2.8mm; in the stable surfacing stage, the welding current is stable at 160A, and the wire feeding speed is linearly increased to 1.3m / min. The wire speed is 1.3m / min, the arc length is 2.8mm, and remains stable; the wire feeding speed is gradually reduced from 1.3m / min to 0m / min during the lapping stage, and the arc length is elongated to 4.5mm. characteristics to control the first crystallization of the surfacin...

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Abstract

The invention provides an arc boosting and current increasing method for overlap joint of annular elastic belts and based on cooperative adjustment of multiple parameters, and belongs to the technicalfield of welding. By the adoption of the arc boosting and current increasing method, the problems that in the prior art, welding of elastic belt is difficult, and the heights of circumferential overlap joints of surfacing layers are inconsistent and the strength of elastic bodies is low in the overlap joint surfacing process are solved. The arc boosting and current increasing method comprises three stages which are respectively an arcing stage, a stable surfacing stage and an overlap joint stage, wherein the rotating speed range of elastic bodies is 0.1-20r / min, and the rotating speed of theelastic bodies is kept unchanged in the welding process. In the circumferential overlap joint process of annular elastic belts of composite joint elastic belts, overlap joint formation of the elasticbelts of a composite structure is achieved based on the relation of the wire feeding speed, the welding current and the arc length with overlap joint formation. By the adoption of the arc boosting andcurrent increasing method, the TIG welding requirements can be met, and the problem of difficult welding of the composite elastic belts is effectively solved; and the charging quantity of cannonballsis improved while the strength of the elastic belt is guaranteed, and the power of the cannonballs is improved.

Description

technical field [0001] The invention relates to a multi-parameter collaborative adjustment method for arc raising and current raising in the lap joint of annular elastic belts, which belongs to the field of welding technology. Background technique [0002] The belt is the seal of the shell, an important part of the shell body structure, and a key component to effectively ensure the flight stability of the shell and accurately hit the target. The traditional belt mechanical belt needs to ensure the thickness of the shell wall to process the dovetail groove in the projectile body, which reduces the strength of the projectile body and the uniformity of blasting, reduces the amount of charge, and reduces the power of the projectile. In order to ensure the design strength of the projectile, the wall thickness must be increased, which reduces the amount of charge and the power of the projectile. TIG welding is currently one of the effective ways to solve the above problems. [00...

Claims

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Application Information

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IPC IPC(8): B23K9/167B23K9/067B23K9/133
CPCB23K9/067B23K9/133B23K9/167
Inventor 黄永宪秦志伟周荣林吕世雄范强
Owner HARBIN INST OF TECH
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