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Electron beam welding deformation control method of large variable-thickness component

A technology of electron beam welding and deformation control, applied in electron beam welding equipment, welding equipment, welding equipment, etc., can solve the problems of welding and welding deformation of non-variable-thickness cross-section components, reducing welding deformation and increasing the degree of restraint , to ensure the effect of welding quality

Active Publication Date: 2015-10-07
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, if only electron beams are used to weld large-thickness structural parts, welding deformation is prone to occur, and reliable and effective welding of complex variable-thickness cross-section members cannot be performed

Method used

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  • Electron beam welding deformation control method of large variable-thickness component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The material of the workpiece to be welded is titanium alloy, and the thickness of the weld seam is variable thickness, and the thickness varies from 20mm to 80mm.

[0054] (1) Clean the welding part of the workpiece to be welded before welding, remove the surface oil, and remove the oxide layer on the surface of the material by physical methods;

[0055] (2) Use the anti-deformation tooling to clamp the two workpieces 1 to be welded. The specific clamping method is the same as the above description. 30% of seam depth. The depths of the two through grooves of the tooling at the end with the smaller clamping thickness are both 30% of the depth of the weld seam of the workpiece 1 to be welded.

[0056] (3) Place the workpiece on the operating table of the vacuum electron beam welding machine and fix it with tooling;

[0057] (4) The welding seam is pre-positioned with a small electron beam current. The positioning method is double-sided positioning of the weld seam. The...

Embodiment 2

[0062] The material of the workpiece to be welded is titanium alloy, and the thickness of the weld seam is variable thickness, and the thickness varies from 10mm to 50mm.

[0063] (1) Clean the welding part of the workpiece to be welded before welding, remove the surface oil, and remove the oxide layer on the surface of the material by physical methods;

[0064] (2) Use the anti-deformation tooling to clamp the two workpieces 1 to be welded. The specific clamping method is the same as the above description, and the depth of the two through grooves of the tooling at the end with the thicker clamping thickness is 10% of the depth of the weld. %. The depth of the two through grooves of the tooling at the end of the clamping thickness is 10% of the depth of the weld.

[0065] (3) Place the workpiece on the operating table of the vacuum electron beam welding machine and fix it with tooling;

[0066] (4) The welding seam is pre-positioned with a small electron beam current. The po...

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Abstract

The invention relates to an electron beam welding deformation control method of a large variable-thickness component; a workpiece is clamped and positioned through a deformation preventing tool with a special design structure; the clamped workpiece is placed on a console of a vacuum electron beam welder for fixing; a weld line is prepositioned by a small beam flow of an electron beam; the positioning mode is weld line double-surface positioning; then, the workpiece is welded by electron beam welding process parameters with optimized design; the welding mold is double-surface welding; the structure deformation is measured after the welding; if the structure is deformed, the structure is corrected by the small beam flow correction process of the electron beam; and the method can effectively solve the connecting problem of large structural parts to improve the welding quality, and has excellent effect on whole structure deformation control.

Description

technical field [0001] The invention relates to a method for controlling deformation of electron beam welding of a large-scale variable-thickness component, which belongs to the field of material connection. Background technique [0002] With the continuous upgrading of aerospace products, the structure of the product is gradually enlarged, and the structure of the product is various, often with a special-shaped design, which puts forward higher requirements for the processing and manufacturing of materials. For the processing of large components, due to the limitation of processing capacity, it is sometimes difficult to form the whole structure. Forming each part of the structure separately and then connecting them by welding is a commonly used method at present. [0003] However, for the welding of large-thickness structures, if the traditional argon arc welding is used, the joints need to be beveled, multi-layer and multi-pass welding, the welding heat input is large, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/06B23K37/04
CPCB23K15/0006B23K15/0053B23K15/06B23K37/0435
Inventor 张俊杰康黎胡太文戎磊沈江红蒋元清
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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