Electron beam welding method for lock-bottom-free film disc type part

A technology of electron beam welding and membrane disk, which is applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of increasing the deformation of parts after welding, unreserved processing allowance, unqualified parts size, etc. To achieve the effect of controlling welding deformation, effectively controlling welding deformation and good weld seam

Active Publication Date: 2021-04-27
HARBIN DONGAN ENGINE GRP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, for some electron beam welded parts such as some diaphragm components, there is no machining allowance reserved in the design process, the amount of post-weld processing is small and there are strict requirements for post-weld deformation
According to the traditional method, only the electron beam current can be increased to reduce the possibility of welding defects, but the electron beam current will increase the post-weld deformation of the parts, resulting in unqualified parts size and scrapped parts

Method used

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  • Electron beam welding method for lock-bottom-free film disc type part
  • Electron beam welding method for lock-bottom-free film disc type part
  • Electron beam welding method for lock-bottom-free film disc type part

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Embodiment Construction

[0035] In order to further describe the content of the present invention in detail, the content of the present invention will be further described below in conjunction with the accompanying drawings.

[0036] Such as figure 1 Shown, a kind of electron beam welding method of disc-like parts without bottom-lock film, comprises the following steps:

[0037] S1: Select the same material as that of the non-lock bottom film disc to be welded and process a ring-shaped protective sleeve, such as image 3 As shown, the outer diameter of the annular protective sleeve is an interference fit with the central through hole of the non-lock bottom film disc to be welded, and there is a through hole in the center of the annular protective sleeve; the width of the annular protective sleeve is 2mm-3mm; The height of the annular protective sleeve is 0.5mm-1mm higher than that of the non-lock bottom membrane disc to be welded;

[0038] S2: Use 800-mesh sandpaper to mechanically polish the ring-s...

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Abstract

The invention relates to the technical field of electron beam welding, in particular to an electron beam welding machining method for a lock-bottom-free film disc type part. An annular protective sleeve is added and electron beam welding process parameters are appropriate, so that the weld joint quality is guaranteed, welding deformation is effectively controlled, and good weld joints are obtained. By the adoption of the method, products are all qualified through flaw detection after welding, and a lock-bottom-free film disc meets the requirements that the roundness of the lock-bottom-free film disc is smaller than or equal to 0.1 mm and the parallelism of the lock-bottom-free film disc is smaller than or equal to 0.1 mm. The method is high in applicability and can be applied to various lock-bottom-free electron beam welding products.

Description

technical field [0001] The invention relates to the technical field of electron beam welding, in particular to an electron beam welding processing method for disc-like parts without a bottom-lock film. Background technique [0002] Electron beam welding uses a high-energy electron beam to bombard materials, and the kinetic energy of the electrons is converted into heat energy, melting the metal to form a beam hole, and forming a weld while the workpiece or electron beam moves. Electron beam welding technology can weld refractory alloys and refractory materials, with large welding depth, good weld performance, small welding deformation, high welding precision, and high productivity. It is widely used in aerospace industry. [0003] Welding defects often appear at the bottom of the weld in the electron beam welding process, so most electron beam welding products often reserve a machining allowance in the design process, and turn the bottom of the weld to remove welding defect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00B23K15/06
CPCB23K15/0053B23K15/0033B23K15/0026B23K15/06Y02P70/10
Inventor 张伟杰郑欣陈玉宝李洪宇朱永胜高明邸玉良
Owner HARBIN DONGAN ENGINE GRP
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