Method for electron beam welding of hollow flat tube type parts

A technology of electron beam welding and electron beam, which is applied in the field of electron beam welding of hollow flat tube parts, can solve the problems that hollow flat tubes cannot be welded at the same time, welding efficiency needs to be improved, and welding methods are lacking, so as to avoid welding defects and solve Difficult to weld and improved welding efficiency
CN106624320AActive Publication Date: 2017-05-10AECC AERO SCI & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AECC AERO SCI & TECH CO LTD
Publication Date
2017-05-10

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Abstract

The invention discloses a method for electron beam welding of hollow flat tube type parts. Firstly, two hollow flat tube type parts are installed on a welding worktable in an electron beam welding machine vacuum chamber, the installing positions of the two hollow flat tube type parts are adjusted to make included angles formed by the upper side faces of their hollow flat tubes and an electron beam emitted by an electron beam generator range from 45 degrees to 90 degrees; vacuumizing is performed to make the pressure intensity in the electron beam welding machine vacuum chamber smaller than or equal to 1.0*3 mbar; finally, the welding worktable or the electron beam generator is moved at a constant speed to introduce the electron beam from a welding part on one side of the long axes of the hollow flat tubes and is moved to the tail end of the welding part on the other side of the long axes of the hollow flat tubes in the long-axis direction, namely welding of the two hollow flat tube type parts is completed. The welding of two faces of the hollow flat tubes is achieved and the welding efficiency is improved by at least one time by adopting the method, the problem that shielded portion parts are difficult to weld is solved, and the method has wide application prospect in the field.
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Description

technical field

[0001] The invention belongs to the field of welding technology, and relates to the welding of flat tube parts, in particular to a method for electron beam welding of hollow flat tube parts. Background technique

[0002] When the hollow flat tube parts are welded by electron beam, the existing welding methods mainly include two kinds: (1) if the hollow flat tube shape of the hollow flat tube parts is standardized, the hollow flat tube parts and the electron beam generator Carry out relative rotation, and continuously weld the welding part of the hollow flat tube; (2) If the shape of the hollow flat tube of the hollow flat tube part is not standardized, fix the electron beam generator, and turn the hollow flat tube once or several times Parts, complete the welding of all welding parts of hollow flat tube parts in sections. However, both of the above two welding methods cannot realize the simultaneous welding of the upper and lower sides of the hollow flat tub...

Claims

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