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Electron beam welding method applicable to small-diameter flange plates on thin-wall top cover

An electron beam welding, small-diameter technology, applied in the direction of electron beam welding equipment, welding equipment, workpiece edge, etc., can solve the problem of low weight, achieve the effect of ensuring assembly accuracy and welding quality, and convenient control

Active Publication Date: 2017-05-17
CAPITAL AEROSPACE MACHINERY +1
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Problems solved by technology

[0007] However, there is no public information about the electron beam welding technology of the small-diameter flange of the thin-walled top cover at present, so it is urgent to develop an electron beam welding method suitable for the small-diameter flange of the thin-walled top cover, so as to meet Provide an effective solution to the high strength, low weight and high reliability requirements of aerospace products and realize engineering applications

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  • Electron beam welding method applicable to small-diameter flange plates on thin-wall top cover
  • Electron beam welding method applicable to small-diameter flange plates on thin-wall top cover
  • Electron beam welding method applicable to small-diameter flange plates on thin-wall top cover

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Embodiment Construction

[0051] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0052] An electron beam welding method suitable for small-diameter flanges with thin-walled roofs, such as image 3 As shown, the surface of the top cover is a rotating ellipsoidal surface, the opening of the top cover is the normal direction of the ellipsoidal surface, N flanges are distributed at different positions from the center of the ellipsoidal surface axis, N≥4, N The distance between the center of a flange and the axis center of the ellipsoidal surface is 480mm and 500mm;

[0053] The theoretical surface of the top cover is an ellipsoidal surface, such as Figure 7 As shown, let the bus equation be Draw an ellipse according to the busbar equation; set point O as the center point of the ellipse, point P as the tangent point of the center of the flange on the ellipse of the top cover, is the tang...

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Abstract

The invention belongs to the technical field of electron beam welding, and particularly relates to an electron beam welding method for multiple small-diameter flange plates at different circumferential positions of a large-size thin-wall space curved face top cover. A flange plate structure applicable to top cover flange plate electron beam welding is designed, a welding joint portion of each flange plate is of a butt joint lock bottom structure, and assembling precision and welding quality are effectively ensured. Meanwhile, according to the hole size in the position, to which each flange plate is assembled and welded, on the top cover, the diameter of the welding face of the corresponding flange plate is adjusted, and it is ensured that the assembling gap between the corresponding flange plate and the top cover meets welding requirements. By using a tool, by the adoption of elastic prestress deformation, welding stress is counteracted, deformation is reduced, electron beam welding for the flange plates distributed at different positions of the space curved face top cover is achieved, and satisfying welding quality is obtained.

Description

technical field [0001] The invention belongs to the technical field of electron beam welding, and in particular relates to an electron beam welding method for a plurality of small-diameter flanges at different circumferential positions on a large-size thin-wall space curved top cover. Background technique [0002] Electron beam welding is referred to as EBW, generally in a vacuum environment, using the heat energy generated by the converging high-speed electron flow to bombard the joint of the weldment to fuse the metal to be welded. In view of the rapid development of aviation and aerospace manufacturing, welding technology needs to continuously adapt to various new materials, complex special structures and welding problems of precision parts, and the conventional welding method using arc as heat source can no longer fully meet these special requirements. [0003] In foreign aviation and aerospace industries, vacuum electron beam welding has become one of the most reliable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/04B23K33/00
CPCB23K15/0006B23K15/0013B23K15/0053B23K15/04B23K33/00
Inventor 张益坤谢美蓉赵衍华王漫朱瑞灿王炜田堂振朱平萍
Owner CAPITAL AEROSPACE MACHINERY
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