Clamp for controlling braze welding deformation of fuel manifold

Abstract

The invention discloses a clamp for controlling braze welding deformation of a fuel manifold. The clamp comprises a pressing unit positioned on the upper end surface of a nozzle and a supporting unitpositioned on the lower end surface of the nozzle, wherein the pressing unit comprises a stainless steel structural part (1) with a door-shaped section; two vertical sides of the structural part (1) are equal in width, but not equal in length; the supporting unit comprises a circular-ring-shaped base body (2), wherein observing holes (3) are formed in the outer periphery of the circular-ring-shaped base body (2) at equal intervals; and a supporting base (4) is arranged on a position, on the upper end surface of the circular-ring-shaped base body (2), between two adjacent observing holes (3). The clamp overcomes the problem that the end surface of the braze-welded nozzle is irregular and tilts, so that design requirements with planeness smaller than or equal to 0.3 mm are met, follow-up correcting difficulty is reduced, correcting working hours are shortened, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of brazing, and in particular relates to a fixture for controlling the deformation of a fuel oil main pipe after brazing. Background technique [0002] The fuel main pipe is an important part of the engine, and the fuel required for the engine to work must be transported through the main pipe, so the assembly welding process of parts is particularly important. The parts need to connect 24 nozzles with the oil pipe by brazing to form a ring assembly (that is, 24 nozzles are evenly distributed on the circumference of the oil pipe), and the brazed parts ensure the fuel flow, fuel distribution uniformity and spray quality. question. There are a total of 96 welding seams in the welding of the components of the fuel manifold; after welding, there are size control requirements such as position and nozzle flatness, and it is difficult to guarantee the size during the brazing process. [0003] Structural analysis i...

AI Technical Summary

Problems solved by technology

[0005] In summary, the flatness of the end face of the nozzle after welding cannot meet the design requirements. Therefore, a fixture must be designed, which can not only facilitate on-site operation and size control, but also ensure the quality of the weld seam of the parts, the size of the components, etc.

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