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Vacuum brazing method for slender weld seam of hole-shaft matching parts

A technology of hole shaft matching and brazing method, which is applied in the direction of welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems that there are many unwelded areas of the brazing material and the requirements of the weld seam are not met, so as to ensure the quality of brazing, Easy to assemble and operate

Active Publication Date: 2022-06-07
西安成立航空制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After welding, cut and check that there are many unwelded areas of solder in 5 and 4 places, which do not meet the welding seam requirements

Method used

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  • Vacuum brazing method for slender weld seam of hole-shaft matching parts

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Embodiment Construction

[0036] The following will be combined with a preferred embodiment of the present invention described in conjunction with the accompanying drawings, the technical solution in a preferred embodiment of the present invention is clearly and completely described.

[0037] Figure 1 Schematic diagram of the assembly of the hole type 1 and the shaft part 2, the shaft part 2 includes a large diameter part 3, a small diameter part 5 and a cone face connecting the two 4, the large diameter part 3 and the small diameter part 5 and the hole part 1 have a unilateral welding gap of 0.05-0.1cm, the front end of the small diameter part 5 has a clamping part that can be tightly matched with the hole type 1 6, the vacuum brazing method of the slender weld of the aperture shaft with the part includes the following steps,

[0038] 1. Verification parts:

[0039] (1) spare parts: prepare hole profile 1 and shaft profile 2, nickel-based alloy powder brazing, binder, nickel foil thickness of 0.05cm; in ...

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Abstract

The invention discloses a vacuum brazing method for a slender weld of a hole-shaft matching part, which comprises the following steps: assembling the part, spraying brazing material; The cone surface is evenly distributed at 3-5 places in the circumferential direction; assembly: put the shaft-shaped part into the hole-shaped part, assemble to the bottom, and the clamping part and the inner wall of the hole-shaped part are tightly fitted; coating and injecting solder: use a syringe on the shaft-shaped part and the hole-shaped part The edge of the gap formed by the parts is evenly coated with the prepared paste solder for a week; drying: clean the parts and put them in an oven at (80±10) °C, keep warm for (40±10) min; put them into the furnace for brazing. In this vacuum brazing method, the front end of the hole-shaft matching part is tightly fitted, and nickel sheets of the same thickness are evenly distributed along the circumference of the cone surface for spot welding, which double guarantees the welding gap and prevents the cone surface from sticking to death during the assembly process. Good brazing quality of slender welds is ensured; the process is easy to operate, the parts are easy to assemble, and the pre-installed nickel sheet on the cone surface does not affect the assembly of parts.

Description

Technical field [0001] The present invention belongs to the field of vacuum brazing technology, in particular to a hole shaft with a part slender welding method vacuum brazing method. Background [0002] Vacuum brazing is in the vacuum state, the brazing material in its own fluidity and capillary action, the brazing material to the base metal spread, diffusion to form a certain strength of the welding joint welding method, because it is carried out under vacuum conditions, will not make the parts oxidation, decarburization, carbonization, pollution, deterioration and other phenomena, and do not need to add braze agent. However, the input cost and maintenance cost of this technology are high, so it is generally used in the aviation and aerospace industries. [0003] In general, for hole shaft fittings, mainly controlled in the machining of parts with tolerances, to control the welding gap after assembly, sometimes using tooling positioning, burr positioning, direct spot welding po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00
CPCB23K1/00
Inventor 杨冰彭建科苏展屈乐
Owner 西安成立航空制造有限公司
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