Intermediate temperature self-reaction brazing method for aluminum honeycomb boards

A technology of aluminum honeycomb and honeycomb panels, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc. Dissolve the base metal and other problems, achieve the effects of easy realization, high temperature aging resistance and other performance improvements, and avoid the difficulty of presetting the solder

Inactive Publication Date: 2016-05-11
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a medium-temperature self-reaction brazing method for aluminum honeycomb panels, which can realize the brazing connection of aluminum honeycomb panels at 570 °C without using alloy solder, and solve the problem of The problem of adhesive cracking of the adhesive aluminum honeycomb panel and the excessive brazing temperature of the existing brazed aluminum honeycomb panel, and the dissolution of the base metal by the brazing filler metal has been solved.

Method used

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  • Intermediate temperature self-reaction brazing method for aluminum honeycomb boards
  • Intermediate temperature self-reaction brazing method for aluminum honeycomb boards
  • Intermediate temperature self-reaction brazing method for aluminum honeycomb boards

Examples

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Effect test

Embodiment 1

[0041] Aluminum honeycomb panels were prepared by brazing with 1mm thick 3003 aluminum alloy as the panel and 0.2mm thick composite aluminum foil (3003 aluminum alloy as the core material and 4045 aluminum alloy as the cladding layer) as the honeycomb core.

[0042] 1) Make the aluminum honeycomb core fixture, process the stainless steel plate into four frame bars, such as figure 2 The aluminum honeycomb core fixture frame bar 6 shows that the length, width, and thickness of the frame bar are: 90mm×8mm×6mm, and an M2 threaded hole is opened at both ends of each frame bar, and the distance between the two threaded holes is 76mm to ensure that the center of the fixture The size of the aluminum honeycomb core that can be fixedly assembled is 68mm×68mm. use figure 2 Bolts 4 for fixing the aluminum honeycomb core fixture and nuts 5 for fixing the aluminum honeycomb core fixture connect and fix the four frame bars end to end in sequence, that is, they are assembled into an alumin...

Embodiment 2

[0050] Example 2: Brazing Prepare an aluminum honeycomb panel with a 1.5mm thick composite brazing plate, a core material of 3003 aluminum alloy, a cladding layer of 4043 aluminum alloy as a panel, and a 0.15mm thick 1060 aluminum foil as a honeycomb core. The specific preparation process is the same as in Example 1.

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Abstract

The invention discloses an intermediate temperature self-reaction brazing method for aluminum honeycomb boards. According to the brazing method, no alloy brazing filler metal is used, gas protection or vacuum protection is not adopted, a honeycomb core strip and an aluminum alloy panel which are coated with self-reaction brazing fluxes are assembled and fixed into an aluminum honeycomb board structure through a self-manufactured clamp, then insulating is conducted for 30 min in a box type atmosphere furnace heated to 570 DEG C, brazing is carried out, and the aluminum honeycomb boards good in connection are obtained. The method has the beneficial effects that the metallurgy connection of the aluminum honeycomb boards is successfully achieved in the intermediate temperature section, the problems of base metal overburning, brazing filler metal corrosion and the like caused by the too high brazing temperature are avoided, the limitation on the aluminum honeycomb boards due to the adhesive performance is avoided, and a foundation is laid for the later wide application of the intermediate temperature aluminum honeycomb board brazing technology.

Description

technical field [0001] The invention relates to a medium-temperature self-reaction brazing method for an aluminum alloy without adding alloy solder, in particular to a medium-temperature self-reaction brazing method for an aluminum honeycomb plate. Background technique [0002] Aluminum honeycomb panels have the characteristics of low density, high rigidity, good stability, and good sound and heat insulation properties, and are widely used in aerospace, transportation, and architectural decoration. The traditional aluminum honeycomb structure generally adopts the organic colloid bonding process, and the joints can only form a physical bond, so that the performance of the aluminum honeycomb structure is generally restricted by the adhesive, and its application field, working environment and service life are also limited; while aluminum alloy brazing Then metallurgical bonding can be formed at the joint, with small deformation and high precision, and the performance of the joi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/20B23K3/08B23K37/04
CPCB23K1/0014B23K1/20B23K1/206B23K3/087B23K2103/10
Inventor 程方杰赵欢何培龙肖兵
Owner TIANJIN UNIV
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