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A kind of preparation method of brazed aluminum honeycomb panel

A honeycomb panel and brazing technology, which is applied in the field of preparation of brazed aluminum honeycomb panel, can solve the problems of honeycomb panel mechanical properties that need to be improved, slow thermal conductivity, and difficulty in large-scale production, and achieve the solution of aluminum brazed honeycomb panel risk, producing reliable and simple effects

Active Publication Date: 2021-02-02
佛山市桐立新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the shortcomings of brazing honeycomb panels are: slow thermal conductivity, high energy consumption, desoldering due to high oxygen content in the furnace, difficulty in large-scale production, and the mechanical properties of honeycomb panels need to be improved due to the influence of welding quality.

Method used

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  • A kind of preparation method of brazed aluminum honeycomb panel
  • A kind of preparation method of brazed aluminum honeycomb panel
  • A kind of preparation method of brazed aluminum honeycomb panel

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preparation example Construction

[0033] In order to solve the above problems, the invention provides a preparation method of brazing aluminum honeycomb panels, comprising the following steps:

[0034] S1. Select upper skin, lower skin and edge banding profiles;

[0035] S2. making brazing honeycomb core;

[0036] S3. Coating the upper skin and the lower skin in step S1 with the first brazing flux respectively; coating the edge sealing profile in step S1 with the first brazing paste;

[0037] S4. Put the upper skin, the lower skin, the edge banding profile in the step S3, and the brazing honeycomb core in the step S2 on the special tooling in the form of a sandwich, and flatten to obtain a semi-finished product;

[0038] S5. Welding the semi-finished product obtained in step S4 in a brazing furnace.

[0039] Step S1

[0040] In the present application, the upper skin is located on the upper surface of the brazed honeycomb core, and the lower skin is located on the lower surface of the brazed honeycomb cor...

Embodiment approach

[0043] As an embodiment, the composite aluminum alloy plate is selected from 4343-3003 double-composite aluminum alloy plate, 4343-3003-6 series four-composite aluminum alloy plate, 5 series-3003 four-composite aluminum alloy plate, 7 series-3003 quadruple At least one of the composite aluminum alloy plates.

[0044] In the 4343-3003 double composite plate, the thickness of the 4343 aluminum alloy is 8-15% of the total thickness of the double composite aluminum alloy plate, and the rest is 3003 aluminum alloy.

[0045] The 4343 aluminum alloy refers to an alloy whose main chemical composition is Si (6.8-8.2wt%) and the rest is Al. It has a low melting point and good fluidity, and it will become solder after soldering.

[0046] The 3003 aluminum alloy refers to an Al-Mn alloy, and its chemical composition is mainly: 0.6wt% silicon, 0.7wt% iron, 0.05-0.2wt% copper, 1.0-1.5wt% manganese, 0.1wt% zinc, and 0.15wt% others , Aluminum allowance.

[0047] The "5 series" refers to 5 ...

Embodiment 1

[0158] A preparation method for brazing aluminum honeycomb panels, comprising the following steps:

[0159] S1. Select upper skin, lower skin and edge banding profiles;

[0160] S2. making brazing honeycomb core;

[0161] S3. Spray the first brazing flux on the upper and lower skins in step S1 by electrostatic spraying; scrape and coat the first brazing paste on the edge sealing profile in step S1;

[0162] S4. Place the upper skin, lower skin, edge banding profile in step S3, and the brazing honeycomb core in step S2 on the graphite plate in the form of a sandwich, and flatten to obtain a semi-finished product;

[0163] S5. Welding the semi-finished product obtained in step S4 in a brazing furnace.

[0164] In step S1, the materials of the upper skin and the lower skin are independently 4343-3003 double-composite aluminum alloy plates; the thickness of the 4343 aluminum alloy is 10% of the total thickness of the double-composite aluminum alloy plates, and the rest is 3003 a...

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Abstract

The invention belongs to the technical field of honeycomb panel production, and in particular relates to a preparation method of a brazed aluminum honeycomb panel. The invention discloses a method for preparing a brazed aluminum honeycomb panel, which comprises the following steps: S1. Selecting an upper skin, a lower skin, and an edge-sealed profile; S2. Making a brazed honeycomb core; S3. The upper skin and the lower skin are respectively coated with the first brazing flux; the edge sealing profile in step S1 is coated with the first brazing paste; S4. the upper skin, the lower skin, and the edge sealing profile in step S3 . The brazed honeycomb core in step S2 is placed on a special tooling in the form of a sandwich, and flattened to obtain a semi-finished product; S5. The semi-finished product obtained in step S4 is welded in a brazing furnace to obtain. The preparation method of the present application solves the problems of low welding strength, slow thermal conductivity, and poor mechanical properties of the honeycomb panel during the welding process, and the brazing furnace is modified to fully solve the risk of large-area airtight welding of aluminum brazed honeycomb panels , making the production more reliable and simple, and enabling large-scale production.

Description

technical field [0001] The invention belongs to the technical field of honeycomb panel production, and in particular relates to a preparation method of a brazed aluminum honeycomb panel. Background technique [0002] Aluminum honeycomb panel refers to the aluminum honeycomb core or circular aluminum honeycomb core made of aluminum foil into a regular hexagonal honeycomb shape. Large airports, ceilings of subway and high-speed rail stations, rail transit interiors, aerospace and other fields. [0003] Advantages of aluminum honeycomb panel composite materials: light weight, high flat compressive strength, high flat tensile strength, light weight, excellent compression and earthquake resistance, and high flatness of the plane. [0004] The aluminum honeycomb panels currently on the market are all bonded with polymer adhesives, such as the invention patent application number 201810211802.5, the manufacturing method of which is to prepare the honeycomb core is: 1) Use ultrasoni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00B23K1/008
CPCB23K1/008B23P15/00
Inventor 欧阳伟李鹏钟永佳任碧野
Owner 佛山市桐立新材料科技有限公司
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