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Automatic brazing process for heating disc production

A technology of brazing process and heating plate, which is applied in metal processing, manufacturing tools, welding equipment, etc., can solve the problems of difficulty in guaranteeing welding quality, difficulty in getting the best of both worlds, high proportion of slag inclusion and air holes, etc., to improve brazing quality and brazing Welding efficiency, reduction of labor factors, and the effect of reducing manufacturing costs

Active Publication Date: 2018-02-16
广州有研焊接材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both are soldered with the same powdered solder, it looks rough and it's hard to have the best of both worlds
[0006] 2. Powdery solder will produce dust pollution in the process of distributing; it also produces a lot of post-soldering residue, so the heating plate must be sandblasted, and sandblasting will produce dust pollution again, resulting in the operating environment of pre-processing and post-processing. Not environmentally friendly
[0007] 3. Powdered solder cannot be picked up by manipulators, only with the help of a lot of manual work, and cannot realize automatic operation
[0008] 4. The oxide skin of powdery aluminum solder is thick (the oxygen content is 900ppm), and the required aluminum flux is large, resulting in a high proportion of slag inclusions and pores in the weld, and the welding quality is difficult to guarantee
[0009] 5. It requires a lot of manpower, solder and related equipment, and the manufacturing cost is relatively high

Method used

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  • Automatic brazing process for heating disc production
  • Automatic brazing process for heating disc production
  • Automatic brazing process for heating disc production

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The automatic brazing process for the production of heating discs according to the present invention, the brazing process described in this embodiment includes the following steps:

[0040] (1) Coating of aluminum flux: prepare aluminum flux slurry with water, wherein the weight ratio of aluminum flux to water is: flux: water = 1:2, and the method of quantitatively dipping with a brush , brushed onto the surface of heat-conducting aluminum plates and stainless steel discs; due to the single and fixed operation, it can be designed as an automated mechanical action;

[0041] (2) Aluminum solder paste coating: use a pressure dispenser to quantitatively inject aluminum solder paste into the position to be brazed on the thermally conductive aluminum plate by controlling the dispensing pressure, dispensing time, and moving track of the dispenser. Due to the single operation and Fixed, can be designed as automatic mechanical action; wherein, the amount of aluminum solder paste...

Embodiment 2

[0048] The automatic brazing process for the production of heating discs according to the present invention, the brazing process described in this embodiment includes the following steps:

[0049] (1) Coating of aluminum flux: prepare aluminum flux slurry with water, wherein the weight ratio of aluminum flux to water is: flux: water = 1:5, and the method of quantitatively dipping with a brush , brushed onto the surface of heat-conducting aluminum plates and stainless steel discs; due to the single and fixed operation, it can be designed as an automated mechanical action;

[0050] (2) Coating of aluminum solder paste: A pressure-type dispensing machine is used to quantitatively inject aluminum solder paste to the position to be brazed on the thermal conductor aluminum plate by controlling the dispensing pressure, dispensing time, and moving track of the dispensing machine. Due to the single operation And fixed, it can be designed as an automatic mechanical action; wherein, the ...

Embodiment 3

[0057] The automatic brazing process for the production of heating discs according to the present invention, the brazing process described in this embodiment includes the following steps:

[0058] (1) Coating of aluminum flux: Prepare aluminum flux slurry with water, wherein the weight ratio of aluminum flux to water is: flux: water = 1:3, and the method of quantitatively dipping with a brush , brushed onto the surface of heat-conducting aluminum plates and stainless steel discs; due to the single and fixed operation, it can be designed as an automated mechanical action;

[0059] (2) Aluminum solder paste coating: use a pressure dispenser to quantitatively inject aluminum solder paste into the position to be brazed on the thermally conductive aluminum plate by controlling the dispensing pressure, dispensing time, and moving track of the dispenser. Due to the single operation and Fixed, can be designed as automatic mechanical action; wherein, the amount of aluminum solder paste...

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PUM

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Abstract

The invention discloses an automatic brazing process for heating disc production. The process comprises the following steps: (1) aluminum brazing flux pulp is prepared, and is brushed on the surfacesof a heat conducting aluminum plate and a stainless steel disc; (2) aluminum welding paste is injected in a to-be-brazed position of the heat conducting aluminum plate by adopting a glue dispensing mode; (3) an aluminum welding piece roll is punched to prepare a welding piece with a preset shape; and then, the welding piece is automatically fed to the stainless steel disc coated with an aluminum brazing flux for assembly; and (4) the heat conducting aluminum plate and an aluminum heating pipe are assembled for the first time; then, the heat conducting aluminum plate and the stainless steel disc to which the welding piece is attached are assembled for the second time; and then brazing is performed. Automatic and intelligent novel welding materials are obtained through the process, and the welding paste and the aluminum welding piece are used in the process, automatic and intelligent elements are embodied, and the process is green in operating environment, improves the brazing quality and the brazing efficiency, reduces the manufacturing cost, and really achieves the purpose of replacing workers with machines.

Description

technical field [0001] The invention relates to an automatic brazing process, in particular to an automatic brazing process for producing heating discs. Background technique [0002] In the small household appliance industry, as one of the core components of electric heating appliances, the heating plate is widely used in electric kettles, soybean milk machines, electric hot pots, coffee machines and other products. The brazing process of the heating plate is the key technology of the production of the heating plate. It uses the brazing material and the ammonia decomposition protective atmosphere tunnel furnace to weld the three parts of the aluminum heating tube, the heat-conducting aluminum plate, and the stainless steel disc in sequence. [0003] The brazing material used is powdered aluminum flux (KALF 4 -K 3 ALF 6 ) and powdered aluminum solder (Al 88 Si 12 ), based on this, the specific steps of the brazing process are: 1, prepare the aluminum brazing flux slurry ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/00B23K1/20
CPCB23K1/0008B23K1/20B23K2101/36
Inventor 蔡志红蔡沛沛余华钢刘宏江张碧波胡泽宇贺军四曾燕刘福平黄云帅
Owner 广州有研焊接材料科技有限公司
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