Process for online coating soft brazing material on surface of copper alloy high-frequency welded tube for heat exchanger
A technology for heat exchangers and high-frequency welded pipes, used in devices for coating liquids on surfaces, pretreatment surfaces, coatings, etc. The high price of brazing furnaces achieves the effect of fast speed, simple method and low cost
Inactive Publication Date: 2015-03-11
广州大华仁盛铝合金管业有限公司
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Problems solved by technology
[0002] In some special industries, such as construction machinery, field generator sets, military equipment, high-humidity and high-salt environment and other special equipment and conditions, due to the special requirements of the power unit and the high corrosiveness of the environment, the heat exchanger responsible for its heat dissipation is used under normal conditions. Common heat exchange equipment such as aluminum alloy radiators and copper tube radiators produced cannot meet the requirements of corrosion resistance and high pressure resistance
At present, copper alloy high-frequency welded pipes can be produced in China. The brazing material of this copper alloy has very strict requirements on the brazing temperature. At present, domestic brazing furnaces with qualified temperature control to meet such requirements cannot be produced. Imported ones correspond to brazing. Furnace is expensive
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[0019] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which like reference numerals represent like elements.
[0020] Please refer to Figure 1-2 , the on-line coating process of the surface soldering material of the copper alloy high-frequency welded pipe for heat exchangers includes the following steps:
[0021] First, the advancing speed of the copper alloy high-frequency welded pipe material 1 for heat exchangers is 100 to 150 m / min.
[0022] Second, the surface of the pipe 1 is soaked and cleaned by passing the pipe 1 through the pipe surface cleaning box 2 . This step is because the pipe 1 is exposed to many processes such as drawing and friction in the raw material processing process, high-frequency welding forming process, etc., and there are harmful effects such as oxidation and drawing oil residue on the surface that affect the coating of the solder. In-line cleaning of the surface of the tube 1 must be ca...
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The invention discloses a process for online coating a soft brazing material on the surface of a copper alloy high-frequency welded tube for a heat exchanger. The tube stock of the copper alloy high-frequency welded tube for the heat exchanger passes through a tube stock surface cleaning box, a tube stock surface cleanser, a tube stock surface soft brazing material coating box, a tube stock surface soft brazing material coating nozzle and a tube stock cooling box in sequence at 100-150 m / min, so that the tube is infiltrated and cleaned, the residual cleanser is blown down, the soft brazing material is infiltrated, the coating thickness of the soft brazing material is uniformed, and the tube stock is infiltrated and cooled to the normal temperature. The process for online coating the soft brazing material on the surface of the copper alloy high-frequency welded tube for the heat exchanger is fast in coating speed, high in efficiency, low in cost, and simple to operate; and the method is simple.
Description
technical field [0001] The invention relates to an on-line coating process of soft brazing material on the surface of a copper alloy high-frequency welded pipe, in particular to an on-line coating process of the soft brazing material on the surface of a copper alloy high-frequency welded pipe for heat exchangers. Background technique [0002] In some special industries, such as construction machinery, field generator sets, military equipment, high-humidity and high-salt environments and other special equipment and conditions, due to the special requirements of the power unit and the high corrosiveness of the environment, the heat exchangers responsible for its heat dissipation use ordinary conditions Common heat exchange equipment such as aluminum alloy radiators and bite copper tube radiators cannot meet the requirements of corrosion resistance and high pressure resistance. At present, copper alloy high-frequency welded pipes can be produced in China. The brazing material o...
Claims
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IPC IPC(8): B05D7/24B05D3/00B05C11/06B05C11/10
Inventor 孙燕水刘景平孙爽爽梅望生张杰
Owner 广州大华仁盛铝合金管业有限公司