Surface coating process for radiator for transformer
A surface coating and radiator technology, which is applied to the device for coating liquid on the surface, pretreatment surface, coating, etc. and poor impact resistance, to achieve highly mechanized and automated production, improve mechanical strength and long-term corrosion resistance, and reduce emissions.
Pending Publication Date: 2022-04-22
SHENYANG TIANTONG ELECTRICITY
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Problems solved by technology
[0004] Among these anti-corrosion measures, the radiator is treated with hot-dip galvanizing, and the zinc slag on the surface of the zinc liquid is easy to hang on the surface and edge of the workpiece after the zinc liquid is discharged from the workpiece, which seriously affects the appearance of the product and the corrosion resistance requirements; the radiator is sprayed with paint. The surface tension of the paint film is different at each position of the workpiece, resulting in uneven thickness of the paint film, and poor corrosion resistance and impact resistance of the product; the radiator that has been galvanized and painted, although the surface coating has certain weather resistance and wear resistance , but cannot meet the long-term anti-corrosion performance needs
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[0030] Below in conjunction with accompanying drawing and specific embodiment, the present invention is further described, and the processing method in the embodiment, if no special instructions, is conventional method.
[0031] Step 1: Radiator pretreatment, refer to figure 1 As shown, it is a heat sink for a transformer of a certain specification. There are 25 pieces of cold-rolled steel plates welded into heat sink plates, with a length of 3600mm and a width of 520mm. The spacing between the plates is 32mm. Heat the radiator to 210°C in the drying kiln, and keep the temperature in the kiln for 20 minutes.
[0032] After the radiator is degreased at high temperature, the opening of the radiator header is closed, and then the surface is shot blasted. The shot blasting material is steel shot, with a diameter of 0.8mm~1mm, and the shot blasting amount: 80kg / m 2 ~120kg / m 2 , Continuous surface shot peening time 25s ~ 50s, no grease, dirt, scale and other attachments on the sur...
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Abstract
The invention discloses a surface coating process for a radiator for a transformer. The surface coating process comprises the following steps: 1) pre-treating the radiator; 2) performing electrophoresis pretreatment; 3) electrophoresis; 4) drying; 5) plastic spraying; (6) curing, wherein a conventional radiator surface coating treatment process is replaced; compared with an existing coating treatment process, the surface coating process for the radiator for the transformer, provided by the invention, not only improves the mechanical strength and the corrosion resistance of the workpiece surface, but also greatly reduces waste gas and waste liquid generated in the coating process, and achieves the long-acting corrosion prevention requirement of product coating and the development goal of environmental protection and energy conservation of enterprises.
Description
Technical field: [0001] The invention relates to the field of manufacturing radiators for transformers, in particular to a surface coating process for radiators for transformers. Background technique: [0002] The heat sink is used for the heat dissipation of the transformer. Due to the particularity of its working environment, the durability and long-term performance of the heat sink have become its important performance considerations, so the anti-rust and anti-corrosion of the heat sink has become an important research topic. [0003] At present, the commonly used anti-corrosion measures for oil-immersed transformer radiators are: hot-dip galvanizing treatment, the surface of the radiator is pre-treated, dipped in the plating solution, dried and preheated, hot-dip galvanized, cleaned, cooled, passivated, The process of rinsing, drying and inspection, through the electrochemical action of the surface zinc layer to achieve anti-corrosion protection for the radiator; paintin...
Claims
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IPC IPC(8): C25D13/12C25D13/20C25D13/22B05D1/06B05D3/02B05D7/14B05D7/24
CPCC25D13/12C25D13/20C25D13/22B05D7/24B05D1/06B05D3/0254B05D7/14
Inventor 刘航高志翔孙二亮王成帅贾瑶祝贺曲寿晴张立彬万成朴睿雄
Owner SHENYANG TIANTONG ELECTRICITY