Paint removing method and special paint remover for transformer coil pressing plate
A transformer coil and pressure plate technology, applied in the field of transformers, can solve problems such as difficult cleaning, long cleaning time, and low labor efficiency, and achieve the effects of low labor intensity, clean cleaning, and convenient configuration
Inactive Publication Date: 2014-09-03
BAODING TIANWEI SHUNDA TRANSFORMER
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Problems solved by technology
[0002] At present, the coils of open-type dry-type transformers are impregnated with iron pressing plates and then dipped in paint. The surface of the pressing plates is pre-painted with a paint remover. After dipping, the insulating paint on the press-fitting surface of the pressing plates needs to be cleaned; Use a hammer to remove the insulating paint on the surface. The problems are: long cleaning time, low labor efficiency, high cost, and difficult to clean.
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[0016] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.
[0017] A paint stripping method for a transformer coil pressure plate, the specific steps are as follows:
[0018] ① Mix polyvinyl alcohol powder and distilled water at a weight ratio of 15-20:100, heat to boiling to form a mixture of polyvinyl alcohol powder and distilled water, keep boiling for 3 hours, and stir once every half an hour during this period;
[0019] ② After the mixture of polyvinyl alcohol powder and distilled water drops to normal temperature, mix the mixture with silicon micropowder at a weight ratio of 100:40-50, stir evenly, and become a special paint remover;
[0020] ③Apply the special paint remover evenly on the pressure plate that needs to be dipped in paint, and brush it 2-3 times to form a coating on the pressure plate;
[0021] ④After 3-4 hours of natural drying, the coil is placed on the pressure plate, and the pain...
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The invention relates to a paint removing method and a special paint remover for a transformer coil pressing plate, belonging to the technical field of transformers. According to the technical scheme, the paint removing method comprises the following steps: mixing polyvinyl alcohol powder with distilled water in proportion; and after heating and boiling to form the mixture of the polyvinyl alcohol powder and the distilled water, adding silica powder and uniformly stirring to prepare the paint remover, wherein the polyvinyl alcohol powder and the distilled water are mixed according to the weight ratio of (15-20):100, the mixture is heated to be boiled, and the weight ratio of the mixture to the silica powder is 100: (40-50). The special paint remover is uniformly coated on the pressing plate to be subjected to dip coating; the paint remover is coated twice to three times to form a coating layer on the pressing plate; a coil is placed on the pressing plate to perform press-fit dip coating; and after the coil is dried, cured and moved out, the coating on the pressing plate is knocked by using an iron hammer, and the paint is removed from the coating layer of the pressing plate. According to the paint removing method and the special paint remover, the silica powder is added into the boiled polyvinyl alcohol to be uniformly stirred for use, so that the configuration is convenient, the cost is low, the paint film on the surface of the pressing plate can be very easily cleaned, the labor intensity is low, the efficiency is high and the paint can be cleaned.
Description
technical field [0001] The invention relates to a method for removing paint from a pressure plate of a transformer coil, belonging to the technical field of transformers. Background technique [0002] At present, the coils of open-type dry-type transformers are impregnated with iron pressing plates and then dipped in paint. The surface of the pressing plates is pre-painted with a paint remover. After dipping, the insulating paint on the press-fitting surface of the pressing plates needs to be cleaned; The insulating varnish on the surface is removed by beating with an iron hammer. However, there are problems in that the cleaning time is long, the labor efficiency is low, the cost is high, and it is difficult to clean up. Contents of the invention [0003] The purpose of the present invention is to provide a paint stripping method for transformer coil pressure plate, reduce cost, improve work efficiency, clean up, and solve the above-mentioned problems in the background tec...
Claims
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IPC IPC(8): C09D9/00
Inventor 赵峰高广涛高鹏凯
Owner BAODING TIANWEI SHUNDA TRANSFORMER