Pipeline electrostatic spraying process
A technology of electrostatic spraying and electrostatic spraying gun, applied in electrostatic spraying device, liquid spraying equipment, coating and other directions, can solve the problems of reducing the protective effect of the coating on the pipeline, pollution of the coating on the inner wall of the pipeline, contamination of the inner wall of the pipeline, etc., so as to improve the protection. effect, convenient heating method, and the effect of improving painting efficiency
Active Publication Date: 2019-02-15
杭州奔宇科技有限公司
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- Application Information
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Problems solved by technology
[0004] The above-mentioned existing technical solutions have the following defects: the paint diffuses in the air in a mist state, and may spread to the inner wall of the pipeline to cause the inner wall of the pipeline to be contaminated with paint on the outer wall, which in turn causes the coating on the inner wall of the pipeline to be polluted, making the coating on the inner wall of the pipeline contaminated. The protective effect of the pipeline is reduced
Method used
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[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0034] A pipeline electrostatic spraying process, comprising the following steps:
[0035] Step S1 : pretreatment, using a sandblasting machine to perform sandblasting cleaning on the inner wall of the pipeline 1, and then performing sandblasting cleaning on the outer wall of the pipeline 1. The impact angle between the abrasive and the contact surface of the pipe 1 is 5°~10°, and the highly moving abrasive is used to impact the pipe 1, so as to remove the rust and sundries on the surface of the pipe 1.
[0036] Step S2: Install pipeline 1, such as figure 1 As shown, open the lower cover 3 at the lower end of the painting tooling 2, then place the pipeline 1 in the painting tooling 2, and the upper end of the pipeline 1 is in contact with the second conductive ring 13 at the upper end of the painting tooling 2. Utilize the lower cover 3 to close the opening...
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The invention discloses a pipeline electrostatic spraying process and belongs to the field of pipeline production processes. According to the technical scheme, the pipeline electrostatic spraying process comprises the following steps: 1, pretreatment, 2, pipeline installation, 3, spraying of primer, 4, electrostatic primer coating, 5, ventilation, 6, drying, 7, spraying of finish paint, 8, electrostatic spraying of finish paint, 9, ventilation, 10, drying and 11, removing of a pipeline, specifically, in the step 2, the pipeline is placed in a spraying tool via an opening in the lower end of the spraying tool, and the pipeline divides the space in the spraying tool into a first cavity and a second cavity which do not communicate; and in the step 3, inner wall primer paint is sprayed to thefirst cavity through a first electrostatic spray gun, and outer wall primer paint is sprayed to the second cavity through a second electrostatic spray gun. The pipeline electrostatic spraying processhas the effect of improving the protective effect of the paint.
Description
technical field [0001] The invention relates to a pipeline production process, more specifically, it relates to a pipeline electrostatic spraying process. Background technique [0002] A pipeline is a device used to transport gas, liquid or fluid with solid particles connected by pipes, pipe connectors and valves. Because the inner wall of the pipeline is in contact with the fluid it needs to transport, while the outer wall is in contact with air, moisture and soil, so the media in contact with the inner and outer walls of the pipeline are different. In order to protect the pipeline more effectively, the inner and outer coatings of the pipeline are different. [0003] At present, the electrostatic spraying method is commonly used. When spraying paint on the outer wall of the pipeline, the paint uses the nozzle to make it float in the air in the form of mist and spread in the air. During the spraying process, the paint is charged, and then charged under the action of an exter...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B05B5/08B05B5/12B05B5/14B05D3/02B05D7/22
CPCB05B5/087B05B5/12B05B5/14B05D3/0254B05D7/222B05D2254/06
Inventor 李宏
Owner 杭州奔宇科技有限公司