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Coating method of corrugated pipe assembly for high-voltage switch

A technology of bellows assembly and high-voltage switch, which is applied to devices for coating liquid on surfaces, coatings, pre-treatment surfaces, etc., can solve the problems of reduced coating bonding force in local areas, coating damage, and economic losses of enterprises, etc. Achieve the effect of ensuring safe service and improving the pass rate

Pending Publication Date: 2019-09-03
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Oil stains remain in the gaps of the bellows. When coating is carried out under this condition, the oil stains are sealed under the coating, and the coating is eroded as the oil stains slowly flow out. The service time of the switch is getting longer and longer, and the bonding force of the coating in some areas is reduced. , eventually causing premature destruction of the coating from localized areas
Therefore, after the switch is put into operation, although the overall condition of the coating remains good, peeling and blistering will gradually appear in some areas of the bellows coating, and then spread to a large area, affecting the overall protection of the switch. Corrosion effect, the coating maintenance caused by such problems has caused great economic losses to the enterprise

Method used

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  • Coating method of corrugated pipe assembly for high-voltage switch
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Examples

Experimental program
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Effect test

Embodiment 1

[0027] The coating method of the bellows assembly of the present embodiment comprises the following steps:

[0028] 1) Grind the bellows assembly as a whole, using 80# sandpaper for grinding; then clean it with 93# gasoline until no scale and oil stains appear on the surface of the bellows assembly; then put the cleaned bellows assembly into the drying furnace , heated to 50°C and baked for 15 minutes.

[0029] 2) Use 80# sandpaper to polish around the connection between the bellows component hole 7 and the flange 6, and then use 93# gasoline to clean it until no dirt particles appear near the hole 7 bonded with tape (tape brand Happy Unified brand); then put the cleaned bellows assembly into a drying oven, heat it to 50°C and keep it warm for 15 minutes.

[0030] 3) Spray the primer twice continuously on the surface of the bellows assembly, and the spraying pressure is 0.3Mpa.

[0031] 4) Baking the corrugated pipe assembly sprayed with the primer at 80° C. for 30 minutes t...

Embodiment 2

[0035] The coating method of the bellows assembly of the present embodiment comprises the following steps:

[0036] 1) Grind the bellows assembly as a whole, using 100# sandpaper for grinding; then clean it with 93# gasoline until no scale and oil stains appear on the surface; then put the cleaned bellows assembly into a drying furnace and heat it Bake at 55°C and keep warm for 12 minutes.

[0037] 2) Use 100# sandpaper to polish around the connection between the bellows component hole 7 and the flange 6, and then clean it with 93# gasoline until no dirt particles appear near the hole 7 bonded with tape (tape brand for Happy Unification brand); then put the cleaned bellows assembly into a drying oven, heat it to 55°C and keep it warm for 12 minutes.

[0038] 3) Spray the primer twice continuously on the surface of the bellows assembly, and the spraying pressure is 0.4MPa.

[0039] 4) Baking the corrugated pipe assembly after spraying the primer at 100° C. for 40 minutes to d...

Embodiment 3

[0043] The coating method of the bellows assembly of the present embodiment comprises the following steps:

[0044] 1) Grind the bellows assembly as a whole, using 80# sandpaper for grinding; then clean it with 93# gasoline until no scale and oil stains appear on the surface; then put the cleaned bellows assembly into a drying furnace and heat Bake at 45°C and keep warm for 15 minutes.

[0045] 2) Use 100# sandpaper to polish around the connection between the bellows component hole 7 and the flange 6, and then clean it with 93# gasoline until no dirt particles appear near the hole 7 bonded with tape (tape brand for the Happy Unification brand); then put the cleaned bellows assembly into a drying oven, heat it to 45°C and keep it warm for 15 minutes.

[0046] 3) Spray the primer twice continuously on the surface of the bellows assembly, and the spraying pressure is 0.4MPa.

[0047] 4) Baking the corrugated pipe assembly after spraying the primer at 100° C. for 40 minutes to d...

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Abstract

The invention relates to a coating method of a corrugated pipe assembly for a high-voltage switch, and belongs to the technical field of coating. The method comprises the steps that gasoline is used for cleaning the corrugated pipe assembly, then, heating and baking are performed under the temperature of 45-55 DEG C, then, gasoline is used for performing key local cleaning and heating baking underthe temperature of 45-55 DEG C on the corrugated pipe assembly, oil stains at gaps of parts are thoroughly cleaned away, oil stains are volatilized or carbonized, the method can improve the cleaningefficiency and quality of the corrugated pipe assembly, binding force of a film is improved, according to the coating product obtained through the method, the yield is greatly increased, the coating adhesive force reaches level 0-1, and the safety service of the high-voltage switch and safety operation of a power grid are ensured.

Description

technical field [0001] The invention relates to a coating method for a bellows assembly for a high-voltage switch, and belongs to the technical field of coating. Background technique [0002] The stainless steel bellows assembly is an important part to ensure the installation accuracy of the high-voltage switch. It is mainly used to adjust the distance between the discrete units of the switch. Whether the airtightness of the high-voltage switch is good or not is closely related to whether it can work safely in the later stage, so the assembly of stainless steel bellows is first installed and debugged before painting. The installation process uses a large number of standard parts such as threads, nuts, gaskets, etc., and it is very easy to introduce lubricating oil, grease, etc. into the gaps of the components. In order to ensure that the coating quality meets the requirements of use, the grease in the gaps must be completely removed during the coating process. [0003] At ...

Claims

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Application Information

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IPC IPC(8): B05D7/14B05D7/00B05D3/02
CPCB05D7/14B05D7/544B05D3/0218B05D3/0254B05D2202/15
Inventor 李宝增林生军张红恩乔会杰庞亚娟谢美芳姚彦芳苗晓军
Owner PINGGAO GRP
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