Corrosion-resistant gate valve and processing technology thereof

A processing and corrosion-resistant technology, applied in anti-corrosion coatings, coatings, special surfaces, etc., can solve problems such as corrosion and affecting service life, and achieve the effects of reducing penetration, prolonging service life, and improving wettability

Inactive Publication Date: 2021-12-07
YUANKE VALVE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the current gate valve made of carbon steel is susceptible to corrosion due to the influence of the external environment during use, which affects the service life, so it still needs to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment discloses a corrosion-resistant gate valve and a processing technology thereof; a corrosion-resistant gate valve includes a valve body, the surface of the valve body is coated with a corrosion-resistant paint, and the corrosion-resistant paint includes the following components: polytetrafluoroethylene, diamino Maleonitrile, 1,5-hexadienol, N-(2,3-epoxypropyl)phthalimide, 1-octene, catalyst, zinc powder, solvent; wherein the catalyst is osmium tetroxide , the solvent is dioctyl phthalate.

[0053] A processing technology for a corrosion-resistant gate valve, comprising the following steps:

[0054] S1. Preparation of anti-corrosion coating; mix diaminomaleonitrile, 1,5-hexadienol, and N-(2,3-epoxypropyl)phthalimide, and stir the reaction at 30°C 50min to obtain a cyano compound;

[0055] The mixture of zinc powder and solvent was stirred at a rotational speed of 200 r / min, and a dispersed zinc solution was obtained after stirring for 8 minutes;

[0056...

Embodiment 2

[0061] This embodiment discloses a corrosion-resistant gate valve and a processing technology thereof; a corrosion-resistant gate valve includes a valve body, the surface of the valve body is coated with a corrosion-resistant paint, and the corrosion-resistant paint includes the following components: polytetrafluoroethylene, diamino Maleonitrile, 1,5-hexadienol, N-(2,3-epoxypropyl)phthalimide, 1-octene, catalyst, zinc powder, solvent; wherein the catalyst is osmium tetroxide , the solvent is dioctyl phthalate.

[0062] A processing technology for a corrosion-resistant gate valve, comprising the following steps:

[0063] S1. Preparation of anti-corrosion coating; mix diaminomaleonitrile, 1,5-hexadienol, N-(2,3-epoxypropyl)phthalimide, and stir the reaction at 40°C 60min to obtain a cyano compound;

[0064] The mixture of zinc powder and solvent was stirred at a rotational speed of 250 r / min, and a dispersed zinc solution was obtained after stirring for 12 min;

[0065] Mix t...

Embodiment 3

[0070] This embodiment discloses a corrosion-resistant gate valve and a processing technology thereof; a corrosion-resistant gate valve includes a valve body, the surface of the valve body is coated with a corrosion-resistant paint, and the corrosion-resistant paint includes the following components: polytetrafluoroethylene, diamino Maleonitrile, 1,5-hexadienol, N-(2,3-epoxypropyl)phthalimide, 1-octene, catalyst, zinc powder, solvent; wherein the catalyst is osmium tetroxide , the solvent is dioctyl phthalate.

[0071] A processing technology for a corrosion-resistant gate valve, comprising the following steps:

[0072] S1. Preparation of anti-corrosion coating; mix diaminomaleonitrile, 1,5-hexadienol, N-(2,3-epoxypropyl)phthalimide, and stir the reaction at 35°C 55min to obtain a cyano compound;

[0073] The mixture of zinc powder and solvent was stirred at a rotational speed of 230 r / min, and a dispersed zinc solution was obtained after stirring for 10 min;

[0074] Mix t...

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PUM

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Abstract

The invention relates to a corrosion-resistant gate valve and a processing technology thereof, the corrosion-resistant gate valve comprises a valve body, the surface of the valve body is coated with a corrosion-resistant coating, and the corrosion-resistant coating comprises the following components: polytetrafluoroethylene, diamino maleic nitrile, 1, 5-hexadienol, N-(2, 3-epoxypropyl) phthalimide, 1-octene, a catalyst, zinc powder and a solvent; and the processing technology of the corrosion-resistant gate valve comprises the steps of preparation of corrosion-resistant paint, pretreatment of a valve body and coating of the valve body with the corrosion-resistant coating. The process has the following advantages and effects: the polytetrafluoroethylene has excellent corrosion resistance; the diamino maleic nitrile, 1, 5-hexadienol and N-(2, 3-epoxypropyl) phthalimide are subjected to a reaction to obtain a cyano compound, and the cyano compound can well improve the adhesive force and the corrosion resistance of the coating; and the catalyst catalyzes ternary polymerization of polytetrafluoroethylene, 1-octylene and alkenyl contained in a cyano compound obtained through reaction, the density after film forming is improved, electrochemical corrosion is reduced, and the service life of the gate valve is prolonged.

Description

technical field [0001] The present application relates to the technical field of gate valves, in particular to a corrosion-resistant gate valve and a processing technology thereof. Background technique [0002] The gate valve is an opening and closing gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled; the gate valve is sealed through the contact between the valve seat and the gate, usually sealed The surface will be surfacing metal materials to increase wear resistance, such as surfacing 1Cr13, STL6, stainless steel, etc.; the gate has a rigid gate and an elastic gate. According to the difference of the gate, the gate valve is divided into a rigid gate valve and an elastic gate valve. [0003] The existing Chinese patent with publication number CN109667943A discloses a gate valve, which includes a valve body, a gate plate installed in the valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D5/10C09D7/62C09D7/20C09D7/65B05D3/02B05D5/00B05D7/14
CPCC09D151/003C09D5/106C09D7/62C09D7/20C09D7/65B05D5/00B05D7/14B05D3/0209B05D3/0254C08K2003/0893C08K3/08C08K9/04C08K3/26
Inventor 胡天豪
Owner YUANKE VALVE GRP CO LTD
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