Check valve casting and machining process thereof

A processing technology and check valve technology, applied in the field of check valve castings and their processing technology, can solve the problems of large movement of check balls, large friction, easy wear of check valve castings, etc., so as to improve wear resistance, Good wear resistance, improve the effect of adhesion firmness

Active Publication Date: 2021-03-02
WENZHOU HAIGE VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: in the current spherical check valve, the check ball will move relatively large in the passage, and the friction is relatively large, so the casting of the check valve is prone to wear and tear during long-term practical application, affecting use, so there is still room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The application discloses a check valve casting and its processing technology. The surface of the check valve casting is treated with a surface treatment agent. The surface treatment agent includes the following raw materials: styrene-maleic anhydride copolymer, Cr 3 Si, 1,6-hexanediol diacrylate, 4-(benzylthiol)phenol, catalyst tetraethoxytitanium and isooctyl polyoxyether ester; the processing technique includes the following steps:

[0042] S1. surface treatment agent preparation; first styrene-maleic anhydride copolymer, isooctyl alcohol polyoxyether ester and Cr 3 Si was stirred and mixed for 5 minutes at a speed of 120r / min, and then 1,6-hexanediol diacrylate and catalyst tetraethoxytitanium were added, stirred and mixed, and the temperature was raised to 50°C, and 4-(benzylthio Alcohol) phenol stirs the product that obtains for 30min, finally stirs 1h, makes surface treatment agent, and insulation is stand-by;

[0043] S2. Thermal spraying; keep the check valve ...

Embodiment 2

[0047]The application discloses a check valve casting and its processing technology. The surface of the check valve casting is treated with a surface treatment agent. The surface treatment agent includes the following raw materials: styrene-maleic anhydride copolymer, Cr 3 Si, 1,6-hexanediol diacrylate, 4-(benzylthiol)phenol, catalyst tetraethoxytitanium and isooctyl polyoxyether ester; the processing technique includes the following steps:

[0048] S1. surface treatment agent preparation; first styrene-maleic anhydride copolymer, isooctyl alcohol polyoxyether ester and Cr 3 Si was stirred and mixed for 8 minutes at a speed of 150r / min, and then 1,6-hexanediol diacrylate and catalyst tetraethoxytitanium were added, stirred and mixed, and the temperature was raised to 60°C, and 4-(benzylthio Alcohol) phenol stirred the product obtained for 40min, and finally stirred for 1.5h to prepare a surface treatment agent, which was kept warm for later use;

[0049] S2. Thermal spraying;...

Embodiment 3

[0053] The application discloses a check valve casting and its processing technology. The surface of the check valve casting is treated with a surface treatment agent. The surface treatment agent includes the following raw materials: styrene-maleic anhydride copolymer, Cr 3 Si, 1,6-hexanediol diacrylate, 4-(benzylthiol)phenol, catalyst tetraethoxytitanium and isooctyl polyoxyether ester; the processing technique includes the following steps:

[0054] S1. surface treatment agent preparation; first styrene-maleic anhydride copolymer, isooctyl alcohol polyoxyether ester and Cr 3 Si was stirred and mixed for 7 minutes at a speed of 130r / min, and then 1,6-hexanediol diacrylate and catalyst tetraethoxytitanium were added, stirred and mixed, and the temperature was raised to 55°C, and 4-(benzylthio Alcohol) phenol stirred the product obtained for 35min, and finally stirred for 1.2h to prepare a surface treatment agent, which was kept warm for later use;

[0055] S2. Thermal spraying...

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PUM

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Abstract

The invention relates to the field of castings, and discloses a check valve casting and a machining process thereof. The surface of the check valve casting is treated by a surface treating agent, andthe surface treating agent comprises the following raw materials in parts by weight: 30-40 parts of styrene-maleic anhydride copolymer; 8-10 parts of Cr3Si; 4-6 parts of 1,6-hexanediol diacrylate; 6-8parts of 4-(benzylthio)phenol; 1-2 parts of a catalyst; and 40-50 parts of isooctyl alcohol polyoxy ether ester. The processing technology comprises the following steps: S1, preparing the surface treating agent; S2, conducting thermal spraying; and S3, carrying out post-processing treatment. Compared with the prior art, the invention has the following advantages and effects: Cr3Si is adopted to improve the wear resistance of the surface treating agent, the styrene-maleic anhydride copolymer and Cr3Si are blended to improve the dispersity, and the 1,6-hexanediol diacrylate and 4-(benzylthio)phenol products are further mixed to prepare a copolymerization mixture with large molecular weight and a compact structure; the wear resistance of the check valve casting is improved; and according tothe machining process, the modes of preheating, thermal spraying and hole sealing treatment are adopted, and the performance of the check valve casting is better.

Description

technical field [0001] The application relates to the field of castings, in particular to a check valve casting and its processing technology. Background technique [0002] Check valve castings are parts that can be assembled into check valves through casting. An automatic valve that is mainly used to prevent backflow of media, reverse rotation of pumps and drive motors, and discharge of container media; current check valve castings are usually made of stainless steel. [0003] At present, the patent with the publication number CN105422927A discloses a ball check valve, which includes a valve body and a spherical plugging valve core. One end has an outlet, and the flow channel in the valve body has a spherical plugging spool movable chamber, one end of the spherical plugging spool movable chamber communicates with the outlet, and the other end of the spherical plugging spool movable chamber has a valve port, The valve port communicates with the inlet port. [0004] The ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/61C09D7/63B05D7/16
CPCC09D4/06C09D7/61C09D7/63B05D7/16B05D2518/00B05D2601/20
Inventor 王良辉王茂杰
Owner WENZHOU HAIGE VALVE CO LTD
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