Manufacturing method for high-strength valve body

A manufacturing method and high-strength technology, applied in the direction of manufacturing tools, casting molding equipment, process efficiency improvement, etc., can solve the problems of high strength, low strength, poor processing performance and corrosion resistance, etc., to improve mechanical strength, optimize Effect of manufacturing process and good corrosion resistance

Inactive Publication Date: 2017-10-17
YANGZHONG FIRST BUTTERFLY VALVE FACTORY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary materials, good corrosion resistance, low strength; hig

Method used

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Examples

Experimental program
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Example Embodiment

[0022] The present invention will be further described below in conjunction with specific embodiments:

[0023] A method for manufacturing a high-strength valve body includes the following steps:

[0024] (1) Make a mold according to the shape of the hydraulic valve body, and apply paint on the inner wall of the mold; the material for making the mold is a resin sand core, and the resin core sand includes the following components in parts by mass: Quartz sand: 70~ 80 parts, phenolic furan resin sand: 3 to 5 parts, toluenesulfonic acid alcohol: 20 to 30 parts, KH550 coupling agent: 2 to 4 parts; the coating applied on the inner wall of the mold includes the following mass parts: zircon Powder: 90 to 93 parts, phenolic resin: 2 to 4 parts, organic bentonite: 1.5 to 2.5 parts, composite iron titanium: 0.2 to 0.6 parts, titanium dioxide: 0.5 to 1 part, tetra-n-butyl titanate: 1 to 2 parts .

[0025] (2) Smelting the casting raw materials of the corrosion-resistant copper alloy valve bod...

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PUM

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Abstract

The invention discloses a manufacturing method for a high-strength valve body. The manufacturing method for the high-strength valve body comprises the following steps of mold making, smelting, pouring, softening annealing, mechanical machining, heat treatment, passivation treatment and phosphating treatment. According to the manufacturing method for the high-strength valve body, the proportion of raw materials is reasonable, the manufacturing technology is optimized, so that the mechanical strength of the valve body is greatly improved, and meanwhile, the valve body has excellent corrosion resistance, the quality of the valve body is ensured, and the service life of the valve body is effectively prolonged.

Description

technical field [0001] The invention relates to a manufacturing process of a valve body, in particular to a manufacturing method of a high-strength valve body. Background technique [0002] The valve body is a major part of the valve, which can effectively withstand the medium pressure after forming a seal with the valve core and the valve seat sealing ring. The material of the valve body is selected according to different process media. According to the material, it can be divided into cast iron valve body, carbon steel valve body, copper alloy valve body and so on. Ordinary materials have good corrosion resistance but low strength; high strength has poor processability and corrosion resistance. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the invention provides a method for manufacturing a high-strength valve body. [0004] In order to solve the above technical problems, the present invention adopts the following technical...

Claims

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Application Information

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IPC IPC(8): B22C9/22C21D1/18C21D9/00C21D1/32B22C3/00B22C1/00C23C22/40C23C22/07C22C38/02C22C38/04C22C38/52C22C38/46C22C38/44C22C38/42C22C38/06C22C38/54C22C38/60C22C38/50
CPCB22C1/00B22C3/00B22C9/22C21D1/18C21D1/32C21D9/00C22C38/002C22C38/008C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50C22C38/52C22C38/54C22C38/60C23C22/07C23C22/40Y02P10/20
Inventor 许瑞华
Owner YANGZHONG FIRST BUTTERFLY VALVE FACTORY
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