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Casting process of corrosion-resistant pipeline valve

A technology of pipeline valve and casting process, applied in manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of complex valve casting process and low valve quality, achieve simple and easy casting process, improve dispersion and compatibility properties, good corrosion resistance and flame retardancy

Inactive Publication Date: 2018-04-06
郑媛媛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The valve (famen) is a control component in the fluid delivery system. It has functions such as cut-off, adjustment, flow diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems, from the simplest cut-off valve Various valves used in extremely complex automatic control systems have a wide variety of varieties and specifications. Valves can be used to control various types of air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. For fluid flow, valves are divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, duplex steel valves, plastic valves, and non-standard orders according to their materials. At present, valves are often used in petroleum, chemical, metallurgy and other industrial fields. The materials used in the preparation of valves are often metal materials. While the hardness of the metal needs to be improved, its wear resistance and anti-corrosion ability also need to be improved. Moreover, the casting process of the existing valves is complicated, and the quality of the cast valves is not high

Method used

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  • Casting process of corrosion-resistant pipeline valve

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Effect test

Embodiment 1

[0028] This embodiment provides a casting process for a corrosion-resistant pipeline valve. The valve includes a valve body and a protective layer coated on the valve body. The casting process for modifying the valve specifically includes the following steps:

[0029] (1) According to the shape of the valve, use quartz sand, water glass and bentonite as modeling materials to make a corresponding mold, and open a gate on the mold, and then blow the mold with warm air, and then place it in Dry in the oven at 150°C, ready for use;

[0030] (2) Transport the raw materials used to manufacture the valve to the smelting electric furnace for smelting treatment to obtain the mother liquor;

[0031] (3) Pour the mother liquor into a mold preheated to 200°C. After pouring, keep it warm for 30 minutes to obtain a valve ingot;

[0032] (4) Grind the obtained valve ingot with sandpaper, and then clean the polished surface with acetone, and then dry it naturally. After drying, the surface of the obt...

Embodiment 2

[0045] This embodiment provides a casting process for a corrosion-resistant pipeline valve. The valve includes a valve body and a protective layer coated on the valve body. The casting process for modifying the valve specifically includes the following steps:

[0046] (1) According to the shape of the valve, use quartz sand, water glass and bentonite as modeling materials to make a corresponding mold, and open a gate on the mold, and then blow the mold with warm air, and then place it in Dry it in the oven at 190℃, ready for use;

[0047] (2) Transport the raw materials used to manufacture the valve to the smelting electric furnace for smelting treatment to obtain the mother liquor;

[0048] (3) Pour the mother liquor into a mold preheated to 300°C, after pouring, keep it warm for 40 minutes to obtain a valve ingot;

[0049] (4) Grind the obtained valve ingot with sandpaper, and then clean the polished surface with acetone, and then dry it naturally. After drying, the surface of the o...

Embodiment 3

[0062] This embodiment provides a casting process for a corrosion-resistant pipeline valve. The valve includes a valve body and a protective layer coated on the valve body. The casting process for modifying the valve specifically includes the following steps:

[0063] (1) According to the shape of the valve, use quartz sand, water glass and bentonite as modeling materials to make a corresponding mold, and open a gate on the mold, and then blow the mold with warm air, and then place it in Dry in the oven at 170°C, ready for use;

[0064] (2) Transport the raw materials used to manufacture the valve to the smelting electric furnace for smelting treatment to obtain the mother liquor;

[0065] (3) Pour the mother liquor into a mold preheated to 250°C. After pouring, keep it warm for 35 minutes to obtain a valve ingot;

[0066] (4) Grind the obtained valve ingot with sandpaper, and then clean the polished surface with acetone, and then dry it naturally. After drying, the surface of the obt...

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Abstract

The invention discloses a casting process of a corrosion-resistant pipeline valve. The valve comprises a valve body and a protecting layer coating the valve body. The casting process of the valve specifically includes the following steps of manufacturing of a casting mold, melting, pouring, grinding, heat treatment and coating of the protecting layer. The casting process is simple and easy to implement, and low in casting cost, the cast valve has good corrosion resistance, and the service life is prolonged.

Description

Technical field [0001] The invention relates to a valve, in particular to a casting process of a corrosion-resistant pipeline valve. Background technique [0002] The valve (famen) is the control component in the fluid conveying system. It has the functions of cut-off, regulation, diversion, prevention of reverse flow, stabilization, diversion or overflow and pressure relief. The valve used in the fluid control system, from the simplest cut-off valve Various valves used in extremely complex automatic control systems have many varieties and specifications. Valves can be used to control air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. According to the fluid flow, valves are divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, non-standard order At present, valves are often used in ...

Claims

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Application Information

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IPC IPC(8): B22C9/24C21D1/26C21D1/18C21D9/00C09D5/08C09D163/00
CPCB22C9/24C09D5/08C09D163/00C21D1/18C21D1/26C21D9/0068
Inventor 郑媛媛
Owner 郑媛媛
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