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Casting process for high-temperature water-pressure-resisting combined flange

A casting process and combined technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of cracks, blisters, and increased production costs in steel castings, so as to eliminate stress, improve toughness, and ensure high The effect of hardness

Inactive Publication Date: 2016-06-22
DAFENG HONGLIAN CAST STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional casting design and production methods can no longer meet the requirements of the market for enterprises. Foundry enterprises must change the traditional production methods and introduce new technologies and methods
At present, in the steel casting industry, when casting steel castings, it is usually necessary to manufacture molds, cast and then carry out post-processing of castings. The process is relatively cumbersome. Product quality has caused great difficulties for subsequent processing and increased production costs

Method used

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  • Casting process for high-temperature water-pressure-resisting combined flange

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] This example provides a casting process for a high-temperature and water-pressure-resistant combined flange, which casts a high-temperature wear-resistant combined flange structure such as figure 1 As shown, the high-temperature wear-resistant combined flange mainly includes a flange body, the flange body is composed of a first flange 1 and a second flange 2, and the second flange 2 and the first flange 1 are about Set symmetrically, and the shape and size of the second flange 2 are consistent with the first flange 1, wherein:

[0046] Both the first flange 1 and the second flange 2 are of saddle-shaped structure, and the first flange 1 is evenly distributed with threaded holes 3 and through holes 4, and the threaded holes 3 and through holes 4 are spaced apart. The two ends of a flange 1 respectively extend outward to form a fixed side 5, the fixed side 5 is provided with a fixing hole, and at least two lugs 6 are provided on the outer edge of the first flange 1;

[0...

Embodiment 2

[0064] This embodiment provides the casting process of the high temperature and water pressure resistant combined flange of embodiment 1,

[0065] The casting process of the flange body specifically includes the following steps:

[0066] (1) According to the size of the flange body, sea sand, bentonite, additives and water are used as molding materials to mix the mold in the sand box, and the rough surface of the mold is sequentially painted, sanded, air-dried, hardened and air-dried. The dry process obtains the casting mold of the flange body for use;

[0067] The molding materials are as follows in terms of mass percentage: sea sand: 80%, water glass 5%, bentonite: 4%, dextrin: 1%, and water 10%, sea sand is 50 mesh sea sand;

[0068] 270-mesh quartz powder paint is applied to the surface of the casting mold, and chromite resin sand with a thickness of 20mm is sprinkled when sanding;

[0069] (2) Smelt the raw material of the flange body to obtain the raw material liquid. ...

Embodiment 3

[0081] This embodiment provides the casting process of the high temperature and water pressure resistant combined flange of embodiment 1,

[0082] The casting process of the flange body specifically includes the following steps:

[0083] (1) According to the size of the flange body, sea sand, bentonite, additives and water are used as molding materials to mix the mold in the sand box, and the rough surface of the mold is sequentially painted, sanded, air-dried, hardened and air-dried. The dry process obtains the casting mold of the flange body for use;

[0084] The molding materials are as follows in terms of mass percentage: sea sand: 80%, water glass 5%, bentonite: 4%, dextrin: 1%, and water 10%, sea sand is 60 mesh sea sand;

[0085] 270-mesh quartz powder paint is applied to the surface of the casting mold, and chromite resin sand with a thickness of 35mm is sprinkled when sanding;

[0086] (2) Smelt the raw material of the flange body to obtain the raw material liquid. ...

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Abstract

The invention discloses a casting process for a high-temperature water-pressure-resisting combined flange. The cast high-temperature wear-resisting combined flange mainly comprises a flange body. The flange body is composed of a first flange plate and a second flange plate. The shape and the size of the second flange plate are the same as those of the first flange plate. The first flange plate and the second flange plate are each of a saddle-shaped structure. Threaded holes and through holes are evenly distributed in the first flange plate and distributed at intervals. The two ends of the first flange plate extend outwards to form fixing edges. Fixing holes are formed in the fixing edges. At least two lug plates are arranged on the edge of the outer side of the first flange plate. The first flange plate and the second flange plate are connected together in a fastened manner through bolts after butting the fixing holes in the fixing edges, and the first flange plate and the second flange plate are connected in the fastened manner to form a mounting hole. The casting process is simple and easy to implement. The cast combined flange is simple in structure and has good high-temperature water-pressure-resisting performance, the service life of the flange is prolonged, and cost is lowered.

Description

technical field [0001] The invention relates to a casting process of a flange, in particular to a casting process of a high temperature and water pressure resistant combined flange, which belongs to the field of casting technology. Background technique [0002] Flanges, also known as flange flanges or flanges, are parts that are connected to each other between pipes. They are used for connection between pipe ends, and are also useful for flanges on equipment inlets. The connection between equipment, such as reducer flange, etc., flange connection or flange joint refers to the detachable connection of flange, gasket and bolt as a group of combined sealing structure. Refers to the flange used for piping in the pipeline installation. When used on equipment, it refers to the inlet and outlet flanges of the equipment. There are holes on the flange, and the bolts make the two flanges tightly connected. The gasket is used to seal the flanges. The flanges are connected by threads. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/22C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/50
CPCB22C9/22C22C38/001C22C38/002C22C38/008C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/50
Inventor 吴卫明吴正平
Owner DAFENG HONGLIAN CAST STEEL
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