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Flange casting production process

A technology of casting production and production technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of low utilization rate of casting melt, low pouring quality, and many processing procedures, so as to save time and labor, The effect of improving pouring quality and less processing steps

Inactive Publication Date: 2010-11-03
WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems existing in the prior art that there are many processing steps, low utilization rate of casting melt, and low pouring quality, and provide a casting with less processing steps, high utilization rate of casting melt, Casting production process of flange with good pouring quality

Method used

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Embodiment 1

[0020] A flange casting production process, firstly make the flange plate mold and the plate hole mold respectively, then put the flange plate mold and the plate hole mold into the sand mold box respectively, and pile up molding sand around it to make the flange plate Core and disc hole core, the molding sand is made of quartz sand, resin sand and water glass, the mass percentage of quartz sand, resin sand and water glass is 80% of quartz sand, 10% of resin sand, and 10% of water glass, and the mixing time is 5 minutes , and then assemble the flange core and the disc hole core together, and then bake the core. After the core is baked, the flange mold is obtained, and then the flange mold is preheated. The time is 2 hours, and then apply insulation material on the inner surface of the preheated flange mold, and then keep it warm. The pouring port is injected into the cavity, the pouring temperature is 1380°C, the pouring time is 12 seconds, and then the casting is kept warm for...

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Abstract

The invention discloses a flange casting production process, which comprises the steps of casting mould making, pouring and subsequent operations sequentially, and the casting mould making comprises the steps of making a flange mould and a flange hole mould respectively, then making a flange core and a flange hole core, then assembling the flange core and the flange hole core, and carrying out core baking to obtain the flange casting mould; then the pouring operation is carried out, which comprises the steps of preheating the flange casting mould at first, then painting a thermal insulation material on the inner surface of the preheated flange casting mould, insulating, and then pouring casting solution to a mould cavity along a pouring port of the flange casting mould, wherein the pouring port is internally provided with a honeycomb filter screen, the pouring temperature is 1330-1400 DEG C, the pouring time is 8-15 seconds; and then insulating the casting, wherein the casting insulation time is 15-25 minutes, and the production rate of the process is 40 percent to 60 percent. The process not only has few processing operations and improves the utilization rate of pouring solution but also is beneficial to formation of high-quality castings.

Description

technical field [0001] The invention relates to a flange manufacturing method, in particular to a flange casting production process, which is particularly suitable for integral casting of flanges on pumps or valves. Background technique [0002] At present, in the casting process of flange parts, at least one pair of molds for forming flange elbows and one pair of molds for flange inner cavity are provided, and then disc holes are drilled on the flange after casting. , the matching degree is high, and the accuracy of the plate hole cannot be guaranteed, and the scrap rate is high. [0003] The Chinese patent publication number is CN101020226A, and the disclosure date is August 22, 2007. The invention patent discloses a flange casting casting forming process. The process includes first manufacturing the shape mold, the flange casting main structure core box and the flange bolt hole core. box; sand core and sand mold preparation, first prepare the main structure sand core of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/00B22C1/00
Inventor 浦巧生
Owner WUJIANG HYDRAULIC COMPONENTS FOUNDRY
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