Application method of insulated feeder in evanescent mold casting

A technology of lost foam casting and heat preservation riser, which is applied to casting molding equipment, casting molds, casting mold components, etc., can solve the problems of short solidification time of molten metal, low utilization rate of molten iron, and difficulty in improving the yield of finished products. Metal melting and cutting riser costs, reducing sand and metal loss, and improving yield

Inactive Publication Date: 2018-06-08
天津万石科技发展有限公司
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Problems solved by technology

In the prior art, due to the short solidification time of molten metal, the feeding effect is poor, the utilization rate of molten iron is not high, and the yield is difficult to improve, the production cost is high, and the production efficiency is low
Especially when casting thick and large castings on lost foam, the utilization rate of molten iron is low, the yield is lower, and there will be a series of technical problems such as shrinkage cavity and shrinkage porosity

Method used

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  • Application method of insulated feeder in evanescent mold casting

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Embodiment 1

[0023] An application of heat preservation riser in lost foam casting. When casting castings on lost foam, the utilization rate of molten iron is improved by adding heat preservation riser, the cooling time of molten metal is prolonged, the feeding effect is enhanced, and the yield of castings is improved. . The position of increasing the insulation riser is on the left side of the casting, and the left insulation riser and the right gate are opposite to the two sides of the casting. The gate has a sprue, and the sprue is poured and cast through the upper and lower ingates.

[0024] The concrete implementation process of this embodiment:

[0025] The size of the casting is 700*700*1000mm, and the wall thickness is 100mm. A thermal insulation riser with a diameter of 140mm and a height of 200mm is placed on the upper left side of the casting. In the mold, after the molten iron is completely filled with the mold, during the cooling process of the molten iron, due to the slow c...

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Abstract

The invention relates to an application method of an insulated feeder in evanescent mold casting and belongs to the technical field of evanescent mold casting. The application method of the insulatedfeeder in evanescent mold casting is characterized in that the application of the insulted feeder in evanescent mold casting is that during evanescent mold casting, the insulated feeder is additionally arranged on a casting part evanescent mold to increase the utilization ratio of molten iron, prolong the cooling time of the molten metal, enhance the feeding effect and increase the yield of casting parts. The application method of the insulated feeder in evanescent mold casting has the beneficial effects that the molten metal solidification time is long, metal is saved, the feeding effect is good, the utilization ratio of the molten iron and the yield are high, the molding sand and metal loss is reduced, the energy is saved, labor is saved, the production cost of the casting parts is reduced, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of lost foam casting, and in particular relates to an application method of a thermal insulation riser in lost foam casting. Background technique [0002] At present, in production practice, many casting waste products are caused by shrinkage and shrinkage defects. In the prior art, due to the short solidification time of the molten metal, the feeding effect is poor, the utilization rate of the molten iron is not high, and the yield rate is difficult to improve, the production cost is high, and the production efficiency is low. Especially when casting thick and large castings on lost foam, the utilization rate of molten iron is low, the yield is lower, and a series of technical problems such as shrinkage cavity and shrinkage porosity will occur. Contents of the invention [0003] The present invention provides an application of a thermal insulation riser in lost foam casting in order to solve the technica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22C9/04B22D27/06
CPCB22C9/088B22C9/04B22D27/06
Inventor 石卫东马秋荟崔素朋李娜
Owner 天津万石科技发展有限公司
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