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An open diversion lost foam casting process

An open technology of lost foam casting, applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve problems such as sand inflow, segregation, subcutaneous air hole cavity, etc., achieve easy operation, simple process, and eliminate process defects Effect

Active Publication Date: 2021-05-07
晋城市金工铸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing lost foam process technology, to provide an open diversion lost foam casting process, to solve the problem of carburization, carbon segregation, subcutaneous pores and Technical problems such as cavity sand feeding

Method used

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  • An open diversion lost foam casting process
  • An open diversion lost foam casting process
  • An open diversion lost foam casting process

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as Figure 1 to Figure 4 A kind of open infusion lost foam casting process shown, comprises the following steps:

[0023] 1) Manufacture the foam model of lost foam parts: Add styrene and methyl methacrylate copolymer materials into the pre-foaming machine for pre-foaming, and then foam molding in the molding mold according to the shape of the parts to manufacture the parts that meet the technical requirements of the drawings Part model;

[0024] 2) Prepare EPS foam slices: cut EPS foam, EPS foam slices with a length of 40-50 mm, a width of 25-30 mm, and a thickness of 4-7 mm;

[0025] 3) Paste the EPS foam slice: paste the EPS foam slice on the foam model of the lost foam part corresponding to the position where the surface defect of the lost foam part is prone to occur:

[0026] 4) Dip-coating refractory material: Dip-coat ref...

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Abstract

An open diversion lost foam casting process belongs to the technical field of lost foam casting. The invention mainly solves the problems such as carburization, carbon segregation, subcutaneous air holes and cavity sand entering which are easy to occur when the existing lost foam process produces cast steel parts. question. The technical solution of the present invention is: an open diversion lost foam casting process, comprising the following steps: 1) manufacturing the foam model of lost foam parts; 2) preparing EPS foam slices; 3) pasting EPS foam slices: 4) dip coating Refractory materials; 5) Processing of EPS foam slices; 6) Box molding; 7) Melting and casting; 8) Molding sand recovery; 9) Casting cleaning; 10) Heat treatment. The invention has the advantages of effectively eliminating process defects, simple process and easy operation.

Description

technical field [0001] The invention belongs to the technical field of lost foam casting, and in particular relates to an open diversion lost foam casting process. Background technique [0002] The lost foam casting technology is to bond and combine foamed plastic models with the same size and shape as the castings to form a model cluster. After brushing with a refractory coating and drying, they are buried in dry pearl sand (quartz sand) for vibration molding. Under certain conditions The method of pouring liquid metal, vaporizing the model and occupying the position of the model, solidifying and cooling to form the required casting. Compared with the traditional casting technology, due to the use of highly gasified foam plastics to make the model, there is no need to take the mold and make the mold core, and there is no parting surface, so there is no flash or burr. This process completely abandons the traditional process. The unfavorable factors of large pollutant discha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/04B22C7/02C21C7/06
CPCB22C7/023B22C9/04C21C7/06
Inventor 王银花王喜春王瑨璐赵平敦马鹏雷
Owner 晋城市金工铸业有限公司
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