Treatment method for deformation of massive lost foam

A treatment method and lost foam technology, applied in casting molding equipment, molds, cores, etc., can solve the problem of high surface finish, and achieve the effect of high surface finish, simplified modeling process, and easy dust removal.

Inactive Publication Date: 2011-11-02
翼城县福旺铸造实业有限公司
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a treatment method for large-scale lost foam deformation, which effectively solves the deformation problem of large-scale lost foam, reduces artificial defects and waste products, and produces products with high precision and smooth surface. high

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Embodiment Construction

[0014] A treatment method for large-scale lost foam deformation, taking CW6163E-10101 / 1.5m bed body as an example, introduces deformation treatment, including the following steps:

[0015] 1) Anti-deformation treatment: Make the part of the casting that is easily deformed into a concave shape into a convex shape on the white mold;

[0016] 2) Correction of the deformed white mold; the white mold must be separated from the mold after forming, and some deformation and under-cured or matured phenomena will inevitably appear during the demoulding process. When inspecting white molds, in addition to scrapping some irreparable ones, there are still a large part that need to be repaired manually before they can be restored to use. Correction is carried out in three ways: ①Ten-stretching type: Some white molds bow outward after secondary curing, especially for long pieces, such as beds exceeding 1.5m, which are prone to such problems. When the outward deformation of the white mold ex...

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Abstract

The invention relates to a treatment method for deformation of massive lost foam. The method comprises the following steps of: correcting a deformed white die, recovering the corrected white die, making a shelf in accordance with the shape of the white die by using square steel, making anti-deformation radian, fixing the white die on the shelf, hanging the white die together with the fixing shelf, filling rugged dead angles on the white die subjected to shakeout vibration by using resin sand, spreading bottom sand in a sand box, flatly placing the white die on the bottom sand in the sand box,fixing the easily deformed part of the white die by using a refractory brick, and starting uniform shakeout, wherein the front and back, left and right height fall does not exceed 15 centimeters; compacting for 45 seconds; and finally discharging the top sand, and performing compaction after the top sand is flush with the upper opening of the sand box. By the method, the deformation problem of the massive lost foam is effectively solved, human-made defects and waste products are reduced, and the produced product has high precision and high surface finishment.

Description

technical field [0001] The invention belongs to the casting process, and in particular relates to a processing method for large lost foam deformation. Background technique [0002] The lost foam casting process is currently the most advanced casting process in the world. It has the advantages of high casting dimensional accuracy, simple process, less equipment investment, and less environmental pollution. Foundry Green Engineering". At present, the "EPC" casting process is gradually being applied in the casting field due to its unique advantages. It is the direction of the development of advanced casting technology in the 21st century. It is suitable for castings with simple geometric shapes, and more suitable for the production of difficult and high-precision castings. [0003] The "EPC" casting process is one of the advanced processes that are currently being promoted and used in the foundry industry at home and abroad. The feature of this process is that it is highly ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/12
Inventor 李复旺
Owner 翼城县福旺铸造实业有限公司
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