Method and system for improving fired mold precision casting formwork surface layer quality and medium

A technology of investment precision casting and mold shell surface, which is applied in the direction of casting molding equipment, molds, and mold components. Clean the surface and inner cavity of the mold to reduce internal inclusions and improve surface quality

Inactive Publication Date: 2020-05-15
ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing technical means mainly use ethers such as propylene glycol methyl ether to clean the wax mold, which often cannot completely clean the surface and inner cavity of the wax mold, nor can it ensure sufficient contact between the surface layer slurry

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  • Method and system for improving fired mold precision casting formwork surface layer quality and medium
  • Method and system for improving fired mold precision casting formwork surface layer quality and medium

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Embodiment Construction

[0034] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0035] According to the method provided by the invention, before the surface layer of the mold shell is prepared on the surface of the wax mold, the wax mold is carried out by using an alkyl glycoside nonionic surfactant and disodium lauryl polyoxyethylene ether sulfosuccinate as a wax mold surface cleaner surface cleaning;

[0036] When preparing the surface layer of the mold shell, polyoxyethylene ether surfactants are added to the surface layer slurry; the invention can be used for cleaning wax patte...

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Abstract

The invention provides a method and system for improving the fired mold precision casting formwork surface layer quality and a medium. The method comprises the steps of 1, cleaning the surface of a waxy mold before a formwork surface layer is prepared on the surface of the waxy film; 2, before the formwork surface layer is prepared, adding a surface wetting agent into formwork surface layer slurry, and performing stirring to be uniform; 3, immersing the waxy mold into the formwork surface layer slurry with the inclination angle of 45 degrees; 4, taking out the waxy mold, and pouring sand; 5, determining whether or not the surface of the waxy mold and an inner cavity are completely covered with casting sand. The casting surface quality is improved, internal inclusions are reduced, and the method can be used for manufacturing precision casting formwork surface layers of various alloys. The method can be used for waxy mold cleaning and formwork surface layer preparation procedures for precision casting of various fired molds such as low-temperature wax and medium-temperature wax.

Description

technical field [0001] The invention relates to the field of investment precision casting, in particular to a method, system and medium for improving the quality of the shell surface layer of investment precision casting. Background technique [0002] The outline size of the overall wax mold for large complex thin-walled precision castings often exceeds 1m, and there are often complex structures such as numerous bosses and cavities. Therefore, when using wax molds to make shells, the uniformity of surface slurry coating Very difficult. [0003] The problem caused by uneven coating on the surface of the wax pattern is that the surface layer of the mold shell is uneven or even leaked, which eventually makes the surface roughness of the casting, and it is easy to increase the inclusions inside the casting due to the peeling off of the surface layer mold shell. Therefore, improving the slurry coatability of the mold shell surface layer on the surface of the wax pattern is an im...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22C7/02
CPCB22C7/02B22C9/04
Inventor 王俊李建中姚满
Owner ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO
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