Environment-friendly preparation method for automobile engine shell

An automotive engine, environmentally friendly technology, used in casting molding equipment, molds, cores, etc., can solve the problems of difficult sand recovery, large environmental pollution, etc., to achieve favorable exhaust, reasonable coating composition, and increase yield Effect

Inactive Publication Date: 2016-06-01
青岛博泰美联化工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, ceramic sand is often used in the production process of investment precision casting. The mold shell broken after casting has difficulty in recycling the mold san...

Method used

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Embodiment Construction

[0014] The present invention will be further described below in combination with specific embodiments.

[0015] An environment-friendly preparation method for an automobile engine casing, characterized in that it comprises the steps of:

[0016] (1) Prepare the mold shell, including: a. prepare corresponding wax molds, pouring systems, risers according to the shape of the shell to be obtained, and bond them into wax mold groups; b. adopt suitable proportioning zircon powder, silicon Sol, fine wood chips, n-octanol, and cobalt aluminate are mixed and stirred to prepare the surface coating. After coating the wax module, the surface sand is hung. The surface sand components are alumina sand and fine wood chips. c. Use attapulgite with a suitable ratio Soil powder, mullite powder, crop straw fiber, and ethyl silicate hydrolyzate are mixed and stirred to prepare the back layer coating. After coating the wax model, hang the back sand, repeat the hanging back sand several times, seal...

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Abstract

The invention discloses an environment-friendly preparation method for an automobile engine shell. The environment-friendly preparation method includes the steps of mold shell preparation, alloy burdening, melting and pouring, cooling, aftertreatment and the like. According to the environment-friendly preparation method, a TiAl-based titanium aluminum compound serves as a shell material, long-time continuous work can be done at a high temperature, the performance is improved, and the service life is prolonged; fine wood bits and crop straw fibers serve as shell manufacturing materials, so that the using amount of refractory matter is reduced, and environmental protection is facilitated; reasonable matching is adopted, so that the breathability is increased on the premise that the shell strength is guaranteed; and cellular material attapulgite is adopted, so that exhausting is facilitated, the defect of air holes in the shell is reduced, the rate of finished products is increased, and meanwhile the weight of the mold shell is reduced.

Description

technical field [0001] The invention belongs to the technical field of metal investment precision casting, and in particular relates to an environment-friendly preparation method of an automobile engine casing. Background technique [0002] Mold investment casting is an advanced casting forming process, which is mostly used to realize complex, thin-walled, precision shell forming. It has great advantages in precision jewelry, aircraft engines and other precision molding parts. The traditional investment precision casting process is The fusible model (referred to as the investment model) is made of fusible materials (such as wax), and several layers of special refractory coatings are coated on it, and a whole module is formed after drying and hardening, and then melted from the module. It is a method to obtain a hollow mold shell by losing melting mode, then sinter the mold shell at high temperature, and finally pour molten metal into it to obtain the shell. At present, cera...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22C9/24B22C1/00B22C3/00C22C14/00C22C30/00C23C30/00
CPCB22C1/00B22C3/00B22C9/04B22C9/24C22C14/00C22C30/00C23C30/00
Inventor 陈衍玲刘全英韩哲
Owner 青岛博泰美联化工技术有限公司
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