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Preparation method of engine component

A technology for engines and components, which is applied in the field of preparation of engine components, can solve the problems of large environmental pollution and difficult recycling of molding sand, and achieve the effects of easy availability of raw materials, favorable exhaust, and weight reduction

Inactive Publication Date: 2016-05-04
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 sand and the problem of serious environmental pollution. Therefore, it is very important to find a high-performance and environmentally friendly mold shell preparation method. Needed

Method used

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Embodiment Construction

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

[0015] A method for preparing an engine component, 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 parts to be obtained, and bond them into wax mold groups; b. Use zircon powder and silica sol with suitable proportioning , fine wood chips, n-octanol, and cobalt aluminate are mixed and stirred to prepare the surface coating, and the surface sand is coated after the wax module is coated. The surface sand components are alumina sand and fine wood chips, c. Attapulgite with a suitable ratio 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 the slurry and dry, d. dewa...

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Abstract

The invention discloses a preparation method of an engine component. The preparation method comprises the steps of mold shell preparing, alloy burdening, melting and pouring, cooling, posttreatment and the like. A TiAl-based titanium aluminum compound is adopted as a component material, and therefore the engine component can continuously work for a long time at high temperature, performance is improved, and the service life is prolonged; wood bits and crop straw fibers are adopted as shell manufacturing materials, the usage amount of refractory matter is lowered, and environment friendliness is facilitated; a reasonable ratio is adopted, and air permeability is increased on the premise of guaranteeing the strength of a shell; a porous material, attapulgite, is adopted, air exhaust is facilitated, blowhole defects of the component are reduced, and the yield 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 a method for preparing engine parts. Background technique [0002] Mold investment casting is an advanced casting forming process, which is mostly used to realize complex, thin-walled and precision parts forming. It has great advantages in precision jewelry, aero-engines and other precision molding parts. The traditional investment precision casting process is to use The fusible material (such as wax) is made into a fusible model (abbreviated as the investment model), and several layers of special refractory coatings are coated on it, and then dried and hardened to form an integral module, and then melted away from the module. The method of investment to obtain a hollow formwork, then sintering the formwork at high temperature, and finally pouring molten metal into it. At present, ceramic sand is mostly used in the production process of inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/22B22C3/00
CPCB22C9/04B22C3/00B22C9/22
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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