Environment-friendly type manufacturing method for car supercharging turbine

A supercharged turbine and environment-friendly technology, which is applied to casting molding equipment, casting molds, cores, etc., can solve the problems of large environmental pollution and difficult recycling of molding sand, so as to achieve easy access to raw materials, reduce turbocharger pore defects, reduce The effect of usage

Inactive Publication Date: 2016-04-20
青岛博泰美联化工技术有限公司
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  • Summary
  • Abstract
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  • 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

[0012] The present invention will be further described below in combination with specific embodiments.

[0013] (1) Prepare the mold shell, including: a. Prepare corresponding wax molds, pouring systems, risers according to the shape of the turbocharger to be obtained, and bond them into wax molds; b. Adopt suitable proportioning zircon powder, Silica sol, fine wood chips, n-octanol, and cobalt aluminate are mixed and stirred to prepare the surface coating. After coating the wax model, the surface sand is made of aluminum oxide sand and fine wood chips. c. Mix and stir stick clay powder, mullite powder, crop straw fiber, and ethyl silicate hydrolyzate to prepare the back layer paint, coat the wax mold set, hang the back sand, repeat the hanging back sand several times, seal the slurry and dry, d. The wax is roasted to obtain the mold shell.

[0014] (2) Alloy batching, the chemical composition of the alloy according to atomic percentage includes: Al: 40.0-43.0 at%, V: 0.6-1.3...

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PUM

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Abstract

The invention discloses an environment-friendly type manufacturing method for a car supercharging turbine. The environment-friendly manufacturing method includes the steps of mold shell manufacturing, alloy burdening, smelting pouring, cooling, aftertreatment and the like. According to the environment-friendly type manufacturing method, a TiAl-based titanium aluminum compound serves as a supercharging turbine material, and long-time continuous work can be done at a high temperature, so that the performance is improved, and the service life is prolonged; fine wood bits and crop straw fibers are adopted as shell making materials, so that the using amount of refractory matter is reduced, and environmental protection is facilitated; the reasonable proportion is adopted, so that the breathability is improved on the premise that the shell strength is guaranteed; and a cellular material, namely attapulgite, is adopted, so that exhausting is facilitated, the defect of air holes of the supercharging turbine is reduced, the finished product rate is increased, and meanwhile the weight of a 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 turbocharger. Background technique [0002] Mold investment casting is an advanced casting forming process, which is mostly used to realize complex, thin-walled, precision turbocharged turbo forming. It has great advantages in precision jewelry, aero-engines and other precision molded parts. The traditional investment precision casting process It is a fusible model (referred to as investment model) made of fusible materials (such as wax), coated with several layers of special refractory coatings, dried and hardened to form a whole module, and then removed from the module. The method of melting the molten mold to obtain a hollow mold shell, then sintering the mold shell at high temperature, and finally pouring molten metal into it to obtain a turbocharger. At present, ceramic sand i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00B22C3/00B22C9/04F01D5/02
CPCB22C3/00C22C14/00B22C9/04F01D5/02
Inventor 刘全英韩哲陈衍玲
Owner 青岛博泰美联化工技术有限公司
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