A kind of method adopting lost foam casting porous ceramics/magnesium alloy composite material
A technology of lost foam casting and porous ceramics, applied in the direction of casting molding equipment, molds, mold components, etc., which can solve the problems of increasing the preparation process and cost, and achieve the effect of simple process, high quality and low preparation cost
Active Publication Date: 2020-07-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
At present, existing literature discloses the use of lost foam casting technology to prepare porous ceramic / iron-based composite materials. It is necessary to metallize the surface of the ceramic to improve the wettability between the molten metal and the ceramic, which increases the preparation process and cost.
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0033] see figure 1 , the method for adopting the lost foam casting porous ceramic / magnesium alloy composite material provided by the preferred embodiment of the present invention, the method comprises the following steps:
[0034] In step 1, a porous ceramic body is prepared by using a 3D printing extrusion molding process, and the porous ceramic body is dried and sintered to form a porous cer...
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Abstract
The invention belongs to the technical field related to composite materials, and discloses a method for adopting lost foam casting of porous ceramic / magnesium alloy composite materials. The method includes the following steps: (1) preparing a porous ceramic green body by adopting a 3D printing extrusion molding process , and drying and sintering the porous ceramic body to form a porous ceramic; (2) providing a composite model, embedding the porous ceramic into the composite model, so that the composite model seals the porous ceramic; (3) Putting the outer surface of the composite model into a sand box after being coated with paint and dried for compact sand filling molding; (4) pouring magnesium alloy molten metal into the composite model, the magnesium alloy The molten metal is filled and solidified under the conditions of vacuum negative pressure and vibration, and then the porous ceramic / magnesium alloy composite material is obtained. The preparation process of the invention is simple, the cost is low and the efficiency is high.
Description
technical field [0001] The invention belongs to the technical field related to composite materials, and more specifically relates to a method for casting porous ceramic / magnesium alloy composite materials by using lost foam. Background technique [0002] Magnesium alloy is the lightest metal structure material. It has high specific strength and specific stiffness, good thermal conductivity, stable size, outstanding shock and noise reduction capabilities, good electromagnetic shielding, excellent casting and cutting performance, and is easy to recycle. It is widely used in aerospace, automobile, communication electronics and military industry and other fields. At the same time, my country is a big country in magnesium resources and magnesium production, and its reserves and output both rank first in the world. However, magnesium alloys have low mechanical properties (especially high temperature performance), poor corrosion resistance and wear resistance, which largely limit ...
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IPC IPC(8): C22C1/10B22C9/04B33Y10/00
CPCC22C1/1015C22C1/1036B22C9/046B33Y10/00C22C1/1021
Inventor 蒋文明李广宇樊自田管峰蒋海啸唐世艳杨力
Owner HUAZHONG UNIV OF SCI & TECH