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Preparing method of low-cost oxide ceramic shell for titanium alloy precision casting

A technology of oxide ceramics and precision casting, which is applied in the direction of casting molding equipment, casting molds, and casting mold components, and can solve problems that affect the mass production and application of titanium alloy investment casting precision casting, expensive prices, and high production costs of titanium alloys.

Inactive Publication Date: 2005-02-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to ZrO 2 , Y 2 o 3 Raw materials such as surface layer materials, yttrium sol, zirconium sol, zirconium diacetate and zirconium organic compounds are expensive, resulting in high production costs of titanium alloys, which affects the mass production of titanium alloy investment casting and the promotion and application of this process

Method used

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Embodiment Construction

[0004] The steps of this embodiment are as follows: 1. Preparation of the surface coating: add corundum powder with a finely graded particle size into the binder, stir while adding, and stir for 1 hour after adding all the corundum powder. The viscosity of the paint is controlled at 80-100s (Tu-4 viscometer); 2. Preparation of the shell: After the paint is prepared, immerse the wax pattern of the casting in the paint for 10-20 minutes and take it out. When the remaining paint on the wax pattern flows When it is uniform and no longer drips continuously, the freezing starts, and the sand can be sprinkled. The fused white corundum powder that has undergone particle size grading is evenly sprinkled on the wax pattern coated with paint. The sanding should be even and comprehensive. Then paint and sand on this basis. After each layer of paint and sand, it must be fully dried and hardened; 3. Dewaxing of the shell: put the dried wax mold coated with surface coating Put it into a high...

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Abstract

A low-cost oxide ceramic mould for the precise casting of Ti-alloy is prepared through preparing paint and wax mould of casting, immersing the wax mould in paint for 10-20 min, leveling the paint, uniformly applying the white electro-corundum powder to the paint layer of wax mould, drying, and high-pressure dewaxing.

Description

Technical field: [0001] The invention relates to a preparation process of an oxide ceramic mold shell used for investment precision casting of titanium alloy. Background technique: [0002] With the development of science and technology, the application of titanium alloys is becoming more and more extensive. From rockets and aircraft in the aerospace industry to artificial joints in the medical field, as well as in navigation, chemical industry, sports, etc., titanium alloys are famous for their excellent properties. Popular for performance. It has the characteristics of high specific strength, high specific stiffness, good corrosion resistance, and strong heat resistance, making titanium alloy one of the most promising modern structural materials. However, titanium is a very active metal element, especially at high temperature, it is easy to chemically react with other elements. The molten titanium liquid has chemical reactions with almost all refractory materials to vary...

Claims

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Application Information

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IPC IPC(8): B22C9/04
Inventor 陈玉勇田竟王惠光陈子勇肖树龙
Owner HARBIN INST OF TECH
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