Aluminum oxide ceramic integrated hot-pressing molding machine and working method

Abstract

The invention discloses an aluminum oxide ceramic integrated hot-pressing molding machine and a working method. The aluminum oxide ceramic integrated hot-pressing molding machine comprises a pressingdevice and a hot-pressing device which are fixed to a rack, wherein the hot-pressing device is located below the pressing device, a stirring device is arranged in the hot-pressing device, and a hot-pressing mold is arranged above the hot-pressing device; the pressing device enables one path of high-pressure gas to act on the hot-pressing mold, and enables the other path of high-pressure gas to enter the hot-pressing device to enable slurry to flow into a cavity of the hot-pressing mold; the stirring device is used for stirring the slurry in the hot pressing device so as to enable an aluminum oxide blank to be more uniformly distributed in the slurry; and temperature measuring elements for detecting the temperature of internal oil and the temperature of slurry at the slurry outlet are arranged in the hot-pressing device, the power of an electric heating device is regulated and controlled in real time according to the temperature detected by the temperature measuring elements, and the purpose of accurate temperature control is achieved. Through the mold and the heating device, the temperature field distribution tends to be reasonable, the slurry temperature can be accurately controlled, the heating efficiency is obviously improved, and the distribution of the aluminum oxide powder in liquid paraffin can significantly improve the molding quality of the casting.

Description

technical field [0001] The disclosure belongs to the technical field of alumina ceramic processing and molding, and in particular relates to an alumina ceramic integrated hot-press molding machine. Background technique [0002] In ceramic processing, the most common material is alumina. Alumina ceramics are a kind of aluminum oxide (Al 2 o 3 ) as the main ceramic material for thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. It should be noted that ultrasonic cleaning is required. Alumina ceramics are a kind of ceramics with a wide range of uses. Because of its superior performance, it has been more and more widely used in modern society, meeting the needs of daily use and special performance. [0003] Alumina ceramics are divided into high-purity type and ordinary type. High-purity alumina ceramic system Al 2 o 3 Ceramic materials with a content of more than 99.9%, because their sintering te...

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Problems solved by technology

[0014] Although this device solves the safety problem, it has not made improvements to the key factor affecting hot press forming - temperature, and cannot adapt to various forming molds. The temperature field distribution of the heating device is unreasonable and does not conform to the concept of green processing.

[0015] Combining the above factors, combined with the current concept of green and low-carbon development, and a full understanding of the hot die-casting molding process, the structural development of related devices is not perfect, and the temperature field distribution is generally unreasonable, the molding temperature cannot be accurately controlled, and oxidation The uneven distribution of aluminum powder in liquid paraffin is likely to cause the disadvantage of low casting quality

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