Method for preparing suspension arm with stage

A boom and step technology, which is applied in the field of semiconductor handling precision ceramics preparation, can solve the problems of molding failure, pressure difference, uneven density, etc., and achieve the effects of high yield, good application prospects, and high production efficiency

Active Publication Date: 2012-09-26
SHANGHAI COMPANION PRECISION CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Combined with production efficiency and product requirements, the production of precision ceramic products by dry pressing is an efficient production method under the premise of satisfying product quality. Structural parts with steps are produced between steps and other structures during the dry pressing process. Pressure difference, resulting in uneven density in the structure, resulting in molding failure or various defects such as cracks and deformation during sintering

Method used

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  • Method for preparing suspension arm with stage
  • Method for preparing suspension arm with stage
  • Method for preparing suspension arm with stage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Alumina with a purity ≥ 99.7% is used for batching, and a buffering device is used for dry pressing molding, with a pressure of 100 MPa, two-way pressure, and pressure holding for 1 minute to obtain a molded body;

[0021] (2) Perform cold isostatic pressing on the above-mentioned formed green body at a pressure of 200MPa, hold the pressure for 3 minutes, and then sinter at 1650°C for 2 hours and finish machining to obtain a boom with steps (such as figure 1 , 2 shown).

Embodiment 2

[0023] (1) Alumina with a purity ≥ 99.7% is used for batching, and a buffering device is used for dry pressing molding, with a pressure of 150MPa, two-way pressure, and pressure holding for 3 minutes to obtain a molded body;

[0024] (2) Cold isostatic pressing is performed on the above-mentioned formed green body at a pressure of 300 MPa, and the pressure is maintained for 5 minutes, and then sintered at 1800°C for 4 hours and finished to obtain a boom with steps.

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Abstract

The invention relates to a method for preparing a suspension arm with a stage, which comprises the following steps of: (1) preparing materials by aluminum oxide, dry-pressing and forming the materials by a device having a buffer function to acquire a forming blank body; and (2) performing isostatic cool pressing on the forming blank body, and sintering and refine-machining the forming blank body to acquire the suspension arm with the stage. With the adoption of the method, the dry-pressing and formation problem of a structural member of a stage structure can be solved, so that the production efficiency and the yield are high, the scale production can be realized, the product structure is not abnormally deformed, and the density is over 98 percent; and therefore, the method has good application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of semiconductor handling precision ceramics, in particular to a preparation method of a crane arm with steps. Background technique [0002] Precision ceramics are mainly used to make circuit substrates, coil bobbins, tube sockets, high-voltage insulating porcelain, and rocket nose cones. It can also be made into high-porosity precision casting cores for casting alloys. It can also be used as a high-temperature material with good shock resistance. Precision ceramic technology uses thermosetting plastics (such as silicone resin) as a binder, and ceramic powder is added in a certain proportion, and after mixing, it is molded by an injection molding machine or cast. Then, it is sintered into products at high temperature. According to the different properties of raw materials and the differences in product performance, shape, and size, different binders and molding methods can be selected to make electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/00
Inventor 陶岳雨陶近翁
Owner SHANGHAI COMPANION PRECISION CERAMICS
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