Degreasing method used for transparent alumina ceramic injection molding product

An alumina ceramic, injection molding technology, applied in ceramic molding machines, manufacturing tools, etc., can solve the problems of short degreasing cycle, long degreasing cycle, low degreasing rate, etc., achieve uniform degreasing, low defect rate, and improve degreasing rate. Effect
CN101698613AInactive Publication Date: 2010-04-28XI AN JIAOTONG UNIV
0 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2010-04-28
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to the field of the injection molding of transparent ceramics and ceramic powder, which discloses a degreasing method used for a transparent alumina ceramic injection molding product. The method comprises the following steps: firstly, injecting and molding a ceramic crude blank, wherein the assistant materials of the ceramic crude blank are alumina and an adhesive, and the adhesive comprises the following components by weight percent: 18-20% of polypropylene, 70-80% of paraffin and 1-12% of stearic acid; secondly, immersing the ceramic crude blank in an extraction solvent and extracting for 3-4h at the temperature of 45-60 DEG C, wherein the extraction solvent is prepared by mixing 20-30% of alcohol by volume and 70-80% of normal heptane by volume; then, discharging the extraction solvent and drying the ceramic crude blank in the air at room temperature; and finally, burying the ceramic crude blank in alumina powder and carrying out thermal degreasing for 56-60h hot.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of transparent ceramics and ceramic powder injection molding, in particular to a degreasing method for injection molding of transparent alumina ceramics. Background technique

[0002] Transparent alumina ceramics are used in high-pressure sodium lamp tubes, high-temperature infrared detection windows, high-frequency insulating materials, and integrated circuit substrate materials because of their good permeability to visible light and infrared light. However, most of the transparent ceramics used at present are formed by dry pressing or cold isostatic pressing. These forming methods cannot form products with complex shapes, the dimensional accuracy is not high, and subsequent processing is required. Therefore, they cannot be used for ceramic metal halide lamp tubes. forming.

[0003] Ceramic powder precision injection molding is a new molding technology that has developed rapidly in the world in the past 10 years. I...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More