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Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body

A technology of silicon carbide ceramics and process methods, applied in the new process field of ceramic components, can solve problems such as the complexity of the shape cannot meet the requirements, and achieve the effect of increasing the development speed

Inactive Publication Date: 2007-03-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional preparation process is to use the mold to make the powder raw material into a green body, and then sinter at high temperature to manufacture the component. This method is limited by the mold making and cannot meet the requirements in terms of the complexity of the shape.

Method used

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  • Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body
  • Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body
  • Technical method for rapid shaping silicon carbide ceramic part utilizing laminated solid body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Referring to Fig. 1, present embodiment is raw material with paper and phenolic resin, and its processing step comprises:

[0021] 1.3D model design step, according to actual requirements, use Pro / E software to construct the three-dimensional data model of the workpiece, as shown in Figure 2; and store the model shown in Figure 2 as an STL format file;

[0022] 2. Use the layering software that comes with the rapid prototyping machine to do layering processing, and import the processed data into the manufacturing program; the above steps are mature technologies in this field.

[0023] 3. Use 2130# phenolic resin and add benzenesulfonyl chloride with a weight ratio of 4% to mix evenly as the interlayer adhesive.

[0024] 4. Create a rapid prototype of the paper precursor on the rapid prototyping machine.

[0025] 5. Put the manufactured paper precursor rapid prototype into an oven to deeply cure the phenolic resin binder. The initial temperature of the oven was set at ...

Embodiment 2

[0030] The difference between this example and Example 1 is that in step 6, the carbonization temperature is 1000°C, and the holding time is 0.5h; in step 7, the particle size of Si powder is 50 μm, the reaction temperature is 1550°C, and the holding time is : 1h, all the other are with embodiment 1.

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Abstract

The invention relates to a technical method for making silicon carbide ceramic parts using layered organism manufacturing (LOM) fast molding technique, combining the property of the fast molding technique being easy to manufacture complex shaped parts with the silicon carbide reacting and sintering technique, overcoming the defects of the traditional techniques, and able to solve the difficulty in manufacturing complex shaped ceramic structural pieces. The main method: according to the LOM theory, using web as molding material of manufactured piece, using phenolic aldehyde resin as adhesive, making a prototype by fast molding technique, converting into 3D carbon bracket by pyrogenation, then making high temperature carburization, making in-situ reaction of the silicon on the carbon bracket to form the structural pieces of silicon carbide ceramic and its composite. The method realizes the mold-free manufacturing of complex-shaped silicon carbide ceramic structural pieces.

Description

technical field [0001] The invention relates to a new technology of ceramic components, in particular to a complex-shaped, paper- and phenolic-resin-based technology for manufacturing silicon carbide ceramic parts by rapid prototyping of layered entities. Background technique [0002] Silicon carbide ceramics has the characteristics of high temperature strength, wear resistance, and high hardness. It is one of the most important engineering materials and has wide applications and urgent needs in petrochemical, aerospace, national defense and military industries. The traditional preparation process is to use the mold to make the powder raw material into a green body, and then sinter at high temperature to manufacture the component. This method is limited by the mold making and cannot meet the requirements in terms of the complexity of the shape. The layered composite ceramics studied in recent years can greatly improve the toughness of ceramics and ov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B35/565
Inventor 李涤尘崔志中
Owner XI AN JIAOTONG UNIV
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