Die for preparing large-size tubular green bodies through gel casting

A gel injection molding, large-scale technology, used in die-casting molds, manufacturing tools, ceramic molding machines, etc., can solve the problems of uneven drying, cracking, and inconvenient demoulding operation of green bodies, and avoid shrinkage and extrusion cracking. , The effect of uniform drying and easy demoulding

Inactive Publication Date: 2017-01-11
HANERGY CO INNO MOBILE ENERGY INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Aiming at the problems of inconvenient demoulding operation, uneven drying and severe cracking of the green body when preparing large-sized tubular green body by gel injection molding, the present invention provides a mold for preparing tubular green body by gel injection molding , the mold is easy to disassemble, the demoulding resistance is small, and the green body is not easy to deform and crack when it is dry

Method used

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  • Die for preparing large-size tubular green bodies through gel casting
  • Die for preparing large-size tubular green bodies through gel casting

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the mold for preparing a large-sized tubular green body by gel injection molding according to the first embodiment of the present invention mainly includes three parts: a chassis 3-1, an outer mold 2-1, and an inner core 1-1.

[0031] In this embodiment, the outer mold 2-1 is placed on the chassis 3-1, and the outside of the bottom of the outer mold 2-1 is provided with a convex edge, and the convex edge is provided with a plurality of mounting holes along the circumference, and is fixed on the On the chassis 3-1, there is an outer mold sealing ring 3-4 on the contact surface to ensure no liquid leakage. The inner core 1-1 is fixed on the center of the chassis 3-1, and the contact surface has an inner core sealing ring 3-5, and the inner core 1-1 and the chassis 3-1 are fixed by fastening bolts 3-3 to ensure no leakage.

[0032] Wherein, the outer mold 2-1 has a cylindrical inner cavity, and the inner core 1-1 is located in the inner cavity o...

Embodiment 2

[0038] Such as figure 2 As shown, the mold for preparing a large-size tubular green body by gel injection molding according to another embodiment of the present invention includes a chassis 3-1, an outer mold 2-1, an inner core 1-1, and an ejection mechanism on the chassis . to combine figure 2 As shown, the ejection mechanism includes a guide hole in the center of the chassis 3-1, and a ejection hammer 4-1. The guide hole is located on the chassis 3-1 corresponding to the inner core 1-1, and the ejection hammer 4 -1 can pass through the guide hole for the ejection of the inner core 1-1.

[0039] In addition, the surface of the ejection ram 4-1 can also be provided with an external thread, which can be rotatably mounted on the chassis 3-1, and the guide hole at the center of the chassis 3-1 is provided with an inner thread that matches the external thread on the surface of the ejection ram. Thread, when the green body is dried for a certain period of time, the inner core ...

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PUM

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Abstract

The invention discloses a die for preparing large-size tubular green bodies through gel casting. The die comprises a chassis, an outer die and an inner core. The outer die is detachably installed on the chassis. The outer die is provided with a cylindrical inner cavity. The inner core is located in the inner cavity of the outer die, and the inner core and the outer die are coaxially installed on the chassis. The space formed among the inner wall of the outer die, the outer wall of the inner core and the chassis is used as a die cavity where slurry is injected. The die for preparing the large-size tubular green bodies through gel casting is applied to the water-based gel casting technology and is convenient to disassemble and small in die removal resistance, and the green bodies are not likely to be deformed and cracked when dried.

Description

technical field [0001] The invention relates to the technical field of fine ceramic molding, in particular to a mold for preparing a large-size tubular green body by gel injection molding. Background technique [0002] In the 1990s, Professor M. A. Jenny and Omatete of Oak Ridge National Laboratory (Oak Ridge National Laboratory) invented a new wet molding technology for ceramic materials - gel casting technology (Gelcasting), which It is the perfect combination of traditional grouting technology and organic chemical high polymerization theory. By introducing a new shaping mechanism, the traditional grouting molding technology has been developed. The basic principle is to add a low concentration of organic monomers and crosslinking agents to ceramic slurry with high solid content (volume fraction not less than 50%) and low viscosity (about 1 Pa·s). After casting with agent and catalyst, the organic monomer in the slurry undergoes in-situ polymerization reaction under certai...

Claims

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Application Information

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IPC IPC(8): B28B1/26
CPCB28B1/261
Inventor 高明杨本润林俊荣
Owner HANERGY CO INNO MOBILE ENERGY INVESTMENT CO LTD
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