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Ceramic roller isostatic pressing process and special isostatic pressing equipment thereof

A ceramic roller, isostatic pressing technology, applied in ceramic molding machines, manufacturing tools, etc., can solve the problems of valves not being lubricated, unable to use water, poor wear resistance, etc., to reduce calcination energy consumption, reduce pollution, flow good effect

Active Publication Date: 2014-12-10
FOSHAN CERAMICS RES INST GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general valve has poor wear resistance, and it is easy to wear after being subjected to high pressure exceeding 100Mpa, and then leaks
When sealing high-pressure water, the valve is not lubricated, and it is more prone to wear and leakage during use
The water seal has higher requirements on the sealing device, and requires a more precise cooperation between the valve body and the valve core. Due to the limitation of the above-mentioned sealing performance, the existing equipment cannot use water as a high-pressure pressure medium.

Method used

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  • Ceramic roller isostatic pressing process and special isostatic pressing equipment thereof

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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below.

[0025] A method for isostatic pressing of ceramic roller rods. The outer body of the tubular body set on the inner mold of the rigid tube is covered with a waterproof rubber outer film, and it is placed in an autoclave as a whole workpiece to apply static high pressure. The pressure value is taken as 120Mpa or more, and then release the pressure and demould the tubular embryo body into the kiln for calcination.

[0026] Among them, in order to meet the length requirements of the current ceramic rollers without wasting equipment space, the current ceramic rollers are widely used with a length in the range of 4 meters to 7 meters. Therefore, the length of the autoclave should be taken as 4 meters or more. The more ideal length of the autoclave is 4-7m (inclusive), and the more ideal length is 6-7m (inclusive).

[0027] The autoclave in the present invention is high-pressure isostatic pressing equipment...

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Abstract

The invention discloses a ceramic roller isostatic pressing forming method, which comprises: sleeveing a waterproof rubber outer film outside a tubular blank body sleeved on a rigid tube body inner mold; placing the tubular blank body in a high-pressure as an entire workpiece, and applying a static high pressure, wherein the value of the pressure is over 120Mpa; and relieving pressure, demolding and placing the tubular blank body in a kiln furnace for calcining. The high-density blank body can be obtained by improving the pressure for isostatic pressing, a rigidity requirement can be met without high-temperature sintering, and the aim of saving energy and reducing emission can be fulfilled. Water is used as a pressure medium for pressurizing, and the roller can be covered with a common waterproof rubber sleeve to save medium cost and rubber sleeve cost. The invention also discloses a special isostatic pressing equipment for ceramic rollers, which uses the isostatic pressing forming method.

Description

technical field [0001] The invention relates to an isostatic pressing device, in particular to a high isostatic pressing device specially used for manufacturing ceramic roller rods for applying uniform static high pressure to workpieces. Background technique [0002] The traditional method of firing ceramic rollers is to directly fire the tubular rollers formed by grouting or extrusion to form finished products, and the strength of the products depends on the composition of the materials. The existing ceramic rollers are generally formed by isostatic pressing, which is formed by extruding the billet onto the metal pipe through a pipe extruder, then putting on a rubber sleeve, sealing both ends, and releasing the mold after pressurization and pressure relief. , the calcined product is not easily deformed, has uniform density, small shrinkage, and high bending strength. [0003] With the development of the ceramic industry, the rigidity of ceramic rollers is getting higher an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B3/20
Inventor 冯斌王志良杨华亮周天虹张脉官
Owner FOSHAN CERAMICS RES INST GRP CO LTD
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