Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wear-resisting aluminum oxide ceramic ball isostatic pressing process and special device

A technology of isostatic pressing and special equipment, applied in the direction of ceramic molding machines, manufacturing tools, etc., can solve the problems of poor dimensional consistency, many problems of static pressing machines, inaccurate dimensions, etc., and improve the one-time wet bag method, etc. Effect of static pressure forming, internal quality assurance, high dimensional accuracy

Active Publication Date: 2013-06-26
FOSHAN CERAMICS RES INST GRP CO LTD +1
View PDF5 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The method of automatically forming the sprayed powder through the dry bag isostatic press is limited by the press, and the pressure is low (currently the highest pressure can only reach about 40MPa, if the pressure exceeds this pressure, the isostatic press will have many problems and Can not be used stably) and the internal quality is average, the product wear is relatively high, and because only rubber molds can be used, its appearance is rough, the size consistency is not good, and the shape is relatively general
In addition, due to the use of dry powder materials in the molding process, dust pollution will occur, and the rubber mold has a short service life and needs to be replaced frequently, which affects efficiency
[0004] Although the existing wet bag isostatic pressing molding can achieve higher pressure (up to 80~100MPa, up to 200MPa or more) and good internal quality, but because the powder is artificially filled, it will cause dust pollution and labor The strength is high, the production efficiency is low, and it is also affected by the rubber mold, the spherical shape is not ideal, the size is not accurate, and the surface of the ceramic ball is also poor

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wear-resisting aluminum oxide ceramic ball isostatic pressing process and special device
  • Wear-resisting aluminum oxide ceramic ball isostatic pressing process and special device
  • Wear-resisting aluminum oxide ceramic ball isostatic pressing process and special device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] Weigh the main raw materials 60% ceramic roller waste, 25% alumina, 10% kaolin, 4% barium carbonate, 4% dolomite. The raw materials were put into a ball mill and milled for 40 hours to obtain a slurry with a grinding particle size≦5 μm and a water content of 30%, and the fluidity of the slurry was controlled at about 30 seconds. 0.5% polyvinyl alcohol was added to the slurry. The slurry is stirred and removed by an iron remover to obtain a preliminarily treated slurry. The preliminarily treated slurry is sent to the spray drying tower for spray granulation treatment to obtain powder for the production of alumina ceramic balls. In order to improve the molding performance, about 0.03% stearic acid is added to the powder. The powder was pre-molded by a four-column hydraulic press with a molding pressure of 25Mpa to obtain a wear-resistant ball green body. The pre-pressed green body is packaged with a rubber mold by a binding device; and then isostatically pressed by a w...

Embodiment 2

[0177] Weigh the main raw materials 66% ceramic roller waste, 20% alumina, 5% kaolin, 4% barium carbonate, 4.47% dolomite. The raw materials were put into a ball mill and milled for 55 hours to obtain a slurry with a grinding particle size≦4 μm and a water content of 35%, and the fluidity of the slurry was controlled at 35 seconds. 0.5% polyvinyl alcohol was added to the slurry. The slurry is stirred and removed by an iron remover to obtain a preliminarily treated slurry. The preliminarily treated slurry is sent to the spray drying tower for spray granulation treatment to obtain powder for the production of alumina ceramic balls. In order to improve the molding performance, 0.1% stearic acid is added to the powder. The powder was pre-molded by a four-column hydraulic press with a molding pressure of 30 MPa to obtain a green body. The pre-pressed green body is packaged with a rubber mold through a binding device; and then isostatically pressed by a wet bag isostatic press at...

Embodiment 3

[0179] Weigh the main raw materials 84.69% ceramic roller waste, 12% alumina, 1% kaolin, 1% barium carbonate, 1% dolomite. The raw materials were put into a ball mill and milled for 60 hours to obtain a slurry with a grinding particle size≦5 μm and a water content of 40%, and the fluidity of the slurry was controlled at 40 seconds. 0.3% polyvinyl alcohol was added to the slurry. The slurry is stirred and removed by an iron remover to obtain a preliminarily treated slurry. The preliminarily treated slurry is sent to the spray drying tower for spray granulation treatment to obtain powder for the production of alumina ceramic balls. To improve the molding performance, about 0.3% stearic acid is added. The blank was pre-pressed and formed by a four-column hydraulic press with a forming pressure of 35Mpa to obtain a blank. The pre-pressed green body is packaged with a rubber mold by binding equipment; and then isostatically pressed by a wet bag isostatic press at a pressure of 1...

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

PUM

PropertyMeasurementUnit
Graininessaaaaaaaaaa
Login to View More

Abstract

The invention discloses wear-resisting aluminum oxide ceramic ball isostatic pressing process. The process includes a first step of conveying slurry subjected to primary treatment into a spray drying tower for spray granulation treatment to obtain blanks for manufacturing aluminum oxide ceramic balls, a second step of carrying out prepressing molding on the blanks through a four-column hydraulic press to obtain green bodies, a third step of carrying out isostatic pressing molding on the green bodies subjected to prepressing molding in a wet-bag type isostatic pressing machine, and a fourth step of feeding the green bodies subjected to isostatic pressing molding into a kiln for burning under the temperature of 1200-1800 DEG C to obtain the wear-resisting aluminum oxide ceramic balls. The invention further discloses a special device for the wear-resisting aluminum oxide ceramic ball isostatic pressing process. The special device comprises the four-column hydraulic press. The wear-resisting aluminum oxide ceramic ball isostatic pressing process and the special device can improve appearance quality, enable specifications and sizes of products to be accurate, reduce wear rate of the products and improve the inherent quality of the products. Meanwhile, the wear-resisting aluminum oxide ceramic ball isostatic pressing process can improve production efficiency of the products, reduce labor intensity of workers, reduce dust pollution and improve working environment.

Description

technical field [0001] The invention relates to the technical field of ceramic processing and production, in particular to an isostatic pressing molding process of wear-resistant alumina ceramic balls and special equipment thereof. Background technique [0002] Wear-resistant ceramic balls are widely used in ceramics, glass, enamel, pigments, chemicals and other industries. They are grinding balls in various mills and fine crushing equipment. They have high strength, low wear, strong applicability and high crushing efficiency. At present, the production of relatively large (diameter > 25mm) wear-resistant ceramic balls in China mainly has the following two processes. The first production process is as follows: raw material batching - ball milling - squeezing mud - mud training - manual molding - drying - firing, this A kind of production technology production efficiency is low, and labor intensity is big, and working environment is poor. The second production process is ...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B28B3/00
Inventor 冯斌苏小红
Owner FOSHAN CERAMICS RES INST GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com