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2022-08-03
Alumina ceramic crucible is a vessel or melting pot, which is made of refractory materials. It is mainly used for evaporation, concentration or crystallization process of solutions and firing process of solids. Table of Contents: Alumina Ceramic Crucible Instructions Application methods of alumina ceramic crucibles Crucible and Lid Heating with Crucible Support Apparatus Cooling Handling wit...
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2022-07-01
Alumina ceramic is a kind of ceramic product with aluminum oxide as the main component. In this article, influence of forming method and processing details on hardness and abrasion of alumina ceramics are briefly introduced. * Forming Methods of Alumina Ceramic 1.Dry Pressing: This type of forming method is only suitable for product with simple-structure, whose inner thickness is larger than 1mm a...
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2019-08-11
Alumina ceramic crucible is widely used in experimental analysis for its excellent performance, and satisfactory lifespan. However, to ensure the performance and lifespan of a crucible, it is very important to hand, operate and maintain it correctly, so i/n the current article, a care guideline of alumina ceramic crucible will be introduced for users. 1.Checking crucible for crack or d...
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2018-08-22
Heat densification methods includes: hot pressing, hot isostatic pressing, etc. As a matter of fact, hot squeezing and hot casting also belong to heat densification, but they are not widely used in ceramic production. Heat densification has high cost, but production rate is low, but for ceramics that need high performance while hard to get sintered, this method is the most widely used, because whe...
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2018-06-27
For most special ceramics, it’s hard to get densified product by only solid phase diffusion, so some certain additive will be added to generate glass phase or liquid phase. Due to rearrangement of particles and viscous flow in liquid phase, densified product can be obtained, meanwhile decrease sintering temperature. If liquid phase exists in the whole process of sintering, then it’s called liquid ...
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2018-08-22
Ordinary solid phase sintering In the past, ceramics were usually sintered in heavy oil tunnel kiln, while nowadays mainly in electric furnace, including tube furnace, vertical type furnace, box type furnace, etc. And sintering environment is decided by the performance requirement of product, also by economic factor. Shielding gas can be used, such as hydrogen, argon, nitrogen, also can be sintere...
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2018-06-20
Virtually, the process of sintering is powder grains are heated in appropriate condition, after a series of physical and chemical changes, and qualitative changes generated between powder particles, strength and density of the blank increase rapidly, other physical and chemical performance also improve obviously. Pressed blanked is not usable directly, so sintering is one of the necessary processe...
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2018-06-11
Cold isostatic pressing, also called isostatic pressure, compared with rigid module pressing, its advantages are as follows: 1.Available to press concave, hollow, slender and other complex shaped product. 2.Friction loss is small, and pressure is low. 3.Pressure is transmitted from every direction, and density distribution of pressed blank is uniform, also with high strength. 4.Module cost is low....
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2018-06-04
According the content, alumina ceramics are classified by #75, #85, #92, #95 and #99 ceramic, also with some more detailed categories. At present, #95 ceramic has the largest production, and it is most widely used in the market. With high hardness and abrasive resistance, and small dielectric loss, its performance can fulfill most of the industry technical requirements, which is much better than #...
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