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Ceramic tubes are resistant to thermal shock, which is the tendency of a material to become damaged when subject to dramatic changes in temperature. Their electrical non-conductivity can make them suitable as channels through which electrical wires can be passed.
Ceramics are very hard materials and are resistant to compressive force, however they are not resistant to shear force and can be damaged if subject to excessive angular force or tension. Ceramics are abrasion-resistant, which makes them good materials for the construction of tubes through which abrasive media pass.
Ceramic tubes can also be made porous; such ceramic tubing products are good candidates for certain specialized telecommunications tasks.
Ceramics have been in production for centuries; the earliest examples were simple, hand-formed pots and jars. Today, the basic concept of ceramic-making is similar; non-metal materials are still combined, heated and shaped to create a usable product.
The major differences between modern ceramics and early ceramics are the materials used and their applications. Depending on the intended application for a ceramic, any one of several raw materials can be chosen for ceramic product-making. Common examples include aluminum oxide, silicon carbide, zirconia and many others.
In the case of ceramic tubes, any material and construction method can be used. One of the most common tube construction methods is extrusion. Many other tube-shaped products are formed through the extrusion processes because it is highly efficient, continuous and produces uniform products.
The process begins with a collection of raw material suspended in a hopper over a conveyance channel. Once released into the channel, the material is heated to a molten state and forced through a die.
A die is a profile cut in a plate that is designed to give shape to materials that pass through it. The raw material passes through the die and takes its shape, emerging on the other side as newly-extruded tubing.
Ceramic tubes are used in a wide variety of applications.
This is primarily due to their thermal resistance, durability, and insulating properties.
They are extensively used in furnace and kiln applications.
In these applications, they serve various functions.
These functions include supporting heating elements, providing lead outs for electrical cables, and facilitating temperature measurement or burner holes.
Ceramic tubes are also crucial in processes involving heat treatment, enameling, and the production of consumer and structural ceramics.
Ceramic tubes are ideal for use in furnaces and kilns.
They support wound elements for heating.
They are used as lead outs for electrical cables.
They are also used for temperature measurement or as burner holes in gas and oil-fired kilns.
Custom ceramic burner components made from materials like alumina or silicon carbide are also supplied.
These components are tailored to specific needs.
In the metals industry, ceramic tubes are used for heat treating processes.
These processes include stress relieving, annealing, and forging preheat.
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They are also integral in enameling processes.
In these processes, they help in the production of items like cast iron, stampings, and pipes.
Ceramic tubes play a significant role in the production of consumer ceramics like dinnerware and giftware.
They also play a role in structural ceramics such as ceramic matrix composites, tile, and brick.
They are essential in the various stages of ceramic production.
These stages include decorating, glazing, and firing.
In research facilities, ceramic tubes are used in tube furnaces for various applications.
These applications include the production of semiconductors and batteries, vacuum brazing, and heat treatment.
They are also used in testing for aerospace ceramics, oil and gas analysis, and the development of solid oxide fuel cells.
Different materials are used for ceramic tubes depending on the temperature requirements and specific applications.
Quartz tubes are suitable for temperatures up to °C and are cost-effective.
However, they may not withstand as many heat-cool cycles as other materials.
Other materials include alumina, mullite, corundum, sillimanite, mullite-bonded silicon carbide, recrystallised silicon carbide, and zirconia.
Each of these materials offers specific benefits depending on the application.
In summary, ceramic tubes are versatile components used in a multitude of industries.
They are primarily used for their ability to withstand high temperatures.
They provide reliable performance in extreme environments.
Their applications range from simple support structures in kilns to sophisticated components in high-tech research and manufacturing processes.
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