
99.8% Alumina Al2O3 Ceramic Thermocouple Sheath Tube
Alumina ceramic tube is a special corundum ceramic tube made of Al2O3 as the main raw material, rare metal oxide as the flux, and calcined at a high temperature of 1,700.
The company has consistently produced high-quality Sprial Heating Element, ceramic element heater fan, thermocouple protection tubes with "first-class products, high-quality services, strong technical force, and complete testing equipment". We continue to improve the comprehensive capabilities and service awareness of our employees, so as to promote the improvement of corporate product quality and operational quality. Our open communication culture ensures that all levels of the company are workflow-centric, with clear responsibilities and actions for each employee.
Description
Alumina ceramic tube is a special corundum ceramic tube made of Al2O3 as the main raw material, rare metal oxide as the flux, and calcined at a high temperature of 1,700. It is widely used in various industrial furnace fields, as furnace tube (wire tube, wire winding tube, oxygen blowing tube, etc.), support, threading, insulation and other purposes.
Property
Ceramic tube is mainly based on grouting molding, and there are other molding methods such as extrusion and hot die casting.

Classification
Alumina ceramics are divided into two types: high-purity type and ordinary type.
High-purity alumina ceramics are ceramic materials with an Al2O3 content of more than 99.9%. Because their sintering temperature is as high as 1650-1990 ℃, and the transmission wavelength is 1 to 6 μm, they are generally made into molten glass to replace platinum crucibles; use its light transmission It can be used as a sodium lamp tube, and it can be used as an integrated circuit substrate and high-frequency insulating material in the electronics industry.
Ordinary alumina ceramics are classified into 99 porcelain, 95 porcelain, 90 porcelain, 85 porcelain and other varieties according to different Al2O3 content. Sometimes those with 80% or 75% Al2O3 content are also classified as ordinary alumina ceramic series. Among them, 99 alumina porcelain is used to make high temperature crucibles, refractory furnace tubes and special wear-resistant materials, such as ceramic bearings, ceramic seals and water valve discs; 95 alumina porcelain is mainly used as corrosion-resistant and wear-resistant parts; 85 porcelain Because it is often mixed with some talc to improve the electrical performance and mechanical strength, it can be sealed with metals such as molybdenum, niobium, and tantalum, and some are used as electrical vacuum devices.
Data Sheet of Ceramic Tube
Item | Content (%) |
Al2O3 | 99.3 |
SiO2 | 0.3-0.5 |
CaO+MgO | 0.2-0.3 |
K2O+Na2O | 0.15-0.3 |
Fe2O3 | <0.05 |
Others | <0.05 |
Q&A
1. How about the working temperature?
The working temperature ranges from 1650 to 1700℃
2. What is the Aluminum content?
The aluminum content is 95% or 99%.
We have created a way to process orders quickly so that the 99.8% Alumina Al2O3 Ceramic Thermocouple Sheath Tube can be delivered to customers quickly. High-standard technology, high-quality employees, high-quality products, and high-level services have been our unremitting pursuit for many years. Our sustainable development strategy is supported by the company's main business, with corporate governance, products and services, environment and employees as the pillars of the direction, so as to better promote and guide the implementation of sustainable development efforts.
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