Silicon nitride ceramic is the preferred material for outer protection tubes of electric heaters in the aluminum processing industry, thanks to its outstanding high-temperature performance and corrosion resistance.
With high hot strength and excellent thermal shock resistance, the product can withstand long-term erosion from high-temperature heating elements and molten aluminum, with a normal service life of over one year.
Silicon nitride ceramic is virtually inert to molten aluminum, helping maintain the purity of the heated aluminum bath.
Compared with traditional top radiation heating methods, energy savings reach 30%-50% or more, and overheating oxidation of the top molten aluminum layer is reduced by 90%.
For safety, the product should be dried and preheated at 400°C or above before use.
When the electric heater is used for the first time, temperature should be raised slowly according to the heating curve.
To extend the product’s service life, regular surface cleaning and maintenance (every 7-10 days) are recommended.
Post time: Oct-10-2026