Silicon nitride ceramic riser tubes are ceramic tubes made of silicon nitride (Si3N4) material used in investment casting processes as reservoirs to store molten metal for later solidification, compensating for shrinkage during solidification by adding liquid metal at intervals during solidification.

*Practical experience has demonstrated that Silicon Nitride Ceramic is an ideal material for low-pressure casting and quantitative furnace riser applications.

Silicon Nitride Ceramics offer superior high-temperature strength compared to traditional cast iron, silicon carbide, carbon nitrogen materials and Aluminum Titanate; their service lives can last over one year.

* Due to its low wettability with aluminum liquid, SG-28 Silicon Nitride Ceramic can effectively prevent slagging on both inner and outer walls of risers, thus decreasing shutdown loss and maintenance costs.

* Silicon Nitride Ceramic offers excellent corrosion resistance, which can effectively decrease aluminum liquid pollution while contributing to improving casting quality.

Precautions for Use

* Before installing the Riser Tube, follow all installation instructions and use high temperature sealing materials that meet requirements;

* To ensure safety before use, the product should be dried and preheated above 400 degrees before use;

* In order to increase the longevity of the Riser Tube, regular cleaning and maintenance should be carried out (once every 7-10 days).