Comprehensive guide to ceramic flux agents and setting aids.
Ceramic firing is an energy-intensive process in which the green body is transformed into the final product at high temperatures (typically 1000 to 1250 degrees Celsius). During this process, mineral particles partially melt and bond together (sintering). Flux agents are materials that reduce the melting and sintering temperature, enabling achievement of desired properties at lower temperatures. This provides significant economic benefits: reduced gas consumption, extended kiln and roller life, and the ability to increase production line speed. Kimia Ceram Zarin formulates flux agents and setting aids based on the customer's body composition and firing conditions.
Kimia Ceram Zarin's flux agents are offered in several categories. One category that has the greatest effect on reducing firing temperature but may increase the thermal expansion coefficient. Another that reduces both temperature and expansion coefficient, ideal for porcelain bodies. Another that creates good vitrification and increases body translucency. And a composite category that provides the best balance between various properties. Selection of the appropriate type is based on body chemical analysis, current firing temperature, desired properties (water absorption, bending strength, dimensions), and production constraints.
How much can flux reduce firing temperature?
Depending on the flux type and body composition, temperature reduction of 20 to 80 degrees Celsius is possible. Kimia Ceram Zarin's technical team determines the exact temperature reduction through testing the customer's body sample.