Oct 17 2007
The Bolt Technical Ceramics business of Morgan Advanced Ceramics (MAC) offers HALSIC high performance silicon carbide (SiC) materials and SILLIMANTIN mullite rollers for continuous roller kilns. These high performance ceramic rollers provide absolute dimensional stability and thermal shock resistance despite extreme mechanical strain in high temperature applications.
Bolt Technical Ceramics, located in Fairfield, New Jersey, supplies three grades of HALSIC in the United States, which are manufactured in MAC's Haldenwanger facilities in Germany. In addition to offering HALSIC-R (recrystallised SiC) and HALSIC-I (silicon infiltrated SiC), Bolt Technical Ceramics offers the patented HALSIC-RX, an extremely oxidation-resistant silicon carbide material that can be used in rotating roller applications up to 1650°C/3002°F.
Due to their high load-bearing ability, the HALSIC rollers are ideal for kilns used for the production of sanitary fixtures, porcelain, heavy clayware and technical ceramics, even at very high temperatures and in highly-oxidizing atmospheres.
Bolt Technical Ceramics also offers oxide ceramic rollers, composed of mullite materials, SILLIMANTIN-60, SILLIMANTIN-65, and SILLIMANTIN-60 NG, for use in the firing of wall and floor tiles. The high performance SILLIMANTIN-90 provides a cost-effective solution for firing large format porcelain stoneware tiles. Both materials offer outstanding resistance to high temperatures, temperature changes and chemical attack.
Standard rollers in the described materials can be manufactured in diameters from 20 mm to 60 mm and lengths of over 3,300 mm. All rollers are available with straight open ends, notched ends or with thermal fiber stuffed in the ends to help reduce heat loss. In order to insert the rollers into the mechanical drive systems, their ends can be ground and/or drilled with round or elongated holes, slots, etc.
With decades of experience serving the kiln industry, Bolt Technical Ceramics is able to offer design assistance and customized solutions.