TOMBO No.4720 LUMIBOARD™ is a xonolite-based calcium silicate heat insulating material with excellent heat resistance. It has excellent machinability and is ideal as a heat insulating material for transfer, casting, and holding systems such as launders, spouts, floats, header materials for hot top rings and holding furnaces for die casting that come into direct contact with molten aluminum.

■Advantages・Low thermal conductivity, Low heat capacityMolten aluminum can be transferred with minimal reduction in temperature when LUMIBOARD™ is used in the launders between the melting and holding furnace and the die-cast machine. When LUMIBOARD™ is used for the lining of the holding furnace, energy savings can be achieved by raising temperature in a shorter time than conventional castables.・Excellent machinabilityLUMIBOARD™ can be machined in a variety of shapes such as floats, spouts, hot top ring headers, etc. due to its excellent machinability.・Easy to remove solidified metalLUMIBOARD™ is non wettable with molten aluminum so it is easy to remove solidified metal.

■ApplicationsLaunders, Baths for holding furnaces, Floats, Spouts, Hot top ring headers, etc.

■TypesWe have various type of LUMIBOARD™ and we can recommend which type is the best for the application. Please feel free to contact us.

■Physical properties

■Cautions for drying and preheating・As products are shipped from the factory in dry condition, moisture absorption during storage and water absorption from the joint filling sealant during installation could cause cracks when LUMIBOARD™ is in contact with molten aluminum. Please dry LUMIBOARD™ with an electric furnace, heater, or by putting the LUMIBOARD™ in the furnace prior to use.・Please dry formed products for the bath of the holding furnace at approximately 150℃ prior to raising temperature. Please raise temperature at a speed of 25℃ per hour as a guideline and keep the temperature at each of the following points (200℃, 400℃ and 600℃) for 6 to 12 hours.

■Example of application for holding furnace

■Standard dimensions

NICHIAS Corporation was founded in 1896 as a pioneer in thermal insulation materials. For more than a century, NICHIAS has achieved growth by Insulation and Protection technologies which consist of six core elemental technologies that include sealing, thermal insulation, soundproofing, fire-resistant, anti-corrosion as well as clean. These six technologies help protect our natural environment. For example, insulation technologies help reduce CO2 emissions and are energy efficient, while sealing technologies prevent environmental pollution.

”TOMBO"(dragonfly) is a registered trademark or trademark of NICHIAS Corporation.