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Structural Grade Refractory

RATH SG Products are versatile non-asbestos refractories reinforced with ceramic fibers to increase the toughness, reliability and overall performance of the ceramic composite.

SG-70 and SGM-MU contain continuous fibers for "non-brittle behavior" and can withstand extreme thermal shock within specified temperature ranges. Chemically inert, these composites are durable and machinable. These SG products are supplied in large sheets/boards and other engineered shapes. They are excellent material choices for structural insulating applications, and are natural replacements for asbestos-cement, silicate/mica/phosphate-based materials and monolithic ceramics where superior performance is required.

SG-90A and SG-99A are high alumina sheets, which were developed for structural insulation and parting applications. Based on high purity and high alumina content these products are the ideal choice in vacuum furnaces and other special atmosphere heat treating units.

Advantages:

Non-brittle (SG 50, SG-70, SGM-MU) Good reflectivity Contain no asbestos Good oxidation barrier Low shrinkage Good mechanical strength High dielectric strength Good electrical resistance Good thermal shock Excellent abrasion resistance

Applications:

Induction furnace components

• Channel melter components (brass foundry)
• Coil liners
• Box plates
• Coreless induction furnace
• Components (superalloy casting)
• Coil support, upper fitting, spacer, and riser blocks
• Splash and coil shields
• Crucible hold downs
• Coil support spacer rings
• Lower chamber lining

Non-ferrous metal holding / transport equipment

• Aluminum filter homogenizer and purifier
• Curstbreaker plunger face aluminum holding furnace

Element support/spacers

Special atmosphere furnaces

Specialty furnace components

• Bottom support for quartz furnaces
• Low temperature kiln furniture

Specialty HT electrical insulation

• Reflector shields for high intensity lights
• Electrical resistor grids in locomotive dynamic systems
• Internal lining for glass tempering furnaces

Oven components

Compression plate insulation

• Electric insulators for induction pressing of diamond saw segments

HIP application

Glass component fabricating and handling equipment

• Dead plates, set out plates, wear guides, and pusher pads