Refractory Sheet Type RSLE-570 pages

SILICA COMPOSITES
Types RSLE-57 Boards, RSLE-501
Cylinders and RSLE-56 Moldable
ZIRCAR Refractory Composites, Inc. produces a comprehensive range of advanced high performance ceramic-ceramic
composites and related products. Our materials are used around the world in demanding thermal, structural and
electrical insulating applications at temperatures from 600°C(1112°F) to 1650°(3002°F). For over twenty-five years we
have been a problem solver working with many industries to resolve their thermal management problems. We have
developed materials that have become industry standards for induction melting, forging and heat-treating applications,
investment casting, glass processing, hot pressing, as well as many high temperature electrical applications.
ZIRCAR Refractory Sheet Type RSLE-57 is a low
expansion, high strength reinforced silica matrix
composite. Designed for use as a high strength
insulator in induction hot press applications, it is
ideal for any application which require a material with
superior hot strength at temperatures as high as
1200°C (2192°F). Beyond 1200°C (2192°F) it begins
to transform into a crystalline structure. RSLE-57
maintains its properties up to 1650°C (3002°F)
providing that there is no significant fall in
temperature. At these elevated temperatures, this
material will exhibit surface glazing, but will retain
its strength and integrity.
RSLE-57’s exhibits a very low thermal coefficient
of expansion (0.3 x 10 - 6 °C) which provides
remarkable resistance to the thermal shock up to
1200°C (2192°F) in an oxidizing atmosphere and
permits its use with rapid variation in temperature in
that zone.
RSLE-57’s very low thermal expansion coefficient and
high density combine to give it thermal shock
resistance not found in other structural ceramic
composite materials. These properties give it much
greater life in most hot pressing and induction
heating applications.
RSLE-57 also exhibits exceptional non-wetting
properties when used in contact with molten
aluminum, zinc, lead, tin and other non-ferrous
metals, making it useful in numerous casting,
RSLE-57 is an integral part of the production of hot pressed diamond
segments. RSLE-57 is used as a separator to electrically and
thermally insulate a metal ram from a graphite pack. It will see in
excess of 1000°C (1832°F) with several thousands pound per square
inch compression without any surface deformation.
conveying, containing and forming applications.
RSLE-57 is the ideal material for use as Dams,
Spouts, Floats, Launders, Head Boxes, Baffles,
Headers, Tips, Rings, Distribution Boxes, Stoppers,
Basins, Snouts, Transition & Orifice Plates and Hot
Top & Ingot Mold Liners.
RSLE-57 is 100% organic free and contains no
refractory ceramic fibers, (RCF’s).
APPLICATION INFORMATION
MACHINING GUIDELINES
ZIRCAR Refractory Sheet Type RSLE materials exhibit a uniformly bound fine-pore structure. Thye can be machined
to precision dimensional tolerances with conventional carbide tooling following the guidelines outlined below:
Cutting Tool
Circular Saw Blade, Carbide tipped, 10" diam. 24 teeth
4 Fluted Carbide End Mill
ZIRCAR Refractory Composites, Inc.
P.O. BOX 489, FLORIDA, NY 10921-0489
Tele: (845) 651-2200, Fax: (845) 651-1515
e-mail: sales@zrci.com
Home page: http://www.zrci.com
Rotation Speed
3450
1000-2000
Feed Rate
15-20 ft/min
15-20 ft/min
Technical Data
Bulletin No. ZRCI-201
July 2005
This information, which is subject to change, is offered solely for your consideration and should not be taken as a warranty or representation for which we assume legal responsibility. It is not to be understood
as permission or recommendation to practice a patented invention without a license and the user should determine whether relevant patents exist.