RSLE-57 Boards

  Christina Park   May 26, 2016     Comments Off on RSLE-57 Boards
RSLE 57

General Info

ZIRCAR Refractory Sheet Type RSLE-57 is a low expansion high strength reinforced silica matrix composite . This remarkable material was designed for use as a high strength insulator in induction hot press applications w.

RSLE-57’s very low thermal expansion coefficient and high hot strength combine to give it thermal shock resistance not found in other structural ceramic matrix composite materials. 

RSLE-57’s exhibits a very low 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. Beyond 1200°C (2192°F) it transforms into a crystalline structure and becomes brittle. If the exceeded temperature is only localized, the material still  retains its original high strength properties.

RSLE-57 also exhibits exceptional non-wetting properties when used in contact with molten aluminum making it useful in numerous molten aluminum contact applications.

RSLE-57 is 100% organic free and contains no refractory ceramic fiber. It is readily machined to precision tolerances with conventional tooling.

ZIRCAR Refractory Composites, Inc. (ZRCI) has developed a new material for the production of diamond segments that is far superior to all other high temperature, high pressure insulation. It has proven to be the best insulation material for Dr. Fritsch as well as other diamond segment sintering machines.

ZIRCAR Refractory Sheet Type RSLE-57 is an integral part of the production of hot pressed diamond segments. It is used as a separator to electrically and thermally insulate a metal frame from a graphite pack. It will see in excess of 1000°C (1832°F) with several thousand pounds per square inch compression without any surface deformation.

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 requires a material with superior hot strength at temperatures as high as 1200°C (2192°F). 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 andinduction heating applications. This thermal stability also helps to increase the life of the graphite.

RSLE-57 will last many times longer than any calcium silicate, mica, asbestos or other hot press insulation, as well as produce a better segment. This will save you time, money, and leave you with less waste material to dispose of.

The majority of diamond segment manufactures in the US, Europe, India and South America has started using our material. They have stated that it will last 10 to 20 times longer in their most demanding hot press/sintering applications. 

Properties

Other unique properties of RSLE-57 are:

  • A low thermal conductivity.

  • An excellent electrical insulation.

  • A high chemical purity.

  • An excellent resistance to corrosion (from molten metal and glass)

  

Thermal Expansion Coeff.  
    Room Temp. to 800°C(1472°F)

0.3 x 10-6/°C

Nominal Composition, wt%  
         SiO2

99.7

         Other Oxides

<0.3

         Organics

0

Density, g/cc(pcf)

1.4(90)

Porosity, %

31

Color

White

Hardness, Durometer “D”

87

Charpy Impact Strength, ft-lb

0.8

Compressive Strength**, MPa(psi)  
         at 2.7% consolidation

48(7000)

Modulus of Rupture**, MPa(psi)

30(4300)

Thermal Conductivity** ASTM C-1113
    W/m°K(BTU/hr ft² °F/in)  
        200°C(392°F)

0.55(3.8)

        400°C(752°F)

0.64(4.4)

        600°C(1112°F)

0.61(4.2)

        800°C(1472°F)

0.67(4.6)

        1000°C(1832°F)

0.75(5.2)

Volume Resistivity, ohm-cm
         ASTM D-257-93

7.5 x 109

Dielectric Strength, volts/mil
         ASTM D-149-95

43

   Linear Shrinkage, % ‡

Length

Width

Thickness

24hrs @ 800°C(1472°F)

0.1

0.1

0

24hrs @1100°C(2012°F)

4.9

4.9

7.9

* Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the material experiences.
** Properties expressed parallel to thickness.
‡ Properties expressed perpendicular to thickness.

Composition

  • High Hot Strength
  • Immune to Thermal Shock
  • Fully Machinable
  • Non RCF

Instructions

APPLICATION INFORMATION

MACHINING GUIDELINES
ZIRCAR Refractory Sheet Type RSLE-57 exhibits a uniformly bound fine-pore structure.  It can be machined to precision dimensional tolerances with conventional carbide tooling following the guidelines outlined below:

  

Cutting Tool

Rotation Speed

Feed Rate

Circular Saw Blade, Carbide tipped, 10″ diam. 24 teeth

3450

15-20 ft/min

4 Fluted Carbide End Mill

1000-2000

15-20 ft/min

 

 

Maximum Tempurature

2012 F / 1100 C

PDF

Download the RSLE-57 Boards PDF File

SDS

ZRCI SDS-0003

Other Information

AVAILABILITY

Please call, fax or e-mail for pricing and availability.

 

Item # Description
HM01 RSLE-57 Boadytonhrds, 610mm X 915mm X 3mm
HM02 RSLE-57 Boards, 610mm X 915mm X 6mm
HM03 RSLE-57 Boards, 610mm X 915mm X 8mm
HM04 RSLE-57 Boards, 610mm X 915mm X 10mm
HM05 RSLE-57 Boards, 610mm X 915mm X 12mm
HM06 RSLE-57 Boards, 610mm X 915mm X 16mm
HM07 RSLE-57 Boards, 610mm X 915mm X 20mm
HM08 RSLE-57 Boards, 610mm X 915mm X 30mm
HM09 RSLE-57 Boards, 610mm X 915mm X 50mm
HS01 RSLE-57 Boards, 24″ X 36″ X 1/4″
HS02 RSLE-57 Boards, 24″ X 36″ X 3/8″
HS03 RSLE-57 Boards, 24″ X 36″ X 1/2″
HS04 RSLE-57 Boards, 24″ X 36″ X 5/8″
HS05 RSLE-57 Boards, 24″ X 36″ X 3/4″
HS06 RSLE-57 Boards, 24″ X 36″ X 1″
HS07 RSLE-57 Boards, 24″ X 36″ X 1 1/2″
HS08 RSLE-57 Boards, 24″ X 36″ X 2″
HS09 RSLE-57 Boards, 24″ X 36″ X 3″
HS12 RSLE-57 Boards, 24″ X 36″ X 1/8″
HS20 RSLE-57 Boards, 36″ X 48″ X 1/4″
HS21 RSLE-57 Boards, 36″ X 48″ X 3/8″
HS22 RSLE-57 Boards, 36″ X 48″ X 1/2″
HS23 RSLE-57 Boards, 36″ X 48″ X 5/8″
HS24 RSLE-57 Boards, 36″ X 48″ X 3/4″
HS25 RSLE-57 Boards, 36″ X 48″ X 1″
HS26 RSLE-57 Boards, 36″ X 48″ X 1 1/2″
HS27 RSLE-57 Boards, 36″ X 48″ X 2″

 

PRICES ARE SUBJECT TO CHANGE WITHOUT NOTIFICATION AND ARE SUBJECT TO ZIRCAR REFRACTORY COMPOSITES, INC. TERMS AND CONDITIONS. ALL PRICES ARE F.O.B. FLORIDA, NY AND ARE IN U.S. DOLLARS

Comments are closed.


Prices are subject to change without notification and are subject to Zircar Refractory Composites, Inc. Terms and Conditions. All prices are F.O.B. Florida, NY and are in U.S. Dollars.

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.

  • ZIRCAR Refractory Composites, Inc.
    P.O. Box 489
    Florida, NY, 10921 USA
    Phone: (845) 651-2200
    Fax: (845) 651-1515
    email: sales@zrci.com