GEK Wiki / Ceramics
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Ceramics

Page history last edited by jim mason 7 years, 5 months ago

 

 

From Zircar

 

 

Atmospheres

Oxidizing

Reducing

Inert

Vacuum

What is Your Process Environment?

If all thermal processes required an oxidizing or inert atmosphere, the issue of process environment would not be of much concern. The world is not so simple. Fortunately ZIRCAR offers high quality insulation products which are suitable for use in a variety of industrial environments. Our SiO2 bonded products provide the highest temperature rating and dimensional stability of all compositions-when used in an oxidizing or inert atmosphere. For reducing atmospheres, which dissolves SiOat temperatures over 1200°C, our "AA" Al203bonded products contain virtually no free SiO2. Even though all ceramic fiber products are hydrophilic and want to absorb H20 from the atmosphere our alumina bonded and specially processed AL-30AAH has so little relative surface area that once its atmospheric moisture is driven off its vacuum suitability is established.

 

Binder

Temperature
Use Range

Atmosphere

Products

None

300°C to 1800°C

All

Alumina Blanket & Bubbles

SiO2

Cryogenic to 1825°C

Oxidizing, Inert

SALI, ZAL, ASH, AX, ZIRPOR, ZMAG

Al2O3

300°C to 1700°C

Reducing, Vacuum, Inert

ZAL-AA, AL-30AA,
ECO-20AA

 

 

 

Castable Pour Refractories

 

Zircast95 http://www.zircarceramics.com/index2.htm

instructions for pouring http://www.zircarceramics.com/pages/particulates/ziralcast95mixing.htm

 

From the DIY forge and knifemaking guys.    

Mizzou and Cast-o-lite brands.  the Cast-0-lite insulating pourable refractory has a k of 0.58  watt/meter-degK.  castolite is by harbison walker http://www.hwr.com/

http://www.hightemptools.com/castablerefractory.html

 

DIY insulating castable refractories with perlite

http://www.myheap.com/chapter-1-materials/how-to-make-irc.html

 

harbison walker http://www.hwr.com/   Moldable

INSWOOL MOLDABLE is a 2300°F ceramic fiber, putty-like consistency material, used for linings up to three inches thick, to pack large voids, or even fill thin cracks. It can be troweled or hand packed into place.

INSWOOL MOLDABLE is light weight, with very low thermal conductivity, and therefore a good insulator, yet it develops a strong hot face surface to withstand physical abuse and high air velocities as compared to conventional ceramic fiber products. It is also used as a high temperature gasket material, and as a general purpose patching product. Its ability to compress makes INSWOOL MOLDABLE an excellent material for expansion joints and for filling contraction cracks. It is also an ideal material to fill ceramic cuplock anchors for ceramic fiber blanket linings, and can be used in contact with molten aluminum.

INSWOOL MOLDABLE has excellent thermal shock resistance, and can be dried or put into service immediately with no pre-heat required, with the exception of direct molten metal contact. Then the INSWOOL MOLDABLE should first be thoroughly dried, and fired, to remove all mechanical water the entire depth of the material, to avoid dangerous steam explosion.

 

Pumpable

INSWOOL PUMPABLE is a 2300°F ceramic fiber, putty-like consistency material, especially formulated for pumping with special equipment. It is usually used for pumping behind existing hot face linings for insulating purposes; however it can be used to fill small voids and thin cracks.

INSWOOL PUMPABLE is a light weight material with very low thermal conductivity, and therefore a good insulator. It dries to a firm, board-like consistency, for good sturdy integrity. Its ability to compress makes it ideal for expansion joints, and for filling contraction cracks. In addition it is used in contact with molten aluminum.

Although normally used as a backup material for hot spots, as mentioned above, when used as a hot face material, the INSWOOL PUMPABLE has excellent thermal shock resistance, and can be dried or put into service immediately with no pre-heat required, with the exception of direct molten metal contact. Then the INSWOOL PUMPABLE should first be thoroughly dried, and fired, to remove all mechanical water the entire depth of the material, to avoid dangerous steam explosion.

 

 

Pastes and Moldables

http://www.zircarceramics.com/pages/moldables/index.htm

 

 

Custom shapes and machinable insulation assemblies

Zircar microsil.  k= .02

http://www.zircarceramics.com/pages/microporusinsulation/microporous.htm

 

 

 

Refractory surface coatings.  Metal flux protectors.  Radiant reflectors

http://www.hightemptools.com/itcproducts.html

http://itccoatings.com/coatings/

 

  • ITC-100 HT Ceramic Coating is a versatile high temperature coating that has proven to achieve outstanding energy savings and refractory protection.  Use it alone or as a base coat for other ITC products.  It is used as a covering for ceramic fiber insulation or castable refractory. This material reflects radiant heat back into the furnace or forge to achieve high temperatures quickly and efficiently.
  • Unique high temperature materials used in the ceramics, metalworking and aerospace industries. ITC-100 is particularly well known in the blacksmithing and ceramics communities as a protective coating for gas forge and pottery kiln linings. It is recommended to use over Kaowool, Inswool, Fiberfrax or other refractory blanket materials to prevent damage as well as airborn refractory dust. ITC-100 and 296A improve the IR reflectivity of all furnace linings improving fuel efficiency and overall throughput. It is also a good protectant for other expensive refractory linings (fiber, castables and fire brick).  

 

ITC for metal protection

https://secure.anvilfire.com/page.php?theLocation=/Resources/Product/ITC/ITC-213.xml/

 

good source of ITC products at anvilfire.com  https://secure.anvilfire.com/page.php?theLocation=/Resources/Other_Public_Pages/International_Technical_Ceramics

 

Emisshield. 

http://www.hwr.com/products/Product_Applications/AB2-Crucible_Furnaces-rev_03-07.pdf

 

 

 

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