REFRACTORIES FOR HEAT TREATING

Transcription

1 REFRACTORIES FOR HEAT TREATING SAINT-GOBAIN INDUSTRIAL CERAMICS

2 Saint-Gobain Industrial Ceramics Refractories for Heat Treating Applications Saint-Gobain Industrial Ceramics (SGIC) produces high-performance refractories that stand up to the demands of tough heat treating applications. At temperatures where other products warp, craze and crack, our products are engineered to maintain dimensional integrity. SGIC manufactures a variety of products specifically for annealing specialty steels and for sintering powdered metal or carbon/graphite parts. Our refractories are engineered for longer life, dimensional stability, and chemical compatibility. We understand that our refractories are an integral part of your day-to-day operation and that you need maximum performance with minimal variability. Our marketing team is a unique combination of engineers and materials scientists who will work with you to design, engineer and deliver the high performance refractories you require. Products backed by superior research and engineering At our Northboro and Worcester, Massachusetts R&D facilities, we engineer advanced materials and products as well as provide solutions to customers applications. For example, salt and pepper kiln furniture (alumina and (SiC)) and mullite coatings for SiC were developed for applications where chemical compatibility and purity were concerns. In addition to our engineering services, we can provide a range of R&D capabilities which include: R & D capabilities include: Localized chemistry and microscopy with a scanning electron microscope (SEM) Wet chemistry Mechanical testing at room and high temperatures Creep, tension and compression measurements Carbon, nitrogen and oxygen analysis Particle size analysis Oxide firing capabilities to 1700 C Atmosphere firing to 2100 C Finite element analysis (computer modeling) X-ray diffraction for phase analysis X-ray radiography for non-destructive evaluation Cover Photography courtesy of:

3 Muffles SiC muffles are a high performance, low cost alternative to alloy muffles. SiC provides excellent thermal conductivity and good corrosion, thermal shock and wear resistance. High purity alumina muffles provides exceptional purity required in atmosphere furnaces; they have good hot strength and wear resistance. Hearth plates SiC plates provide superior oxidation resistance, wear resistance, thermal efficiency and strength. Alumina and Mullite plates provide good strength and purity in atmosphere furnaces where chemical compatibility is important. Brick Alundum and Alfrax high-purity alumina brick offer exceptional purity required in atmosphere furnaces. For more information, please fax or mail the enclosed fact sheet, visit our website or call your SGIC application engineer. Tel: Fax: Website:

4 Radiant Tubes Crystar RB and Silit SK SiC radiant tubes provide greater corrosion and temperature resistance than alloys. SGIC is the first manufacturer in the U.S. to produce these gas-tight tubes. Kiln furniture (e.g., setters, saggers, pusher plates, batts, boats ) SiC and Alumina kiln furniture enhance productivity in demanding applications. They deliver thermal shock resistance, chemical compatibility, creep resistance, oxidation resistance and dimensional stability. Beams SiC beams offer excellent strength and oxidation resistance. Saint-Gobain is the leader in engineering LO-MASS SiC designs used to increase setting space in load-bearing applications.

5 Product Availability Hearth Plates Muffles Brick, Block, Shapes Alundum /Mullfrax /Mulnorite Alundum Dense High Purity Alundum/Mullfrax/Mulnorite Alundum Dense High Purity Cryston/Refrax Alundum Dense High Purity Crystolon Carbofrax Alundum Insulating High Purity Cryston /Refrax Crystar/Advancer /Crystar RB/Silit SK Alfrax Insulating High Purity Radiant Tubes Kiln Furniture Beams Crystar RB/Silit SK Alundum/Mullfrax/Mulnorite Crystar/Advancer/Crystar RB/Silit SK/ Crystolon Hexoloy Cryston/Refrax Crystar/Advancer/Crystar RB/Silit SK Features and Benefits Product Features Benefits Alundum/ Mullfrax/Mulnorite Excellent thermal shock resistance Good creep resistance Chemically compatible with most products Can be used in fast-fire furnaces Excellent dimensional stability throughout the life of the product Can be used in most applications without setting sands/wash Alundum Dense High Purity Alundum Insulating High Purity Alfrax Insulating High Purity 99.55% Alumina Excellent strength at temperature Wear resistance Good thermal shock resistance compared to other high Alumina refractories 99.8% Alumina Strongest high-purity bubble brick on the market 99.2% Alumina Light weight, low heat capacity, low permeability, minimal reheat change Minimal fall-out*, even in dry hydrogen at elevated temperatures Long-term creep resistance Long life in abrasive applications Can be used as hearth plates and kiln furniture Negligible fall-out*, even in dry hydrogen at elevated temperatures Can be used as hot face refractory Negligible fall-out* in dry hydrogen below 2300 F Excellent insulating properties for hydrogen atmosphere furnaces Crystolon Cryston/Refrax Carbofrax Dry Good oxidation resistance Good thermal conductivity Good creep and wear resistance Dry Excellent oxidation resistance Excellent thermal conductivity, creep resistance, and wear resistance Dry Good oxidation resistance Good thermal conductivity, creep resistance, and wear resistance Will not glaze while in service Increased life, even in oxidizing atmospheres Can be used in fast cycle pusher or roller hearth kilns Excellent material for hearth plates Will not glaze while in service Excellent life, even in oxidizing atmospheres Can be used in fast cycle pusher or roller hearth kilns and is an excellent material for muffle sections and hearth plates Will not glaze while in service Increased life, even in oxidizing atmospheres Can be used as a muffle in fast-cycle pusher or belt furnaces Crystar/Advancer/ Crystar RB/Silit SK/ Hexoloy Superior creep resistance Superior strength Superior oxidation resistance Superior thermal conductivity * Recondensing of impurities which were reduced and volatilized in the hot chamber. Thinner cross sections increase available space and decrease kiln furniture mass Superior life in oxidizing atmospheres Superior thermal shock resistance Improved furnace efficiency

6 SAINT-GOBAIN INDUSTRIAL CERAMICS Saint-Gobain Industrial Ceramics, Inc. 1 New Bond Street P.O. Box Worcester, MA Saint-Gobain Industrial Ceramics makes high-performance refractories to meet virtually any industrial need. For detailed information about products that address specific industry concerns, please contact us at Fax: Website: