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 Technical Products, IncP.O. Box 189, Hubertus, WI 53033 Phone (262) 335-3635 * Fax (262) 335-3606 * Toll Free (800) 869-2008 E-mail: tpi@technicalproductsinc.com  Complete Ceramic Services Lowest Competitive Pricing / Quick Delivery / Top Quality / Expert Design and Technical Assistance Distributor * Fabricator * Prototype & Production |
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Alumina Silicate L911A: VERSATILE * SUPER MACHINABILITY * LOWEST COST We have tons of the finest quality Grade "A" Lava (Alumina Silicate) in stock and ready to deliver. Top quality and low prices- an unbeatable combination. General Grade "A" Lava is a natural ceramic material. In chemical terms it is a hydrous alumina silicate. We supply this material in standard rods, blocks, and plates as well as special shapes. Machining Unfired Grade "A" Lava is a free machining material that can be shaped using most machine tools. The material is non-toxic but as with any airborne dust it could a be respiratory irritant if directly inhaled. Common sense and dust collection systems are recommended. Firing The following procedure should be followed carefully to avoid cracking: Machined parts should be placed in a cool furnace and protected from direct heat radiation. The use of refractory furniture, boxes,or baffles is recommended. A heating rate of 200 ºF - 250 ºF per hour is typical. The rate of heating should not exceed 300 ºF per hour. Parts with cross sections exceeding 1/2" are more critical and cracking may occur during the firing cycle. If a cross section of 1/2" or greater is unavoidable, a heating rate of approximately 50 ºF - 150 ºF per hour and strategically placed stress relief holes may help minimize cracking. The maturing temperature of Grade "A" Lava is between 1850 ºF and 2000 ºF. The temperature should be maintained for approximately 30 minutes up to 1/4" cross section and 45 minutes for 1/2" and greater cross sections. Fired pieces may be removed from the furnace after cooling below 200 ºF. During the firing process, Grade "A" Lava expands approximately 2%. A temperature of 2000 ºF should not be exceeded. If 2000 ºF is exceeded, crystallization, distortion, shrinkage and a loss of stated material properties will occur. As with most natural materials, texture, color, hardness, machinability, final expansion, and ideal firing temperatures may vary. Please feel free to contact our technical staff with any additional questions that you may have. Note: The information provided on this page is given as a guideline only. Specific applications may require other processes.
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We Will Provide Defect-Free Products and Services to Our Customers' Requirements, On Time, Everytime If you found us online, please let us know which search engine you used. Thanks The glory and success of Technical Products, Inc. is due entirely to the benevolence of Our Lord Jesus Christ.We thank him daily. - Dave & Kate Bresina, Owners |
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