Lindaje01
03-08-20 0 Просмотров

Production Description High alumina ceramic crucible is suitable for the analysis and melt of metal or non-metallic samples in a variety of laboratory and industrial applications. Product Features 95% Alumina Alumina is a very hard and dense material, it exhibits resistance to both high temperature and corrosion with a simultaneous high mechanical strength, which is why it can be used at high temperature applications of up to 1700 掳C. The excellent electrical insulation strength helps aluminum oxide ceramics become a leading material for high voltage applications such as gas ignition. Almost all shapes are available. In case of dirt adhesion during use, alumina can also be glazed. The application of aluminum oxide ceramics can be everywhere, it is the aluminum oxide that is the number one in terms of application depth and popularity, like substrates and resistor cores in the electronics industry, thread guides in wire and cable engineering, seal and regulator discs for water taps and valves, heat dissipating elements for lighting systems, protection tubes in thermal processes and catalyst carriers for the chemicals industry. 99% Alumina CeaGoo offers an aluminum oxide material of the highest quality, with a purity of 99.5% and 99.7%. 99% alumina exhibits more excellent properties than 95% alumina as below: High breaking strength Very high heat resistance Good thermal conductivity Very high degree of hardness and wear resistance Electrical insulation, even at high temperatures Corrosion resistance in diluted acids and lyes Low-friction surface with reproducible surface properties Material Properties PropertiesUnits95% Alumina99% Alumina Physical Density, rg/cm33.53.7-3.97 Crystal Structure hexagonalhexagonal Water Absorption% @R.T.00 Hardnessknoop (kg/mm2)11751440 HardnessR45N7883 Mechanical Compressive StrengthMPa @ R.T.20682600 Tensile StrengthMPa @ R.T.221262 Modulus of ElasticityGpa303394 Flexural Strength (MOR)MPa @ R.T.358379 Poisson's Ratio, u 0.210.27 Fracture Toughness, KIcMPa x m1/24.54.5 Thermal Max. Use TemperatureoC17001750 Thermal Shock ResistanceDT (oC)250200 Thermal ConductivityW/m-K @ R.T.2535 Thermal Expansion Coefficientmm/m-潞C8.28.4 Specific Heatcal/g-oC @ R.T.-0.21 Electrical Dielectric Constant1MHz @ R.T.99.6 Dielectric StrengthkV/mm8.38.7 Electrical ResistivityWcm @ R.T.>1014>1014 Production Technology Hot pressing (Slip casting) Working Principle: Mix the material powder, water and wax by the special ratio to get the final raw material, then press the raw material into the mold, the pressure is about 10-20kg. Since the material has been mixed with wax, so it will turn into a solid quickly during the process of pressing, we call the solid green body. The green bodies need to remove the wax first before the final sintering. Because if the wax hasn鈥檛 been removed fully, the bodies are easy to be cracked when final sintering. Advantages: 1. Can form the items which have complicated sharp, but not applicable to the big size. 2. The tooling cost is lower, can be controlled under 300USD per set. 3. No highly request for the qty., also available for the small volume. Disadvantage: 1. Not applicable to the thick products since the wax removing will be hard to be made. 2. Will have a longer lead time, since the wax removing process leads to more reworking. 3. The production capacity depends on the workers and molds. Note: Slip casting also have an automate production option, just has much higher mold cost and high request on the quantity. FAQ Q: What kind of materials can you offer? A: We supply the products based on alumina, zirconia, steatite, cordierite, mullite and so on. Q: Are the free samples available? A: Yes, the samples are free of charge, but the shipping cost need to be collected. Q: How long will the offer take when you get the inquiry? A: Generally, the quotation will be supplied within 24hours. Q: Are you trading company or manufacturer? A: We are manufacturer and welcome to visit us. Q: What are your terms of payment? A: T/T in advance and Paypal in advance. Q: How to contact us? A: Send an email to 鈥渋nfo@ceagoo.com鈥?or call to 鈥?086 (0)571 86823662鈥?/p>Alumina Crucible suppliers website:http://www.ceagooceramic.com/ceramic-crucible/alumina-crucible/


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