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China, Chinese High Temperatures Necessitate Cooling Water-Cooled Power Feedthrough1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Industrial Ceramic ProductsCeramic SealMetal Feedthroughs for Vacuum TechnologyCeramic to Metal Seal
Xiamen Innovacera Advanced Materials Co., Ltd.
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Product Description Water-cooled power feedthroughs are often used in applications where high temperatures necessitate cooling. This includes high-amperage applications where the cooling allows more amperage to be pushed through the conductor without raising temperatures past specs. The typical applications is the connection terminals of vacuum furnaces and heaters. There are also high-frequency coils that enter and exit water. Generally, they are low-voltage and high-current, and a small part of them are high-voltage. Because the current passing through is relatively large, it is concerned that the temperature generated by the current will be too high. Therefore, internal water is generally used for heat dissipation. The diameter of the existing electrode conductive rod is 12mm (200A), 16mm (350A), 20mm (500A), 30mm (1000A). Alumina Ceramic PropertiesPropertiesUnitsAlumina CeramicPuritywt%95%99%99.8%Volume Densityg/cm33.653.8≥3.89Water Absorption%000Crystal Size(Grain Size)μm4-54-54-5Vickers Hardness, HV1.0Gpa141600≥15Flexural StrengthMpa300310≥300Coefficient of LinearExpansion20-500oC1x10-6 mm/oC6.5-7.56.5-7.56.5~7.520-800oC6.5-8.06.5-8.06.5~8.0Thermal ConductivityW/m·K( 20oC)2025≥20.9Specific Heat CapacityKJ/(kg·K)≥0.8≥0.8≥0.8Dielectric StrengthKV/mm≥1215*106≥12Volume ResistivityΩ·cm 20oC≥1014≥1014≥1014Ω·cm 300oC≥1011≥1011≥1011Ω·cm 500oC≥109≥109≥109Dielectric Constant1MHz99-109-10Tangent of Dielectric Loss1MHz≤4x10-4≤2x10-4≤3x10-4Surface Roughnessμm0.4 After Machine0.1-0.4 After Machine0.1-0.4 After MachineMax Working TemperatureoC160016001650
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