• Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
  • Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
  • Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
  • Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
  • Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
  • Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break

Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break

Type: RFI Filter
Transfer Function: High Pass
Certification: Sgj
Transport Package: Individual Packing
Specification: Non-Standard
Trademark: SGJ
Samples:
US$ 10/Piece 1 Piece(Min.Order)
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Basic Info.

Model NO.
SGJ Electrical Vacuum Alumina Ceramic Metal Seal
Origin
China
HS Code
6914100000
Production Capacity
100000sets Per Year

Product Description

SGJ Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break


The Cable Connector is composed of two parts, plug and socket. The plug and socket support one or several conductor leads with insulating materials. The conductor material is usually made of high quality copper. For special purposes, gold or silver plating is also used to improve the instantaneous conductivity. Insulators are usually made of Bakelite, and special plastics or even insulating ceramics can be used according to the current requirements. The connecting shell is usually made of copper zinc alloy and copper. The connection between plug and socket is usually thread, which will be more firm. In special occasions, plastic or gasket can be used to adapt to the scene of waterproof and dust. If you encounter vacuum equipment, you have to consider using SGJ vacuum brazed ceramic feed-through or isolator to achieve the function of current passing through and other media not passing through.

Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
ItemPartsMaterialsNote
ACeramic Tube96% aluminaEnds metalizing thin layer of Molybdenum
BMetal AdapterKovar 4J33JIS Code KV-4(Ni33Co17)
CElectrodeOFHC CopperOxygen Free High CondCodeuctivity Copper
DWeld LipKovar 4J33JIS Code KV-4(Ni33Co17)
XBrazing AreaSilver+Copper Eutectic AlloyComplete vacuum brazing

SGJ Ceramic Metal Seal Assemblie Electrode/ Insert/ Conductor/ Insert/ Connecter Vacuum Feedthrough

Single Water Cooled Feed Through by SGJ-International (Shaanxi Sgj International Co., Ltd.)
SGJ electrical feedthroughs are manufactured from 96% alumina ceramic insulators, OFHC copper and nickel conductors, and SUS 304 or SUS 316 flanges. These unique ceramic-metal feedthroughs have electrical ratings for operation with one side in dry atmosphere while the opposite end is in a stable vacuum. They are used in ultra high vacuum systems with CF flanges or high vacuum systems with NW flanges. The CF feedthroughs can be bearing from -260 degrees C to 450 degrees C, and DC 5KV.
Designed Water Cooled Feed Through by SGJ-International (Shaanxi Sgj International Co., Ltd.)
Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
CodePartsMaterialsNote
ASS AdapterSS 304 Stainless Steel 304 Coated with Nickel
BSleeveKovar 4J33JIS Code KV-4(Ni33Co17)
CCeramic Tube96% aluminaEnds metalizing thin layer of  Molybdenum
DCapKovar 4J33JIS Code KV-4(Ni33Co17)
EElectrodeOFHC CopperOxygen Free High Conductivity Copper
XBrazing AreaSilver+Copper Eutectic AlloyComplete vacuum brazing
Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break

Model: Electric-Isolators & Adapter: SUS 304 & Sleeve: Kovar 4J33 & Insulator: 96% Alumina

Electrical isolators, consist of metal sleeves brazed to each end of an insulating ceramic tube. They are used to introduce cryogenic fluids into a system and to provide electrical isolation of line components. Vacuum isolators are used to provide an electrical break between the vacuum system and other external components.

 

SGJ isolators typically are made from high-purity alumina ceramics and Metals. The metal hardware is generally a controlled-expansion Kovar 4J33, SUS 304 or OFHC Copper TU1. All materials and braze alloys used are chosen for their specific characteristics and ability to maintain the integrity of the seals for use in demanding applications and environments. The assemblies are brazed together with Silver Copper Eutectic Alloy.


Designed Electrical Isolator by SGJ-International (Shaanxi Sgj International Co., Ltd.)
Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break


Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break

Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
CodePartsMaterialsNote
ACap/SleeveSS 304JIS Code KV-4(Ni33Co17)
BCeramic Tube96% aluminaEnds metalizing thin layer of Molybdenum
CSS AdapterSS 304Stainless Steel 304 Coated with Nickel
XBrazing AreaSilver+Copper Eutectic AlloyComplete vacuum brazing
Kovar Alloy 4J33:
Kovar is a Nickel-Iron-Cobalt, controlled expansion alloy. It's expansion characteristics match alumina ceramics. This alone ensures it is a highly popular controlled expansion alloys for hermetic sealing applications (Mainly used in Ceramic Metal Seal Assemblies)

OFHC Copper TU1:
CTU1/C102 is an oxygen-free copper which has better forming, resistance to hydrogen embrittlement, and brazing characteristics than C110 ETP. CTU1/C102 has good solderability and corrosion resistance and is used for high current applications.

Stainless Steel SUS 304L:
SUS 304L Stainless Steel famous for its resistivity, fall under the category of Stainless Steel Tubes. Threaded, Hot Rolled, Cold Rolled, Heat Exchangers, Annealed, Pickled....  All these products belonging to the SUS 304L Tubes catalog serve as the prime building blocks of electrochemical, shipping, construction and gas industries.

Metallized Alumina Ceramic:
Vacuum brazing of ceramic and metal requires metal coating in the welding area of ceramic. It ensures good air tightness of metal and alumina metallized ceramic brazing joint in vacuum environment. We SGJ have our own unique patented solder formula to ensure the stability and reliability of our products...
 The key of Ceramic-Metal structure based on the vacuum tightness, so called sealing. And , Metallized ceramic bonding area Via vacuum brazing technology is the only solution


Alumina Manufacturing Description:
Alumina Ceramics can be produced in a wide range of purities with additives designed to enhance its properties. Typical purities range from 85 to 99.7% although Precision Ceramics generally work over 99.7% material.

It can be injection molded, die pressed, isostatically pressed, slip cast and extruded. Once fired and sintered, it can only be machined using diamondgrinding methods but prior to sintering advanced green and biscuit machining techniques developed by Precision Ceramics allow more complex components to be manufactured using traditional machining methods. In addition Alumina can be readily joined to metals or other ceramics using metallising and brazing techniques.

Alumina can be machined in green, biscuit, or fully dense states. While in the green or biscuit form it can be machined relatively easily into complex geometries. However, the sintering process that is required to fully densify the material causes the alumiuna body to shrink approximately 20%. This shrinkage means that it is impossible to hold very tight tolerances when machining alumina pre-sintering. In order to achieve very tight tolerances, fully sintered material must be machined/ground with diamond tools. In this process a very precise diamond coated tool/wheel is used to abrade away the material until the desired form is created. Due to the inherit toughness and hardness of the material, this can be a time consuming and costly process.

Precision Ceramics specialises in tight tolerance, highly complex work and has extensive in-house machining facilities - including 4th & 5th axis machining centres, drilling, grinding, milling, polishing, sawing, tapping, threading and turning - to enable us to manufacture Alumina components to the highest specifications.

Precision Ceramics is your Alumina machining specialist for your technical ceramic prototyping & manufacturing needs; we are always happy to use our many years of advanced ceramics experience to provide advice on materials, design, and application. If you would like to buy Alumina plates, rods, tubes or custom machined components, please contact SGJ for more details.


Alumina Electrical Ceramics
Alumina electrical ceramics have low dielectric constant, low dielectric loss, high insulation strength, high volume resistivity, good bending strength, high stability, high compressive strength and good cold and hot shock resistance. It is widely used in temperature controller, insulation parts, thermal equipment, electric heating equipment, iron structure building, shipbuilding and so on. Alumina is the most cost effective and widely used material in the family of engineering ceramics. Extremely High Purity, Temperature & Strength; Excellent Corrosion, High Strength, Wear Resistant, Electronic Insulating, Structural & Metalizing, Porous, Easily Degassed & Machinable. The raw materials from which this high-performance technical grade ceramic is made are readily available and reasonably priced, resulting in good value for the cost in fabricated alumina shapes.
Glazed Alumina Ceramics is a kind of material based on alumina, which is used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance. Alumina ceramics are widely used. Because of its superior performance, it has been widely used in modern society to meet the needs of daily use and special performance.

SGJ 96% alumina is an easily metallisable ceramic composition:

This material SGJ 96% alumina material is an excellent electrical insulator that can be metallised to facilitate high-temperature brazing of assemblies. This material features:

  • Very high volume resistivity
  • Low loss, constant high dielectric
  • High density, non-porous and vacuum tight
  • Resists abrasive wear and chemical attack

The fact that this material can be metallised makes this a good choice for many ceramic to metal or brazed assemblies such as high-vacuum systems, laser equipment (gas, solid-state and waveguide), X-ray tubes and electron microscopes, microwave windows and insulators in medical and scientific equipment.

SGJ 96% Alumina Ceramic Data Sheet:

PropertiesUnitsComposition
Alumina%96
Tensile1000pis30
Flexural1000pis55
Compressive1000pis300
Densityg/cc3.7
Porosity-0
Colour-White
HardnessMoh's Scale9
Thermal Conductivityg. cal/cm-sec-ºC0.049
C.T.E.In/in/ºC x 10-775
Max. Working Temp.ºC1600
Dielectric StrengthD.C. Volts/[email protected]''thick230
Volume Resistivity0hm/cm3 x 10122.0
Dielectric Constant-9.0
Dissipation Factor-0.0003
Loss Factor-0.0028

Follow Products R&D by SGJ-International (Shaanxi Sgj International Co., Ltd.)
Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break
Sgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, BreakSgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, BreakSgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, BreakSgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, BreakSgj Electrical Vacuum Alumina Ceramic Metal Seal Assemblies, Feedthrough, Isolator, Brake, Electrodes, Connector, Insert, Break

 

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Manufacturer/Factory, Trading Company, Group Corporation
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FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others
OEM/ODM Availability
Yes