Industrial High Insulation Aluminum oxide Vacuum Interrupter Tube
Prime characteristics of metallized vacuum interrupter tube:
1. Exceptional bonding/brazing strength up to 150MPa/mm2
2. Superb low leak rate below to ≤1×10-11 Pa•m3 / s
3. High mechanical strength up to 320MPa at least
4. Electrical insulation strength up to 18KV. DC at least
5. Extremely anti-corrosion and free of rust forever
6. Can work under high temperature up to 1450℃
Description of aluminum oxide vacuum interrupter tube :
We have been producing metallized ceramic vacuum interrupter tube
for ages. With our comprehensive in-house manufacturing types of
equipment, we support a variety of prototyping needs, also we are
capable of dealing with mass production.
All these vacuum interrupters tubes have excellent insulation
resistance, high bonding strength, extreme low leak rate in their
applications.
Specification of vacuum interrupter ceramic tube:
Material
96% alumina
99% alumina
99.5% alumina
Zirconium oxide
Beryllia oxide
Shaping methods
Hot pressing
Dry pressing
ISO pressing
Dimensions
OD up to φ300mm
Length up to 500pcs
Nominal tolerance
OD: ±0.10mm
ID: ±0.20mm
L: ±1mm
Surface treatment
External surface glazed
Internal surface polished
Metallization types of alumina vacuum interrupter ceramic tubes
● Ceramic body + Silver (Ag) plating
● Ceramic body + Molybdenum-Manganese ( Mo-Mn) metallization
● Ceramic body + Molybdenum-Manganese ( Mo-Mn) metallization +
Nickle ( Ni ) plating
Applications: High current/voltage feed-through insulators, Headers, High-power
receptacles, Insulating discs, Insulator rings and cylinders,
Precipitator products, Power switches, Traveling wave tubes,
Windows, Power grid tubes, X-ray tubes
Technical Datasheet of Regular Materials
General
Property
Units
99%Al2O3
95%Al2O3
ZrO2
Mechanical
Density
g/cm3
≥3.80
≥3.60
≥6.0
Water absorption
%
0
0
0
Hardness
HV
1700
1500
1300
Flexural strength
Mpa
≥338
≥320
≥1200
Compressive strength
Mpa
≥2240
≥2000
≥1990
Fracture toughness
Mpa m 1/2
4-5
3-4
6.5-8
Thermal
Max. service temperature (Non-loading)
℃
1600
1450
1000
CTE (20-800℃)
1×10 -6 /℃
6.2~8.0
5.0~8.0
8.0~9.5
Thermal shock
T(℃)
≥200
≥220
≥300
Thermal conductivity (25℃ )
W/m.k
29
24
3
Specific heat
1 x 10 3 J/(kg·K)
0.78
0.78
0.46
Electrical
Volume resistivity (25℃ )
ohm.cm
＞1 x 10 14
＞1 x 10 14
＞1 x 10 11
Insulation strength
KV/mm
18
18
17
Dielectric constant (1Mhz)
(E)
9.5
9.5
29
Other related metallized ceramic tubes
We could produce lots of different types of metallized ceramic
cylinders for electron tubes, vacuum interrupters, vacuum breakers.
Packaging proposal & Transportation methods
1. Vacuum packing with desiccant as an inner package;
2. Then, exported carton as an outer package.
3. Finally, it will be packed with a wooden case if needed.
4. We regularly use DHL, UPS, FedEx, and TNT to ship small parcels.
5. For large volume orders, we could ship it by sea as per
customers' needs.
FAQs (Frequently Asked Questions)
Q1: Is it available to produce customized products?
A: We always support custom-made metallic coated ceramic insulators
as per different dimensions, designs, metallization, and platings.
Q2. When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If
you are in urgent need of getting the price, please call us or tell
us in your email so that we will proceed with your inquiry as a
priority.
Q3. How long can I expect to get the sample?
A: After you pay the sample charge and send us confirmed files, the
samples will be ready for delivery in 4 weeks. The samples will be
sent to you via express and arrive in 3-5 workdays. You can use
your own express account or prepay us if you do not have an
account.
Q4. How long does the whole procedure being worked out?
A: After you place an order, the manufacturing time is about 25
working days.
Q5. How to ensure quality?
A: The dimension out of any batch will be carried out sampling
inspection per International AQL standard. A 100% cosmetic
inspection will be done.
Q6. Are you a factory or trading company? A: We are a professional manufacturer. We are warmly welcome
clients from worldwide to visit our factory and cooperate with us.
Jinghui Industry Ltd is a trusted and professional manufacturer of
technical ceramic components, we dedicated to developing,
manufacturing, sales, and service of a variety of industrial
ceramic parts over 15 years since its establishment in 2005.
The facility focus on producing metalized ceramics, pepper/spice
ceramic mechanisms, zirconia ceramic parts, thermostat ceramics,
ceramic seals and other plenty of electronic and industrial ceramic
parts in a selection of technical ceramic materials, such as
alumina, zirconia，Silicon carbide, Silicon nitride, and steatite
and so on. They are mainly used in electronic appliances,
equipment, and mechanical engineering, automotive industry, medical
technology, new energy and environmental protection, aerospace and
so on.
The enterprise acquired ISO9001: 2008 in 2009, all of us in Jinghui
persist the policy “No quality, No development", and it helped us
succeed in exporting to European, North America, Southeast Asia and
South America more than 50 countries through all Jinghui people's
effort, innovation, and initiative.
Many amazing solutions were to be supplied to our customers to
reach their ’toughest technical challenges. Our goal is to find a
better and optimal solution for all our customers from technology,
quality, cost control, and after-sales service, we are looking
forward to cooperating with you to create a totally new business in
your field.
