China Ceramic Alumina Tube manufacturer

Gas Discharge Metallized Ceramic Tube Beads Cylinder Shaped Smooth Surface

Product Details:
Place of Origin: Hunan, China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.MC.018
Payment & Shipping Terms:
Minimum Order Quantity: 10 Piece/Pieces
Price: Negotiable
Packaging Details: Vacuum packing with desiccant
Delivery Time: 4~5 weeks
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 20000 Piece/Pieces per Month

Detail Information

Product Name: Metallization Ceramic Beads Material: Alumina Ceramic
Color: Pure White Shape: Ceramic Cylinder, Ceramic Tube
Size: Size Customized Type: Ceramic Parts
Metallization Type: Mo-Mn Metallization As Base Layer Outer Plating: Ni, Au, Ag Further Covering
Certificate: ISO9001:2008/SGS/ROHS Usage: Joint From Ceramic To Metal
High Light:

ceramic tube for furnace

,

ceramic vacuum interrupter

Product Description

High Insulation Alumina Metallization Ceramic Beads for Gas Discharge Tube

Specification of ceramic metallization beads:

1. Shaping methods: Dry pressing, hot pressing, Isostatic pressing and so on
2. Types of metallized ceramic tube: both end open, one end closed, multiple holes
3. Dimension capability: min. the inner diameter can be 1mm, max. the outer diameter can be 800mm
4. Raw material: 95~99.5% alumina(Al2O3), zirconia(ZrO2), Beryllia (BeO) optional
5. Precision process: CNC machining, fine grinding, drilling, laser cutting and so on
6. Surface treatment: external and internal polishing, glazing and so on
7. Surface quality: free of cracks, bubbles without any foreign contamination on the internal and external surface
8.The thickness of metallization : Mo/Mn with 15~40 micros, Ni plating with 2~6 micros, Ag plating: 20~70um, Au plating: 0.2~1um
 

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 


Material Data. Sheet

 

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 produce lots of different types of metallized ceramic components, including ceramic cylinders for electron tubes, ceramic insulators for high-currency feedthrough, ceramic part for X-Ray tube and so on.

Gas Discharge Metallized Ceramic Tube Beads Cylinder Shaped Smooth Surface 1 

 

 

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.

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