Hv High-Voltage Alumina Ceramic Porcelain Insulators

• Application: High-voltage, High-temperature, Insulation Ceramic
• Material: Porcelain
• Structure: Pin Insulator
• Type: B Type Insulator
• Usage: High Voltage Power Transmission, Insulation, Electrical Installation, Advanced Ceramic Parts
• Connection Method: Trough Type
• Model NO.: Customized
• Size of Bearing Capacity: 550KN
• Certification: ISO9001
• Color: White
• Brand: Jinghui Ceramics
• Product Name: Alumina Ceramic Insulator
• Forming Method: Dry Pressed, ISO Pressed, Hot Pressed
• Grade of Material: 96%, 99%, 99.5% Alumina
• Density: Over 3.65g/cm3
• Secondary Process: Fine Grinding, CNC Machining
• Surface Treatment: Polishing, Glazing, Metalizing
• MOQ: 1PCS
• Features: High Precision, High Insulation
• Certificate: RoHS, Reach, ISO9001
• Transport Package: Individual Packaging
• Specification: Max. 800mm mmx 1000mm x 30mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 500000PCS/Month

Product Description

HV High-voltage Alumina Ceramic Porcelain Insulators

Product Introduction

With our machining and manufacturing capabilities, Jinghui Ceramics can offer a wide range of standard and customized products in advanced ceramic insulators. Our ceramic insulators are made from high-purity aluminum oxides such as 95%, 99%, and 99.8% depending on the application. We offer ceramic insulators in the market in various technical specifications and grades, with very high accuracy if required.

Aluminum oxide (Alumina) has an extensive application due to its versatility and low cost of material than other advanced ceramics. Alumina offers high electrical insulation resistance, high-temperature resistance, strong hardness, wear resistance, and good chemical stability. This makes it an ideal material choice for applications requiring high temperature and corrosion resistance

The specification of the technical ceramic insulator

Option Materials	alumina, zirconia, silicon carbide, silicon nitride, steatite optional
Outer diameter	0.5 ~800 mm
Length	1~1000mm
Roughness	To be Ra0.05
Surface treatment	Polished, Glazed, Metalized availability
Cosmetic	Smooth surface without no contamination, deformation, and crack

The accuracy achieved after precision machining
(1) Axis: roundness 0.002 mm, concentricity 0.002 mm, smoothness Ra0.1;
(2) Hole: the minimum processing hole diameter is 0.2 mm and the depth is up to 6mm;
(3) Slot: min. value to be  0.1 mm  of narrow groove, and grooves with custom shapes;
(4) Plane: 0.1mm sheet with minimum processable thickness, parallelism 0.001mm, measurement tolerance 0.001 mm, finish Ra0.1; 
(5) Thread: The minimum machinable M2 internal thread, the accuracy of GB-7h, the external thread size is not limited, and the accuracy is GB-6g.

We also produce

The gallery of other alumina ceramic parts

Remark:
We produce a series of alumina ceramic products, including alumina metalized ceramics, ceramic substrates, ceramic wafers, ceramic guides, and so on.

Technical Datasheet

Datasheet of technical ceramic materials

Property	Units	Materials
		99.5%Al2O3	99%Al2O3	95%Al2O3	ZrO2	Si3N4
Density	g/cm^3	≥3.85	≥3.80	≥3.60	≥6.0	≥3.2
Water absorption	%	0	0	0	0	0
Hardness	HV	1700	1700	1500	1300	1550
Flexural strength	Mpa	≥379	≥338	≥320	≥1200	≥600
Compressive strength	Mpa	≥2240	≥2240	≥2000	≥1990	≥2500
Fracture toughness	Mpa m^1/2	4-5	4-5	3-4	6.5-8	6
Max. service temperature (Non-loading)	ºC	1675	1600	1500	1000	1200
CTE (20-800ºC)	1×10 ^-6 /ºC	6.5~8.0	6.2~8.0	5.0~8.0	8.0~9.5	3.1
Thermal shock	T(ºC)	≥250	≥200	≥220	≥300	≤1000
Thermal conductivity(25ºC)	W/m.k	30	29	24	3	15~20
Volume resistivity (25ºC )	ohm.cm	>1 x 10^14	>1 x 10^14	>1 x 10^14	>1 x 10^11	>1 x 10 ^12
Insulation strength	KV/mm	19	18	18	17
Dielectric constant(1Mhz)	(E)	9.7	9.5	9.5	29