High Mechanical Strength Diamond-Polished Custom Industrial Zirconia Ceramic Bushing

• Customization: Available
• Ceramic Tube & Rod: Ceramic Tube
• Application: Refractory, Structure Ceramic, Industrial Ceramic, Engineering Ceramic
• Model NO.: Customized and standard optional
• Color: White, Black, Brown Optional
• Surface Treatment: Diamond-Like Polishing
• Feature: High Precision, High Mechanical Strength
• Tolerance: Od and ID Best to Be 0.005mm
• Certificate: RoHS, Reach, ISO9001:2008
• Usage: Ceramic Guide Tube, Ceramic Protective Tube
• Material: Zirconia Ceramic
• Type: Ceramic Tubes
• Transport Package: Individual Packaging
• Specification: Max. OD to be 800mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 5000000PCS/Month

Product Description

High Mechanical Strength Diamond-polished Custom Industrial Zirconia Ceramic Bushing

The main characteristics of zirconia ceramic bushing
1. Excellent wear resistance, much higher 276 times than stainless steel
2. Higher density than most of technical ceramics, over than 6 g/cm3
3. High hardness, over than 1300 MPa for Vicker
4. Can withstand higher temperatures up to 2400°
5. Low thermal conductivity, less than 3 W/m.k at room temperature
6. Similar coefficient of thermal expansion as stainless steel
7. Exceptional fracture toughness reaches up to 8 Mpa m^1/2
8. Chemical inertness, aging resistance and not rust forever 
9. Resistance to molten metals due to an extraordinary melting point

The specification of ceramic bushing

Material option	Zirconia (ZrO2),  Alumina(Al2O3), Silicon carbide(SiO2), Silicon nitride(Si3N4)
Forming methods	Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed
Available types	Flanged tubes, slotted tubes, one-end closed tubes, square tubes
Specification	OD can be from 1 to 50mm, length can be from 10mm to 500mm
Precision processing	CNC machining, Precision grinding, Polishing, Lapping,
Tolerance	The tolerance of OD and ID can be 0.001mm,  the tolerance of length can be 0.001mm
Surface quality	Free of cracks, foreign contamination, mirror surface better than Ra0.1
Key parameters	Roughness to be 0.02mm, Parallelism to be 0.001mm

The description of zirconia ceramic bushing
We produce numerous zirconic ceramic bushings from various special configurations, different grades of raw materials, customized surface treatments. Zirconium oxide is an extremely tough technical ceramic with a hardness of >9 Mohs. Zirconia has the highest strength and fracture toughness at room temperature among all the advanced ceramic materials, In addition to withstanding attacks from molten metal, organic solvents, strong acids, and strong alkalis. So zirconia ceramic parts always used in various severe service conditions.

Many of these zirconia ceramic tubings are used in precise assembly devices, like a ceramic plunger, sensor parts in automation, ceramic cup ring for oil printer, so further precision processing is needed via fine grinding, CNC machining and polishing. With in-house comprehensive types of equipment, we are capable of control the critical parameters very well.
Besides zirconia ceramic tubing, we also manufacture a wide range of ceramic valve seats, ceramic plunger, ceramic wire guides, and various complicated zirconia structural ceramic parts.

The gallery of zirconia ceramic tubes
  
 

Datasheet of Technical ceramics

Property	Units	Material
		99.5% alumina	99% alumina	95% alumina	ZrO2 (Y-TZP)	ZrO2 (TTZ)
Density	g/cm^3	≥3.85	≥3.80	≥3.60	≥5.95	≥5.72
Water absorption	%	0	0	0	0	0
Hardness	HV	1700	1700	1500	1300	900
Flexural strength	Mpa	≥379	≥338	≥320	≥1200	≥1200
Compressive strength	Mpa	≥2240	≥2240	≥2000	≥1990	1750
Fracture toughness	Mpa m^1/2	4-5	4-5	3-4	6.5-8	11
Max. service temperature	ºC	1675	1600	1450	1000
CTE	1×10 ^-6/ºC	6.5~8.0	6.2~8.0	5.0~8.0	8.0~9.5	10.2
Thermal shock	T(ºC)	≥250	≥200	≥220	≥300	350
Thermal conductivity(25ºC)	W/m.k	30	29	24	3	3
Volume resistivity	ohm.cm
25ºC		>1 x 10^14	>1 x 10^14	>1 x 10^14	>1 x 10^11	>1 x 10^11
300ºC		1 x 10 ^12	8 x 10^11	10^12 -10^13	1 x 10 ^10	1 x 10 ^10
500ºC		5 x 10 ^10	2 x 10^9	1 x 10^9	1 x 10^6	1 x 10^6
Insulation strength	KV/mm	19	18	18	17	20
Dielectric constant(1Mhz)	(E)	9.7	9.5	9.5	29	28

 

Manufacturing flow chart of technical ceramic parts

We have in-housing comprehensive manufacturing types of equipment, including forming, sintering,
CNC machining, precision grinding, laser cutting, and so on, it helps us to control the quality very well.
Also, it greatly benefits cost control.


FAQs (Frequently Asked Questions)
Q1. Are you a factory or trading company?
A: We are a manufacturer with over 12 year of experience. You are welcome to visit our factory.

Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.

Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours

Q4: 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.

Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.