High Precision Low Friction Wear Resistance Zirconia Ceramic Valve Seat

• Application: Refractory, Structure Ceramic, Industrial Ceramic, Engineering Ceramic
• Type: Ceramic Parts
• Product Name: Ceramic Valve Seat
• Density: Over 6g/cm3
• Color: White, Black, Brown Optional
• Surface Treatment: Diamond-Like Polishing
• Model NO.: Customized and standard optional
• Tolerance: Od and ID Best to Be 0.005mm
• Certificate: RoHS, Reach, ISO9001:2008
• Feature: High Precision, High Mechanical Strength
• Usage: Ceramic Holder, Structure Ceramic Parts
• Material: Zirconia Ceramic
• Transport Package: Individual Packaging
• Specification: Max. OD to be 800mm
• Trademark: JingHui
• Origin: China
• HS Code: 8547100000
• Production Capacity: 5000000PCS/Month

Product Description

High Precision Low Friction Wear Resistance Zirconia Ceramic Valve Seat

The main features of the zirconia ceramic valve seat
1.High density:  over 6 g/cm³, which makes it the densest body of the ceramic products
2.High hardness: over 9 on Mohs scale, diamond being 10, with a satin-smooth surface finish
3.High toughness: over 1200 MPa, approx. 4 times in comparison with 95% alumina
4. Excellent wear resistance, it's much better than aluminum oxide ceramics with longer life cycle
5. Low thermal conductivity:  less than 3 W/m.k at ambient temperature, so it's an ideal thermal material
6. Good chemical and corrosion resistance, it's equivalent to above 99% alumina

The specification of ceramic parts

Material option	Zirconia (ZrO2),  Alumina(Al2O3), Silicon carbide(SiO2), Silicon nitride(Si3N4)
Forming methods	Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed
Specification	OD can be from 1 to 50mm, length can be from 10mm to 800mm
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
Key parameters	Roughness to be 0.02mm, Parallelism to be 0.001mm
Surface quality	Free of cracks, foreign contamination, mirror surface better than Ra0.1

The description of the zirconia ceramic valve seat
Zirconia ceramic valve seat is a key part of the various pumps, valves in household appliances, electrical appliances, and industrial applications. It plays a decisive role in liquid, gas, oil sealing, and controlling performance. 

With zirconium oxide ceramic outstanding properties, such as wear-resistance, chemical resistance, low thermal conductivity, high thermal expansion coefficient similar as stainless steel, very low friction coefficient, zirconia ceramic seal rings have been creating a very positive impact on aging features, service life-span, productivity, dependability in industrial equipment, mechanical engineering, like the food and beverage industry, medical equipment, electrical devices and so on.

Besides the ceramic seal ring, we also produce a variety of customized ceramic valve seat, ceramic ball valve, ceramic valve disc, ceramic piston and plunger for fluid, gas, oil-controlling / regulating system.

The gallery of zirconia ceramic parts 
 

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 of over 15 years 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.