custom made polished Silicon Nitride ceramic cap shell roller
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
The production and development of ceramics are actually closely related to people’s lives and production practices. In the primitive age about 700,000 years ago, people dried the mud and used fire to grill hard containers for water, food, etc. , This is the beginning of the production of pottery. The latest archaeological data show that the earliest pottery sites found in my country are the Xianrendong site in Wannian County, Jiangxi, the Qingtang in Yingde, Guangdong, the sliding rock caves in Lingshan, and the Zhenpipiyan in Guilin, Guangxi. The main varieties are gray pottery, painted pottery, black pottery and geometric printed pottery, etc. The rough technique, novel and smooth composition, showed the technical level of pottery at that time. Many pottery pieces and pottery jars of various styles were unearthed from the ruins of the Yin Ruins of the Shang Dynasty. The patterns, symbols, and characters on these pottery were closely related to the oracle bone inscriptions and blue ware of the Yin and Shang era. Containers have a wide range of applications, and can be roughly divided into daily necessities, construction, burial, sacrificial gifts, etc. However, the ancient buildings of the Qin and Han dynasties were mostly made of wood, and they were not easy to survive for a long time. Therefore, some great buildings, such as the Afang Palace in the Qin Dynasty and the Weiyang Palace in the Han Dynasty, could not be fully preserved. Relics such as bricks provide a glimpse of the scale of ancient buildings.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
