Product Description
Product introduction:
Silicon nitride ceramic roller rods are made of ultra-fine ceramic powder through isostatic pressing and high-temperature sintering. The entire rod is dense and has zero porosity. , has excellent mechanical strength, fracture toughness, wear resistance and thermal shock resistance. Silicon nitride ceramics can also maintain ultra-high mechanical strength at high temperatures, and the maximum working temperature can reach 1200°C. Excellent resistance to penetration and corrosion of various molten metals and alloys such as aluminum, lead, tin, silver, brass and nickel.
Features:
1.High mechanical strength remains up to 1200ºC
2.High fracture toughness
3.Extremely high hardness
4.Outstanding wear resistance and good self-lubricating property
5.Low thermal expansion
6.Excellent thermal shock resistance which can withstand sudden temperature change
7.Good resistance to acid&alkali and oxidation
Application:
1.Bearing balls and rollers
2.Cutting tools
3.Valves, turbocharger rotors for engines
4.Turbine blades
5.Diesel engine glow plugs
6.Molten metal handling
7.Thermocouple sheaths
8.Welding jigs and fixtures
9. Welding nozzles
Detailed Photos
Product Parameters
Item |
Unit |
Technical parameters |
Materail |
-- |
Silicon Nitride |
Color |
-- |
Black |
Density |
g/cm3 |
≥3.20 |
Vickers Hardness |
Mpa |
1500 |
Modulus of Elasticity |
Gpa |
300 |
Fracture Toughness |
Mpa.M1/2 |
6.2 |
Flexural Strength (@R.T.) |
Mpa |
>720 |
Compressive Strength (@R.T.) |
Mpa |
2200 |
Thermal Conductivity (@R.T.) |
W/Mk |
15-20 |
Coefficient Of Thermal Expansion (20-1000ºC) |
10-6/ºC |
3.0-3.2 |
Poisson Ratio |
-- |
0.26 |
Max. Working Temperature |
ºC |
1200 |
Volume Resistivity (@R.T.) |
Ω.cm |
>1014 |
Dielectric Constant (1MHz, @R.T.) |
-- |
8.2 |
Dielectric Strength |
kv/mm |
16 |
Company Profile
Brief Introduction:
Henan Fireramo Industrial Co.,Ltd. is located in Songlou Industrial Zone, Xinmi City, Henan Province, China, which is one of the largest refractory base in China. The factory of us covers an area of 108,000 Square Meters with more than 1 billion RMB fixed assets. There are around 400 employees in our factory, including 20 board members, 10 technicians, and 4 plant managers. Fireramo is a new technology enterprise specializing in manufacturing, production, sales and consultant of refractory materials for various industry, such as, cement plants, glass factories, steel plants, chemical & oil industries.
Fireramo has been established since 1998. We do both domestic and overseas business. Our products have been sold all over the world, especially to Iran, Turkey, Pakistan, Korea, UAE, Saudi Arabia, Kuwait, Syria, Qatar, Russia, etc.
Factory Equipment:
R&D:
Fireramo has its own engineering technology center and testing laboratories, which can meet the testing requirements for various kinds of products and raw materials, and the research and development of new products. At the meanwhile, we have a well-equipped and skilled furnace construction team that can provide users with service items such as furnace design, construction, rapid maintenance and operation technical training, etc.
Capacity:
Our manufacturing company includes two high alumina brick and fireclay brick production lines, two silica brick production lines, two unshaped production lines and two lightweight brick production lines. The total production capacity reaches 148,000 tons, of which the annual output of high alumina clay brick production line is 50,000 tons, the annual output of silica brick production line is 60,000 tons, the annual output of lightweight production line is 18,000 tons, and the annual output of unshaped production line is 20,000 tons.

Our Advantages
- Around 30 years history for producing and supplying refractories for high temperature industries
- Advanced raw materials selection, production and packing equipment
- Professional and responsible technical, engineering and sales team
- First-level management team and R&D team
- The location of Central Plains Hub to ensure convenient transportation
- Self-own logistics team to ensure the timeliness of transportation
- Timely and effective after-sales service team