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SC1937 Silicon Nitride Forming Roller, Si3N4

Catalog No. SC1937
Color Black
Density 3.21 g/cm3
Flexural strength 800 MPa
Fracture toughness 6.5 MPam 1/2
Thermal stress parameters 569 K

 

Silicon Nitride Forming Roller Description

Silicon Nitride Forming RollersSilicon nitride forming roller is a man-made composite roller synthesized through several different chemical reaction methods. Due to the even performance in high temperature, Si3N4 is a commonly used ceramic material in the metallurgical industry. It has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is also superior, its low thermal conductivity and high wear resistance also make it an outstanding material that can withstand conditions of most industrial applications.

These Si3N4 Forming Rollers have already been applied in roll forming machines which allow complex variable sections to be manufactured, and performance a high profit.  Si3N4 Forming Rollers for plastic forming result in lower metal adhesion to the rollers, enhancing product quality.

There are 5 different methods to produce silicon nitride ceramic, including SRBSN, GPSN, HPSN, HIP-SN and RBSN, make the application and working material different slightly. In these 5 methods of production, GPSN is most commonly used to produce Si3N4 components.

Silicon Nitride Forming Roller Specifications 

GPSN

Property
Color Grey
Mechanical Properties
Density 3.21 g/cm3
Compressive Strength 3000 MPa
Flexural Strength 800 MPa
Weibull-Modulus m 15
Fracture Toughness KIc 6.5 MPa m^1/2
Young‘s Modulus E 320 GPa
Poisson Ratio 0.28
Hardness Vickers (HV 1) 16 GPa
Thermal Properties
Maximum Temperature (Inert Gas) 1200°C
Maximum Temperature (Air) 1100°C
Thermal Conductivity @ 20°C 28 W/mK
Thermal Conductivity @ 1000°C 16 W/mK
Thermal Expansion (20–100°C) 2*10-6/K
Thermal Expansion (20–1000°C) 3.510-6/K
Thermal Shock parameter R1 600 K
Thermal Shock parameter R2 15 W/mm
Electrical Properties
Resistivity at 20°C 10^12 Ωcm
Resistivity at 800°C 10^7 Ωcm
Dielectric constant 6 MHz

 

Silicon Nitride Forming Roller Applications

Silicon nitride ceramic can make products including:
* Advanced ceramic tubes
* Silicon nitride forming rollers
* Ceramic cutting materials
* Cyrol bearing rollers
* Nozzles
* Seal rings
* Tube forming tools
* Mechanical engineering special applications

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