Silicon nitride forming rolls have been used in roll-forming machines to produce complex variable cross-sections. Si3N4 forming rollers for plastic molding reduce metal-to-roll adhesion, thereby improving product quality. We offer high-quality and fast-delivery silicon nitride forming rollers.

Silicon nitride Performance

Item

Unit

Si3N4

Type

Gas pressure sintered

Density

g/cm3

3.2-3.3

Color

Black, Grey

Young Modulus

GPa

300~320

Vickers Hardness

GPa

15 – 17

Compressive Strength

MPa

2200

Bending Strength

MPa

600-1000

Thermal Conductivity

W/m.K

20-30

Thermal Expansion

10-6/°C

3.2

Max. Working Temp.

°C

1200

Volume Resistivity

Ω ·cm

> 1014

Dielectric Constant

6

Dielectric Strength

kV/mm

12

Fracture toughness

MPa·m1/2

5.0-7.0

*Tested at room temperature

*The above information is for comparison only. The exact characteristics will vary depending on the manufacturing method.

Typical properties of silicon nitride ceramics

-High strength over a wide temperature range

-High fracture toughness

-High hardness

-Excellent wear resistance

-Low thermal expansion and high thermal conductivity

-Good thermal shock resistance

-Good chemical and oxidation resistance

Application of Si3N4 forming rollers

–Silicon nitride ceramic rollers are used in metalworking applications, including rolling mills, where they aid in the shaping of metal plates or rods

–Silicon nitride ceramic rollers are often used in industrial machinery, such as conveying systems, where they come into contact with hot or abrasive materials. Their high-temperature resistance and abrasion resistance make them suitable for continuous and demanding material handling applications

–Used in heat treatment processes and furnaces to support and transport materials at high temperatures. Their ability to maintain structural integrity at high temperatures is critical in these applications

Packing

Silicon nitride forming rollers use appropriate outer boxes and internal buffer materials, and some components are also vacuum-packed.