Silicon nitride plunger has extremely high wear resistance, corrosion resistance, high temperature resistance, and impact resistance, and its service life is 7 to 12 times longer than that of metal plungers. Due to the self-lubricating effect of silicon nitride ceramics, the surface of the inner cavity adopts a fluid structure without dead corners or grooves.

The silicon nitride ceramic plungers produced by our company are formed by cold isostatic pressing and a unique assembly method, ensuring excellent performance.

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 hardness,

-Wear resistance

-High temperature resistance

-Corrosion resistance.

-Self-lubricating effect

Application of Silicon nitride plunger

As the core component of plunger pumps, it is widely used in various plunger pumps in electric power, ceramics, petroleum, food, medical, textile, chemical, and other industries to replace metal plungers.

As Medical plunger pumps, high-pressure water pumps, high-pressure injection machines, high-pressure water cutting machines, ultra-fine grinding equipment, fine chemicals, electronic slurries, semiconductors, new energy, nano-new materials, lithium battery pumps, metering pumps, etc. field.

Oil field usage results show that the use of silicon nitride ceramic plungers can not only significantly increase crude oil production, but also significantly reduce heavy oil production costs.

Packing

Silicon Electrical plungers use appropriate outer boxes and internal buffer materials, and some components are also vacuum-packed.