高精度陶瓷球
高精度陶瓷球,也叫精球。由于其优良的特性,目前已在各行各业得到了广泛的应用。
应用领域:
主要用作阀门球、全陶瓷轴承、测量球、轨迹球、精细研磨球,可以用于高温、耐腐蚀、绝缘、绝磁、无润滑等场合,是腐蚀场合下替代钢球的理想材料。
作为阀门球用途,目前已经成功用于高压均质机、隔膜泵、计量泵、油田抽油泵、高压喷枪等设备中。
产品规格:氧化锆材质0.4mm~50.8mm;
氮化硅材质 2mm~101.6mm。
可提供应级别:G3~G100。
High-precision ceramic ball is widely applied in many areas because of its excellent features.
Application areas:
Mainly used as valve balls、full- ceramic bearings、measuring balls、trackball、fine grinding ball under the occasion of high temperature, corrosion resistance, insulation,non-magnetic, no lubrication and so on. It is the ideal material to replace steel balls.
The high-precsion ceramic balls have been successfully used as valve balls of high pressure homogenizer、diaphragm pumps、metering pumps、oil well pumps、high pressure spray gun and other equipments
Specifications: High-precision Zirconia balls: 0.4mm-50.8mm;
High-precision SiN balls:2mm-101.6mm。
Grade available: G3-G100.
项目Item
|
单位Unit
|
氧化锆
|
氮化硅
|
ZrO2
|
Si3N4
|
||
密度 Density
|
g/cm³
|
6.05
|
3.23
|
吸水率 Water Absorption
|
%
|
0
|
0
|
热膨胀系数
Coefficient of thermal expansion
|
10-6/K
|
10.5
|
3.2
|
杨氏弹性模量
Modulus of elasticity(Young’s Mod.)
|
GPa
|
210
|
300
|
泊松比 Poisson’s Ratio
|
/
|
0.3
|
0.26
|
维氏硬度(HV) Hardness
|
MPa
|
1200
|
1500
|
弯曲强度(室温)
Flexural Strength(@R.T.)
|
MPa
|
950
|
720
|
弯曲强度(700°C)
Flexural Strength(700°C)
|
MPa
|
210
|
450
|
抗压强度(室温)
Compressive Strength(@R.T.)
|
MPa
|
2000
|
2300
|
断裂韧性 Fracture Toughness,KIC
|
MPa·m1/2
|
10
|
6.2
|
热导率(室温)
Thermal Conductivity(@R.T.)
|
W/m·k
|
2
|
25
|
比电阻率(室温)
Electrical Resistivity (@R.T.)
|
Ω·mm²/m
|
>1015
|
>1013
|
最高使用温度(无载荷)
Max.Use Temperature(no loading)
|
°C
|
750
|
1050
|
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