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Customized Alumina machined ring parts Flanges Perforation Processing Precision Ceramics

  • Very good electrical insulation.
  • Moderate to extremely high mechanical strength.
  • Very high compressive strength.
  • High hardness.
  • Moderate thermal conductivity.
  • High corrosion and wear resistance.
  • Good gliding properties.
  • Low density.
  • Operating temperature without mechanical load 1,000 to 1,700°C.
  • Bioinert and food compatible.
Availability:
Quantity:
  • 01070

  • HaoRui

  • custom01001

 Alumina Ceramic Custom Finishing


Alumina ceramic flange


Although flange is not common in life, it plays a great role in the connection between various parts in the industry as well as in the automobile wheel industry. Traditional flange are made of steel, but after its permanent will be corroded, etc. Next Junjie take you to understand the use of aluminium oxide material made of ceramic flange.


Flange is also called flange or flange. Make the pipe and pipe interconnection parts, connected to the end of the pipe. Flange on the eyelets, bolts to make the two flanges tightly connected. Gasket sealing between flanges. Flange is a disc-shaped parts, the most common in pipeline engineering, flange are used in pairs. In pipeline engineering, flanges are mainly used for pipeline connection. In need of flange to connect the end of the two pipelines, each installed a piece of flange, low-pressure pipeline can use silk flange, more than 4 kg pressure using welding flange. Add a gasket between the two pieces of flange, and then tighten with bolts.


Flanges of different pressures have different thicknesses and use different bolts. Pumps and valves, in connection with the pipeline, the localisation of these devices and equipment, also made of the corresponding flange shape, also known as flange connection. Where the two planes in the periphery of the use of bolted connections at the same time closed connection parts, generally referred to as "flange", such as the connection of the ventilation pipe, this type of parts can be called "flange type parts".

Properties of Alumina material (Al2O3)


Property
Item
95% Al2O3
99% Al2O3
99.8%Al2O3
Unit
Mechanical Characteristics
Color
White
light yellow
Ivory

Bulk Density
3.7
3.85
3.93
g/cm3
Water Absorption
0
0
0
%
Bending Strength
300
310
370
MPa
Compressive Trength
2,300
2,400
2500
MPa
Elastic Modulus
320
340
390
GPa
Fracture Toughness
3~4
3~4
4
MPa m1/2
Weber Coefficient
12
12
12
m
Vickers Hardness
1,400
1,600
1850
HV 0.5
Thermal Characterics
Coefficient of Line Thermal
Expansion
7~8
7~8
7~8
10-6 K-1
Thermal Conductivity
20
29
32
W/mK
Thermal Shock Resistance
(Put in Water)
250
200
280
ΔT °C
Max Working Temperature
1,500
1,600
1700
°C
Electrical Characteristics
Volume Resistance At 20°C
>1014
>1014
>1014
Ωcm
Dielectric Strength
15×106
15×106
15×106
V/m
Dielectric Constant
9
10
10
εr
One MHZ Dielectric Loss Angle
at 20°C
0.0004
0.0002
0.0001
tanδ
Chemical Characteristics
Nitric Acid (60%) 90°C
0.1
0.1
0.05
24H WT Loss mg/cm2
Sulphuric Acid (95%) 95°C
0.3
0.34
0.22
Caustic Soda (30%) 80°C
0.9
0.95
0.04


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