Ceramic thread guides
Alumina Ceramic thread guides are used in textile machineries to guide, to change direction, to twist, to control tension of textile yarns.
Alumina Ceramic Textile Eyelet Guides Advantages:
* Wear resistance
* Frictional characteristics of the guide surface
* Chemical resistance
* Fracture strength
* Surface structure (not to damage the yarn)
* Corrosion resistance Commonly used ceramic materials are corrosion resistant to most chemicals and are thermally stable.
Alumina Ceramic Textile Eyelet Guides Advantages:
* Wear resistance
* Frictional characteristics of the guide surface
* Chemical resistance
* Fracture strength
* Surface structure (not to damage the yarn)
* Corrosion resistance Commonly used ceramic materials are corrosion resistant to most chemicals and are thermally stable.
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Alumina Ceramic Property
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Property
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Unit
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92% Alumina Ceramic
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95% Alumina Ceramic
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99% Alumina Ceramic
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Density
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g/cm3
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≥3.63
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≥3.68
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≥3.83
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Water absorption
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%
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O
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O
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O
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Sintering temperature
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°C
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1500-1700
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1600-1800
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1700-1800
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Hardness
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HV
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≥1400
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≥1500
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≥1650
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Flexural strength
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Kgf/cm2
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3000
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3000
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3000
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Compressive strength
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Kgf/cm2
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24000
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25000
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26000
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Fracture toughness
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Map.m3/2
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3~4
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3~4
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4~5
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Maximum temperature
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°C
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1600
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1700
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1800
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Coefficient of thermal expansion
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/°C
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8*10-6
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8*10-6
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8*10-6
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Heat shock
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T(°C)
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220
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220
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220
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Thermal conductivity
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W/m.k(25-300°C)
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25 14
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25 14
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25 14
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20°C
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>1012
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>1012
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>1012
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