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CERAMIC
ELECTRICAL HEATER PARTS
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JYALOX
95% HIGH ALUMINA CERAMIC
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—
stress relieving interlocking insulators for Pre and Post-Heating
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In
welding large structures, pipe works and reaction vessels
etc. it is a commmon practice to locally employ electrical
heating devices to raise the temperature of the metal sections
prior to welding and to control the sudden fall in temperature
after the area is welded.
Jyalox ceramic has excellent electrical properties such as
insulation and heat dissipation which ensure safe operation,
quick and proper heating of area at the elevated temperatures.
The electrical device is in the form of flexible heater mat,
constructed with alumina ceramic interlocking beads. The electric
heating elements are supported by ceramic beads which insulate
the device from the structure being welded.
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Jyalox
ceramic bead insulators available for construction of stress
relieving flexible electricalheater mats. |
Flexible electrical heating mats
find the widest use in stress relieving applications, as the interlocking
pattern of ceramic beads allow maximum fexibility to the mat, to
cover the heating element properly from exposure to the area required
to be heated up, such as concave, convex and flat surfaces of vessels,
pipes etc. Several mats can be connected together to cover large
surface areas of vessels, pipes etc required for stress relief treatment.
Jyalox ceramic stress relieving bead insulators are mechanically tough, strong and wear resistant to withstand abuse of rough handling of heater mats commonly experienced while in use in heavy construction industry.
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Physical and Chemical Properties of
Jyalox-95P Ceramics |
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| • |
Nominal Composition |
: 95% Al2O3 |
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Chemical Analysis |
| • |
Colour |
: Pink |
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| Al2O3 |
= 95.00% |
| SiO2 |
= 1.41% |
| MgO |
= 1.35% |
| CaO |
= 1.16% |
| Cr2O3 |
= 0.75% |
| Na2O |
= 0.16% |
| BaO |
= 0.07% |
| Fe2O3 |
= 0.04% |
| TiO2 |
= 0.03% |
| Others |
= 0.03% |
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| • |
Specific Gravity |
: 3.70 - 3.75 |
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| • |
Flexural Strength |
: 3250 kg/cm2 |
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| • |
Coefficient of linear
thermal expansion
(2,04000°C) |
: 8.8 x 10-6/°C |
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| • |
Thermal shock
resistance
(Down shock VT) |
: 160°C |
| • |
Thermal Conductivity
(20O°C)
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: 24 W/M°K |
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Our design engineers are always
at your service to assist you for use of insulators from the standard
range. We can also develop custom design insulators for stress relieving
applications if the required quantities are substantially large
for economically viable production.
All the above features coupled with good mechanical qualities make
Jyalox beads an ideal carrier of the heating element.
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Jyalox
90 P-W (Pink-White) Aluminium Oxide End Sealing Bushes
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| PATT.
No. |
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ØD |
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ØD1 |
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Ød |
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H |
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h |
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ESB-ALP-101 |
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6.1 |
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4.4 |
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2.65 |
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5.9 |
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2.7 |
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ESB-ALP-102 |
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6.1 |
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4.4 |
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2.92 |
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5.9 |
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2.7 |
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ESB-ALP-103 |
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6.5 |
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4.8 |
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2.65 |
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6.2 |
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2.7 |
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ESB-ALP-104 |
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7.9 |
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5.6 |
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3.25 |
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6.7 |
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2.7 |
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ESB-ALP-105 |
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10.5 |
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8.0 |
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4.7 |
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8.0 |
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3.7 |
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All Dimensions are in mm:
Tolerences : Unless otherwise stated normal tolerences are:
upto 5mm ± 0.15 mm
from 5 to 10 mm ± 0.20 mm over 10 mm ± 2% |
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