| consisting of Molybdän-Disilizid (MoSi2) with ceramic additives.
There are two qualities available:
MD 31: for max. element temperatur up to 1700 °C
MD 33: for max. element temperatur up to 1800 °C
Moly-D has the ability to withstand oxidation at high temperatures
by forming a protective layer of quartz (SiO2) on its surface.
MOLY-D-Elements has a low specific
electrical resistivity with a positive resistance-temperature characteristic.
That means, if the temperature is increasing the resistance of Moly-D-Elements will increasing too.
So, at a constantly voltage, Moly-D has a high element-power at a low temperatur which reduces the warm-up time
of the furnace up to the operating-temperature and gives so an economical advantage.
Because of its high temperature oxidation resistance, MOLY-D electrical resistance remains
constant at constant temperature over its lifetime. This permits the use of old and new
elements together in the same furnace, even if series-connected.
Typical application range for MOLY-D-Elements
are:
steel industry
metal working industry
glass industry
ceramic industry, as well as laboratory furnaces
delivery forms:
2-shank bent elements are available in the following standard sizes:
| Typ |
Terminal-
diameter
Lu |
Heating-zone-
diameter
Le |
3/6
4/9
6/12
9/18
12/24 |
6 mm
9 mm
12 mm
18 mm
24 mm |
3 mm
4 mm
6 mm
9 mm
12 mm |
Elements with cranked heating-zone or terminals are also available.
Spacing between shanks:
| Typ 3/6: |
a = 20 / 25 / 40 mm |
| Typ 4/9: |
a = 20 / 25 / 40 mm |
| Typ 6/12: |
a = 40 / 45 /50 / 60 mm |
| Typ 9/18: |
a = 50 / 60 mm |
| Typ 12/24: |
a = 60 / 80 mm |
| (other sizes and 4-shank elements available on request) |
Max. length of heating-zone depends on element temperature which is for
| 3/6 elements: |
610 mm |
| 6/12 elements: |
1250 mm |
MOLY-D-Elements are defined by:
- Material quality
- Diameter heating-zone in mm
- Diameter terminal in mm
- Terminal-length in mm (Lu)
- Heating-zone length in mm (Le)
- Spacing between shanks in mm (a)
example: MD-31, 6/12 mm, Lu = 400 mm, Le = 500 mm, a = 50 mm |
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