Molybdenum Disilicide Heating Elements
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 | 6 mm | 3 mm |
| 4/9 | 9 mm | 4 mm |
| 6/12 | 12 mm | 6 mm |
| 9/18 | 18 mm | 9 mm |
| 12/24 | 24 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
Our Delivery programme also includes compatible metallic and ceramic brackets, connecting bands and furnace ducts.