Molybdenum Disilicide Heater Rods High Temperature U W L
Electric Mosi2 Muffle Furnace
Molybdenum Disilicide Heater Rods Application:
SUPER 1700, 1800, 1900 MoSi2 electric mosi2 heater for muffle furnace are
extensively used in the industries of metallurgy, glass, ceramic
refractory,crystal electronic device, industrial furnace
manufacture, etc.. It is an essential ideal element when the
products are sintering in the high temperature.
Attention: MoSi2 elements can not be used in 400 to 700 °C for a
long time, otherwise, it will be powered and damaged due to strong
oxidizing action in low temperature.
Molybdenum disilicide (MoSi2) is a refractory metal silicide that
is primarily used as a heating element. In recent years, its
potential for use as a structural ceramic has been recognised, as
the material combines excellent oxidation resistance and high
elastic modulus at elevated temperatures.
Molybdenum Disilicide Heater for electronics
1) Vertically hanging
Under normal temperature, MoSi2 heater is very brittleness, while
under high temperature, it is plasticity, so the better way to
install U Shape element is to hang it vertically from the furnace
top through the support clamping chuck. The aim of such way is to
avoid putting the mechanical stress directly to the element
heat-generating end; otherwise the element will easily be broken.
2) Support clamp
Support clamp are applied to 9/18 and 6/12 two kinds of elements
respectively. The support clamp supports the whole weight of the
element and the position of the element is also determined by it,
therefore, it must be installed carefully to assure the element
vertically hung. In order to prevent the element from being over
heated locally, the taper part of the element lower end must put
into the furnace chamber.
Physcial property of molybdenum disilicide heater:
| Density | Bending Strength | Hardness | Apparent Porosity | Water Absorption | Elongation | Fracture Toughness | Compressive Strength |
| 5.8g/cm3 | 350Mpa | 12.0Gpa | ±2% | 0 | 4% | 4.5Mpa.m1/2 | 650Mpa |
MoSi2 heater use and maintenance
1. MoSi2 heater belong to Metal ceramic material. They are hard,
crisp and low impact strength at room temperature .Therefore to be
careful to avoid damage during transport and installation.
2. When MoSi2 heater continuously operate in an oxidation
atmosphere, the surface temperature of 1700 type should not exceed
1700 ° C,1800-type should not over 1800 ℃ and for intermittent
use,1700 type-element should not over 1650 ° C,1800type-element
cannot exceed 1750 ℃.
Furnace dryness
New or old furnace not used for a long time needs to be dried
before using. Generally, the drying temperature is 100-200℃.
However, if the element is used for a long time under the low
temperature, it will cause the low-temperature oxidation.
For little furnace, the drying time is short, the influence of
several drying hours is little, but for large furnace, which need
to be dried for a long time, you had better open the furnace door
to ventilate well. you can open the furnace door ajar with the
temperature increment and completely close until the temperature
reach 1000℃ above.
