furnace heater rods
-Main material: Molybdenum silicon powder
-Shapes:U/W/X/L type
-Dia: 3/6,4/9,6/12,12/24mm

U type Mosi2 furnace heater rods and accessories used for furnace and kilns

The technical parameters of MoSi2 heating elements

MoSi2 heating element is a basis with molybdenum resistance heating elements. The sintering molybdenum products in high temperature oxidation atmosphere, the surface heat to generate a pre-pressing quartz glass, it can keep the membrane products, no longer oxidation. Therefore molybdenum elements of unique oxidation stability. In the next highest temperature oxidation atmosphere for 17 degrees Celsius (no more than quartz melting 1713 degrees Celsius).

MoSi2 heating element with use and resistance changes, also is not aging, so old and new components can be mixed use.

MoSi2 heating element of mechanical properties and other ceramic products at room temperature, easy to be broken, brittle material belongs to transport and install it brings certain difficulties. But if installed and used correctly can be avoided.

A. Size:

1700°C: d x c: Φ3/6,Φ4/9,Φ6/12,Φ9/18,Φ12/24 and so on

1800°C: d x c: Φ3/6,Φ4/9,Φ6/12,Φ9/18,Φ12/24 and so on.

B. physical and chemical properties:

1. Physical Properties

2. Chemical Properties

Oxidation stability, high temperature oxidation atmosphere: under the firing surface, silicon molybdenum rods one pre-pressing quartz layer to prevent the oxidation of MoSi2 continue. When more than 1700 degrees Celsius temperature elements for 1710, melting of SiO2, due to the surface tension of molten layer, melt together, SiO2 lost protection. Next, oxidation atmosphere in again when using, SiO2 re-generate layer.

It must be pointed out that MoSi2 heating elementS can’t be 400-700 degrees within the scope of use for a long time. Because of the low or components will be strong oxidation and become powder.

3. Different atmosphere effect on use temperatures

1) Surface Load:

According to the structure, the temperature and atmosphere in the correct choice of components surface load is the key element to the highest life, based on the thermal radiation components uncrossed circumstance temperature, temperature and surface load components, the shaded part for common surface load - - - - - the temperature range.

2) Electric properties:

MoSi2 heating elements of resistivity become large with larger temperature, under normal circumstances length won’t change with the use time, so the old and new elements can be mixed use.

C. Installation:

MoSi2 heating elements at room temperature, temperature and brittle plasticity, so there is best vertical u-shaped stick, if need to install hanging installation, please choose high level support, refractory MoSi2 heating element placed. Component part must extend to taper chamber, silicon molybdenum rods fixture cannot too tight a twist to heat, stay components, again, this is broken lock components, (with my suggestion: please select the company is equipped with special jig and roof insulation wire), and general stove temperature can’t exceed 300 degrees Celsius. Chuck wires contact with components should be less than 0.1 V voltage, in order to avoid the radiation heat to chuck, chuck and brick bottom of distance above should be not less than 50mm. φ6 elements can’t be used in 170A for long-term use, φ9 components can’t be used in 300A  for a long time.