China 1850 Mosi2 Rod Electric Furnace Heating Elements for Furnace

MoSi2 Electric Heating Element for Electric Furnace
Mosi2 heating element is a type of resistance heating elemnet composed of high perity molybdenum disilicide. When heated to a high temperature in an oxidizing atmosphere,a layer of compact quartz glass forms on the surface of the element which withstands oxidation. In an oxidizing atmosphere, its maximum temperature can reach 1800ºC,and its applicable temperature is 500-1700ºC. It cna be widely used as heating elements in high temperatuer furnaces for a varity of industried including ceramics, magents, glass, metallurgy, refractory and many others. We named our Mosi2 heating elements as Synthe super.
Specification
Condition NewColorGrayPlace of OriginZhengzhou,China(Mainland)Working Temperature1000ºC-1800ºCDimension(L*W*H)CustomizedPower SourceElectricPower(W)All DependsVoltageAll DependsVolume Density5.8~6.2g/CM3WeightAll DependsTypeAir HeaterShape:U,W,L and customized

Material Grade1600/1700/1800/1850ShapeU, I, W, ULHot zone length100-300mmCold end length150-300mmDiameter6-9mmMosi2 electric heating element and Mosi2 electric heating element accessory
1. High purity MoSi2 heating element, for various electric furnaces, especially dedicate for high purity furnace
2. Max. working temperature 1800 ºC
3. Long life combined with ease of replacing failed elements contributes to a high degree of utilization of the furnace and low maintenance costs.
5. New and old elements can be connected in series
6. High power concentration may be applied
7. Can be used continuously or intermittently
8. Fast ramping
Advantages
Product has the capabilities to resistance to oxidation and automatically repair, suitable for continued using in any kinds of oxidizing atmospheres.
Product is shaped in hot-working process, which keeps the base material in good tenacity and plasticity at high temperature. The geometrical figure, standard and dimension is canonical, may produce any special shape and any dimension to meet the customer requirement.
Because of the special technology, welding spot is fast and shock resistance, which dramatically reduced the damaged probability of welding spot by electric current, as well as transit and installation.
High density increases its electrical conductivity. The characters of faster warming and power consumption low, which reduce production cost.
Good appearance quality and tenacity, high mechanical strength.
Protective layer of quartz glass is compact and good adhesion with the substrate
Excellent high temperature strength which is not easy to deform in use
Physical Properties
Bulk DensityBending StrengthHardnessWater AbsorptionHeated ElongationFracture ToughnessCompression Strength≥5.8g/cm3350MPa9.9GPa≤0.2%≤4%4.5MPa.m1/2650MPa
Chemical Properties
MoSi2 Heating Element has the ability to withstand oxidation at high temperatures. This is due to the formation of a thin and adhesive protective layer of quartz glass (SiO2) on the surface. When the element temperature over 1700ºC, SiO2 protective layer which melting point is 1710ºC was fused, and because of the surface tension, it fused into drops, which is useless. However, when element continue working in oxidizing atmospheres, the SiO2 protective layer is spontaneously rebuilt.
Notice: It is no good to use Molybdenum Disilicide Heating Element for Long-term within a range of 400-700ºC, otherwise the element will be powdered by the strong low temperature oxidation.
Indicators in Different Atmospheres
AtmosphereTC1700TC1800MR1800TC1850Air1700180018001850Nitrogen1600170017001750Argon,Helium1600170017001750Dryhydrogen, dewpoint -80ºC1150115011501200Moist hydrogen, dewpoint 20ºC1450145014501500Exogas (Ex. 10% CO2, 5% CO, 15%H2)1600170017001750Exogas (Ex. 40% H2, 20% CO)1400145014501500Crackedand partially burnt ammonia1400140014501500