Molybdenum disilicide (MoSi2) heating element is a resistance generate-heating component made from MoSi2 or the basic material. It is used in hightemperature under theoxidizing atmosphere, it looks like glass in its surface and form a light SiO2 glass film which can protect the element not to beoxidized. So this kind of element has unique effect for resisting oxidization in the high temperature. It is used to the highest temperature up to1800 degree celsius during oxidizing atmosphere. According to your request, our company can produce the products of Pole, "U", "W" and "U"-rightangle shapes, etc
Having the same mechanical character as other ceramic products , MOSI2 heating elements are brittle materials so that they are easy to rupture atthe normal temperature ,which brings some difficulties to transport and install , but it may be avoided if they were installed and used correctly .
Application
Silicon molybdenum rod electric heating element products are widely used in metallurgy, Research and production of steelmaking, glass, ceramics, refractory materials, crystals, electronic components, and semiconductor materials manufacturing and other fields, especially for high-performance precision ceramics, high-grade intraocular lenses, precision structural cermets Production of porcelain, glass fiber, optical fiber and high-grade alloy steel.
It can be widely used in such applications as sintering and heat treatment of ceramics, magnet, glass, metallurgy, refractory, etc.
Advantages
Mosi2 heating element can quickly form a thin and adhesive anti-oxidizing layer of quartz glass(Sio2), under the high temperature oxidizing condition. If the protective layer was damaged, the element can reform a new one, so Mosi2 heating element has a very good anti-oxidation properties, it also means that the heating element can be used on operation for a much longer time than the traditional one.
The resistivity of the Mosi2 heating element is not changing with the time, so a new one can be installed without effecting the old one, this can result of huge saving in furnace maintenance fee sand time as well, increase the working efficiency, this is the key point of Mosi2 heating element being a better material and being widely used.
Product Parameters
Physical Properties
Volume Density
|
Bend Strength
|
Vichers-hardness
|
Porosity Rate
|
Water Absortion
|
Hot Extensibility
|
| 5.5-5.6 kg/cm3 |
15-25g/cm2 |
(HV)570kg/mm2 |
7.4% |
1.2% |
4% |
Recommend surface load:
| Furnace Temp(°c) |
1400 |
1500 |
1600 |
1650 |
1700 |
| Surface load of hot zone(W/cm²) |
<18 |
<15 |
<12 |
<10 |
<8 |
Chemical Properties
Oxygen-resistance under high temperature: in oxidizing atmosphere, a layer of compact quartz (SiO2) protective film is formed on the surface of element owing to the high-temperature combustion, which prevent Mosi from continuously oxidizing. When the element temperature is higher than 1700ºC, the SiO2 protective film will be fused because fused because its fusing point is 1710ºC and the SiO2 is fused into molten drops owing to the action of its surface extension, which cause losing its protective ability. In the oxidizing atmosphere, when the element is contiguously used, the protective film forms again.
It should be pointed out that element cannot be used for rather long time in 400-700ºC. Otherwise, it will be powdered owing to the strong oxidizing action in low temperature.
Product Specification
Molybdenum disilicide MoSi2 rod heating element size:
1.Diameter:3/6mm;6/12mm;9/18mm;12/24mm
2.length:from 150 to 700mm,customized is available .
3. Operation temperature: from 500C to 1800.C .
4.Rod shape : straight type ;U type ; W type ;L type and other special type
5.Function: ceramic ,magnetic material,glass ,metallurgy ,fireproofing material furnace .
Installation Instructions
1)Vertically hanging
Under normal temperature, MoSi2 element 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.
| Small furnace (power100KW) |
Large furnace(Power 100-500KW) |
| Furnace temperature |
Voltage |
furnace temperatureºC |
Voltage |
| 20-150 |
1/3 Operating voltage |
1/3 Operating voltage200-300 |
1/3 Operating voltage |
| 150-500 |
2/3 Operating voltage |
300-700 |
2/3 Operating voltage |
| 500-operating temperature |
The Whole-Operating Voltage |
700-Operating temperature |
The Whole-Operating Voltage |
Detailed Photos
Silicon Molybdenum Features:
1. It has anti- oxidation and automatic repair.
2.function and can be used continually in oxidative atmosphere.
3.We are using thermal processing in shape,which maintains a very good high-temperature tenacity and plasticity of the basic materials.
4.The cold and hot end welding aspect, it uses special joint technology to take shape.
5.The product has high density that greatly improves the conductivity of the product.
6.good surface quality, high mechanical strength and toughness.
M1700 type (d/c): dia3/6, dia4/9, dia6/12, dia9/18, dia12/24
M1800 type (d/c): dia3/6, dia4/9, dia6/12, dia9/18, dia12/24
(1). Le: Length of Hot Zone
(2). Lu: Length of Cold Zone
(3). D1: Diameter of Hot Zone
(4). D2: Diameter of Cold Zone
(5). A: Shank Spacing
Please let us know these information when you book an order for the MoSi2 muffle furnace heating element.
Packaging & Shipping
Company Profile
1. Our company is a high & new technology enterprise specially engaged in developing, manufacturing and selling Molybdenum disilicide(MoSi2) heating elements.
2. It established in the year 2007, with more than 16 years experience for produciton.
3. Products are exported to USA, Germany, France, Poland, Spain,Turkey, Russia, Ukraine, Japan, Korea, Singapore, Vietnam, Thailand and Iran,
etc.. They are highly approved by our customers all over the world.
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