Specifications
Molybdenum disilicide rods (MoSi2 rods)1.ISO9001:2008 quality authentication
2.No byproducts, no pollution
3.Long life
molybdenum disilicide rods (MoSi2 rods)
We specialize in producing and selling U type molybdenum disilicide,W type molybdenum disilicide,U type right angle Molybdenum disilicide,U type bending molybdenum disilicide,I type molybdenum disilicide,L type molybdenum disilicide,The specification is Φ3,Φ4,Φ6,Φ7,Φ9,Φ10,Φ12.Our product have good reputation at home and abrode.
1) Description
1. General Description: MoSi2 heating element is a resistance generate-heating component made from MoSi2 or the basic material. It is used in high temperature under the oxidizing atmosphere, it looks like glass in its surface and form a light SiO2 glass film which can protect the element not to be oxidized. So this kind of element has unique effect for resisting oxidization in the high temperature. It is used to the highest temperature up to 1800C during oxidizing atmosphere.
2. Specific Properties: low expansion coefficient, little deformation, stable chemical property, long service life, easy installation and maintenance, etc.
3. Characteristics: MoSi2 heating element can usually make use of furnace temperature from 1300C to 1800C. It is used to the highest temperature up to 1800C during oxidizing atmosphere.
4. Application: It is 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.
2) Products specification:
In addition to MoSi2 elements in standard shapes and sizes we provide special designed MoSi2 elements according to customer needs, enabling an optimized element design for each particular application.
1. Types: U, W,, rod type. Or special types according to your requirement.
2. Diameter: 3/6 mm, 4/9 mm, 6/12mm, 9/18mm, 12/24mm
3. Temp: 1300-1800 Celsius degrees
4. Quality: ISO9001:2008 quality system authentication
Packaging Detail: | outer wooden box, cartoon box inside, polyfoam filled to ensure safety |
Delivery Detail | one week |
3) Technical Data
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 |
4) The influence of operation temperature on the heater surface in a different atmosphere
Atmosphere | 1700 Type | 1800 Type |
Air | 1700 | 1800 |
N2 | 1600 | 1700 |
He | 1600 | 1700 |
-80°C Dry H2 | 1150 | 1150 |
-20°C Wet H2 | 1450 | 1450 |
10%CO2, 50%CO, 15%H2 | 1600 | 1700 |
40%CO2, 20%CO | 1400 | 1450 |
Cracked and Partially Burnt Ammnia | 1400 | 1450 |
5) MoSi2 heating elements physics and chemistry characters:
1. Physics Characters
Volume Density | Bending Strength | Vickers Hardness | Porosity | Water absorption | Heating Elongation Rate |
5.5 g/cm3 | 15-25 kg/cm3 | (HV)570kg/mm2 | 7.4% | 1.2% | 4% |
2. Chemistry Character
MoSi2 heating element is used in the high temperature under oxidizing atmosphere. It will form the SiO2 film which can keep the element from being melted. During the oxidizing process, the SiO2 protecting film is formed again when the element continues to be used. The MoSi2 heating element must not be used in the temperature between 400C and 700C for a long time, otherwise the element will be cremated under the strong oxidizing function in the low temperature.
6) MoSi2 Heating Element's installation:
1. The resistivity of the Mosi2 heating element is not changing with the time, so a new one can be installed without affecting the old one. This can result of the 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.
2. The brittleness of MoSi2 heating element is relative more under the usual temperature; it also has plasticity under the high temperature. So you had better hang and erect vertically the "U"-shape element. If you need to erect it horizontally, please choose a support of high-temperature insulating materials. The cone-part of the element must extend inside the furnace. At first the fixture of MoSi2 power connector can’t be screwed too tightly. When temperature of the element is going up, please twist it tightly again, so the element is not easily broken.
