Molybdenum News Center

MoSi2 some softening in high temperatures (above 1500 degrees), low time and hard and brittle, in order to avoid the stress of temperature change, the beneficial component of thermal expansion and contraction, preferably free-hanging vertical installation methods. Removable lifting element is also more convenient, without waiting for the oven cool down, and you can hot swap. 
 

Take the following precautions when hanging MoSi2: 

1) Application of corundum brick lining material, the mass fraction of the Fe2O3 to be less than 1%, because it is the interaction of the protective film forming fusible silicate component to accelerate the destruction. 

2) cold ends fiery furnace gas leak, not only increases the heat loss of the furnace, and even burn the conduction band clamp and wire clamps, therefore, the best use of asbestos chuck. 

3) due to silicon molybdenum rod is brittle materials, low flexural strength, can not afford carom, protective measures should be taken during installation to prevent breakage. When connected to a conductive tape, asbestos must first chuck (chuck or porcelain) installed, the clamping force is not too large. 

4) silicon molybdenum rod plugs into bricks, in order to avoid mechanical stress generated due to handling move, use a separate plug brick corundum bricks made ​​of foam bricks. 

5) will be equipped with silicon molybdenum rods inserted into the roof tiles ready plug the gap, the plug protruding from the outside to the roof tiles, and it is easy to disassemble. 

6) the conduction band with the already prepared bracket connected, but should avoid the conduction band tension and unnatural distortions mechanical stress. 

7) In order to avoid the chuck due to thermal expansion and contraction of asbestos may cause deformation of MoSi2 sagging available refractory slurry mixing water glass painted at the junction so securely. 

8) When lifting the cone heating portion of the furnace wall at the junction with a distance of about 25mm-3omm, cold ends of the roof should be exposed outside of 75mm, the lower portion of its heat to the bottom should not be less than 50mm. 

9) MoSi2 furnace at intervals of not less than the distance between the centers of the component itself. 

10) must pay attention to two cold ends and wiring part of the balance of gravity when lifting, otherwise it will cause heating portion bending deformation.