Installationof silicon molybdenum rods
1.Verticalsuspension
Siliconmolybdenum rods at room temperature brittle large, high temperatureand plasticity. So the U-type silicon molybdenum rod is the bestinstallation method is vertical suspension. The silicon molybdenumrod is vertically suspended from the top of the furnace by means of aretaining clip. The purpose of this installation is to avoid themechanical stress added to the silicon-molybdenum rod heating side,or easily lead to broken silicon molybdenum rod.
2.Fixedclip
Theweight of the entire silicon molybdenum rods are borne by the fixedclip, the position of the silicon molybdenum rod is also determinedby it. Therefore, it must be carefully installed to ensure that thecomponents are vertically suspended. In order to avoid localoverheating, silicon molybdenum rod bottom cone part must be extendedinto the furnace.
3.Connect the tape
Contactwith silicon molybdenum rods are made of aluminum braid ormulti-layer aluminum foil. Outside the clip only play a clampingeffect, not to conduct electricity. The end of the wire is connectedto the bus. In order to avoid the mechanical stress spread to thesilicon molybdenum rod, the wire length should be slightly largerthan the linear distance between the silicon molybdenum rod and thebus.
Wheninstalling the components, the screws on the chuck do not twist tootightly until the silicon molybdenum rod rises to high temperatureand then tighten, because this time the silicon molybdenum rod has acertain plasticity, easy to break. Chuck part of the temperature isgenerally not higher than 200 degrees Celsius. Therefore, the chuckwire and silicon molybdenum rod contact voltage should be reduced by0.1V. In order to avoid radiation heat transfer to the chuck, chuckthe bottom and wear the top of the distance should not be less than50mm. In order to avoid damage, the general diameter of 6 / 12mmsilicon molybdenum rod can not be long-term use of 170A, diameter 9 /18mm silicon molybdenum rod can not be long-term use of 300A.
