Molybdenum News Center

Introduction of Silicon Molybdenum Rods

U-type silicon molybdenum rod is molybdenum disilicide heating elements, the most commonly used specifications, in the electric equipment components by supporting chuck will hang vertically mounted, to avoid mechanical stress applied to heating element side, otherwise easily lead to fracture components .

Continuous work: long-term high-temperature silicon molybdenum rod continuous work, the surface film gradually evaporate, so stick to the surface of the body from the inside physical equilibrium thermodynamics, when the surface of silicon lowest concentration gradient enough to form silicide phase, molybdenum oxide, volatile ionizing , and in the new interface of molybdenum disilicide protection film is formed on the quartz glass, and so continue to evaporate, raw film, components are constantly thinned until the local minimum section was blown overload failure. This is mainly a continuous furnace silicon molybdenum rod failure modes.

Intermittent work: U-type silicon molybdenum rod quartz glass film on the surface of the heating and cooling process of the thermal stress, cracking caused by the thermal expansion and contraction, caving, thinning, cracks and caving in a new re-forming a protective film on the surface , there appears below the element surface pits, after a certain number of alternating component surface diameter 1; 2mm, depth 0.2; 0.5mm continuous pockmarked face, and finally at the minimum cross sections overtemperature blown. This is mainly in the form of the gap furnace failure.

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