Installation of MoSi2 heating element
- Company Name:Zhengzhou Risesun Electroheat Co., Ltd.
- Membership:Free Member
- Member Since:2001. 03.18
- Country/Region:China
- City:Henan
- Contact:Yang Xuehao
- Related Keywords:MoSi2 heater, MoSi2 heating element
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Zhengzhou Risesun Electroheat Co., Ltd.
[China]
1. Vertically hanging***
Under normal temperature, MoSi2 element is very brittleness, while under high temperature it is plasticity. So, the better way for installation lf the U- type element is to hang it vertically, to the furnace top through the support clamping chuck H. The aim of such way is to avoid putting the mechanical stress directly to the element heat-generating end, or the element will easily break.*****
2. Support clamping chuck***
Support clamping chucks are applied to ?9/18 and ?6/12 two kinds of elements respectively. The whole weight of the element is supported by the support clamping chuck and the position of the element is also determined by it. Therefore, it must be installed carefully to assure that the element is 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.*****
3. Wire clip***
The wire connection clamp connecting MoSi2 element is made of aluminum woven wire or multi-layer aluminum foil. The steel plate outside it only acts as a clamp and isn't used for electric conduction. For ?6/12 element, single rowing wire is used, and for ?9/18 element, double-rowing wire is used. The end of the lead wire should be a little larger than the linear distance between the element and bus.
When the element is installed, the thread fixing the wire clip shouldn't be screwed too much at one time, it can be tightened when the element rises to high temperature, as the element has some plastic and isn't easily broken. The temperature of the wire clip generally shouldn't be higher than 200?. Therefore, the contact voltage between the clip wire and element should be lowered to 0.1V. In order to avoid that the radiation heat is conducted to the clip, the distance between the lower end of the clip and upper surface of the through brick should not less then 50mm. Generally for ?6/12 element, 170A should not be used protractedly and for ?9/18 one, 300A shouldn't used, either.
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