万能拉力机测试隧道窑高温炉加热棒碳化硅管陶瓷烧结U硅碳棒物品性能评估
在新窑建成或旧窑进行大修后，烤窑工作至关重要，以便于放料生产。在条件允许的情况下，我们建议使用其他热源进行烤窑操作。如果确实需要使用硅碳棒，那么建议优先考虑使用旧的硅碳棒。正如我们之前提到的，高温环境下的水蒸汽对硅碳棒是有害的，而新建的料道中往往含有大量水分，而且硅碳棒可能会长期处于高功率状态，并且表面温度较高。不管是用旧的还是新的硅碳棒进行烤窑，都应该将控制系统设置为“手动”模式，在开始送电时，逐渐调节加到棒上的电压，不超过额定电压的一半，让其预热一段时间，当电压和电流稳定后，再逐步增加电压。当需要加速升温时，可以辅助加热，但必须注意不要让火焰直接接触到硅碳棒，以免导致快速氧化。
carbonized silicon, also known as black silicon carbide and green silicon carbide, is a type of material that can be used for various industrial applications. The latter has a higher purity level and is commonly used in the abrasive industry and electrical engineering. The production of electric heating elements using silicon carbide takes advantage of its ability to conduct electricity and heat, as well as its stable properties and long lifespan.
Silicon carbide rods are resistant to acid corrosion but can react with alkaline substances at temperatures around 1300°C. They have some oxidation resistance, with the surface starting to oxidize when the temperature reaches 800°C. As the temperature continues to rise, a layer of SiO2 forms on the surface, protecting it from further oxidation and prolonging its lifespan.
However, if the rod body temperature exceeds 1600°C or more, this protective layer can break down or peel off, allowing further oxidation to occur. Therefore, it's essential to design electric furnaces and parameters for silicon carbide rods correctly to ensure their prolonged use without overheating them.
In summary, proper usage is crucial for extending the lifespan of silicon carbide rods.
