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电极埋入式盐浴炉是现阶段普遍采用的盐浴炉型。但是,此种炉子,尤其是三相炉还存在着两个比较大的问题,在一定程度上影响了它的使用:①三相电流不平衡;②电极间电流分布不均匀,端头电流密度大,以致使电极端头过早烧损而降低炉子寿命。本工作做了如下改进:①将炉膛由方形改成圆形,使三相电流获得了近于100％的理想的平衡;圆形炉膛还有一系列优点。②通过模拟试验,求得了电极间距与电流密度的几近线性的关系。于是将等高状电极改成导电面投影为截头菱形状电极,达到电极间电流均匀分布的目的,从而避免电极端头烧损。 炉子经过一段时间的使用,证明基本达到设计要求,只是电极寿命尚须时间的考验。
Electrode buried salt bath furnace salt bath furnace is commonly used at this stage. However, this kind of furnace, especially the three-phase furnace, still has two relatively large problems, to some extent, affecting its use: ① three-phase current imbalance; ② current uneven distribution of electrodes, tip current density Large, so that the tip of the electrode premature burning and reduce furnace life. The work made the following improvements: ① the furnace from the square into a circle, the three-phase current obtained nearly 100% of the ideal balance; round hearth there are a series of advantages. ② Through the simulation test, the relationship between the electrode spacing and the current density is almost linear. So the contour electrode into the conductive surface projection of the truncated diamond-shaped electrode, to achieve the purpose of uniform distribution of current between the electrodes, so as to avoid the electrode tip burnout. After a period of time the use of the furnace, that basically meet the design requirements, but the electrode life is subject to the test of time.