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铁道部铜陵机车工厂有一台经整修后恢复使用的3t电弧炉。原设计电极夹持器是由紫铜整体铸造而成,循环水腔由铸造在夹持器内的成形钢管构成。这种结构夹持器除需大量的紫铜材料,循环水腔的流通面积也小,冷却效果差,造成夹持器烧损严重,使用寿命短。从降低夹持器造价和增大循环水流量提高冷却效果入手,将其改成用ZG230-450整体铸造而成,
Ministry of Railways Tongling locomotive factory has a restored 3t electric furnace after renovation. The original design of the electrode holder is made of copper casting as a whole, the circulating water chamber by the casting in the holder of the formed steel pipe composition. In addition to a large amount of copper holder, the circulation area of the circulating water chamber is also small and the cooling effect is poor, resulting in severe burning of the holder and short service life. Starting from reducing the cost of the holder and increasing the circulating water flow to improve the cooling effect, it will be changed into the overall cast with ZG230-450,