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我厂为冶金部提供各种规格的铁合金电炉。颚板是电极把持器中的主要导电零件。因此要求具有高的导电、散热、抗腐蚀性能。由于纯铜难于铸造,目前各厂均采用接近纯铜的ZH96黄铜,毛重皆为200kg以上。颚板在高温下使用,是个易损件,故需要量较大;因此如何提高铸件质量,延长使用寿命,提高颚板的生产效率,降低有色金属的消耗,有重大的经济意义。目前,国内都用砂型铸造生产,铸件难以达到设计要求,废品率高达20～30％。在这种情况下我厂尝试用金属型铸造颚板。
I plant for the Metallurgical Division to provide a variety of ferroalloy furnace. Jaws are the major conductive parts in electrode holders. Therefore, the requirements of high electrical conductivity, heat dissipation, corrosion resistance. As pure copper is difficult to cast, the current plant are close to pure copper ZH96 brass, gross weight is 200kg or more. Therefore, it is of great economic significance to improve the quality of castings, prolong the service life, improve the production efficiency of jaws and reduce the consumption of non-ferrous metals. At present, the domestic production of sand casting, casting difficult to meet the design requirements, rejection rate as high as 20 to 30%. In this case, our factory try to use metal casting jaws.