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使用耐热防蚀涂层是电弧炉熔炼金属时,节约石墨电极的一个有发展前途的方法。在电极侧表面喷涂多层含铝量高(>75％)的易熔涂层的做法,得到普遍推广。此种涂层的内层是利用压缩空气喷涂的熔融铝,喷涂后进行短时间的电弧处理。保护层的使用效果取决于一系列因素,其中最重要的是与涂层材料的结合强度。本文要探讨的问题是,铝涂层在喷涂及电弧处理时与石墨敷底层结合的结构与机理。用ЭТОА号电极石墨作敷底层。铝层是利用线绕的电弧金属喷枪喷涂,操作参数为:敷底层t=100℃;喷涂距离120毫米;喷铝层厚度0.12毫米。冷却到室温后,喷铝层在1350、1500、
The use of heat-resistant corrosion-resistant coating is a promising method for saving graphite electrodes when smelting metal with an electric arc furnace. The widespread application of multiple layers of fusible coatings containing a high amount of aluminum (> 75%) on the side surfaces of the electrodes is widespread. The inner layer of this coating is the use of compressed air spray molten aluminum, spraying short arc treatment. The effectiveness of the protective layer depends on a number of factors, the most important being the bond strength to the coating material. The problem to be addressed in this article is the structure and mechanism of the aluminum coating combined with the graphite backing layer during spraying and arc treatment. Use ЭТОА electrode graphite as the underlying layer. Aluminum layer is the use of wire wound arc metal spray gun, the operating parameters: the underlying t = 100 ℃; spray distance 120 mm; aluminum spray layer thickness of 0.12 mm. After cooling to room temperature, aluminum sprayed layer at 1350, 1500,