摘要
本文研究了坡口表面的含铝涂层对铸铁焊缝及熔合区的石墨化作用。介绍了在此基础上研制成功的能降低焊缝硬度,消除半熔化区白口从而提高其抗裂性的一种强石墨化涂料。
This paper investigates the graphitizing effect of Al-alloyed coating on the surface of the grooves on the gray iron weld and bond metal. Based on it, a powerful graphitized coating flux is developed, capable of reducing weld hardness and eliminating white iron of the partial melting region so as to enhance its crack resistance.
关键词
涂料
石墨化
灰口铸铁
冷焊
heat input
white iron microstructure
bond
coating
graphitization
