炼钢厂的钢锭模在使用后,其内壁不可避免地要产生裂纹、凹坑、剥落等缺陷。过去国内对钢锭模的修复是采用铸铁焊条进行堆焊。用这种方法,堆焊性能差,工艺要求高,效率也低,因此很难大面积推广。冶金部建筑研究总院最近研制成功了钢锭模堆焊专用的YDZ—258铁基交流自保护药芯焊丝。 Steel ingot mold steel plant in use, the inevitable wall to produce cracks, pits, flaking and other defects. Past the domestic steel ingot mold repair is the use of cast iron welding electrodes. In this way, poor welding performance, high process requirements, low efficiency, it is difficult to promote large-scale. Building Research Institute of the Ministry of Metallurgical recently successfully developed a steel ingot die-surfacing YDZ-258 iron-based AC self-shielded flux cored wire.