槽形引锭头的失效形式主要表现为槽形工作面的热疲劳龟裂和热冲蚀豁口。研究槽形引锭头的工况、材质 ,应用新型堆焊修复工艺 ,设计槽形模板 ,无需大型加工设备 ,以极低的成本修复报废的引锭头 ,并赋予其优良的耐热、抗热疲劳性能 The failure form of trough-shaped starter head is mainly manifested as thermal fatigue crack and thermal erosion notch of trough working face. Studying the condition and material of the grooved starter head, the new surfacing repair technology is applied to design the grooved template without the need of large-scale processing equipment to repair the scrapped starter head with a very low cost and to give it excellent heat resistance, Thermal fatigue properties