杨房沟水电站座环组装焊接工艺控制

杨房沟水电站水轮机座环具有环板厚、后热温度高等特点,需要对组装焊接工艺进行重点管控以保证质量.笔者结合座环结构特点和加温焊接工艺要求,通过现场试验对座环不同焊接工艺的比较,总结出了焊接温度控制和焊接变形监控的有效措施,成功通过控制焊接变形保证了座环组装焊接质量.该经验可供其他类似工程参考借鉴.

Welding Process Control in Stay Ring Assembly of Yangfanggou Hydropower Station

The stay ring of hydraulic turbine for Yangfanggou Hydropower Station features thick ring plate and high post heating temperature,therefore it is necessary to focus on control of assembly and welding process to ensure welding quality.Considering the structural characteristics of stay ring and the requirements of heating welding process,through comparison of different welding processes of stay ring through field tests,effective measures of welding temperature control and welding deformation monitoring are summarized in this paper.With these measures,the welding quality of stay ring assembly in Yangfanggou Hydropower Station is ensured.The experience presented in this paper provides reference for similar projects.