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长河坝水电站是国家西部大开发标志工程,建成后对带动西部经济发展发挥了极大促进作用。长河坝水电站安装4台65万千瓦混流式水轮发电机组,总装机容量260万千瓦,单独运行年均发电量108.3亿千瓦·时,联合运行年均发电量111亿千瓦·时。其中净重160t马氏体不锈钢转轮是水轮发电机组制造过程中最重要的部件之一。转轮焊接过程中,要求焊缝预热
The Changheba Hydropower Station is a landmark project for the development of the western part of the country. Upon completion, the Changheba hydropower station has played a significant role in boosting the economic development in the western region. Changheba Hydropower Station installed 4 sets of 650,000 kilowatts Francis turbine units with a total installed capacity of 2.6 million kilowatts, operating alone with an average annual generating capacity of 10.83 billion kilowatts · hour, the combined operation of the average annual generating capacity of 11.1 billion kilowatt hours. One of the net weight of 160t martensitic stainless steel wheel turbine generator manufacturing process is one of the most important components. Runner welding process, requiring preheating of the weld