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1 前言 锅炉锅筒相当于一个大型厚壁压力容器。它在锅炉上的重要作用,使其制造工艺在锅炉生产中成为关键。而亚临界参数大型火电设备300MW和600MW锅炉特厚壁锅筒(简称汽包)的制造更引起了大型电站锅炉制造厂的关切。目前工业发达国家的发电机组最高已达到
1 Introduction Boiler drum equivalent to a large thick-walled pressure vessel. Its important role on the boiler makes its manufacturing process the key to boiler production. The subcritical parameters of large-scale thermal power equipment 300MW and 600MW boiler thick-walled drum (referred to as the drum) manufacturing caused more concern for large power plant boiler manufacturers. At present, the highest generating units in industrialized countries have been reached