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大型转子锻件的主要冶金问题,与制造锻件钢锭的最大尺寸和质量有关。目前,钢厂由于受起重设备所限,能生产的最大锻件约200～240吨,需钢锭重约350～500吨,这么大的重量,只有几个钢厂的吊车能起吊。因而,火电站机组的级别以及进一步利用经济指标的能力,受到了所能生产的转子锻件最大尺寸的限制。质量问题虽说关系不大,但有一定的可能性使运行中的转子爆炸,造成电站灾难性的破坏,危及生命,以及财产的巨大损失。从1950年到1977年,全世界电站有三十根转子爆炸。鉴于大多数电厂仍在运转,爆炸的转子可以认为是相当少的,但其后果是严重的,因而应力图使其减至极少。
The major metallurgical issues for large rotor forgings are related to the maximum size and quality of ingot forgings. At present, the steel mills, limited by the lifting equipment, can produce about 200 to 240 tons of the largest forgings and about 350 to 500 tons of steel slabs. With such a large weight, only a few cranes can lift the cranes. Thus, the level of thermal power plant units and the ability to further utilize economic indicators are limited by the maximum size of rotor forgings that can be produced. Although the quality problem is of little relevance, there is a certain possibility that the rotor in operation will explode, causing catastrophic damage to the power station, endangering life and huge losses of property. From 1950 to 1977, thirty rotors exploded in power plants around the world. Given that most power plants are still operating, the exploding rotor can be considered rather small, but its consequences are severe and stress should be minimized.