整体转子锻件超声探伤中的密集缺陷王纪根１概述在转子锻件超声探伤中，通常出现的是单个分散的缺陷。与此相对应的另一类则为密集缺陷。缺陷的类型与炼钢方法有关。早期生产转子锻件用钢，采用破性电炉（也有用平炉的）冶炼，在大气条件下铸锭。由此种钢锭生产的锻件，出... Intensive Defects in Ultrasonic Testing of Rotor Forgings Wang Jijin 1 General In the ultrasonic flaw detection of rotor forgings, there usually appears single dispersed defects. The other one corresponds to a dense defect. The type of defect is related to the steelmaking method. Early production of rotor forgings steel, broken electric furnace (also useful flat furnace) smelting, ingot ingot in the atmosphere. Forgings produced from such ingots, out ...