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球墨铸铁件的型内球化法是由英国的Matorials & Methods公司在六十年代后期发明的,1973年由美国的Pickands Mather公司引入美国。由于这种方法与传统的浇包球化法相比工艺大大简化,合金含量、温度与发射污染更容易控制,而且生产成本低,因而迅速推广应用。美国1980年球墨铸铁件产量约210万美吨,其中50～60％是用型内球化法生产的。
The nodular cast iron ductile method was invented by Matorials & Methods in the United Kingdom in the late 1960s and introduced to the United States by Pickands Mather in the United States in 1973. Because this method greatly simplifies the process compared with the traditional ladle spheroidization method, the alloy content, temperature and emission pollution are easier to control, and the production cost is low, which is rapidly popularized and applied. The output of ductile iron in the United States in 1980 was about 2.1 million U.S. tons, of which 50-60% were produced by the internal balling method.