球墨铸铁的型内球化处理法(InmoldProcess)是英国的Materials and Methods公司于1960年代末期发明,并获得了专利权(美国专利号3703922,1972年11月;4004630,1977年1月)。此后,很快就引起了各国铸造界的极大关注。近年来,在欧美国家的应用和发展已是日新月异,不少厂家业已正式采用此法生产球墨铸铁件。有人评价:自从球墨铸铁问世以来,型内法可能是铸铁生产工艺上的最大进步。一、型内法的工艺特点普通的球墨铸铁球化处理方法(如压力加镁法、喷入法、冲入法等)大都是在铸型之外 The Inmold Process for ductile iron was invented and patented by the British Materials and Methods Company in the late 1960s (U.S. Patent No. 3,703,922; November 1972; 4004630; January 1977). Since then, a great deal of attention has been drawn to the foundry community in various countries. In recent years, the application and development in Europe and the United States has been changing rapidly, many manufacturers have formally adopted this method of producing ductile iron. It is commented: Since the advent of ductile iron, in-law may be the greatest progress in the production of cast iron. First, the technical characteristics of the type of law Ordinary ductile iron ball treatment methods (such as pressure plus magnesium method, injection method, into the law, etc.) are mostly outside the mold