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由于要求质量更加稳定,性能更为划一,而提高了球墨铸铁热处理的重要性。在这篇文章中,提出了如何解决问题的一些想法。球墨铸铁的应用范围在最近几年中已有相当的变化,对于这种材料的要求亦是如此。这些要求是,始终如一的机械生能——特别是硬度,并要保证铸件没有碳化物和白口。除了石墨形状和化学成份之外,这两个特性是铸件得到规定性能的主要先决条件,也是机械加工的需要。在生产线上或数控机床上,对大量零件的机械加工需要有均匀的硬度,并
Due to the requirement of more stable quality and more uniform performance, the importance of heat treatment of ductile iron has been enhanced. In this article, some ideas on how to solve the problem are presented. The application of ductile iron has changed considerably in recent years, as is the requirement for this material. These requirements are consistent with mechanical hygiene - especially hardness, and make sure the castings are free of carbides and whites. In addition to the graphite shape and chemical composition, these two properties are the main preconditions for achieving the specified properties of the castings and also for machining. On the production line or CNC machine tools, the machining of a large number of parts requires a uniform hardness and