Dodd 先生在他的讲演中指出,在当前另部件先进的设计和能源的利用两者都要求铸件更轻更强韧和更实用的情况下,铸铁技术的某些领域能改善工业的竞争性。由于采用早已建立而未充分应用的技术能在很大的程度上改进热处理合金灰口铸铁的基体性能并因而保持现有的销路,同时也使经过相同处理的球墨铸铁进入广阔的市场。对于发动机机体,液压传动部件以及相似的要求可加工性和稳定性的部件,不能用球墨 In his speech, Mr. Dodd pointed out that in the light of the current advanced design of other components and the use of energy that require lighter, tougher and more practical castings, some areas of cast iron technology can improve industrial competitiveness. Thanks to the already established and underused technology, the basic properties of the heat-treated alloy gray cast iron can be greatly improved and the existing sales are maintained. At the same time, the same treated ductile iron can be introduced into the vast market. For engine blocks, hydraulically driven components, and similar components that require workability and stability, do not use nodular ink