论文部分内容阅读
我国铁基粉末冶金工业得到了很大发展,并已取得显著的经济效益。但是目前铁基粉末冶金制品的强度还不高,并且韧性较差,因而使其应用受到很大的限制,这是急待解决的一个技术关键问题。 为了进一步提高我国铁基粉末冶金结构材料和制品的强度及韧性,节约有色金属铜,降低成本,逐步建立适合我国资源情况的铁基材料系列,不断扩大铁基材料和制品的应用范围。自1978年以来,在机械工业部的大力支持下,由北京钢铁学院负责,先后与北京粉末冶金四厂等单位协作,共同开展了中强度含磷铁基粉末冶金结构材料及制品的试验研究。 鉴于磷是我国的富产元素,价格便宜,并且磷又是强韧化效果很好的元素,故研究采取了铁磷合金化的方案。为了有利于推广应用,采取了混料→压制→烧结和混料→压制→烧结→热处理两种简便工艺。
China’s iron-based powder metallurgy industry has been greatly developed, and has achieved significant economic benefits. However, the current strength of iron-based powder metallurgy products is not high, and the toughness is poor, so its application is greatly restricted, which is an urgent technical solution to a key issue. In order to further enhance the strength and toughness of iron-based powder metallurgy structural materials and products in our country, save non-ferrous copper, reduce costs and gradually establish a series of iron-based materials suitable for our country’s resources, expanding the application range of iron-based materials and products. Since 1978, with the strong support of the Ministry of Machinery Industry, the Beijing Iron and Steel Institute is responsible for, and has worked with the Beijing No.4 Powder Metallurgy Plant and other units to jointly carry out the experimental study of medium-strength phosphorus-based iron-based powder metallurgy structural materials and products. In view of phosphorus is a rich element of our country, cheap, and phosphorus is a good element of toughening effect, so the study adopted a Fe-P alloying program. In order to promote the promotion and application, we have taken two kinds of simple processes: mixing → pressing → sintering and mixing → pressing → sintering → heat treatment.