粉末冶金工业历来在各种金属加工方法中发展速度最快,美国近三,四年来,经过经济萧条时期,粉末冶金工业以年增长率为30～40％的速度迅速发展,日本的发展速度如图1所示,说明粉末冶金与压铸、锤锻以及可锻铸铁件、灰口铸铁件相比,发展速度遥遥领先。 在粉末冶金的发展中,铁基结构零件占很大比重和有较快的发展速度。以日本为 Powder metallurgy industry has always been the fastest growing in all kinds of metal processing methods, the United States nearly three or four years, after the economic depression period, the powder metallurgy industry to the annual growth rate of 30 to 40% of the rapid development of Japan’s pace of development such as Figure 1 shows that the powder metallurgy and die-casting, forging and malleable iron, gray cast iron compared to the pace of development ahead. In the development of powder metallurgy, iron-based structural components account for a large proportion and a faster pace of development. To Japan as