国产铁粉质量与国际先进水平相差较大。这种情况限制了铁粉的应用范围,影响了铁基粉末冶金制品的发展。本文以《铁粉二次还原工艺》一文和为期三年的生产实践为基础,对铁粉二次还原工艺中的有关工序进行论述。表明:用二次还原工艺严格处理的一次还原铁粉,其质量大幅度提高,应用范围进一步扩大,因而促进了铁基粉末冶金制品的发展并获得较佳的经济效益。 Domestic iron powder quality and the international advanced level difference. This situation limits the scope of application of iron powder, affecting the development of iron-based powder metallurgy products. In this paper, “iron secondary reduction process,” a paper and a three-year production practice as the basis, the secondary reduction process of iron powder in the relevant processes are discussed. The results show that the quality of primary reduced iron treated strictly by the secondary reduction process is greatly improved and its application range further expanded, thus promoting the development of iron-based powder metallurgy products and obtaining better economic benefits.