粉末冶金技术2024，Vol.42Issue(2)：144-152,9.DOI:10.19591/j.cnki.cn11-1974/tf.2023070006
EIGA和PREP制备M62轴承钢粉末
Preparation of M62 bearing steel powders by EIGA and PREP
祁进坤 1岳永文 1胡剑 1王树立 1赵钢 1寇晓磊 1齐国强 1赵京辉 2任淑彬2
作者信息
- 1. 河北五维航电科技股份有限公司,张家口 100081
- 2. 北京科技大学新材料技术研究院,北京 100083
- 折叠
摘要
Abstract
High-purity bearing steel powders were prepared by electrode induction melting gas atomization(EIGA)and plasma rotating electrode atomization(PREP),respectively.The particle size distribution,nitrogen and oxygen content,and microstructure of the two high-purity bearing steel powders were analyzed and compared by laser particle size analyzer,oxygen nitrogen analyzer,and scanning electron microscope.The results show that both of the powders are mainly spherical with the PREP powders(M62-PREP)having the higher sphericity,while the EIGA powders(M62-EIGA)has the higher proportion of satellite powders and irregular powders.The median particle size(D50)of the M62-PREP powders is 108.11 μm,significantly higher than that of M62-EIGA powders(D50=38.68 μm).The composition of the two powders is evenly distributed,there is no obvious element segregation,and the M62-EIGA powders are finer.Both of the powders have the good flowability.The N content(mass fraction)of the pre-alloy electrode rods,M62-PREP powders,and M62-EIGA powders are 0.0070%,0.0072%,and 0.0068%,respectively.The content of N element does not change much.The O content(mass fraction)of M62-PREP powders increases from 0.0008%of the pre-alloy electrode rods to 0.0035%,while the O content of M62-EIGA powders increases to 0.0089%,indicating the significant increase in the O content.The M62-EIGA powder bearing steels after hot isostatic pressing and sintering have the more oxygen containing inclusions,and the M62-PREP powder bearing steels should have the better performance.关键词
电极感应熔炼/等离子旋转电极/轴承钢/高纯度粉末/夹杂物Key words
electrode induction melting/plasma rotating electrode/bearing steels/high-purity powders/inclusions分类
矿业与冶金引用本文复制引用
祁进坤,岳永文,胡剑,王树立,赵钢,寇晓磊,齐国强,赵京辉,任淑彬..EIGA和PREP制备M62轴承钢粉末[J].粉末冶金技术,2024,42(2):144-152,9.
