高炉风口Al-Fe共渗表面强化的研究
张金龙1，乔杰2，王晓霞3
（1.包钢西创机械制造设备公司，内蒙古 包头 014010；2. 内蒙古北方重工业集团有限公司，内蒙古 包头 014010；3.内蒙古科技大学 材料与冶金学院，内蒙古 包头 014010）
关键词：纯铜；多元共渗；表面强化；高炉风口
中图分类号：TG156.8 文献标识码：A
摘要：本文采用包埋法对纯铜表面进行铝、铁元素共渗处理，对共渗试样进行了组织分析，并对渗层硬度、氧化速度和抗磨损性能进行了测试。结果表明，渗层清晰地分为沉积层、共析层和固溶层。与纯铜相比，共渗试样的硬度和耐磨性显著提高，显微硬度提高了3~4倍，耐磨性提高了4倍，当共渗时间超过10小时后，组织粗化，硬度下降。随氧化时间的延长，共渗试样的抗氧化能力逐渐提高,氧化25小时后，抗氧化能力提高了17倍。
Studyon surface strength of blast furnace tuyere
by Al-Fepenetration
ZHANGJin-long1, QIAO Jie2, WANG Xiao-xia3, GAO Zhan-yong3
（1. Xichuang MachineryCompany Co.,Ltd., Baotou Iron and Steel (Group)Co., Baotou 014010，China; 2.InnerMongolia North Heavy Industries Group Co.,Ltd., Baotou 014010, China; 3.Materials and Metallurgy School , Inner Mongolia University of Science andTechnology, Baotou 014010, China）
KeyWords:purecopper, multi-element penetration, surface strength, blast furnace tuvere
Abstract:The pure copper was penetrated by Al-Fe elements bymeans of immersion of the samples, and the microstructures of penetration layerfrom external to internal were analyzed.The hardness of the penetration layer,oxidation rate and wear performance were measured. The results show that the penetration layer consists of depositedlayer, eutectoid layer and α solid solution. Compared with pure copper, thehardness and wear performance were improved apparently by 4 times. Microstructurecoarsening occured after 10 hours’ penetration, and hardness decreased.Theanti-oxidant performance of the penetration layer improves greatly than the purecopper, and the anti-oxidant ability of penetration samples improves continuallywith the increase of the oxidizing time. The anti-oxidant performance of thesamples was improved by 17 times after oxidizing the Al-Fe penetration layer for25 hours.