Change of inclusion characteristics during vacuum degassing of tool steel

被引：17

作者：

Steneholm, Karin

Andersson, Margareta

Jonsson, Par

机构：

[1] KTH, Div Appl Proc Met, S-10044 Stockholm, Sweden

[2] Uddeholm Tooling AB, Hagfors, Sweden

来源：

STEEL RESEARCH INTERNATIONAL | 2006年 / 77卷 / 06期

关键词：

inclusions; vacuum degassing; ladle; steel;

D O I：

10.1002/srin.200606404

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The inclusion characteristics were studied during vacuum degassing by interrupting the operation at five different times after the start of operation. Slag and steel samples were collected and thereafter assessed with respect to steel and slag composition, total oxygen content, size distribution of inclusions and chemical composition of inclusions. The main conclusion is that the number of inclusions in the different size classes as well as the total oxygen content seem to reach a minimum value after around ten minutes of vacuum degassing. Furthermore, it seems to be a consistent trend that, during vacuum degassing, the top slag influences the inclusion composition.

引用

页码：392 / 400

页数：9

共 19 条

[1] Determination of inclusion characteristics in the Asea-SKF process using the modified spark-induced DES technique as a complement in studying the influence of top slag composition [J].