Key Elements of Sulfide Modification in the Sulfur-based Free-cutting Steel

DOI

10.2991/isaeece-17.2017.36How to use a DOI?

Keywords

the sulfur-based free-cutting steel; machinability; MnS; complex inclusions

Abstract

Sulfides are beneficial inclusion in free-cutting steel, and can cause chips to break easily as an internal source of stress concentration when cutting steel, and also lubricate the tool and workpiece, thus reducing tool wear and improving machinability. Sulfide morphology directly determines the performance of the free-cutting steel, and it is possible to improve the machinability of the free-cutting steel by changing the MnS inclusions into small, dispersive, spherical or spindle-shaped inclusions, thus making them difficult to deform. In aluminum-killed steel treated with Ca or Mg, there are numerous small and dispersive complex inclusions with an oxide core (CaO-Al2O3 or MgO-Al2O3) and a sulfide surface layer ((Mn,Ca)S or (Mn,Mg)S). Mg can form simple oxides like MgO, MgS or Mg-O-S. Mg can also form complex inclusions with an oxide core (MgO) and sulfide surface layer (MnS or Mn-Mg-S).

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xu Li
AU  - Zongze Huang
AU  - Jinmin An
AU  - Yanxin Wu
AU  - Jie Xu
AU  - Jianxun Fu
PY  - 2017/03
DA  - 2017/03
TI  - Key Elements of Sulfide Modification in the Sulfur-based Free-cutting Steel
BT  - Proceedings of the 2017 2nd International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 2017)
PB  - Atlantis Press
SP  - 196
EP  - 200
SN  - 2352-5401
UR  - https://doi.org/10.2991/isaeece-17.2017.36
DO  - 10.2991/isaeece-17.2017.36
ID  - Li2017/03
ER  -