Affiliation:
1. Xi’an University of Architecture and Technology
Abstract
In order to control the plasticity of CaO-SiO2-Al2O3system inclusions so as to reduce the harm to the quality of 42CrMoA crankshaft steel, the target controlling ranges of CaO-SiO2-Al2O3inclusions is put forward. On the basis, influence of CaO-SiO2-Al2O3and CaO-SiO2-Al2O3-MgO system top slag on the content of calcium and aluminum in molten steel is contrasted. Theoretical research results show that, calcium activity should be controlled in the range of (90~3300)×10-10, oxygen activity should be below 7×10-6, the mass percent of calcium should be controlled more than 75ppm. And CaO-SiO2-Al2O3-MgO should be a good choice to obtain the plastic inclusions of CaO-SiO2-Al2O3.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science