This study shows some variations on the deoxidation behavior of products formed by adding Al, Si and Mn element in 28Cr-13Ni heat resiting steel. The favorable condition for the decrease in inclusion content has been found to be obtained when six minu...
This study shows some variations on the deoxidation behavior of products formed by adding Al, Si and Mn element in 28Cr-13Ni heat resiting steel. The favorable condition for the decrease in inclusion content has been found to be obtained when six minutes or more measured after adding the Al-Si-Mn deoxidizer into the melt have elapsed. The crystal structure of the slags and the inclusions extracted by Br-Methanol solution has been found to be amorphous. However, when the inclusions extracted by Br-Methanol solution are heated for 20 minutes at 800℃, the crystal substance of α-Fe₂O₃ can be obtained.