|
Vol.15, No.3, 246 ~ 254, 1977
|
| Title |
| Study on the Deoxidation of Stainless Steel in melting (2) ( The Deoxidation of Stainless steel with silicon in Melting ) |
| 김영삼 , 성장현 , 이종문 , 황용길 Y . S . Kim , J . H . Sung , J . M . Lee , Y . K . Whang |
|
|
|
| Abstract |
| The phenomenon of decreasing chromium content, the effect of deoxidation by adding silicon and the floating mechamism of slags, the crystal structre of inclusions for 18Cr-8Ni and 17Cr stainless steel respectively have been investigated. The scraps are melted by a high frequency induction furnace. The results are as follows; (1) The chromium content in 17Cr stainless steel exhibits a remarkable decrease more than 1 hr. is required for melting the scrap. The chromium content in 18 Cr-8 Ni stainless steel exhibits a small decrease, as 1.67% until holding for 2 hrs. The required melting time is 1 hr. 2) The floating rate of spheroidal inclusions is greater than the floating rate of dispersed inclusions from molten bath. 3) The slags of 17 Cr stainless steel before deoxidation and after deoxidation by adding silicon are FeO·Cr₂O₃and SiO₂, the slag of 18 Cr-8 Ni stainless steel is FeO·Cr₂O₃, which can be seen by X-ray diffraction. 4) The inclusions in 18Cr-8Ni and 17Cr stainless steel (containing less than 0.8% Si and less than 1.0% Mn, as cast) are Cr₂O₃and Fe₃O₄ as can be seen by X-ray diffraction. |
|
|
| Key Words |
|
|
 |
|
