炉渣和钢液反应90 min 后,钢中主要生成低熔点钙镁铝硅酸盐夹杂,该夹杂大部分上浮去除,留在钢中的为球形夹杂,有利于提高钢材的 抗疲劳性能。当炉渣碱度约为9时,有利于生成钙镁铝硅酸盐夹杂。
Abstract
Ingredient and morphology of structure of inclusions in liquid alloy steel (0. 42C
1. 14Cr
0. 23Mo) under high basicity slag 43 -47CaO - 5 - 10SiO
2
- 46 -54A1
2
0
3
have been studied by silicon molybdenum electric resistance furnace with MgO crucible. It was obtained that after reaction with high basicity high A1
2
O
3
slag for 90 min
most of inclusions formed in liquid steel were calcium-magnesium-aluminum silicate inclusions which were easily removed from liquid steel
and the inclusions remained in steel were global particles being available to improve the fatigue resistance of steel products. It was available to fonn calcium-magnesium-aluminum silicate inclusions as the basicity of slag was 9.