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电炉15T钢包喷吹稀土硅钙混合粉剂获得明显的冶金效果:脱氧率达35%,脱硫率为60%,喷后[S]为0.002～0.005%,稀土的有效利用率为60%。经喷吹后钢中夹杂物数量明显减少,分布(氵弥)散,形态全部球化。16MnRE喷粉钢热轧12mm板材,其综合机械性能得到改善,特别是冲击韧性成倍提高:横向V型冲击值ak(常温)>14kg·M/cm~2,ak(0℃)=10kg·M/cm~2,ak(-20℃)=6kg·M/cm~2,ak(-40℃)=3kg·M/Cm~2,且纵横向性能接近。
The metallurgical effect of 15T ladle blast furnace rare earth calcium-calcium mixed powder was obtained by electric furnace. The deoxidation rate was 35%, the desulfurization rate was 60%, the spray [S] was 0.002 ~ 0.005% and the effective utilization of rare earth was 60%. After injection, the amount of inclusions in steel significantly reduced, distribution (Mi Mi) scattered, the shape of all the ball. 16MnRE powder metallurgy hot rolled 12mm plate, its overall mechanical properties are improved, especially the impact toughness increased exponentially: transverse V-impact value ak (room temperature)> 14kg · M / cm ~ 2, ak (0 ℃) = 10kg · Cm 2, ak -20 ° C = 6 kg · M / cm 2, ak -40 ° C = 3 kg · M / cm 2, and the vertical and horizontal performances were close to each other.