摘要
分析了硫合金化工艺和渣系等因素对GS35C-A钢(/%:0.32~0.39C,≤0.40Si,0.50~0.80Mn,≤0.045P,0.015~0.055S,≥0.020Al)浇铸性能的影响,并将原LF(硫合金化)-RH-钙处理工艺优化成LF-RH-钙处理-硫合金化工艺。结果表明,(1)采用先硫合金化后钙处理工艺生产时,水口结瘤物以CaS、CaO-Al_2O_3-CaS复合夹杂物为主;(2)采用先钙处理后硫合金化工艺生产时,连浇炉数由原来先硫合金化后钙处理工艺的2炉提高至6炉;(3)渣系优化后(R 5.66~9.55),RH喂硫线前显微夹杂物数量比优化前降低了84%,RH离站显微夹杂物数量由9.09个/mm^2降低至5.06个/mm^2。
Effect of factors including sulfur alloying process and slag series on casting performance of steel GS35C-A （/%：0.32-0.39C,≤0.40Si,0.50～0.80Mn,≤0.045P,0.015-0.055S,〉0.020A1）has been analyzed, and the original LF （sulfur alloying）-RH-calcium treatment process is modified to optimized LF-RH-calcium treatment-sulfur allo- ying process. Results show that with using calcium treatment after sulfur alloying process, in casting the main nozzle bloc- king materials are CaS and CaO-A12 O3-CaS complex inclusions ; as using sulfur alloying after calcium treatment process the number of continuous-continuous casting heats increases from original 2 heats by using calcium treatment after sulfur allo- ying process to 6 heats; and with using optimized slag series （ R 5.66 - 9. 55 ）, before RH feeding sulfur wire the number of micro-inclusions in steel decreases by 84% as compared with original process, and the number of micro-inclusions at end RH decreases from 9. 09 inclusions/ram2 to 5.06 inclusions/mm2.
作者
姬旦旦
李富伟
李智
王秋坤
刘会杰
Ji Dandan Li Fuwei Li Zhi Wang Qiukun Liu Huijie(Steelmaking Works, Xingtai Iron and Steel Co Ltd, Xingtai 05200)
出处
《特殊钢》
北大核心
2017年第4期43-45,共3页
Special Steel
关键词
含硫非调质钢GS35C—A
水口结瘤
钙处理
硫化钙
Non-Quenched-Tempered steel GS35C-A Bearing Sulfur, Nozzle Blocking, Calcium Treatment,Calcium Sulfide
