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| ON THE SHORTENING OF REDUCING PERIOD IN THE ELECTRIC FURNACE SMELTING |
| FANG BING;SUENG I-KWANG;HOO CHWANG-CHI;HO CHEIN-CHU;LIU CHENG-CHI;WANG CHING-TANG AND HSING CHUNG-SHU Institute of Metal Research;Academia Sinica |
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Cite this article:
FANG BING;SUENG I-KWANG;HOO CHWANG-CHI;HO CHEIN-CHU;LIU CHENG-CHI;WANG CHING-TANG AND HSING CHUNG-SHU Institute of Metal Research;Academia Sinica. ON THE SHORTENING OF REDUCING PERIOD IN THE ELECTRIC FURNACE SMELTING. Acta Metall Sin, 1956, 1(4): 311-324.
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Abstract Experiments were carried out with the purpose of shortening the reducingperiod in small basic electric furnace for carbon steels of various carbon content.In some of the experimental heats reducing period was shortened by 20 mi-nutes and the others were made according to the normal procedure of the works.For some of the low carbon steel heats,the amount of ferro-silicon powder wasincreased by 20% and added in advance.The results,obtained from heats of shorterreducing period,show that the deoxidation and desulphurization appear to be ascomplete as that of a normal heat,the content of nitrogen and non-metallic in-clusions being much less.In addition,the results on mechanical properties showthat in the case of medium carbon steel,the impact value is higher,and in thecase of low carbon steel the percentage of elongation and the rate of reductionof area are also slightly superior although the yield strength becomes somewhatlower.Such a shortening of reducing period also results in a 7% increase ofthe rate of production.It is suggested that in electric steel smelting process theappropriate deoxidation procedure and the length of reducing period should varyin accordance with different carbon content of the steel.A relationship of[S]/[O]=1.2—2.2 at the end of reducing period was ob-served,and the possibility of further shortening of the reducing period in makingmedium and high carbon steel was also pointed out.
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Received: 18 April 1956
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[1] 方柄、王景唐、胡壮麒、刘成器、邢中枢,电炉吹氧冶炼的熔池反应,金属学报,1(1956) ,3,246-248．
[2] 同文献[1] ,251．
[3] 电炉氧气炼钢试验报告(一),中国科学院金属研究所内部资料,1955年,14页,图7．
[4] 电炉氧气炼钢试验报告(二),中国科学院金属研究所内部资料,1955年,21页,图16、 17．
[5] 电炉氧气炼钢试验报告(三),中国科学院金属研究所内部资料,1955年,4-10页,图1、 3、 4、 6．
[6] 电炉氧气炼钢试验报告(四),中国科学院金属研究所内部资料,1955年,图1、 3、 5、 6-9、 11、 12．
[7] 李薰、陈文绣、杨维琛、张永刚、张子青,冶炼过程中钢液含氢的变化,1954年金属研究工作报告会会刊,第67页.
[8] 同文献[1] ,243．
[9] #12
[10] Fischer,W.A.,Cohnen,T.,Der Einfluss des Kohlenstoffgehaltes auf die Entschwefelung von Eisenschlmelzen durch einen Kalk-Flussspat-Tiegel im Hochfrequenzofen,Arch.Eisenhüttenwesen,21(1950) ,355．
[11] Fischer,W.A.,Engelbrecht,H.,Die gleichzeitige Entschwefelung and Desoxydation von Stahlschmelzen,Stahl und Eisen,1955,2,70．
[12] #12 |
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