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1. 发明专利

JPS599119A Manufacture of low carbon steel 失效
标题翻译：低碳钢的制造
公开(公告)号：JPS599119A
公开(公告)日：1984-01-18
申请号：JP11818782
申请日：1982-07-06
申请人： Sumitomo Metal Ind Ltd
发明人： HIRATA TAKEYUKI , YAMAZAKI ISAO , AOKI NOBUHIDE
IPC分类号： C21C1/04 , C21C5/32 , C21C5/35
CPC分类号： C21C5/32
摘要： PURPOSE:To obtain a low C steel which is not obtd. by the conventional LD method by combining a method for treating desiliconized molten iron together with an Mn source by blowing in a converter with a composite blowing method. CONSTITUTION:Pig iron and secondary starting materials including an Mn source are charged into a converter where top O2 blowing and bottom gas blowing can be carried out, and a low C steel is manufactured by composite blowing. In this method, in order to improve the Mn yield, the molten iron is desiliconized to
摘要翻译：目的：获得低碳钢。通过常规的LD方法，通过将复合吹塑法吹入转炉中将脱硅铁一起处理的方法与Mn源组合。构成：将含有Mn源的生铁和二次起始材料装入能够进行顶部吹氧和底吹气的转炉中，通过复合吹制制造低C钢。在该方法中，为了提高Mn产率，将铁水脱硅为≤0.35％的Si浓度。在将铁充入转换器之前。铁 - 锰矿石可以在转炉中的铁水和/或钢水从转炉排出之后，可以将复合吹制后的钢料进行脱气，以减少在钢铁过程中或之后装入的钢铁量从转换器放电。

2. 发明专利

JPS58181817A Manufacture of low-phosphorus al-killed steel 失效
标题翻译：低磷杀死钢的制造
公开(公告)号：JPS58181817A
公开(公告)日：1983-10-24
申请号：JP6448282
申请日：1982-04-16
申请人： Sumitomo Metal Ind Ltd
发明人： AOKI NOBUHIDE , YAMAZAKI ISAO , HIRATA TAKEYUKI , OOKITA YOSHIMICHI
IPC分类号： C21C7/00 , C21C7/06
CPC分类号： C21C7/06
摘要： PURPOSE:To extremely efficiently manufacture high-grade low-phosphorus Al-killed steel, by smelting pig iron melt together with necessary adjutant raw materials into a state having low C content with upper-blown oxygen and bottom-blown gas, vacuum degasifying the formed steel to deoxidize and decarburize it, adding Al to it, and then continuously casting it. CONSTITUTION:Pig iron melt tgether with necessary adjutant raw materials is bottom- blown with gas during and/or after being refined with upper-blown O2 in the converter furnace which enables the upper blowing of O2 and the bottom blowing of gas to make steel of [C] below 0.07%, and the resulting steel melt is tapped under an undeoxidized condition. The undeoxidized tapped steel melt is then treated in a vacuum degasifier to perform decarburization, deoxidation and the adjustment of necessary components. From the time when [C] comes close to an objective value with the progress of the decarburizing reaction of C+O CO in the vacuum degasifier, Al is added in installments to reduce [O] down to about 0.002-0.005%. Thereafter, the steel melt after being treated in this way is formed into a cast piece of predetermined size by a continuous casting process. The formation of Al2O3 clusters is little in this continuous cast piece, and said cast piece is a low-phosphorus Al-killed one extremely excellent in quality as compared with a conventional Al-killed cast steel piece.
摘要翻译：目的：为了极高效地制造高品位低磷铝杀死钢，通过将生铁与必要的副原料一起熔炼成具有较低C含量的上吹氧气和底吹气体的状态，真空脱气形成钢对其进行脱氧和脱碳，向其中加入Al，然后连续铸造。构成：在转炉炉内用上吹的O2进行精炼期间和/或之后，与必要的副原料一起生产的铁水熔化，使得上吹O2和气体的底吹使钢 [℃]低于0.07％，所得钢熔体在未脱氧条件下攻丝。然后在真空脱气器中处理未脱氧的螺纹钢熔体，以进行脱碳，脱氧和必要组分的调整。随着C + O CO在真空脱气装置中脱碳反应的进行，[C]接近目标值时，分批加入Al，将[O]还原为约0.002〜0.005％。此后，以这种方式处理后的钢熔体通过连续铸造工艺形成预定尺寸的铸件。在该连续铸件中，Al 2 O 3簇的形成很少，并且所述铸件是与常规Al-杀死的铸钢件相比质量极好的低磷Al杀死的一种。

3. 发明专利

JPS59147745A Treatment of molten metal 失效
标题翻译：金属处理
公开(公告)号：JPS59147745A
公开(公告)日：1984-08-24
申请号：JP2079683
申请日：1983-02-10
申请人： Sumitomo Metal Ind Ltd
发明人： HIROKI NOBUYOSHI , YAMAZAKI ISAO , TOZAKI YASUYUKI , MORI TOSHIHIRO
IPC分类号： C21C7/072 , B22D1/00
CPC分类号： B22D1/00
摘要： PURPOSE:To prevent a molten metal from absorbing nitrogen in air and splashing to the outside of a ladle in the stage of blowing a flux into the molten metal in the ladle and performing refining such as desulfurization by sealing hermetically the ladle with a cover body having a specific shape and refining the molten metal by desulfurization. CONSTITUTION:A molten metal 4 such as molten iron, molten steel or the like is put into a ladle 2, and a lance is immersed therein to blow a flux into the molten metal, then the molten metal is subjected to preliminary refining such as desulfurization. A cover body 1 for preventing splashing provided with a collar 9 and a segmenting leg 10 is placed on the ladle 2 and a lance is inserted through the upper hole 8 of the body 1 to perform refining such as desulfurization. The immersing depth (d) of the leg 10 of the body 1 into the metal 4 is made >=50cm, and the area S2 in the outside part of the segmenting leg is so determined as to attain
摘要翻译：目的：为了防止熔融金属吸入空气中的氮气，并在将熔剂吹入钢包中的熔融金属的阶段中溅射到钢包的外部，并通过密封地密封钢包进行精炼，例如脱硫，具体形状，并通过脱硫精炼熔融金属。构成：将铁水，钢水等熔融金属4放入钢包2中，将喷枪浸入其中以将熔剂吹入熔融金属中，然后对熔融金属进行脱硫等初步精炼。用于防止具有轴环9和分段腿10的飞溅的盖体1放置在钢包2上，并且穿过主体1的上孔8插入喷枪以进行诸如脱硫的精炼。将本体1的腿部10的浸渍深度（d）制成> 50cm，并且分割腿部的外侧部分中的面积S2被确定为达到<=表面积的30％的整个熔融金属。防止熔融金属飞溅到钢包的外部，并且在钢包中的空间中从空气中吸收氮气，以便通过存在这种腿10来破坏其质量，在从喷枪吹入助焊剂的阶段。

4. 发明专利

JPS5943809A Production of low carbon high chromium steel 失效
标题翻译：生产低碳高铬钢
公开(公告)号：JPS5943809A
公开(公告)日：1984-03-12
申请号：JP15636282
申请日：1982-09-07
申请人： Sumitomo Metal Ind Ltd
发明人： NAKAJIMA HIDEO , OKAMURA SHIYOUZOU , YAMAZAKI ISAO , ANEZAKI MASAHARU
IPC分类号： C21C5/28 , C21C5/00
CPC分类号： C21C5/005
摘要： PURPOSE:To provide the reduced load of a converter having a means of stirring a steel bath and an improved yield of Cr and to enable multiplex casting by decarburizing the molten iron which is desiliconized and dephosphorized to a specific concn. of C in said converter and decarburizing and refining the same with a vacuum degassing device. CONSTITUTION:The molten iron which is desiliconized and dephosphorized is charged into a converter 1 and while a Cr source such as a Cr alloy from a feed port 3b is melted, gaseous O2 is blown from a lance 2 and gases for stirring are blown from bottom blowing nozzles 4, 4, whereby the molten iron is decarburized and refined. The waste gas generated in this stage is guided with a hood 3 to a recovering system. The molten iron is reduced and refined with the inert gas such as Ar or the like which is kept blown from the nozzles 4, 4 are the molten iron is decarburized to 0.20-0.49% concn. of C, then Cr is rcovered. The high Cr crude molten steel obtd. thereafter is introduced into a vacuum degassing device where gaseous O2 is blown to the molten steel under reduced pressure and the decarburization and refining in a low carbon region is accomplished.
摘要翻译：目的：为了提供具有搅拌钢浴的转炉装置的降低负荷并提高Cr的产量，并且能够通过将脱硅和去磷化的铁水脱碳到特定的浓度来进行多次铸造。的C，并用真空脱气装置对其进行脱碳和精炼。构成：将脱硅化脱磷后的铁水投入转炉1中，从进料口3b将Cr原料如Cr合金熔融，从喷枪2吹出气态O 2，从底部吹入用于搅拌的气体吹制喷嘴4,4，从而使铁水脱碳和精炼。在该阶段产生的废气由罩3引导到回收系统。铁水由惰性气体如Ar等还原并且被从喷嘴4保持吹出，铁水脱碳至0.20-0.49％。的C，则Cr被覆盖。高Cr粗钢水泥然后将其引入真空脱气装置，其中在减压下将气体O2吹送到钢水，并且在低碳区域中完成脱碳和精炼。

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