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1. 发明专利

JPS59101272A Sealing method of upper nozzle hole of ladle 失效
标题翻译：上部喷嘴孔的密封方法
公开(公告)号：JPS59101272A
公开(公告)日：1984-06-11
申请号：JP21055282
申请日：1982-12-02
申请人： Nippon Kokan Kk
发明人： KAWAKAMI KIMINARI , HOSODA YOSHIROU , SASAJIMA YASUTOSHI , KOISHIKAWA HIROSHI
IPC分类号： B22D41/44 , B22D41/16 , B22D41/24 , B22D41/10
CPC分类号： B22D41/24 , B22D41/16
摘要： PURPOSE:To improve the opening rate of a nozzle hole and to prevent the contamination of a cast steel by sealing the upper part of the upper nozzle hole of a ladle with a stopper head, sealing the lower part thereof with a sliding type opening and closing device and filling no packing material in the nozzle hole. CONSTITUTION:The upper part of an upper nozzle 2 of a ladle is sealed with a stopper head 6, and a sliding nozzle 4 is mounted the lower part of the nozzle 2. The inside of the hole of the nozzle 2 is kept empty without packing material. The casting operation is accomplished by opening the nozzle 4 then pulling upward the head 6 to release the seal, then the molten metal is smoothly charged from the ladle into the casting mold. The packing and discharging operation occurring in the packing material, the manual operation for opening the hole, the oxidation of the molten metal and the contamination of the cast steel on account of incorporation of a silicate component, etc. therein are thus eluminated and the clean cast steel is obtd.
摘要翻译：目的：为了提高喷嘴孔的开口率，并通过用止动头密封钢包的上喷嘴孔的上部来防止铸钢的污染，用滑动式开闭密封其下部装置并在喷嘴孔中不填充包装材料。构成：钢包的上喷嘴2的上部用止动头6密封，滑动喷嘴4安装在喷嘴2的下部。喷嘴2的孔的内部保持空而不包装材料。铸造操作通过打开喷嘴4然后向上拉头6以释放密封来实现，然后熔融金属从浇包平稳地装入铸造模具中。因此，在包装材料中发生的包装和排放操作，用于打开孔的手动操作，熔融金属的氧化以及由于硅酸盐组分等的引入而导致的铸钢污染，因此被清除铸钢是公认的。

2. 发明专利

JPS5930468A Removing method of clogging in nozzle 失效
标题翻译：喷嘴中的除菌方法
公开(公告)号：JPS5930468A
公开(公告)日：1984-02-18
申请号：JP13971282
申请日：1982-08-13
申请人： Nippon Kokan Kk
发明人： KANEKO KUNIHIKO , SAKURAI KOUICHI , YOSHIMURA NOBUO , SASAJIMA YASUTOSHI
IPC分类号： B22D41/60
CPC分类号： B22D41/60
摘要： PURPOSE:To remove safely and surely the clogging in a nozzle by heating inductively the molten or solidified metal in a nozzle of a vessel for molten metal. CONSTITUTION:The nozzle 2 in the bottom of a ladle 1 has an upper nozzle 2a and a lower nozzle 2b, and the sliding brick 3b of a opening/closing device 3 provided between the same moves horizotally with respect to a stationary brick 3a thereby opening and closing the nozzle 2. An induction coil 5 is provided at the circumference of the nozzle 2a and when AC current is conducted to said coil, the solidified steel in the nozzle 2a is inductively heated to melt. The clogging in the nozzle is thus safely and surely removed without contaminating the molten metal.
摘要翻译：目的：通过对熔融金属容器的喷嘴中的熔融或固化金属进行感应加热，安全可靠地清除喷嘴中的堵塞。构成：钢包1的底部的喷嘴2具有上喷嘴2a和下喷嘴2b，并且设置在相同位置的打开/关闭装置3的滑动砖3b相对于固定砖3a水平地移动从而打开并且关闭喷嘴2.感应线圈5设置在喷嘴2a的周边，并且当AC电流传导到所述线圈时，喷嘴2a中的凝固钢被感应加热熔化。因此，在不污染熔融金属的情况下，安全地且可靠地除去喷嘴中的堵塞。

3. 发明专利

JPS6112816A Decarburizing method under reduced pressure 失效
标题翻译：降低压力的减速方法
公开(公告)号：JPS6112816A
公开(公告)日：1986-01-21
申请号：JP13196784
申请日：1984-06-28
申请人： Nippon Kokan Kk
发明人： MORI HAJIME , SASAJIMA YASUTOSHI
IPC分类号： C21C7/072 , C21C7/10
CPC分类号： C21C7/10
摘要： PURPOSE:To enhance decarburizing and denitrifying effects by immersing a lance coated with refractoris in molten steel under reduced pressure and blowing a powdery oxidizing agent into the molten steel from the immersed part of the lance. CONSTITUTION:While evacuating a vacuum vessel 1, a vessel 2 contg. molten steel X is put in the vessel 1, and a lance 3 coated with refractories is immersed in the molten steel X. A powdery oxidizing agent Y is blown into the molten steel X from the immersed part of the lance 3. The molten steel X is vigorously agitated, and CO bubbles are generated by a large amount and float up in a long time, so more significant decarburizing and denitrifying the effects are produced as compared with a conventional method.
摘要翻译：目的：为了提高脱碳和脱氮效果，通过将涂敷有折射率的喷枪在减压下浸入钢水中，并从喷枪的浸入部分将粉状氧化剂吹入钢水中。构成：在抽真空容器1的同时，将钢水X放入容器1中，将涂有耐火材料的喷枪3浸渍在钢水X中。将粉末状氧化剂Y从喷枪3的浸渍部分吹入钢水X。钢水X 剧烈搅拌，大量生成CO气泡并长时间漂浮，因此与常规方法相比，产生更显着的脱碳和脱氮效果。

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