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1. 发明专利

JPS61217514A PRODUCTION OF PRELIMINARY DEPHOSPHORIZING AGENT 失效
公开(公告)号：JPS61217514A
公开(公告)日：1986-09-27
申请号：JP6032785
申请日：1985-03-25
申请人： SUMITOMO METAL IND
发明人： YOSHIDA SHUJI , TATENO MASAKI , OKAMOTO SETSUO , MATSUO SHIGEYOSHI , KAWAYOSHI YATSUHIRO
IPC分类号： C21C1/02
摘要： PURPOSE:To produce a granular preliminary dephosphorizing agent easily and inexpensively by sucking and removing the molten slag of soda ash refining by an ejector and adding soda ash-contg. powder to the slag in the mid-way of suction. CONSTITUTION:The aperture at the bottom end of a suction pipe 3 of an ejector type slag sucking and discharging device 1 which ejects a high-pressure gas such as air from a high-pressure gas ejection pipe 4 into a discharge pipe 2 consisting of a pipe closed at one end and branched with the pipe 3 is brought near to the molten slag 7 generated by molten iron refining by the soda ash refining agent to suck the slag. The sucked slag is removed through a suction area 8. The soda ash-contg. collected dust 6 from a powder adding pipe 5 is ejected and added to the sucked slag 7 by using a carrier gas. The solidification of the slag 7 liquid drops is thereby accelerated to prevent clogging. The granular dephosphorizing agent 12 having adequate components are efficiently formed and are recovered into a recovering boxy 11 provided with an air filter 13 and an exhauster 14 through a lead-out pipe 10 from a scattering area 9.

2. 发明专利

JPS61189848A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS61189848A
公开(公告)日：1986-08-23
申请号：JP2792985
申请日：1985-02-15
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , YOSHIDA SHUJI , MATSUO SHIGEYOSHI , TATENO MASAKI , MORI TOSHIHIRO
IPC分类号： B22D11/10 , B22D11/11 , B22D43/00
摘要： PURPOSE:To draw out completely a residual molten steel in a tundish, at the time of finishing the pouring of a molten steel, by removing slag by sucking it at the time of finishing the pouring, in pouring the molten steel into a mold from a ladle through the tundish. CONSTITUTION:A molten steel S is charged into a tundish 1 from a ladle 2 through a ladle nozzle 3 and a long nozzle 4, and is poured into molds 6 from tundish nozzles 5. Here, the surface of molten steel S is a range of the molten steel S poured from the nozzle 3, is partitioned by an upper weir 7 sagged from the upper part in the tundish 1, to prevent the dispersion of slag Sl, contained in the poured molten steel. Then, when the charging of molten steel from the ladle 2 to the tundish 1 is finished, immediately before or after the finish of charging; the pouring of molten steel from the tundish 1 into the molds 6, is continued while removing the slag especially from the inside of weir 7 by a suction-type slag remover 8. And when the surface of residual molten steel in the tundish 1 descends lower than the weir 7, the pouring is continued till the residual molten steel is drawn out completely while removing th slag from the whole surface of molten metal, before withdrawing the empty tundish 1.

3. 发明专利

JPS61169144A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS61169144A
公开(公告)日：1986-07-30
申请号：JP1065985
申请日：1985-01-23
申请人： SUMITOMO METAL IND
发明人： MATSUO SHIGEYOSHI , TATENO MASAKI , YOSHIDA SHUJI , OKAMOTO SETSUO , MORI TOSHIHIRO
IPC分类号： B22D11/10 , B22D11/111 , B22D45/00
摘要： PURPOSE:To improve safely and highly efficiently the terminal part of an ingot and to make possible remote operation by starting the suction and removal of a molten layer consisting of powder, etc. by a dry type suction device right after or just before the end of casting into a mold and cooling the surface of a molten steel by the suction continued thereafter. CONSTITUTION:The suction port 3 of the dry type suction device 2 is disposed to a suitable position H above a molten metal surface S right after or just before the end of casting into the mold 1. The air G2 on the surface S is then sucked by the gas G1 ejected from an ejection port 4 by which the molten layer 7 consisting of the powder, etc. on the surface S is sucked together and is discharged G3 from a discharge pipe 6. The suction is continued thereafter until the ingot leaves the mold 1 to cool and solidify the surface S of the molten metal. The terminal of the ingot is improved without the need for charging of a coolant in the conventional practice. The above-mentioned suction system prevents the sticking of ore slag to the inside surface of the device 2 and contributes to the extension of the equipment life. The weldability of the sucked-up layer 7 is decreased if a basic compd. is blown by air from the midway of the suction pipe 5 into the suction device 2. The clogging and injury of said device are then prevented furthermore.

4. 发明专利

JPS6167543A Casting method of steel 失效
标题翻译：钢的铸造方法
公开(公告)号：JPS6167543A
公开(公告)日：1986-04-07
申请号：JP18891884
申请日：1984-09-11
申请人： Sumitomo Metal Ind Ltd
发明人： SHIDAGAWA SHIGEO , MARUKAWA YUJO , KASAI NOBUFUMI , OKAMOTO SETSUO
IPC分类号： B22D7/00 , B22D11/04 , B22D11/06 , B22D27/04
CPC分类号： B22D7/00 , B22D27/045
摘要： PURPOSE:To decrease internal segregation and shrinkable defects and to cast a steel having good internal quality by insulating the heat of the top surface of a molten steel having a specific depth or below and allowing the mooten steel to solidify positively from the bottom surface so as to execute substantially unidirectional solidification from the bottom surface toward the top surface. CONSTITUTION:The molten steel 4 poured into a casting mold 3 lined internally with the heat insulating material 2 on an ingot mold stool 1 is cooled only from the top surface and bottom surface or from the bottom surface and is allowed to solidify positively from the bottom surface of the steel 4 in a vertically short steel ingot method consisting in pouring the molten steel 4 into the above-mentioned casting mold so as to form an ingot having
摘要翻译：目的：为了减少内部偏析和收缩缺陷，并通过将具有特定深度或更低深度的钢水顶表面的热量绝热来铸造具有良好内部质量的钢，并允许成型钢从底面积极固化，以便从底面朝向上表面进行基本上单向的凝固。构成：将浇注在铸型3中的铸钢3内的绝热材料2浇铸在锭模凳1上仅从顶表面和底表面或从底表面冷却，并从底部积极固化钢4的表面以垂直短钢锭方法，包括将钢水4浇注到上述铸模中，以形成厚度<= 400mm的铸块。在从上表面的凝固钢形成为<30mm厚度之后，首先形成的固化层5由隔热材料6绝缘。因此，从底部到顶面的基本上单向凝固以这样的方式执行：最终凝固的部分7与层5相邻存在。因此改善了内部质量，并且消除了在铸造之后对钢材的表面层部分进行研磨的需要。因此，铸锭容易以高产量铸造。

5. 发明专利

JPS5934205B2 JPS5934205B2 - 失效
公开(公告)号：JPS5934205B2
公开(公告)日：1984-08-21
申请号：JP10206678
申请日：1978-08-21
申请人： Sumitomo Metal Ind
发明人： YAMAZAKI ISAO , NOSHITA KOHEI , OKAMOTO SETSUO
IPC分类号： C21C7/00 , C21C5/28 , C21C7/04

6. 发明专利

JPS5934204B2 JPS5934204B2 - 失效
公开(公告)号：JPS5934204B2
公开(公告)日：1984-08-21
申请号：JP4807178
申请日：1978-04-21
申请人： Sumitomo Metal Ind
发明人： MARUKAWA JUJO , HASHIKUMADA HIRONAGA , YAMAZAKI ISAO , OKAMOTO SETSUO
IPC分类号： C21C7/00 , C21C5/32
CPC分类号： C21C5/32

7. 发明专利

JPS581168B2 失效
公开(公告)号：JPS581168B2
公开(公告)日：1983-01-10
申请号：JP15020475
申请日：1975-12-18
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , IKEDA AKIO , TERASAKI FUKUNAGA
IPC分类号： C22C38/00 , C21D6/00 , C21D8/02 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48

8. 发明专利

JPS5770004A Manufacture of thick steel plate from longitudinally short-sized ingot 失效
标题翻译：从长期尺寸较小的INGOT制造厚钢板
公开(公告)号：JPS5770004A
公开(公告)日：1982-04-30
申请号：JP14706580
申请日：1980-10-21
申请人： Sumitomo Metal Ind Ltd
发明人： OKAMOTO SETSUO , KAWASAKI MORIO , NAKATSUKA YASUO , EKUSA HIROSHI
IPC分类号： B21B1/38
摘要： PURPOSE: To diffuse the carbon in a casting head of a slab, to eliminate the segregtion, and to improve the mechanical property and resistance to the hydrogen cracking, by blooming a longitudinally short-sized ingot into a slab, and by applying a soaking treatment to this slab under a prescribed condition.
CONSTITUTION: A slab, obtained by blooming a longitudinally short-sized ingot having a wide breadth as compared with its height, is subjected to a soaking treatment. This soaking treatment is carried out under a condition prescribed by the equation I concerning the soaking time X and the soaking temperature Y; then, the soaked slab is rolled to a thick steel plate. By the present method, the carbon diffuses in the casting head of the slab and the segregation is eliminated.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了将碳分散在板坯的铸造头中，为了消除分离，并通过将纵向短尺寸的锭块开坯成板坯，并且通过施加均热处理来改善机械性能和耐氢裂纹性在规定的条件下对该板坯。构成：通过将与其高度相比具有宽广度的纵向短尺寸的锭开花而获得的板坯进行均热处理。该均热处理在关于均热时间X和均热温度Y的等式I规定的条件下进行; 然后将浸泡的板坯轧制成厚钢板。通过本方法，在板坯的铸造头部中的碳扩散，并且消除了偏析。

9. 发明专利

JPS5650777A MANUFACTURE OF LONGITUDINALLY SHORT STEEL INGOT 失效
公开(公告)号：JPS5650777A
公开(公告)日：1981-05-08
申请号：JP12505579
申请日：1979-09-28
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , MARUKAWA YUUJIYOU , KIGUCHI HIROSHI , KITA YUKIMICHI , KAWASAKI MORIO
IPC分类号： B22D7/00 , B22D7/06 , B22D27/04 , B22D27/06
摘要： PURPOSE:To manufacture a fixed longitudinally short steel ingot without entailing a molding board crack by covering the inside wall of a mold with a heat insulator except a ring-shaped lip part and by specifying the ratios of molding board thickness and molding board weight to poured steel weight. CONSTITUTION:On molding board 1, flat mold 2 is mounted and the inside wall of it is covered with heat insulator 5 except ring-shaped lip part 3 at the inside of the bottom of mold 2. The thickness of molding board 2 should be not less than 350mm., and ratio W1/W2 of molding board weight W1 to poured steeel weight W2 not less than 0.7. Melted steel 4 to be poured into mold 2 is solidified radpidly by molding board 2 and ring-shaped lip part 3, minimizing the leakage of melted metal from the bottom of mold 2. Because of heat insulator 5, solidification from the side wall of mold 2 is prevented and because of heat insulator 6 placed over melted metal 4, that from the top of the melted metal is eliminated, attaining unidirectional solidification from the bottom of mold 2. Thus, the cracking of molding board 1 is prevented and the internal quality of the longitudinally short steel ingot is improved.

10. 发明专利

JPS54139818A REDUCING METHOD FOR HYDROGEN IN STEEL 失效
公开(公告)号：JPS54139818A
公开(公告)日：1979-10-30
申请号：JP4807178
申请日：1978-04-21
申请人： SUMITOMO METAL IND
发明人： MARUKAWA YUUJIYOU , HASHIKUMADA HIRONAGA , YAMAZAKI ISAO , OKAMOTO SETSUO
IPC分类号： C21C7/00 , C21C5/32
摘要： PURPOSE:To simply reduce the hydrogen content of steel by previously drying ferroalloy to be added to molten steel in a ladle with nitrogen or dry gas such as air to reduce moisture adhered to the ferroalloy. CONSTITUTION:Molten steel is charged from converter 1 into ladle 14, and Fe-Si or Fe-Mn is added to regulate the compsn. This ferroalloy is temporarily stored in connection pipe 5 leading to electromagnetic feeder 3 from bunkers 4, 4'. Nitrogen or air passed through a dehmidifier is optionally heated to 50-150 deg.C with heater 6 and passed through pipe 5. Thus, moisture adhered to the ferroalloy in pipe 5 is removed with the dry heated gas. This dehumidified ferroalloy is weighed with weigh ing machine 2 and added to ladle 14. An increase in hydrogen content due to moisture adhered to ferroalloy is prevented, and low hydrogen steel is obtd. easily.

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