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1. 发明专利

JPWO2015145945A1 真空溶解鋳造装置有权
公开(公告)号：JPWO2015145945A1
公开(公告)日：2017-04-13
申请号：JP2016509937
申请日：2015-02-10
申请人：株式会社アルバック
发明人：成司田代 , 成司田代 , 陽一大日向 , 陽一大日向 , 直樹日比野 , 直樹日比野 , 貴志大和田 , 貴志大和田
IPC分类号： B22D11/06 , B22D11/106 , B22D11/113 , B22D11/124 , B22D11/126 , F27D3/08 , F27D9/00 , F27D15/02
CPC分类号： B22D11/0697 , B22D11/001 , B22D11/0611 , B22D11/0628 , B22D11/064 , B22D11/068 , B22D11/113 , B22D11/12 , B22D11/124 , B22D11/1284 , B22D11/141 , F27D7/06 , F27D2007/066
摘要：鋳造物を略均等に二次冷却することができて小型化が可能な真空溶解鋳造装置を提供する。密閉容器1内に、溶解炉2と、溶解炉から出湯される溶湯を一次冷却して鋳造物を形成する冷却ロール4と、冷却ロールで形成された鋳造物を受け入れて二次冷却する回転自在な冷却ドラム5とを備える。冷却ドラムが、一側に開設されて鋳造物を受け入れる受入開口52と、他側に開設されて二次冷却された鋳造物を排出する排出開口53とを有する一方向に長手の筒状部材51と、筒状部材の回転に応じて受入開口から受け入れた鋳造物を排出開口に移送する移送手段54、55とを備える。

2. 发明专利

JP2002339040A THIN STEEL SHEET AND DEOXIDATION TREATMENT METHOD FOR MOLTEN STEEL FOR THIN STEEL SHEET 失效
公开(公告)号：JP2002339040A
公开(公告)日：2002-11-27
申请号：JP2001146136
申请日：2001-05-16
申请人： SUMITOMO METAL IND
发明人： FUKAGAWA MAKOTO , NISHI TAKAYUKI
IPC分类号： B22D11/00 , B22D11/108 , B22D11/113 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a thin steel sheet which has good surface quality and has no occurrence of surface flaws such as scab flaws and sliver flaws, and a deoxidation treatment method for molten steel for obtaining the same. SOLUTION: The thin steel sheet has a composition containing, by mass,

3. 发明专利

JP2002520162A 失效
公开(公告)号：JP2002520162A
公开(公告)日：2002-07-09
申请号：JP2000559951
申请日：1999-07-01
IPC分类号： B22D11/11 , B22D1/00 , B22D11/10 , B22D11/113 , C21C7/10 , C22B9/04 , C22B15/14

4. 发明专利

JP3061641B2 失效
公开(公告)号：JP3061641B2
公开(公告)日：2000-07-10
申请号：JP52797596
申请日：1996-03-11
IPC分类号： B22D11/10 , B22D11/04 , B22D11/07 , B22D11/108 , B22D11/113 , B22D11/18 , B22D41/50

5. 发明专利

JPH06114509A METHOD FOR REDUCING HYDROGEN IN SMALL LOT MATERIAL IN TUNDISH 失效
公开(公告)号：JPH06114509A
公开(公告)日：1994-04-26
申请号：JP28492892
申请日：1992-10-01
申请人： NIPPON STEEL CORP
发明人： SUGAWARA TAKESHI , YAMANAKA ATSUSHI , HASHIMOTO YASUHIRO , SUZUKI ISAO
IPC分类号： B22D11/10 , B22D11/108 , B22D11/11 , B22D11/112 , B22D11/113 , B22D11/116 , B22D11/117
摘要： PURPOSE:To provide a method for producing a small lot of steel grade having different components by adjusting the components in a tundish in continuous casting for steel. CONSTITUTION:In the casting of the steel, after completing pouring of the molten base steel from a ladle, in the condition of remaining the optional quantity of the molten base steel in the tundish, a tundish nozzle is closed to once stop the casting, and while heating the remained molten steel, the necessary alloy elements are added to produce the small lot of steel grade having the different components. Then, degassing treatment is executed to the molten base steel in the ladle and also, before producing the small lot of steel grade, the casting in plural heats is executed through the tundish and thereafter, the small lot of steel grade is produced by using the tundish and hydrogen in the small lot material is reduced.

6. 发明专利

JPH03281043A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH03281043A
公开(公告)日：1991-12-11
申请号：JP7843090
申请日：1990-03-27
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , USUI TSUTOMU , MIYAHARA SHINOBU , TEJIMA TOSHIO
IPC分类号： B22D11/10 , B22D11/112 , B22D11/113 , B22D11/116
摘要： PURPOSE:To obtain a double layered cast slab having different component in each layer by dividing molten metal charged in a tundish into the molten metal adjusted with the component in an air-tight vessel providing heating means and the molten metal, which is not charged in the air-tight vessel, and discharging them into positions of different depths through the separated submerged nozzle, respectively. CONSTITUTION:The molten metal 2a held in the tundish 10 is divided into the molten metal charged into a mold 41 through the first submerged nozzle 11 and the molten metal charged into the air-tight vessel 20 through an uptake tube 21. The molten metal 2a charged into the air-tight vessel 20 becomes the molten metal 2b by charging and mixing additive for adjusting the component from a hopper 24. The molten metal 2b adjusted with the component is cast into the mold 41 through a downtake tube 22 and the second submerged nozzle 12 connected with this. This molten metal 2a from a discharging hole 13 reaches formerly to mold wall face and solidifies to form surface layer part in the cast slab 43 and the molten metal 2b from the other discharging hole 14 fan from the surface solidifies in the inner part of cast slab. By this method, the double layered cast slab having different components on the surface layer part and in the inner part, can be easily produced.

7. 发明专利

JPH0317224A METHOD FOR TREATING AND REFINING OF MOLTEN STEEL BEFORE CONTINUOUS CASTING 失效
公开(公告)号：JPH0317224A
公开(公告)日：1991-01-25
申请号：JP15049389
申请日：1989-06-15
申请人： NIPPON KOKAN KK
发明人： ISHII TOSHIO , SUGIYAMA SHUNICHI , KIKUCHI YOSHITERU , MATSUNO EIJU
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/113 , B22D11/116 , B22D11/117 , C21C7/00 , C21C7/10
摘要： PURPOSE:To continuously cast a molten steel while maintaining the refining effect of vacuum refining by dissolving a soluble gas into the molten steel in a tundish, charging the molten steel into a vacuum chamber, subjecting the molten steel to degassing and the removal of inclusions and pouring the molten steel directly into a mold. CONSTITUTION:The molten steel 2 subjected to converter refining is continuously charged into the tundish 1 via a ladle and gaseous N2 is blown from a gas bubbling nozzle and is dissolved into the molten steel 2. This molten steel 2 is then blown with gaseous Ar from a gas blowing port of an immersion pipe 3a having a funnel shape and is thereby introduced into the vacuum chamber 3 under a prescribed reduced pressure. The molten steel 2 is degassed in the chamber and the fine gaseous N2 bubbles are generated and floated to remove the inclusions. The molten steel is poured directly into the mold via the sliding nozzle 4 having the funnel shape and is thereby continuously cast. The molten steel 2 which is subjected to the vacuum refining is continuously cast in this way without receiving contamination.

8. 发明专利

JPH02211974A METHOD FOR PURIFYING MOLTEN METAL BY REDUCTION OF PRESSURE 失效
公开(公告)号：JPH02211974A
公开(公告)日：1990-08-23
申请号：JP3110589
申请日：1989-02-13
申请人： NIPPON KOKAN KK
发明人： ISHII TOSHIO , KIKUCHI YOSHITERU , MATSUNO EIJU
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/113 , B22D11/116 , B22D11/117 , B22D43/00 , C21C7/10
摘要： PURPOSE:To fully degas at the bath bottom part at a small power load by inverting the bath storing molten metal while pressure is reduced and moving the molten metal at the bath bottom part to the bath side. CONSTITUTION:Soluble gas (N2) is dissolved from a gas inlet 11 into molten metal X in the bath 1 in a condition below an atmospheric pressure. Thereafter, pressure is reduced quickly to generate fine gaseous bubbles and the residual bubbling gas is degassed. Suspending inclusions in the molten metal X trapped by these bubbles are removed after they float off to purify the molten metal. For that purpose, the bath 1 storing the molten metal X under a reduced pressure is inverted to move the molten metal X at the bath bottom part to the bath side. Consequently, the amount of generation of fine gas bubbles from the bath bottom part can be increased.

9. 发明专利

JPH029902B2 失效
公开(公告)号：JPH029902B2
公开(公告)日：1990-03-05
申请号：JP12756083
申请日：1983-07-15
申请人： NISSHIN STEEL CO LTD
发明人： YAMAUCHI TAKASHI , MARUHASHI SHIGEAKI , HOSHI NORIO
IPC分类号： B22D11/06 , B22D11/10 , B22D11/112 , B22D11/113 , B22D11/115 , B22D11/116 , B22D11/118

10. 发明专利

JPH0225251A RH VACUUM DEGASSING TREATMENT 失效
公开(公告)号：JPH0225251A
公开(公告)日：1990-01-26
申请号：JP17253688
申请日：1988-07-13
申请人： KAWASAKI STEEL CO
发明人： MABUCHI MASAKI , NAKATO SAN , NOZAKI TSUTOMU
IPC分类号： B22D11/10 , B22D11/112 , B22D11/113 , B22D11/116
摘要： PURPOSE:To prevent the suction of converter slag and to obtain a clean molten steel by adjusting the immersion length of a riser to such a length at which the numerical value related by a molten steel density, molten steel reflux rate, the inside diameter of the riser and the immersion length of the riser attains a prescribed value or below. CONSTITUTION:The relation F=K.B is obtd. between the slug inclusion index B to the riser and the F expressed by the equation. The above-mentioned immersion length l is so adjusted that the value of the F of the equation related by said index B, the molten steel density rho(kg/cm ), the molten steel reflux rate Q(m /s), the inside diameter D(m) of the riser and the immersion length l(m) of the riser attains

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