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11. 发明授权

US10465258B2 Grain refinement in iron-based materials 有权
公开(公告)号：US10465258B2
公开(公告)日：2019-11-05
申请号：US15567142
申请日：2016-04-18
申请人： The Curators of the University of Missouri
发明人： Simon Lekakh , Von Richards , Ronald O'Malley , Jun Ge
IPC分类号： C21C7/00 , C21C7/068 , C22C33/04 , C21C7/06 , C22C38/06 , C22C38/28 , C22C38/02 , C22C38/04 , C22C38/44 , C21C7/064
摘要： A process for manufacturing an iron-based alloy comprising forming targeted fine oxide and/or carbide dispersoids in a melt, and sequentially precipitating transition-metal nitrides on the dispersoids for heterogeneous nucleation of equiaxed grains. An iron-based cast alloy having a highly equiaxed fine grain structure.

12. 发明申请

US20180100208A1 GRAIN REFINEMENT IN IRON-BASED MATERIALS 审中-公开
公开(公告)号：US20180100208A1
公开(公告)日：2018-04-12
申请号：US15567142
申请日：2016-04-18
申请人： The Curators of the University of Missouri
发明人： Simon Lekakh , Von Richards , Ronald O'Malley , Jun Ge
IPC分类号： C21C7/00 , C21C7/06 , C21C7/064 , C22C33/04 , C22C38/44 , C22C38/28 , C22C38/06 , C22C38/02 , C22C38/04
CPC分类号： C21C7/0006 , C21C7/06 , C21C7/0645 , C21C7/068 , C21C7/0685 , C22C33/04
摘要： A process for manufacturing an iron-based alloy comprising forming targeted fine oxide and/or carbide dispersoids in a melt, and sequentially precipitating transition-metal nitrides on the dispersoids for heterogeneous nucleation of equiaxed grains. An iron-based cast alloy having a highly equiaxed fine grain structure.

13. 发明授权

US09869002B2 Method for manufacturing duplex stainless steel sheet having reduced inclusions 有权
公开(公告)号：US09869002B2
公开(公告)日：2018-01-16
申请号：US14962424
申请日：2015-12-08
申请人： POSCO
发明人： Sung Jin Park , Man Jin Ha , Dae Sung Lee
IPC分类号： C21C7/06 , C21D3/04 , C22C38/58 , C22C38/42 , C22C38/02 , C22C38/00 , C21C5/00 , C21C7/00 , C21C7/064 , C21C7/068 , B22D11/00 , B22D11/06
CPC分类号： C21D3/04 , B22D11/002 , B22D11/0622 , C21C5/005 , C21C7/0075 , C21C7/0087 , C21C7/06 , C21C7/064 , C21C7/0685 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/42 , C22C38/58
摘要： There is provided a method for manufacturing a duplex stainless steel sheet having reduced inclusions through argon oxygen decarburization (AOD), ladle treatment (LT), and twin roll strip casting. The method includes deoxidizing molten steel using silicon (Si) during the AOD, wherein the molten steel has a silicon (Si) content of 0.55 wt % to 0.75 wt % at the end of the AOD.

14. 发明授权

US09695492B2 Methods and systems for producing ferro-chrome in a duplex furnace 有权
公开(公告)号：US09695492B2
公开(公告)日：2017-07-04
申请号：US14291701
申请日：2014-05-30
申请人： Vincent Chevrier
发明人： Vincent Chevrier
IPC分类号： C21C5/52 , C21C7/064 , C22C1/06 , C22C1/02 , C22C27/06 , C22B34/32 , C21B13/00 , C21B13/10 , C21B13/14
CPC分类号： C22C27/06 , C21B13/006 , C21B13/105 , C21B13/143 , C21B2200/00 , C21C5/5229 , C21C5/5264 , C21C7/064 , C22B34/32 , C22C1/02 , C22C1/06 , Y02P10/212
摘要： A method for producing a high purity high carbon molten chrome product from chrome and carbon bearing material, said method comprising the steps of: (a) continuously introducing chrome compacts directly into an electric melter; (b) heating and melting the chrome compacts in the electric melter at a temperature of between about 1300° C. to about 1700° C. to form high carbon molten chrome; (c) preventing oxidation of the high carbon molten chrome via minimization of the ingress of oxygen containing gas in said heating step; (d) carburizing the high carbon molten chrome to form high carbon molten metallized chrome; (e) purifying the high carbon molten metallized chrome by reducing silicon oxides to silicon and desulfurizing the high carbon molten metallized chrome to produce the high purity high carbon molten chrome product; and (f) discharging the high purity high carbon molten chrome product from the electric melter.

15. 发明申请

US20170009311A1 SECONDARY MATERIAL FOR STEEL REFINING 审中-公开
标题翻译：钢精炼二次材料
公开(公告)号：US20170009311A1
公开(公告)日：2017-01-12
申请号：US15116411
申请日：2015-02-05
申请人： Kabushiki Kaisha Kobe Seiko Sho ( Kobe Steel, Ltd.)
发明人： Takero ADACHI , Takashi SUGITANI , Takashi TSUSHIMA , Makoto MORISHITA
IPC分类号： C21C7/064
CPC分类号： C21C7/0645 , C21C1/025 , C22B7/04 , Y02P10/212
摘要： A secondary material for steel refining is to be supplied to a molten iron together with a lime so as to promote a desulfurization reaction in the molten iron. The secondary material for steel refining contains aluminum nitride in an amount of 20 wt % or more in terms of weight percentage.
摘要翻译：用于炼钢的辅助材料将与石灰一起供应到铁水，以促进铁水中的脱硫反应。钢精炼用二次材料以重量百分比计含有20重量％以上的氮化铝。

16. 发明授权

US09322073B1 Preparation of flux lime for a BOF converter including conversion of troublesome fines to high quality fluidized lime 有权
标题翻译：制备用于BOF转炉的助熔石灰，包括将麻烦的细粉转化为高质量的流化石灰
公开(公告)号：US09322073B1
公开(公告)日：2016-04-26
申请号：US14200688
申请日：2014-03-07
申请人： ALMAMET USA, Inc.
发明人： Frank Herwig
IPC分类号： C21C7/064 , C21C7/076 , C04B2/02 , B02C23/08 , B07B1/28 , C21C7/00
CPC分类号： C21C7/0645 , B02C23/08 , B07B1/00 , B07B1/28 , C04B2/02 , C04B2/10 , C21C1/025 , C21C7/0037 , C21C7/064 , C21C7/076 , Y02P10/242
摘要： Crushed flux lime to be used in a BOF converter is processed to minimize waste dust, obviate environmental complications caused by high pH in waste water, and to utilize a very high percentage of the original crushed lime for useful products. The crushed flux lime is screened to provide a fine grain fraction and a modified flux lime fraction. Only a small percentage of the modified flux lime fraction is dust which may be removed in a dust collection system, and the modified flux lime fraction is then passed to the BOF converter. The fine grain fraction is made into a highly fluidized lime of very small dimensions by pulverizing it further in the presence of a fluidizing agent.
摘要翻译：在BOF转炉中使用粉碎的助焊剂石灰进行处理以最大限度地减少废粉尘，避免废水中高pH引起的环境并发症，并利用非常高百分比的原始碎石灰作为有用的产品。筛选粉碎的助熔石灰以提供细晶粒部分和改性的助熔石灰级分。改性助熔石灰级分中仅有一小部分是灰尘，可以在灰尘收集系统中除去，然后将经过改性的助熔石灰馏分送入BOF转化器。通过在流化剂的存在下进一步粉碎将细晶粒部分制成非常小尺寸的高度流化的石灰。

17. 发明授权

US08057570B2 Electric arc furnace steelmaking 失效
标题翻译：电弧炉炼钢
公开(公告)号：US08057570B2
公开(公告)日：2011-11-15
申请号：US11665057
申请日：2005-10-10
申请人： Christopher Martin Hayman , Stephan Heinz Josef Victor Weber
发明人： Christopher Martin Hayman , Stephan Heinz Josef Victor Weber
IPC分类号： C21B13/12 , C21C7/064
CPC分类号： C21C5/5252 , C21B13/0006 , C21B13/14 , C21C5/527 , C21C5/567 , C21C7/064
摘要： Efficient coordination of processing (by desulphurizing) and moving hot metal from a direct smelter, producing hot metal on a continuous basis, to an electric arc furnace or furnaces, operating on a batch basis, is disclosed. The invention includes the use of hot metal storage devices, such as ladles, that are large enough to supply hot metal for a small number, preferably two or three, of electric arc furnace batch operations.
摘要翻译：公开了通过连续的生产热金属的直接冶炼炉的加工（通过脱硫）和将铁水移动到电弧炉或炉中的有效协调。本发明包括使用足够大的热金属储存装置（例如钢包）来供应少量，优选两个或三个电弧炉批量操作的热金属。

18. 发明授权

US07785393B2 Refinement of steel 有权
标题翻译：炼钢
公开(公告)号：US07785393B2
公开(公告)日：2010-08-31
申请号：US12434140
申请日：2009-05-01
申请人： Eugene Pretorius
发明人： Eugene Pretorius
IPC分类号： C21C7/064
CPC分类号： B22D11/116 , C21C7/0075 , C21C7/06 , C21C7/0645
摘要： A method of forming and refining molten silicon-bearing steel by addition of a calcium-containing silicon additive. Determine if the amount of calcium in the calcium-containing silicon additive is more or less than the amount of calcium desired in the finished steel. If it is more than the amount of calcium desired in the finished steel, add the amount of calcium-containing silicon additive corresponding to the excess calcium early during steel deoxidation or in refining to combine with oxygen, sulfur and other impurities in refining, and add the calcium-containing silicon additive containing the total amount of calcium desired in the finished steel after the desulfurization of the molten steel and before casting. If the amount of calcium in the calcium-containing silicon additive does not provide the total amount of calcium desired in the finished steel, adding an additional amount of calcium after desulfurization of the molten steel and before casting to the molten steel during refining.
摘要翻译：通过添加含钙硅添加剂来形成和精炼熔融含硅钢的方法。确定含钙硅添加剂中的钙量是否大于成品钢中所需的钙的量。如果超过成品钢中所需的钙量，则在钢脱氧或精炼过程中加入与过量钙相应的含钙硅添加剂的量与炼制中的氧，硫等杂质结合，并加入该含钙硅添加剂含有在钢水脱硫后和铸造前在成品钢中所需的钙的总量。如果含钙硅添加剂中的钙的量不能提供成品钢中所需的钙的总量，则在精炼中在钢水脱硫之后并在铸造之前添加额外的钙。

19. 发明申请

US20050257644A1 Refining agent and refining method 审中-公开
标题翻译：精炼剂和精炼方法
公开(公告)号：US20050257644A1
公开(公告)日：2005-11-24
申请号：US10363717
申请日：2001-09-14
申请人： Yoshie Nakai , Takeshi Murai , Hidetoshi Matsuno , Yoshiteru Kikuchi , Kenji Takahashi , Yoichi Nimura , Hiroshi Shimizu , Tomoo Isawa , Takeshi Kawashima , Tatsuya Okamura
发明人： Yoshie Nakai , Takeshi Murai , Hidetoshi Matsuno , Yoshiteru Kikuchi , Kenji Takahashi , Yoichi Nimura , Hiroshi Shimizu , Tomoo Isawa , Takeshi Kawashima , Tatsuya Okamura
IPC分类号： C21B3/04 , C21C1/02 , C21C7/04 , C21C7/06 , C21C7/064 , C21C7/072 , C21C7/076
CPC分类号： C21C7/076 , C21B3/04 , C21C1/025 , C21C7/04 , C21C7/06 , C21C7/0645 , C21C7/072 , Y02P10/216 , Y02P10/242 , Y02W30/542
摘要： A refining agent contains Al, MgO, and CaO as main components, and uses dolomite as a MgO source and CaO source. When the refining agent is supplied into molten iron, it produces Mg vapor due to a reaction in the molten iron, and causes a refining reaction by the Mg vapor.
摘要翻译：精炼剂含有Al，MgO和CaO作为主要成分，并使用白云石作为MgO源和CaO源。当精炼剂被供应到铁水中时，由于铁水中的反应而产生Mg蒸气，并且通过Mg蒸汽引起精炼反应。

20. 发明授权

US06841123B1 Rust-resistant calcium steel 有权
标题翻译：防锈钙钢
公开(公告)号：US06841123B1
公开(公告)日：2005-01-11
申请号：US09680088
申请日：2000-10-05
申请人： Seiji Nabeshima , Yasuo Kishimoto , Shuji Takeuchi
发明人： Seiji Nabeshima , Yasuo Kishimoto , Shuji Takeuchi
IPC分类号： B22D11/00 , B22D11/108 , C21C7/00 , C21C7/06 , C21C7/064 , C22C38/00 , C22C38/02
CPC分类号： C22C38/004 , C21C7/064 , C22C38/002
摘要： The composition of inclusions and the S concentration in steel are controlled in a manner such that, among the CaO-containing oxide inclusions present in a Ca-containing steel, an equilibrium S soluble amount (% S inc.) of at least 80% of the oxide inclusion particles having a particle diameter of 2 μm or more are about 0.03 wt % or less, thereby inhibiting rust formation due to the inclusions, thus solving a problem which has long been of concern in Ca-containing steels.
摘要翻译：以含有Ca的钢中存在的CaO的氧化物夹杂物中的平均S溶解量（％S inc。）为至少80％以上的方式控制夹杂物的组成和钢中的S浓度粒径为2μm以上的氧化物夹杂物粒子为0.03重量％以下，因此能够抑制由夹杂物引起的生锈，因此解决了含Ca钢中长期以来关注的问题。

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