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1. 发明公开

US20230359519A9 Cross-Correlation Of Metrics For Anomaly Root Cause Identification 有权
公开(公告)号：US20230359519A9
公开(公告)日：2023-11-09
申请号：US17843198
申请日：2022-06-17
申请人： eBay Inc.
发明人： Maxwell Henry POOLE , Satish SAMBASIVAN , Vivek Siva KAUSHIK
IPC分类号： C22C38/50 , C21C5/54 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , C21C7/10 , C22C1/02 , C22C30/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
CPC分类号： C22C38/50 , C21C5/54 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , C21C7/10 , C22C1/02 , C22C30/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： Technologies are disclosed herein for cross-correlating metrics for anomaly root cause detection. Primary and secondary metrics associated with an anomaly are cross-correlated by first using the derivative of an interpolant of data points of the primary metric to identify a time window for analysis. Impact scores for the secondary metrics can be then be generated by computing the standard deviation of a derivative of data points of the secondary metrics during the identified time window. The impact scores can be utilized to collect data relating to the secondary metrics most likely to have caused the anomaly. Remedial action can then be taken based upon the collected data in order to address the root cause of the anomaly.

2. 发明授权

US11794238B2 Mold flux and casting method using same 有权
公开(公告)号：US11794238B2
公开(公告)日：2023-10-24
申请号：US17267577
申请日：2020-05-19
申请人： POSCO
发明人： Jun Yong Park , Tae In Chung , Seong Yeon Kim
IPC分类号： B22D11/07 , B22D11/108 , B22D11/111 , C21C7/076 , C22B9/10
CPC分类号： B22D11/07 , B22D11/108 , B22D11/111 , C21C7/076 , C22B9/10
摘要： Provided is a mold flux used for casing a cast slab, the mold flux including, bases on a total wt % of thereof, 32-38 wt % of aluminum oxide (Al2O3), 8-12 wt % of strontium oxide (SrO), 8-12 wt % of potassium oxide (K2O), 8-12 wt % of fluorine (F), 5-8 wt % of boron oxide (B2O3), 3-5 wt % of lithium oxide (Li2O), and inevitable impurities. Thus, according to the mold flux, a change in components due to silicon oxide (SiO2) and calcium oxide (CaO) may be suppressed or prevented compared to those in the conventional art.

3. 发明申请

US20220325392A1 Cross-Correlation Of Metrics For Anomaly Root Cause Identification 有权
公开(公告)号：US20220325392A1
公开(公告)日：2022-10-13
申请号：US17843198
申请日：2022-06-17
申请人： eBay Inc.
发明人： Maxwell Henry POOLE , Satish SAMBASIVAN , Vivek Siva KAUSHIK
IPC分类号： C22C38/50 , C21C5/54 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , C21C7/10 , C22C1/02 , C22C30/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44
摘要： Technologies are disclosed herein for cross-correlating metrics for anomaly root cause detection. Primary and secondary metrics associated with an anomaly are cross-correlated by first using the derivative of an interpolant of data points of the primary metric to identify a time window for analysis. Impact scores for the secondary metrics can be then be generated by computing the standard deviation of a derivative of data points of the secondary metrics during the identified time window. The impact scores can be utilized to collect data relating to the secondary metrics most likely to have caused the anomaly. Remedial action can then be taken based upon the collected data in order to address the root cause of the anomaly.

4. 发明授权

US11441211B2 Method for producing alloy steel 有权
公开(公告)号：US11441211B2
公开(公告)日：2022-09-13
申请号：US16328906
申请日：2016-12-16
申请人： POSCO
发明人： Woong Hee Han , Chong Tae Ahn , Soo Chang Kang , Jun Jeong Beak , Min Ho Song
IPC分类号： C22C33/04 , C22C38/04 , C22C33/06 , C21C7/076
摘要： Provided is a method for producing alloy steel, the method comprising producing first alloy steel in a temperature holding furnace; maintaining the first alloy steel at a temperature of no lower than a melting point in the temperature holding furnace; and producing second alloy steel having an alloy content lower than the alloy content in the first alloy steel by melt mixing of the first alloy steel and molten steel. In the producing of the alloy steel, melting and storing of the ferroalloy are continuously performed, and thus, the temperature drop of the ferroalloy may be suppressed or prevented.

5. 发明授权

US09382595B2 Method for the production and the purification of molten calcium aluminate using contaminated aluminum dross residue 有权
标题翻译：使用污染的铝渣渣生产和纯化熔融的铝酸钙的方法
公开(公告)号：US09382595B2
公开(公告)日：2016-07-05
申请号：US14177305
申请日：2014-02-11
申请人： 9255-8444 QUEBEC INC.
发明人： Ghyslain Dubé
IPC分类号： C01B33/24 , C21C7/04 , C21C1/06 , C21C7/00 , C22B7/04 , C21C1/02 , C21C7/064 , C21C7/076
CPC分类号： C21C7/00 , C21C1/025 , C21C7/0075 , C21C7/0087 , C21C7/0645 , C21C7/076 , C22B7/04 , Y02P10/218 , Y02P10/242
摘要： The present invention provides a process for the preparation of pre-melted calcium aluminate for iron and steel treatment and protection by the fusion of aluminum dross residues, usually referred to as non-metallic products (NMP) containing variable levels of aluminum (Al) and aluminum nitride (AlN) with calcium carbonate at high temperature, under oxidizing atmosphere. It further relates to the purification of the molten calcium aluminate from some contaminants present in the dross residue.
摘要翻译：本发明提供了一种制备用于钢铁处理和预处理的铝酸钙的方法，该方法通过熔融铝熔渣渣（通常被称为含有可变水平的铝（Al）的非金属产物（NMP））和氮化铝（AlN）与碳酸钙在高温下，在氧化气氛下。它还涉及从浮渣残渣中存在的一些污染物中纯化熔融的铝酸钙。

6. 发明授权

US09234252B2 Method for controlling A-shaped segregation by purification of liquid steel 有权
标题翻译：通过液态钢净化控制A型偏析的方法
公开(公告)号：US09234252B2
公开(公告)日：2016-01-12
申请号：US14105167
申请日：2013-12-12
申请人： INSTITUTE OF METAL RESEARCH CHINESE ACADEMY OF SCIENCES
发明人： Dianzhong Li , Paixian Fu , Hongwei Liu , Lijun Xia , Yiyi Li
IPC分类号： C21C7/10 , C21C7/064 , C21C7/06 , C21C7/076 , C21C7/00 , C22C38/22 , C22C38/40
CPC分类号： C21C7/064 , C21C7/0075 , C21C7/06 , C21C7/0645 , C21C7/076 , C21C7/10 , C22C38/22 , C22C38/40 , Y02P10/242
摘要： A method for controlling A-shaped segregation of steel ingot. The method includes: 1) controlling a content of phosphorus in liquid steel at less than or equal to 0.005 wt. % upon tapping from an electric furnace, preventing steel slag from entering a ladle, controlling content of harmful elements at less than or equal to 100 ppm; and adding between 3 and 15 kg of calcium oxide and less than or equal to 0.5 kg of aluminum to each ton of the liquid steel; 2) pre-deoxidizing the liquid metal using vacuum carbon deoxidation; 3) de-sulfurizing, controlling content of oxygen, and controlling the content of sulfur in the liquid steel at less than or equal to 0.005 wt. %; and 4) performing vacuum degasification, controlling the total oxygen content at less than or equal to 15 ppm; and casting the steel in the presence of inert gas or in vacuum.
摘要翻译：控制钢锭A型偏析的方法。该方法包括：1）控制钢液中的磷含量小于或等于0.005wt。从电炉出来，防止钢渣进入钢包，控制有害元素的含量小于或等于100ppm; 并向每吨液态钢中加入3至15kg的氧化钙和少于或等于0.5kg的铝; 2）使用真空碳脱氧对液态金属进行预脱氧; 3）脱硫，控制氧含量，控制钢液中硫的含量小于或等于0.005wt。％; 和4）进行真空脱气，控制总氧含量小于或等于15ppm; 并在惰性气体存在下或在真空中铸造钢。

7. 发明授权

US09051187B2 Agglomerated alumina containing product 有权
标题翻译：聚集的含氧化铝的产品
公开(公告)号：US09051187B2
公开(公告)日：2015-06-09
申请号：US13575802
申请日：2011-01-26
申请人： Samuel Hewitt
发明人： Samuel Hewitt
IPC分类号： C21C7/076 , C22B1/14 , C22B7/00 , C01C1/02 , C01F7/02 , C01F7/42 , C04B33/02 , C04B33/132 , C04B33/138 , C04B33/32 , C04B35/117 , C04B35/626
CPC分类号： C01C1/026 , C01F7/02 , C01F7/025 , C01F7/42 , C01P2004/50 , C04B33/025 , C04B33/1328 , C04B33/138 , C04B33/32 , C04B35/117 , C04B35/62695 , C04B2235/3201 , C04B2235/3206 , C04B2235/3208 , C04B2235/3217 , C04B2235/3218 , C04B2235/322 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3262 , C04B2235/3272 , C04B2235/3418 , C04B2235/3454 , C04B2235/3463 , C04B2235/3865 , C04B2235/402 , C04B2235/444 , C04B2235/447 , C04B2235/5427 , C04B2235/606 , C04B2235/72 , C04B2235/726 , C04B2235/80 , C21C7/076 , C22B1/14 , C22B7/00 , Y02P40/69
摘要： The invention relates to a method for producing an agglomerated product containing alumina which is useful as a component to be incorporated into a synthetic slag as used in steel making. The product is formed from powdered aluminium dross which is formed with water into pellets or briquettes and wherein the components of the pellets or briquettes are allowed to react at elevated pressure to release ammonia. The pellets or briquettes may then be calcined.
摘要翻译：本发明涉及一种生产含氧化铝的凝聚产物的方法，该方法可用作在钢铁制造中使用的合并炉渣中的组分。该产品由粉末状的铝渣形成，其由水形成颗粒或团块，并且其中使颗粒的组分或团块在升高的压力下反应释放氨。然后可以将颗粒或团块煅烧。

8. 发明授权

US08475561B2 Method for producing molten iron 失效
标题翻译：铁水生产方法
公开(公告)号：US08475561B2
公开(公告)日：2013-07-02
申请号：US12934453
申请日：2009-03-24
申请人： Masataka Tateishi , Hiroshi Sugitatsu , Hideaki Fujimoto
发明人： Masataka Tateishi , Hiroshi Sugitatsu , Hideaki Fujimoto
IPC分类号： C21C7/072 , C21C7/076
CPC分类号： C21C5/35
摘要： A method for producing molten iron by melting an iron source material using an iron bath-type melting furnace comprising a top-blowing lance at an upper part of the furnace, a bottom-blowing tuyere in the bottom of the furnace and a tap hole at a lower part on the side of the furnace, the method comprising: a melting process of melting the iron source material, wherein the melting process has at least one tapping process of discharging the molten iron and the slag through the tap hole while holding a position of the furnace in generating the molten iron, and the tapping process continues or interrupts generation of the molten iron and continues top-blowing of the oxygen-containing gas to thereby keep a temperature of the molten iron in the furnace at or above a pre-set lowest temperature of the molten iron.
摘要翻译：一种使用铁浴式熔融炉熔化铁源材料的方法，所述铁浴型熔炉包括炉顶部的顶吹喷枪，炉底部的底吹风口，所述方法包括：熔融所述铁源材料的熔融过程，其中所述熔化过程具有至少一个排出铁水和所述炉渣通过所述分接孔同时保持位置的排出过程的炉子产生铁水，并且攻丝过程继续或中断铁水的产生，并继续顶吹含氧气体，从而将炉中的铁水的温度保持在炉内等于或高于预定温度，设定铁水的最低温度。

9. 发明授权

US08105415B2 Low cost making of a low carbon, low sulfur, and low nitrogen steel using conventional steelmaking equipment 有权
标题翻译：使用传统炼钢设备低成本制造低碳，低硫和低氮钢
公开(公告)号：US08105415B2
公开(公告)日：2012-01-31
申请号：US12818619
申请日：2010-06-18
申请人： Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
发明人： Gary McQuillis , Jerome Jenkins , Neal Ross , Dhiren Panda , David John Sosinsky
IPC分类号： C21C7/06 , C21C7/064 , C21C7/068 , C21C7/076 , C21C7/10
CPC分类号： C21C5/54 , C21C7/0006 , C21C7/0043 , C21C7/0075 , C21C7/06 , C21C7/064 , C21C7/068 , C21C7/072 , C21C7/076 , C21C7/10 , C21C2250/08 , C21C2300/08 , C22C33/04 , Y02P10/216 , Y02P10/242
摘要： A method of making a steel with low carbon less than 0.035% by weight including steps of preparing a heat of molten steel composition in a steelmaking furnace to a tapping temperature as desired for desulfurization at a VTD, tapping open into a ladle the molten steel composition with an oxygen level between about 600 and 1120 ppm, providing slag forming compound to the ladle to form a slag cover over the molten steel composition in the ladle, transporting the molten steel to a VTD, decarburizing the molten steel composition at the VTD by drawing a vacuum of less than 650 millibars, after decarburizing, transporting the molten steel to an LMF and deoxidizing the molten steel composition, after deoxidizing, returning to the VTD to desulfurize and degas the molten steel composition, and casting the molten steel composition to form a steel with low carbon less than 0.035% by weight.
摘要翻译：一种制造低于0.035重量％的低碳钢的方法，包括在炼钢炉中制备钢水组合物的热量到VTD脱硫所需的出钢温度的步骤，将钢水组合物开放入钢包氧浓度在约600和1120ppm之间，向钢包提供炉渣形成化合物，以在钢包中的钢水组合物上形成炉渣盖，将钢水输送到VTD，通过拉伸对VTD上的钢水组合物进行脱碳真空度小于650毫巴，脱碳后，将钢水输送到LMF，脱气后，返回到VTD，使钢水组合物脱硫脱气，铸造钢水组合物小于0.035重量％的低碳钢。

10. 发明授权

US08012237B2 Process for producing molten iron 有权
标题翻译：铁水生产工艺
公开(公告)号：US08012237B2
公开(公告)日：2011-09-06
申请号：US12679128
申请日：2008-09-18
申请人： Hideaki Fujimoto , Tsuyoshi Mimura , Takao Harada , Masataka Tateishi , Kiminori Hajika , Hiroshi Sugitatsu
发明人： Hideaki Fujimoto , Tsuyoshi Mimura , Takao Harada , Masataka Tateishi , Kiminori Hajika , Hiroshi Sugitatsu
IPC分类号： C21C5/35 , C21C7/076 , C21C5/54
CPC分类号： C21C5/35 , C21B13/143 , C21C5/36 , C21C7/0025 , C21C2007/0062 , C22B11/00 , Y02P10/136
摘要： A process for producing molten iron is a process in which while an inert gas is blown into a molten iron layer in an iron bath type melting furnace through bottom-blown tuyeres provided in a hearth bottom thereof to stir the molten iron layer, a carbon material, an additive flux, and solid reduced iron obtained by heating reduction of carbon composite iron oxide briquettes are charged into the above melting furnace, and top blowing of an oxygen-containing gas is performed through a top-blown lance provided for the melting furnace, so that the solid reduced iron is melted by combustion heat obtained by combusting the carbon material and/or carbon in molten iron to form molten iron.
摘要翻译：铁水的制造方法是将惰性气体通过炉底底部的底吹风口吹入铁浴式熔融炉的铁水层，搅拌铁水层，，通过将碳复合氧化铁团块加热还原得到的添加助熔剂和固体还原铁装入上述熔融炉中，通过设置于熔融炉的顶吹喷枪进行含氧气体的顶吹，使得固体还原铁由于通过在铁水中燃烧碳材料和/或碳而形成铁水而获得的燃烧热而熔化。

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