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1. 发明授权

US08496046B2 Method for producing alloy ingot 有权
标题翻译：合金锭生产方法
公开(公告)号：US08496046B2
公开(公告)日：2013-07-30
申请号：US13384142
申请日：2010-07-15
申请人： Jumpei Nakayama , Tatsuhiko Kusamichi
发明人： Jumpei Nakayama , Tatsuhiko Kusamichi
IPC分类号： B22D27/02 , C22B9/10
CPC分类号： C22B9/003 , C21C7/064 , C21C7/068 , C22B9/006 , C22B9/10 , Y02P10/253
摘要： Disclosed is a method for producing alloy ingot including: a step of: charging alloy starting material into a cold crucible in a cold-crucible induction melter, and forming melt pool of the alloy starting material by induction heating in inert gas atmosphere; a step of continuing the induction heating and adding first refining agent to the melt pool, and then reducing the content of at least phosphorus from among impurity elements present in the melt pool; and a step of forming alloy ingot by solidifying the melt, the phosphorus content of which has been reduced. The first refining agent is mixture of metallic Ca and flux, where the flux contains CaF2 and at least one of CaO and CaCl2. The weight proportion of the sum of CaO and CaCl2 with respect to CaF2 ranges from 5 to 30 wt % and the weight proportion of metallic Ca with respect to the melt pool is 0.4 wt % or greater.
摘要翻译：公开了一种合金锭的制造方法，其特征在于，包括以下步骤：将合金原料装入冷坩埚感应熔炉中的冷坩埚中，并通过在惰性气体气氛中感应加热形成合金原料的熔池; 继续感应加热并将第一精炼剂加入到熔池中，然后从存在于熔池中的杂质元素中减少至少磷的含量的步骤; 以及通过使熔融物固化而形成合金锭的步骤，其中磷含量已经降低。第一精炼剂是金属Ca和助熔剂的混合物，其中助熔剂含有CaF 2和CaO和CaCl 2中的至少一种。 CaO和CaCl 2之和相对于CaF 2的重量比例为5〜30重量％，金属Ca相对于熔融池的重量比例为0.4重量％以上。

2. 发明申请

US20090038772A1 INDUCTION MELTING APPARATUS EMPLOYING HALIDE TYPE CRUCIBLE, PROCESS FOR PRODUCING THE CRUCIBLE, METHOD OF INDUCTION MELTING, AND PROCESS FOR PRODUCING INGOT OF ULTRAHIGH-PURITY FE-, NI-, OR CO-BASED ALLOY MATERIAL 有权
公开(公告)号：US20090038772A1
公开(公告)日：2009-02-12
申请号：US12095319
申请日：2006-11-21
申请人： Kazutaka Kunii , Tatsuhiko Kusamichi , Jumpei Nakayama , Kiyoshi Kiuchi
发明人： Kazutaka Kunii , Tatsuhiko Kusamichi , Jumpei Nakayama , Kiyoshi Kiuchi
IPC分类号： B22D27/02 , H05B6/36 , B23P17/00
CPC分类号： F27B14/10 , C04B35/5152 , C04B35/553 , C04B35/66 , C21C5/5241 , C22B9/003 , C22B23/06 , F27B14/061 , F27D1/0006 , H05B6/22 , Y02P10/253 , Y10T29/49
摘要： There is provided an induction-melting apparatus capable of exhibiting high refining performance without inflicting damage to a crucible even if a halide-compound base refining flux is used upon induction-melting of an ultrahigh-purity high melting-point metal, having a melting point reaching 1500° C., and a method for induction-melting using the same. There is also provided a melting method for enabling production of ultrahigh-purity Fe-base, Ni-base, and Co-base alloying materials, each having an impurity level of (C+O+N+S+P)

3. 发明授权

US07967057B2 Induction melting apparatus employing halide type crucible, process for producing the crucible, method of induction melting, and process for producing ingot of ultrahigh-purity Fe-, Ni-, or Co-based alloy material 有权
标题翻译：使用卤化物坩埚的感应熔炼装置，坩埚的制造方法，感应熔炼方法，以及制造超高纯Fe，Ni，Co系合金材料的锭的方法
公开(公告)号：US07967057B2
公开(公告)日：2011-06-28
申请号：US12095319
申请日：2006-11-21
申请人： Kazutaka Kunii , Tatsuhiko Kusamichi , Jumpei Nakayama , Kiyoshi Kiuchi
发明人： Kazutaka Kunii , Tatsuhiko Kusamichi , Jumpei Nakayama , Kiyoshi Kiuchi
IPC分类号： B22D27/02 , C22B9/10 , C22B9/16
CPC分类号： F27B14/10 , C04B35/5152 , C04B35/553 , C04B35/66 , C21C5/5241 , C22B9/003 , C22B23/06 , F27B14/061 , F27D1/0006 , H05B6/22 , Y02P10/253 , Y10T29/49
摘要： There is described a method for producing ultrahigh-purity Fe-base, Ni-base, and Co-base alloying materials to achieve impurity levels of (C+O+N+S+P)
摘要翻译：描述了制造超高纯度Fe基，Ni基和Co基合金材料以实现（C + O + N + S + P）<100ppm和Ca <10ppm的杂质水平的方法，以大锭的形式，在强制冷却坩埚的同时使用精炼助熔剂。在一次熔融期间，将熔融金属中的选自由元素周期表第IA，IIA和IIIA族的金属元素，其氧化物，卤化物及其混合物组成的精炼助剂加入到熔融金属中，并且保持熔融金属与精炼焊剂接触至少5分钟，然后再进行攻丝。此后，使熔融金属在模具内进行固化，从而制造一次锭。随后，通过电子束熔化法进行二次熔融，由此当初级晶锭在水冷铜模中以低压依次熔化时，熔融金属固化状态从水的出口侧被拉出冷却铜模，从而形成锭产品。

4. 发明授权

US6144690A Melting method using cold crucible induction melting apparatus 有权
标题翻译：使用冷坩埚感应熔炼装置的熔化方法
公开(公告)号：US6144690A
公开(公告)日：2000-11-07
申请号：US400995
申请日：1999-09-21
申请人： Tatsuhiko Kusamichi , Koichi Sakamoto , Hitoshi Ishida , Shingo Ninagawa , Motohiro Nagao , Katsuyuki Yoshikawa
发明人： Tatsuhiko Kusamichi , Koichi Sakamoto , Hitoshi Ishida , Shingo Ninagawa , Motohiro Nagao , Katsuyuki Yoshikawa
IPC分类号： C22B9/00 , C22B34/12 , F27B14/06 , F27B14/08 , F27D3/00 , H05B6/06
CPC分类号： C22B34/1295 , C22B9/003 , F27B14/063 , F27B2014/0818 , F27D3/0027 , Y02P10/253
摘要： The present invention relates to a melting method by which the melting raw materials having a variety of configurations are collectively melted to enable the composition to be adjusted in the melt, and a melting apparatus and tapping method by which tapping is readily controlled, wherein the raw materials are melted by flowing an electric current satisfying the frequency range defined by the equation below using a crucible with an inner diameter of 400 mm or more in melting using a cold crucible induction melting apparatus, the melt being tapped through a tapping nozzle provided at the bottom of the crucible and equipped with a tapping coil wound around the circumference of the nozzle:7.8.times.2.times.log(D).ltoreq.log(F).ltoreq.8.7-2.times.log(D)(wherein F denotes the frequency of a power supply and D denotes the inner diameter (mm) of the crucible).
摘要翻译：本发明涉及一种熔融方法，其中具有各种构型的熔融原料被共同熔化以使组合物能够在熔体中进行调节，并且可以容易地控制出料的熔化装置和攻丝方法，其中原料使用冷坩埚感应熔化装置在熔融时使用内径为400mm以上的坩埚流动满足下述式所定义的频率范围的电流来熔化材料，熔融体通过设置在坩埚底部装有围绕喷嘴圆周的攻丝线圈：7.8x2xlog（D）

5. 发明申请

US20120145353A1 METHOD FOR PRODUCING ALLOY INGOT 有权
标题翻译：生产合金的方法
公开(公告)号：US20120145353A1
公开(公告)日：2012-06-14
申请号：US13384142
申请日：2010-07-15
申请人： Jumpei Nakayama , Tatsuhiko Kusamichi
发明人： Jumpei Nakayama , Tatsuhiko Kusamichi
IPC分类号： B22D7/00 , B22D23/00
CPC分类号： C22B9/003 , C21C7/064 , C21C7/068 , C22B9/006 , C22B9/10 , Y02P10/253
摘要： Disclosed is a method for producing alloy ingot including: a step of: charging alloy starting material into a cold crucible in a cold-crucible induction melter, and forming melt pool of the alloy starting material by induction heating in inert gas atmosphere; a step of continuing the induction heating and adding first refining agent to the melt pool, and then reducing the content of at least phosphorus from among impurity elements present in the melt pool; and a step of forming alloy ingot by solidifying the melt, the phosphorus content of which has been reduced. The first refining agent is mixture of metallic Ca and flux, where the flux contains CaF2 and at least one of CaO and CaCl2. The weight proportion of the sum of CaO and CaCl2 with respect to CaF2 ranges from 5 to 30 wt % and the weight proportion of metallic Ca with respect to the melt pool is 0.4 wt % or greater.
摘要翻译：公开了一种合金锭的制造方法，其特征在于，包括以下步骤：将合金原料装入冷坩埚感应熔炉中的冷坩埚中，并通过在惰性气体气氛中感应加热形成合金原料的熔池; 继续感应加热并将第一精炼剂加入到熔池中，然后从存在于熔池中的杂质元素中减少至少磷的含量的步骤; 以及通过使熔融物固化而形成合金锭的步骤，其中磷含量已经降低。第一精炼剂是金属Ca和助熔剂的混合物，其中助熔剂含有CaF 2和CaO和CaCl 2中的至少一种。 CaO和CaCl 2之和相对于CaF 2的重量比例为5〜30重量％，金属Ca相对于熔融池的重量比例为0.4重量％以上。

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