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公开(公告)号：US11826804B2
公开(公告)日：2023-11-28
申请号：US16793782
申请日：2020-02-18
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
IPC分类号： B21C33/00 , B21C23/22 , B21C37/15 , B23P11/02 , B23K101/06
CPC分类号： B21C33/004 , B21C23/22 , B21C37/154 , B23P11/025 , B22F2998/10 , B23K2101/06
摘要： A method of producing a clad billet includes heating a corrosion resistant alloy (CRA) cylinder having a hollow interior to expand its inner diameter; inserting a solid carbon or low-alloy steel (CS) material into the hollow interior of the heated (CRA) cylinder so that an outer surface of the (CS) material faces the inner diameter of the (CRA) cylinder; cooling the (CRA) cylinder to contract and shrink the inner diameter of the (CRA) cylinder onto the outer surface of the (CS) material creating an interference fit at an interface with the outer surface, resulting in a composite billet assembly; and hot extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder. The clad billet can be hot-rolled to form metallurgically-bonded clad bar, or can be cold pilgered/cold drawn to form a metallurgically-bonded clad pipe.
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公开(公告)号：US20200276627A1
公开(公告)日：2020-09-03
申请号：US16793782
申请日：2020-02-18
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
摘要： A method of producing a clad billet includes heating a corrosion resistant alloy (CRA) cylinder having a hollow interior to expand its inner diameter; inserting a solid carbon or low-alloy steel (CS) material into the hollow interior of the heated (CRA) cylinder so that an outer surface of the (CS) material faces the inner diameter of the (CRA) cylinder; cooling the (CRA) cylinder to contract and shrink the inner diameter of the (CRA) cylinder onto the outer surface of the (CS) material creating an interference fit at an interface with the outer surface, resulting in a composite billet assembly; and hot extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder. The clad billet can be hot-rolled to form metallurgically-bonded clad bar, or can be cold pilgered/cold drawn to form a metallurgically-bonded clad pipe.
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公开(公告)号：US20210268563A1
公开(公告)日：2021-09-02
申请号：US17325586
申请日：2021-05-20
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
摘要： A method of producing a clad billet includes inserting a solid carbon or low-alloy steel (CS) material into a hollow interior of the slightly larger diameter (CRA) cylinder so that a standoff gap is provided between an outer surface of the (CS) material and the inner diameter of the (CRA) cylinder; providing an explosive material around the (CRA) cylinder; detonating the explosive material to collapse at least the inner diameter of the corrosion resistant alloy cylinder onto the outer surface of the solid carbon or low-alloy steel material and eliminate the standoff gap, creating at least a partial metallurgical bond at an interface with the outer surface and resulting in a composite billet assembly, and extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder.
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公开(公告)号：US20110017807A1
公开(公告)日：2011-01-27
申请号：US12508291
申请日：2009-07-23
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
CPC分类号： B21C37/154 , B23K20/04 , F16L9/02
摘要： A method of forming clad piping or tubing includes the steps of forming an assembly of a support billet having a cladding surface and a cladding material billet, sized to cooperate with the cladding surface of the support billet, with an interface gap defined between the cladding material billet and the cladding surface of the support billet, sealing the interface gap, evacuating the interface gap and metallurgically bonding the cladding material billet to the support billet by a Hot Iso-static Pressing process to form a composite billet; and hot-rolling through a rotary mill the composite billet to form the clad piping or tubing.
摘要翻译： 一种形成包层管道或管道的方法包括以下步骤：形成具有包层表面的支撑坯料和包覆材料坯料的组件，其尺寸与加载坯料的包覆表面配合，在包层材料 坯料和支撑坯料的包层表面，密封界面间隙，抽出界面间隙，通过热等静压法将包层材料坯料冶金结合到支撑坯料上，形成复合坯料; 并通过旋转磨机热轧该复合坯料以形成包覆管道或管道。
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公开(公告)号：US20110017339A1
公开(公告)日：2011-01-27
申请号：US12537986
申请日：2009-08-07
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
CPC分类号： B21C37/154 , B23K20/04 , F16L58/08
摘要： A method of forming clad piping or tubing includes the steps of forming an assembly of a support billet having a cladding surface and a cladding material billet, sized to cooperate with the cladding surface of the support billet, with an interface gap defined between the cladding material billet and the cladding surface of the support billet, sealing the interface gap, evacuating the interface gap and metallurgically bonding the cladding material billet to the support billet by a Hot Iso-static Pressing or weld overlay process to form a composite billet, and hot-rolling through a rotary mill the composite billet to form the clad piping or tubing.
摘要翻译： 一种形成包层管道或管道的方法包括以下步骤：形成具有包层表面的支撑坯料和包覆材料坯料的组件，其尺寸与加载坯料的包覆表面配合，在包层材料 坯料和支撑坯料的包层表面，密封界面间隙，抽出界面间隙，并通过热等静压或热覆层工艺将包层材料坯料冶金结合到支撑坯料上，形成复合坯料， 通过旋转磨机轧制复合坯料以形成包层管道或管道。
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公开(公告)号：US06691397B2
公开(公告)日：2004-02-17
申请号：US09978803
申请日：2001-10-16
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
IPC分类号： B23P2500
CPC分类号： B21C37/154 , B21B2015/0078 , B21C23/085 , B21C23/22 , Y10T29/49805 , Y10T29/4998
摘要： A method of forming clad piping or tubing includes the steps of providing a support billet, finished to a desired, predetermined dimension, having a cladding surface, and providing a CRA cladding material billet, similarly finished to a desired, predetermined dimension. The dimension of the CRA cladding material billet is predetermined such that the CRA cladding material fits onto a cladding surface of the support billet establishing an interface gap. Sealing the interface gap, evacuating the interface gap to form an assembly and Hot Iso-statically Pressing the assembly to metallurgically bond the CRA cladding material billet to the support billet to form a composite billet. The composite billet is extruded at high temperature to form the clad piping or tubing. The clad piping or tubing formed in also disclosed.
摘要翻译： 形成包层管道或管道的方法包括以下步骤：提供具有包层表面的成品到期望的预定尺寸的支撑坯料，并且提供类似于期望的预定尺寸的CRA包层材料坯料。 CRA包层材料坯料的尺寸是预定的，使得CRA包覆材料配合到支撑坯料的包覆表面上，建立界面间隙。 密封接口间隙，排出界面间隙以形成组件和热等静压组件将CRA包层坯料冶金结合到支撑坯料上以形成复合坯料。 复合坯料在高温下挤出以形成复合管或管。 还公开了形成的包层管道或管道。
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公开(公告)号：US4925638A
公开(公告)日：1990-05-15
申请号：US644994
申请日：1984-08-28
IPC分类号： G01K1/14
CPC分类号： G01K1/14
摘要： A thermowell assembly consists of an elongated tube member including a channel and having a plurality of arm members disposed at diverse lengths and extending into the channel of the tube member. Thermocouple guide tubes including passageways for receiving a thermocouple are disposed in the channel of the elongated tube member with a terminal end portion of each thermocouple guide tube being mounted to respective arm members.
摘要翻译： 热套管组件由包括通道的细长管构件组成，并具有设置在不同长度并延伸到管构件的通道中的多个臂构件。 包括用于接收热电偶的通道的热电偶引导管设置在细长管构件的通道中，每个热电偶引导管的末端部分安装到相应的臂构件。
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公开(公告)号：US4734266A
公开(公告)日：1988-03-29
申请号：US811489
申请日：1985-12-20
CPC分类号： F04D29/108
摘要： A pump seal oil system for a reactor pump wherein seal oil is provided at a pre-determined rate of flow without changing the rate of flow in response to pressure differences between the seal oil in the pump and the reactor pressure. Seal oil is provided at a first rate when the reactor pump is in operation and at a second higher rate when the reactor pump is not in operation.
摘要翻译： 一种用于反应堆泵的泵密封油系统，其中以预定流量提供密封油，而不改变响应于泵中的密封油和反应堆压力之间的压力差的流量。 当反应堆泵运行时，以第一速率提供密封油，当反应堆泵不工作时，以第二速率提供密封油。
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公开(公告)号：US4317271A
公开(公告)日：1982-03-02
申请号：US105178
申请日：1979-12-19
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
IPC分类号： B22D13/02 , B22D11/126
CPC分类号： B22D13/02 , Y10T29/49972 , Y10T29/49975 , Y10T29/49977 , Y10T29/49989
摘要： A method and apparatus for making metal tubes (12) by centrifugally casting muffs (12) in a rotating mold (10), the inner diameter of which is tapered, having a smaller diameter at the pouring end (14) and a larger diameter at the non-pouring end. The outer diameter of the resulting muff is then machined (30) to form a cylindrical member of uniform diameter along its entire length. The inner diameter is also machined (28) smooth, and the finished muff is then reduced (32,34) in diameter and wall thickness to make a long tube (12).
摘要翻译： 一种用于通过在旋转模具（10）中离心铸造套筒（12）来制造金属管（12）的方法和装置，该旋转模具（10）的内径是锥形的，在浇注端（14）处具有较小的直径， 非浇注端。 然后对所得到的套筒的外径加工（30），以形成其整个长度均匀直径的圆柱形构件。 内径也被加工（28）光滑，直径和壁厚缩小（32,34），制成长管（12）。
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公开(公告)号：US11826805B2
公开(公告)日：2023-11-28
申请号：US17325586
申请日：2021-05-20
申请人： Bhaven Chakravarti
发明人： Bhaven Chakravarti
CPC分类号： B21C37/06 , B21C23/22 , B21C33/004 , B21C29/003
摘要： A method of producing a clad billet includes inserting a solid carbon or low-alloy steel (CS) material into a hollow interior of the slightly larger diameter (CRA) cylinder so that a standoff gap is provided between an outer surface of the (CS) material and the inner diameter of the (CRA) cylinder; providing an explosive material around the (CRA) cylinder; detonating the explosive material to collapse at least the inner diameter of the corrosion resistant alloy cylinder onto the outer surface of the solid carbon or low-alloy steel material and eliminate the standoff gap, creating at least a partial metallurgical bond at an interface with the outer surface and resulting in a composite billet assembly; and extruding the composite billet assembly to reduce its size and form the clad billet having a metallurgical bond between the (CS) material and the (CRA) cylinder.
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