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公开(公告)号：US07553443B2
公开(公告)日：2009-06-30
申请号：US11641421
申请日：2006-12-19
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle provided below the supply part. The nozzle is provided with a flow path defined by an inner circumferential surface of the nozzle through which the molten metal supplied from the supply part can pass. The inner circumferential surface of the nozzle has a gradually reducing inner diameter portion whose inner diameter is gradually reduced in a downward direction. The nozzle is further provided with an orifice opened at a bottom end of the flow path and adapted to inject water toward the flow path. The nozzle has a first member having the gradually reducing inner diameter portion and a second member provided below the first member with a space left between the first member and the second member. The orifice is defined by the first member and the second member. A heat absorption body is provided on the first member. The absorption body serves as a restraint means for, when heated, deforming a surrounding region of the gradually reducing inner diameter portion of the first member to thereby restrain the orifice from being enlarged by the pressure of the water passing through the orifice.
摘要翻译： 金属粉末生产设备包括用于供应熔融金属的供应部分和设置在供应部分下方的喷嘴。 喷嘴设置有由喷嘴的内周面限定的流路，从供给部供给的熔融金属可以通过该流路。 喷嘴的内周面具有逐渐减小的内径部，其内径沿向下方向逐渐减小。 喷嘴还设置有在流动路径的底端处开口并且适于向流动路径注入水的孔口。 所述喷嘴具有第一部件，所述第一部件具有逐渐减小的内径部分，第二部件设置在所述第一部件的下方，在所述第一部件和所述第二部件之间留有空间。 孔由第一构件和第二构件限定。 在第一构件上设置吸热体。 吸收体用作约束装置，用于当加热时使第一构件的逐渐减小的内径部分的周围区域变形，从而通过通过孔口的水的压力来限制孔口扩大。
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公开(公告)号：US20070138713A1
公开(公告)日：2007-06-21
申请号：US11641520
申请日：2006-12-19
IPC分类号： C21C7/00
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle provided below the supply part. The nozzle is provided with a flow path through which the molten metal supplied from the supply part can pass, the flow path having a gradually reducing inner diameter portion whose inner diameter is gradually reduced in a downward direction. The nozzle is further provided with an orifice opened at a bottom end of the flow path and adapted to inject fluid toward the flow path. The nozzle has a first member and a second member provided below the first member with a space left between the first member and the second member, wherein the orifice is defined by the first member and the second member. A clamp for restraining the orifice from being enlarged by the pressure of the fluid passing through the orifice is provided on the nozzle.
摘要翻译： 金属粉末生产设备包括用于供应熔融金属的供应部分和设置在供应部分下方的喷嘴。 喷嘴设置有从供给部供给的熔融金属能够通过的流路，该流路具有内径逐渐减小的逐渐减小的内径部。 喷嘴还设置有在流动路径的底端处开口并适于朝向流动路径注入流体的孔口。 喷嘴具有第一构件和第二构件，第二构件设置在第一构件下方，在第一构件和第二构件之间留有空间，其中孔由第一构件和第二构件限定。 在喷嘴上设置有用于限制孔口被通过孔口的流体的压力扩大的夹具。
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公开(公告)号：US07485254B2
公开(公告)日：2009-02-03
申请号：US11641428
申请日：2006-12-19
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle having a first member and a second member by which an orifice for injecting water is defined. The first member has a gradually reducing inner diameter portion. A heat insulating layer for cutting off radiant heat emitted from the molten metal is formed on the gradually reducing inner diameter portion of the first member. the nozzle is configured to ensure that the gradually reducing inner diameter portion is prevented, under an action of the heat insulating layer, from being thermally deformed by the radiant heat of the molten metal but a region of the first member near the orifice is thermally deformed in such a direction as to reduce a size of the orifice by absorbing the radiant heat of the molten metal, whereby the orifice can be restrained from being enlarged by the pressure of the water passing through the orifice.
摘要翻译： 一种金属粉末生产设备包括用于供应熔融金属的供应部件和具有第一部件和第二部件的喷嘴，通过该第二部件限定了用于喷射水的喷嘴。 第一构件具有逐渐减小的内径部分。 在第一构件的逐渐减小的内径部分上形成用于切断从熔融金属发出的辐射热的隔热层。 喷嘴构造成确保在绝热层的作用下防止逐渐减小的内径部分被熔融金属的辐射热引起热变形，但是孔口附近的第一部件的区域发生热变形 在通过吸收熔融金属的辐射热来减小孔口的尺寸的方向上，由此可以通过通过孔口的水的压力来限制孔口的扩大。
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公开(公告)号：US20070138712A1
公开(公告)日：2007-06-21
申请号：US11641428
申请日：2006-12-19
IPC分类号： C21C7/00
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle having a first member and a second member by which an orifice for injecting water is defined. The first member has a gradually reducing inner diameter portion. A heat insulating layer for cutting off radiant heat emitted from the molten metal is formed on the gradually reducing inner diameter portion of the first member. the nozzle is configured to ensure that the gradually reducing inner diameter portion is prevented, under an action of the heat insulating layer, from being thermally deformed by the radiant heat of the molten metal but a region of the first member near the orifice is thermally deformed in such a direction as to reduce a size of the orifice by absorbing the radiant heat of the molten metal, whereby the orifice can be restrained from being enlarged by the pressure of the water passing through the orifice.
摘要翻译： 一种金属粉末生产设备包括用于供应熔融金属的供应部件和具有第一部件和第二部件的喷嘴，通过该第二部件限定了用于喷射水的喷嘴。 第一构件具有逐渐减小的内径部分。 在第一构件的逐渐减小的内径部分上形成用于切断从熔融金属发出的辐射热的隔热层。 喷嘴构造成确保在绝热层的作用下防止逐渐减小的内径部分被熔融金属的辐射热引起热变形，但是孔口附近的第一部件的区域发生热变形 在通过吸收熔融金属的辐射热来减小孔口的尺寸的方向上，由此可以通过通过孔口的水的压力来限制孔口的扩大。
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公开(公告)号：US20070138711A1
公开(公告)日：2007-06-21
申请号：US11641421
申请日：2006-12-19
IPC分类号： C21C7/00
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle provided below the supply part. The nozzle is provided with a flow path defined by an inner circumferential surface of the nozzle through which the molten metal supplied from the supply part can pass. The inner circumferential surface of the nozzle has a gradually reducing inner diameter portion whose inner diameter is gradually reduced in a downward direction. The nozzle is further provided with an orifice opened at a bottom end of the flow path and adapted to inject water toward the flow path. The nozzle has a first member having the gradually reducing inner diameter portion and a second member provided below the first member with a space left between the first member and the second member. The orifice is defined by the first member and the second member. A heat absorption body is provided on the first member. The absorption body serves as a restraint means for, when heated, deforming a surrounding region of the gradually reducing inner diameter portion of the first member to thereby restrain the orifice from being enlarged by the pressure of the water passing through the orifice.
摘要翻译： 金属粉末生产设备包括用于供应熔融金属的供应部分和设置在供应部分下方的喷嘴。 喷嘴设置有由喷嘴的内周面限定的流路，从供给部供给的熔融金属可以通过该流路。 喷嘴的内周面具有逐渐减小的内径部，其内径沿向下方向逐渐减小。 喷嘴还设置有在流动路径的底端处开口并且适于向流动路径注入水的孔口。 所述喷嘴具有第一部件，所述第一部件具有逐渐减小的内径部分，第二部件设置在所述第一部件的下方，在所述第一部件和所述第二部件之间留有空间。 孔由第一构件和第二构件限定。 在第一构件上设置吸热体。 吸收体用作约束装置，用于当加热时使第一构件的逐渐减小的内径部分的周围区域变形，从而通过通过孔口的水的压力来限制孔口扩大。
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公开(公告)号：US07368078B2
公开(公告)日：2008-05-06
申请号：US11641520
申请日：2006-12-19
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a supply part for supplying molten metal and a nozzle provided below the supply part. The nozzle is provided with a flow path through which the molten metal supplied from the supply part can pass, the flow path having a gradually reducing inner diameter portion whose inner diameter is gradually reduced in a downward direction. The nozzle is further provided with an orifice opened at a bottom end of the flow path and adapted to inject fluid toward the flow path. The nozzle has a first member and a second member provided below the first member with a space left between the first member and the second member, wherein the orifice is defined by the first member and the second member. A clamp for restraining the orifice from being enlarged by the pressure of the fluid passing through the orifice is provided on the nozzle.
摘要翻译： 金属粉末生产设备包括用于供应熔融金属的供应部分和设置在供应部分下方的喷嘴。 喷嘴设置有从供给部供给的熔融金属能够通过的流路，该流路具有内径逐渐减小的逐渐减小的内径部。 喷嘴还设置有在流动路径的底端处开口并适于朝向流动路径注入流体的孔口。 喷嘴具有第一构件和第二构件，第二构件设置在第一构件下方，在第一构件和第二构件之间留有空间，其中孔由第一构件和第二构件限定。 在喷嘴上设置有用于限制孔口被通过孔口的流体的压力扩大的夹具。
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公开(公告)号：US20070138312A1
公开(公告)日：2007-06-21
申请号：US11641522
申请日：2006-12-19
IPC分类号： B05B17/04
CPC分类号： B22F9/082
摘要： A metal powder production apparatus includes a nozzle having a first member and a second member by which an orifice for injecting water is defined. A first groove portion and a first easy-to-deform portion are formed in the first member and a second groove portion and a second easy-to-deform portion are formed in the second member. The nozzle is configured to ensure that the first member and the second member are deformed by the pressure of the water passing between the first member and the second member, whereby the orifice can be restrained from being enlarged by the pressure of the water passing through the orifice.
摘要翻译： 金属粉末制造装置包括具有第一构件和第二构件的喷嘴，通过该喷嘴形成用于喷射水的孔口。 在第一构件中形成有第一槽部和第一易变形部，并且在第二构件中形成有第二槽部和第二易变形部。 喷嘴构造成通过在第一构件和第二构件之间通过的水的压力来确保第一构件和第二构件变形，由此可以通过穿过第二构件的水的压力来限制孔口的扩大 孔。
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公开(公告)号：US06254661B1
公开(公告)日：2001-07-03
申请号：US09284134
申请日：1998-04-13
申请人： Tohru Takeda , Yoshinari Tanaka , Masami Sasaki , Tokihiro Shimura , Koei Nakabayashi , Hiroyuki Azuma , Hideo Abo , Toshio Takakura , Yoshiyuki Kato
发明人： Tohru Takeda , Yoshinari Tanaka , Masami Sasaki , Tokihiro Shimura , Koei Nakabayashi , Hiroyuki Azuma , Hideo Abo , Toshio Takakura , Yoshiyuki Kato
IPC分类号： B22F908
CPC分类号： B22F9/082 , B22F2009/088
摘要： An atomizing method for producing metal powder, including splitting molten metal in the vicinity of an exit of a nozzle by introducing the molten metal into a center of the nozzle, wherein gas is flowing through the nozzle. The split molten metal is then further split into fine particles by liquid ejected in an inverse cone shaped flow from a slit surrounding a lower side of the nozzle. The resulting powder is of fine size and spherical or granular shape, and is suitable for metal injection shaping.
摘要翻译： 一种用于制造金属粉末的雾化方法，包括通过将熔融金属引入喷嘴的中心而在喷嘴的出口附近分离熔融金属，其中气体流过喷嘴。 然后通过从围绕喷嘴下侧的狭缝以反锥形流喷射的液体将裂开的熔融金属进一步分成细颗粒。 所得粉末具有细小的尺寸和球形或颗粒形状，适用于金属注射成型。
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公开(公告)号：US07988759B2
公开(公告)日：2011-08-02
申请号：US12915416
申请日：2010-10-29
申请人： Tokihiro Shimura
发明人： Tokihiro Shimura
IPC分类号： B22F9/06
CPC分类号： B22F9/082 , B22F2998/00 , B22F9/002
摘要： A method of producing metal powder using a nozzle including a flow path and an orifice includes: storing molten metal in a supply part; passing the molten metal through a tubular member below the supply part and injecting the molten metal from a bottom end of the tubular member into the flow path; subjecting the molten metal to primary breakup via depressurization inside the flow path to yield liquid droplets; and subjecting the liquid droplets to secondary breakup via contact with fluid injected from the orifice to yield further fine shapes, and solidifying them by cooling to obtain the metal powder, wherein the orifice opens toward a bottom end of the flow path, and the depressurization inside the flow path is generated by a stream of the fluid injected from the orifice into the flow path.
摘要翻译： 使用包括流路和孔口的喷嘴生产金属粉末的方法包括：将熔融金属储存在供应部分中; 使熔融金属通过供给部件下方的管状部件，并将熔融金属从管状部件的底端注入流路; 使熔融金属通过流路内的减压进行初次分解，得到液滴; 并且通过与从孔口注入的流体接触而使液滴二次破裂，以产生更细的形状，并通过冷却使其固化以获得金属粉末，其中孔口朝向流动路径的底端开口，并且内部的减压 流动路径由从孔口注入流路的流体流产生。
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公开(公告)号：US07578961B2
公开(公告)日：2009-08-25
申请号：US11708121
申请日：2007-02-16
申请人： Tokihiro Shimura
发明人： Tokihiro Shimura
IPC分类号： C21C1/00
CPC分类号： B22F9/082 , B22F2998/00 , B22F9/002
摘要： A metal powder production apparatus is capable of efficiently producing fine metal powder with a uniform particle size. The metal powder produced by the apparatus has an increased quality. The apparatus (atomizer) makes use of an atomizing method to pulverize molten metal into metal powder. The apparatus includes a supply part (tundish) for supplying the molten metal, a nozzle provided below the supply part, a tubular member provided between the supply part and the nozzle. The tubular member is constructed to ensure that the molten metal ejected from an ejection port passes through a bore of the tubular member and then makes contact with a fluid jet. Further, the tubular member has a top end air-tightly connected to the supply part and a bottom end lying around the midway of a first flow path through which the molten metal passes.
摘要翻译： 金属粉末制造装置能够有效地制造均匀粒径的细金属粉末。 由该装置制造的金属粉末具有提高的质量。 该装置（雾化器）利用雾化方法将熔融金属粉碎成金属粉末。 该设备包括用于供应熔融金属的供应部分（中间包），设置在供应部分下方的喷嘴，设置在供应部分和喷嘴之间的管状部件。 管状构件被构造成确保从喷射口喷出的熔融金属通过管状构件的孔，然后与流体射流接触。 此外，管状构件具有气密地连接到供应部分的顶端和位于熔融金属通过的第一流动路径中途的底端。
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