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公开(公告)号：US20200306817A1
公开(公告)日：2020-10-01
申请号：US15779760
申请日：2016-12-01
申请人： HITACHI METALS, LTD.
发明人： Takuya MURAI , Takanori MATSUI , Yuji ISHIWARI , Tomoyoshi KIWAKE
摘要： A method for manufacturing a ring-rolled product, which manufactures the ring-rolled product from a ring material, includes a step of rolling the ring material, which has an operation of rolling the ring material from both inner and outer circumferential sides thereof between a mandrel roll and a main roll in a state of rotating the ring material toward one side in a circumferential direction thereof, and induction-heating the ring material by induction heating elements. An induction heating element is disposed on only an outer circumferential side of the ring material or is disposed on each of both the inner and outer circumferential sides in a region immediately before the rolling, or an inclined portion is provided in an outer-peripheral edge portion of a coil in the induction heating element.
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公开(公告)号：US20220389535A1
公开(公告)日：2022-12-08
申请号：US17776150
申请日：2020-11-26
申请人： HITACHI METALS, LTD.
摘要： Provided is a method for producing a Ni- or Ti-based alloy product, the method capable of locally increasing the cooling rate and effectively cooling. The method includes the steps: preliminarily processing a hot working material of a Ni- or Ti-based alloy after hot working into a predetermined shape; heating and holding the material at a solution treatment temperature to obtain a material held in a heated state; and cooling the material held in a heated state to obtain a solution-treated material. The cooling step includes placing a flow path-forming member having a space for forming a flow path for a fluid on a surface of the material held in a heated state to form a fluid flow path defined by the surface of the material held in a heated state and an inner surface of the space of the flow path-forming member; and allowing a fluid to flow in the fluid flow path so that the fluid in the flow path locally cools a part of the surface of the material held in a heated state.
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公开(公告)号：US20200306818A1
公开(公告)日：2020-10-01
申请号：US15779772
申请日：2016-12-01
申请人： HITACHI METALS, LTD.
发明人： Takuya MURAI , Takanori MATSUI , Yuji ISHIWARI , Tomoyoshi KIWAKE
摘要： A method for manufacturing a ring-rolled product forms the ring-rolled product from a ring material by using a mandrel roll and a main roll. The mandrel roll and the main roll are configured so as to contact inner and outer circumferential surfaces of the ring material, respectively, and are configured so as to press the ring material in a radial direction thereof in a state in which the ring material is rotated in a circumferential direction thereof. The method includes a step of rolling the ring material that includes an operation of induction-heating the main roll by at least one induction heating element and rolling the ring material between the mandrel roll and the main roll, which is induction-heated.
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公开(公告)号：US20220403493A1
公开(公告)日：2022-12-22
申请号：US17776163
申请日：2020-11-26
申请人： HITACHI METALS, LTD.
摘要： Provided is a method for producing a Ni- or Ti-based alloy product, the method capable of reliably locally cooling and effectively cooling. The method includes the steps: heating and holding a hot working material of a Ni- or Ti-based alloy after hot forging or hot ring rolling at a solution treatment temperature to obtain a material held in a heated state, and cooling the material held in a heated state to obtain a solution-treated material. The cooling step includes carrying out local cooling by contacting a cooling member with a part of a surface of the material held in a heated state.
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5.发明申请公开(公告)号：US20200061686A1
公开(公告)日：2020-02-27
申请号：US16500294
申请日：2018-03-28
申请人： HITACHI METALS, LTD.
发明人： Takuya MURAI , Takanori MATSUI , Tomoyoshi KIWAKE
摘要： In a method of cooling a main roll, strength of a shaft and a peripheral portion thereof of the main roll is sufficiently secured, maintenance of the main roll is facilitated, and the shaft and the peripheral portion thereof of the main roll are efficiently cooled. In a method of manufacturing a ring rolled body, a high-quality ring rolled body is produced. The present invention relates to a method of cooing a main roll 1 for ring rolling in a state in which one side, in the rotation axis direction, of the main roll 1 faces upward, and relates to a method of manufacturing a ring rolled body, including the cooling method. In the cooling method, the shaft 11 is cooled by injecting a liquid W into a receiving part 13, 17 which is recessed from an upper end surface 12c of a die 12 of the main roll 1 facing the one side in the rotation axis direction and surrounds the shaft 11 of the main roll 1. In the method of manufacturing a ring rolled body, a ring rolled body is manufactured by heating the die 12 by an induction heating mechanism 6 and cooling the shaft 11 by the cooling method, and further, reducing a ring material M between the main roll 1 and the mandrel 2.
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