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11.发明公开公开(公告)号：US20230211406A1
公开(公告)日：2023-07-06
申请号：US17568047
申请日：2022-01-04
摘要： A system and method of increasing a cooling rate of a metal sand casting during solidification. The system includes a 3-D printed manufactured sand mold defining a mold cavity, a coolant inlet port extending into the manufactured sand mold, a myriad of coolant passageways surrounding a portion of the mold cavity, and a coolant outlet port in fluid communication with the coolant passageways. The system further includes a coolant vapor extraction system having a collection manifold in fluid connection with the outlet port of the sand mold. A molten metal is poured into the mold cavity and a liquid coolant is introduced into the sand mold. The liquid coolant changes state into a gas phase as it permeates through the sand mold, thereby increasing the cooling rate of the casting. The liquid coolant may be that of a liquid nitrogen.
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公开(公告)号：US11642719B1
公开(公告)日：2023-05-09
申请号：US17644911
申请日：2021-12-17
CPC分类号： B22C9/065 , B22C9/10 , B22D29/005
摘要： A hybrid casting process for structural components uses a re-usable metallic mold rather than a sand mold to produce more consistent cast components. The hybrid casting process uses a metallic mold coupled to a core mold to produce the near net shape of the cast component. Machining operations are performed on the near net shape cast component to produce a final component that meets tolerances and other specifications of the structural component.
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公开(公告)号：US20220410254A1
公开(公告)日：2022-12-29
申请号：US17756288
申请日：2020-11-13
摘要： A foundry mold includes at least one molding cavity and one pair of feeder arms. The molding cavity extends, along a horizontal axis, from a first end to a second end, and the first pair of feeder arms comprises a first feeder arm, oriented in a substantially vertical direction and connected to the first end of the first molding cavity, and a second feeder arm, substantially parallel to the first feeder arm and connected to the second end of the first molding cavity.
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公开(公告)号：US20220275467A1
公开(公告)日：2022-09-01
申请号：US17664429
申请日：2022-05-23
发明人： Masayuki ITAMURA , Haruki ITOFUJI , Mitsuru ADACHI
摘要： The present invention provides a casting method and cast product of spherical graphite cast iron, in which, even with a small modulus, there is no chill, the spherical graphite in the tissue is further made ultrafine, the dispersion of the particle diameter is small, and the number of the particles is several times that of the conventional one in the as cast state where heat treatment is not carried out.
A casting method of a spherical graphite cast iron comprised from, a melting process, a spheroidizing treatment process, an inoculation process, and a casting process, in which the original molten metal after the inoculation process is poured and filled up to a product space through a gate of a metal mold; wherein the original molten metal before being filled up to the product space is controlled to a semi-solidification temperature range. An amount of nitrogen at the time of melting of the (cast iron?) is controlled to 0.9 ppm (mass) or less. The casting process is carried out by controlling the pouring temperature and the heat removal amount from the molten metal so that the temperature of the raw material when passing through the gate becomes a substantially constant temperature between an eutectic temperature and a liquidus temperature.-
公开(公告)号：US11235379B2
公开(公告)日：2022-02-01
申请号：US16627060
申请日：2018-06-29
摘要： The invention relates to the foundry field, and in particular to a foundry process comprising the preheating of a mold (1) up to a first temperature, the casting of a metal in the liquid state, at a second temperature above the first temperature, in the mold kept in a main furnace (100) at the first temperature since the preheating, the difference between the first temperature and second temperature being no more than 80° C., the cooling and solidification of the metal in the mold (1) kept in the main furnace (100) at a pressure of less than 0.1 Pa at least since the casting, the removal of the mold (1) from the main furnace (100), and the demolding of the solidified metal.
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公开(公告)号：US11198175B2
公开(公告)日：2021-12-14
申请号：US17062035
申请日：2020-10-02
摘要： A casting method includes: forming a seed, the seed having a first end and a second end, the forming including bending a seed precursor; placing the seed second end in contact or spaced facing relation with a chill plate; contacting the first end with molten material; and cooling and solidifying the molten material so that a crystalline structure of the seed propagates into the solidifying material. The forming further included reducing a thickness of the seed proximate the first end relative to a thickness of the seed proximate the second end.
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公开(公告)号：US20210362224A1
公开(公告)日：2021-11-25
申请号：US17285153
申请日：2018-11-07
发明人： Jiao ZHANG , Baode SUN , Qing DONG
IPC分类号： B22D23/00 , B22D21/04 , B22D21/00 , B22D27/04 , B22D27/15 , B22D41/015 , B22D41/08 , B22D7/06
摘要： A method and apparatus for manufacturing an equiaxed crystal aluminum alloy cast ingot by using additive manufacturing and rapid solidification techniques are provided. The apparatus comprises: a metal heating mechanism and a negative pressure cooling mechanism. The metal heating mechanism is located above the negative pressure cooling mechanism and is connected thereto by a nozzle. The negative pressure cooling mechanism comprises a vacuum chamber having an air inlet hole and an air outlet hole, and a three-dimensional moving ingot mechanism disposed inside the vacuum chamber. The three-dimensional moving ingot mechanism comprises a moving ingot and a two-dimensional moving platform vertically connected to the moving ingot. A water cooling mechanism is disposed outside the moving ingot, and the moving ingot is driven by a precision motor to precisely move up and down.
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公开(公告)号：US11168382B2
公开(公告)日：2021-11-09
申请号：US16067755
申请日：2017-01-17
摘要： A sliding contact material that is used for a constituent material, particularly a brush, of a motor. The sliding contact material includes: Pd in an amount of 20.0% by mass or more and 50.0% by mass or less; Ni and/or Co in an amount of 0.6% by mass or more and 3.0% by mass or less in terms of a total concentration; and Ag and inevitable impurities as a balance. Preferably, the sliding contact material further contains an additive element M including at least one of Sn and In, and the total concentration of the additive element M is 0.1% by mass or more and 3.0% by mass or less. When containing the additive element M, the sliding contact material has material structures in which composite dispersed particles containing an intermetallic compound of Pd and the additive element M are dispersed in an Ag alloy matrix, and the ratio (KPd/KM) of the content (% by mass) of Pd and the content (% by mass) of the additive element M in the composite dispersed particles is within a range of 2.4 or more and 3.6 or less.
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公开(公告)号：US11123791B2
公开(公告)日：2021-09-21
申请号：US15996091
申请日：2018-06-01
摘要： A method for casting a part, that includes the steps of: introducing a mold into a first housing; engaging the first housing with a second housing to define a second chamber; melting an ingot within the furnace; reducing pressure within the second chamber to a first predetermined pressure; pouring at least a portion of the melted ingot into the mold; adding an gas to the second chamber to raise the pressure to a second predetermined pressure; moving the mold such that it is engaged with the means for cooling; and solidifying the liquid metal within the mold.
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公开(公告)号：US11084089B2
公开(公告)日：2021-08-10
申请号：US16600572
申请日：2019-10-14
发明人： Chae Hong Jeon
摘要： A method of manufacturing a wing element that is provided inside a gas turbine and through which a fluid passes and a method of manufacturing a blade are provided. The method of manufacturing the wing element includes preforming the wing element; disposing the wing element inside a mold; sequentially melting the wing element inside the mold along one direction using a heating device; and solidifying the melted wing element using a cooling device.
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