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公开(公告)号：US20230278095A1
公开(公告)日：2023-09-07
申请号：US17685105
申请日：2022-03-02
申请人： Qingyou Han
发明人： Qingyou Han , Jianhua Wu , Dashan Sui
摘要： A process for high integrity castings of metals and their alloys includes the steps of providing at least a sand mold at desired elevated temperatures, delivering a molten metal into the mold, and supplying a predetermined amount of coolant to contact the surfaces of the casting at desired rates, times, and durations to achieve an acceptable level of progressive solidification from the distal end of the casting towards the riser until the casting has reached desired temperatures.
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公开(公告)号：US11597008B2
公开(公告)日：2023-03-07
申请号：US16933006
申请日：2020-07-20
申请人： Qingyou Han
发明人： Qingyou Han
摘要： A process of reducing internal defects or enhancing mechanical properties in local regions in a casting utilizes the combined effect of compression, high-intensity ultrasound, heat, and feeding using extra material on improving the local microstructure. A modified version of the process can be used for accelerating the creep age forming process.
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公开(公告)号：US20220017993A1
公开(公告)日：2022-01-20
申请号：US16932068
申请日：2020-07-17
申请人： Qingyou Han
发明人： Qingyou Han
IPC分类号： C22C1/00 , B22D11/00 , B22D27/08 , B22D11/112 , B22D11/114
摘要： A method and apparatus for producing solid alloy components from its liquid state are provided. The molten alloy is rapidly cooled using a chill to temperatures below the thermosolutal transition temperature of the alloy. Finite-amplitude acoustic vibration is applied on the chill to shake off dendrites that form on the chill surface, to stir the slurry containing the fragments of dendrites, and to shake off slurry material that sticks on the surface of the chill as the chill is separating from the slurry. The slurry is then immediately poured into a chamber of a forming machine or a mold cavity shaped into solid components.
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公开(公告)号：US20240335902A1
公开(公告)日：2024-10-10
申请号：US18744560
申请日：2024-06-14
申请人： Qingyou Han
发明人： Qingyou Han
CPC分类号： B23K20/106 , B23K31/02
摘要： Methods of ultrasound assisted 3D printing and welding involve the use of an ultrasonic sonotrode placed in on top of the solidified layer in the vicinity of a melt pool. The sonotrode, pressed against the solidified materials at the edge of the melt pool, is synchronized with the heat source such that it travels side-by-side with the melt pool to transmit ultrasonic vibrations to the solidifying melt pool, reducing hot tearing and porosity formation, and to consolidate the solidified materials under the sonotrode. The methods of the present invention are capable of making a large variety of commercially important alloys 3D printable and weldable.
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5.发明公开公开(公告)号：US20240286188A1
公开(公告)日：2024-08-29
申请号：US18660447
申请日：2024-05-10
申请人： Qingyou Han
发明人： Qingyou Han
IPC分类号： B22D17/22 , B22D17/20 , B22D19/00 , B22F7/08 , B32B15/01 , C23C2/06 , C23C2/12 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： B22D17/2209 , B22D17/2023 , B22D17/2245 , B22D17/2263 , B22D19/0009 , B22F7/08 , B32B15/01 , B32B15/011 , B32B15/013 , B32B15/017 , C23C2/06 , C23C2/12 , C23C28/02 , C23C28/32 , C23C28/34 , C23C30/00
摘要： A process of forming a low cost, erosion, oxidation, and wear resistant one-piece composite liner or insert that can be installed into a shot chamber in a die casting machine is provided. The process utilizes a thin inner layer of refractory metal to serve as the working surfaces of a shot chamber. The thin refractory layer is bonded metallurgically to a thick low cost material to form a one-piece liner thick enough to resist thermal distortion during die casting operation. A self-healing erosive wear resistant coating is applied on the working surface of the refractory metal layer. Such a one-piece composite liner is expected to have an improved service life for die casting of corrosive metals and alloys.
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公开(公告)号：US20230158563A1
公开(公告)日：2023-05-25
申请号：US18099966
申请日：2023-01-22
申请人： Qingyou Han
发明人： Qingyou Han
摘要： A process of reducing internal defects or enhancing mechanical properties in local regions in a solidified casting utilizes the combination effect of compression, high-intensity ultrasound, and heat on improving the local microstructure. The casting is brought to predetermined temperatures where plastic deformation in the local regions of the casting is produced under controlled conditions to close voids, breakup oxide films, and refine solidification structure.
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公开(公告)号：US12048962B2
公开(公告)日：2024-07-30
申请号：US16992270
申请日：2020-08-13
申请人： Qingyou Han
发明人： Qingyou Han
CPC分类号： B22D27/08 , B22D17/007 , B22D17/2015 , B22D17/2084 , B22D17/2272
摘要： A method and apparatus for producing semi-solid material castings from its liquid state in a shot chamber of a die casting machine where the liquid material is poured into a shot chamber and rapidly cooled from its liquid state to temperatures below its liquidus. High-intensity ultrasonic vibration is coupled to the plunger, shot plate, or sprue-spreader while the cast material is injected by the plunger to fill the die cavity. The combined action of rapid cooling from the shot chamber, vigorous pushing by the plunger, and radiation of ultrasonic vibration on the cast material in the shot chamber directly turns the initial liquid material directly into a semi-solid slurry by breaking up dendrites and making these dendritic fragments globular. The slurry is then injected into the die cavity to form a casting.
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公开(公告)号：US12017271B2
公开(公告)日：2024-06-25
申请号：US17016570
申请日：2020-09-10
申请人： Qingyou Han
发明人： Qingyou Han
IPC分类号： B22D17/22 , B22D17/20 , B22D19/00 , B22F7/08 , B32B15/01 , C23C2/06 , C23C2/12 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： B22D17/2209 , B22D17/2023 , B22D17/2245 , B22D17/2263 , B22D19/0009 , B22F7/08 , B32B15/01 , B32B15/011 , B32B15/013 , B32B15/017 , C23C2/06 , C23C2/12 , C23C28/02 , C23C28/32 , C23C28/34 , C23C30/00
摘要： A process of forming a low cost, erosion, oxidation, and wear resistant composite liner or insert that can be installed into a shot chamber in a die casting machine is provided. The process utilizes a self-healing erosive wear resistant coating on a liner of refractory metal to serve as the working surfaces of a shot chamber. The refractory liner is bonded to a low cost material so that the liner can be made extremely thin. Such a composite liner is expected to have an improved service life for die casting of corrosive metals and alloys.
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公开(公告)号：US11897028B2
公开(公告)日：2024-02-13
申请号：US16992245
申请日：2020-08-13
申请人： Qingyou Han
发明人： Qingyou Han
CPC分类号： B22D17/2038 , B22C9/02 , B22C9/061 , B22C9/068 , B22D17/2023 , B22D17/2218 , B22D27/04
摘要： A process for the casting of metals and their alloys includes the steps of providing at least a mold equipped with a plurality of cooling nozzles, making a layer of coolant permeable materials covering the nozzles and maintaining the materials at desired temperatures, delivering a molten metal into the mold, supplying predetermined amount of coolant to each nozzles to contact the casting at desired rate, time, and duration to achieve an acceptable level of progressive solidification from the distal end of the casting towards the riser until the casting has reached desired temperatures.
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公开(公告)号：US20230158564A1
公开(公告)日：2023-05-25
申请号：US18100556
申请日：2023-01-23
申请人： Qingyou Han
发明人： Qingyou Han
摘要： A method for accelerating the creep age forming of a metallic component is provided. The method includes the steps of applying static loading and ultrasound vibrations to the local regions on a metallic component during the creep age forming process. The transmission of ultrasound in the component enhances the mobility of dislocations and atoms and thus accelerates the creep deformation in the component.
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