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公开(公告)号：US20190232366A1
公开(公告)日：2019-08-01
申请号：US15941838
申请日：2018-03-30
Inventor： Pan GONG , Xinyun WANG , Yunfei MA , Lei DENG , Junsong JIN
CPC classification number: B22F3/006 , B22F1/0011 , B22F1/0062 , B22F3/008 , B22F3/1021 , B22F3/15 , B22F2201/20 , B22F2301/205 , B22F2304/10 , B33Y10/00 , B33Y70/00
Abstract: The invention belongs to the fields of amorphous alloy composites, additive manufacturing technology and hot isostatic pressing sintering forming, and in particular relates to a preparation method of tungsten particle reinforced amorphous matrix composites, comprising the following steps: (1) making tungsten powder and amorphous alloy powder into a preform by the micro-jetting and bonding 3D printing technology, specifically comprising: in the preforming process by micro-jetting and bonding, through a double-drum type powder feeding device, spraying tungsten powder and amorphous alloy powder into a layer of uniformly mixed powder layer by double nozzles, then bonding the powder layer into a bonding layer by the binder, and repeating the operations of spraying the powders and binder, so that a preform with uniform particle phase distribution is finally prepared; (2) placing the preform in a capsule, and performing heating and vacuumizing on the capsule in a heating furnace; and (3) placing the capsule in the hot isostatic pressing sintering furnace and performing hot press forming to obtain an amorphous matrix composite. In the present invention, through combining the cold additive micro-jetting and bonding technology with hot isostatic pressing sintering forming, a tungsten particle reinforced amorphous matrix composite with large size and uniform particle phase distribution can be prepared.
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公开(公告)号：US20190224753A1
公开(公告)日：2019-07-25
申请号：US15961437
申请日：2018-04-24
Inventor： Xinyun WANG , Pan GONG , Yunfei MA , Lei DENG , Junsong JIN
Abstract: The present invention discloses a cold additive and hot forging combined forming method of amorphous alloy parts. The present invention belongs to the field of cold additive manufacturing technology and thermoplastic forming of amorphous alloy, and more particularly relates to a cold additive and hot forging combined forming method of amorphous alloy parts, the method comprising: (1) making amorphous alloy powder into a pre-forging blank by the micro-jetting and bonding 3D printing technology; and (2) placing the pre-forging blank in the step (1) in a closed forging die to perform hot closed-die forging so as to obtain an amorphous alloy part, wherein the contour size and shape of the pre-forging blank are designed according to the contour size and shape of the inner cavity of the closed forging die; and an exhaust hole is provided in the closed forging die such that gas generated by gasification or decomposition of the binder at a hot die forging temperature is discharged through the exhaust hole in the closed forging die. In the present invention, a bulk amorphous alloy part with a large size and a complex shape can be prepared by the cold additive and hot forging combined forming method.
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公开(公告)号：US20230038974A1
公开(公告)日：2023-02-09
申请号：US17616199
申请日：2021-04-06
Inventor： Pan GONG , Huaping DING , Xinyun WANG , Junsong JIN , Lei DENG , Mao ZHANG , Xuefeng TANG
Abstract: The invention belongs to the field of amorphous alloys, and more specifically, relates to a method for calibrating the internal temperature field of amorphous alloy prepared by spark plasma sintering. First, the part required for temperature field calibration inside the bulk amorphous alloy sample obtained by spark plasma sintering is cut into a series of small amorphous alloy samples, and the isothermal crystallization treatment is performed to obtain the crystallization time of different parts of the sample. An annealing-isothermal crystallization experiment is performed on the adopted amorphous alloy powder at different annealing temperatures, and the functional relationship between the annealing temperature and the crystallization time is obtained. The crystallization time of different parts inside the amorphous alloy sample is substituted into this functional relationship, the temperature distribution during the temperature holding stage during the sintering of different parts inside the amorphous alloy sample can be obtained.
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公开(公告)号：US20190232430A1
公开(公告)日：2019-08-01
申请号：US15934405
申请日：2018-03-23
Inventor： Pan GONG , Fangwei LI , Xinyun WANG , Jianhua MO , Lei DENG , Junsong JIN
IPC: B23K26/342 , B23K35/02 , B23K26/142 , C22C45/00 , C22C45/02 , C22C45/10
CPC classification number: B23K26/342 , B23K26/142 , B23K35/0233 , B33Y10/00 , B33Y30/00 , B33Y70/00 , C22C45/001 , C22C45/02 , C22C45/10
Abstract: The invention belongs to the field of additive manufacturing of amorphous alloy, and discloses a laser 3D printing forming system of amorphous alloy foil and a forming method thereof. The unnecessary material of the amorphous alloy foil is cut by a first laser and then the remaining portion is selectively scanned and heated by a second laser so that the amorphous alloy is heated to be in a superplastic state in the supercooled liquid region. Then, the amorphous alloy foil is rolled by a preheated roller in combination with the ultrasonic vibration to achieve interatomic bonding between layers of the amorphous alloy foil, and the amorphous alloy foil is then rapidly cooled, so that an amorphous alloy part with a large size, a complicated shape and a porous structure is formed. The invention has overcome the limitation of the size and shape of the amorphous alloy prepared by the traditional amorphous alloy preparation methods, and uses amorphous alloy foil as a raw material, which has lower cost than the traditional 3D printing amorphous powder. In addition, a roller is used to roll the ultra-thin amorphous alloy foil such that the prepared amorphous alloy part has a more compact internal structure.
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