公开(公告)号：US20190232366A1

公开(公告)日：2019-08-01

申请号：US15941838

申请日：2018-03-30

Applicant: Huazhong University of Science and Technology

Inventor： Pan GONG ,  Xinyun WANG ,  Yunfei MA ,  Lei DENG ,  Junsong JIN

IPC: B22F3/00 ,  B22F1/00 ,  B22F3/15 ,  B22F3/10 ,  B33Y10/00 ,  B33Y70/00

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.

公开(公告)号：US20190224753A1

公开(公告)日：2019-07-25

申请号：US15961437

申请日：2018-04-24

Applicant: Huazhong University of Science and Technology

Inventor： Xinyun WANG ,  Pan GONG ,  Yunfei MA ,  Lei DENG ,  Junsong JIN

IPC: B22F3/17 ,  B21J1/00 ,  B21J5/00 ,  B22F1/00

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.