公开(公告)号：US20240367221A1

公开(公告)日：2024-11-07

申请号：US18556167

申请日：2022-07-21

Applicant: University of Science and Technology Beijing

Inventor： Cheng Zhou ,  Dongpo Xuan ,  You Zhou ,  Tianliang Jiang ,  Biji Zhu ,  Wenhao Fan ,  Zhihao Zhang ,  Jianxin Xie

IPC: B22D11/103 ,  B22D11/06

Abstract: A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.

公开(公告)号：US20190054521A1

公开(公告)日：2019-02-21

申请号：US16169570

申请日：2018-10-24

Applicant: University of Science and Technology Beijing

Inventor： Jingyuan Li ,  Mingfan Qi ,  Yulai Chen ,  Huiping Hong ,  Jianxin Xie

IPC: B22D11/16 ,  B22D11/00 ,  B22D11/124 ,  B22D11/22 ,  B22D17/20 ,  B22D25/06 ,  B22D30/00 ,  C22C1/04

Abstract: The present invention belongs to the field of metal processing and fabrication, and particularly relates to an apparatus for high-throughput screw caster of a multi-component gradient metal material from elongate materials, such as multi-component alloy pipes, rods, profiles, and other such materials, having in the lengthwise direction a continuous gradient distribution of chemical components. The apparatus includes an online powder flow-rate regulation system, a rotary feed system, a heating system, a heat insulation system, a motor drive system, a blank forming system and a control system. Due to the adoption of the above technical solution, the apparatus of the present invention is simple in structure, and easy to use and control.

公开(公告)号：US12162065B2

公开(公告)日：2024-12-10

申请号：US18556167

申请日：2022-07-21

Applicant: University of Science and Technology Beijing

Inventor： Cheng Zhou ,  Dongpo Xuan ,  You Zhou ,  Tianliang Jiang ,  Biji Zhu ,  Wenhao Fan ,  Zhihao Zhang ,  Jianxin Xie

IPC: B22D11/103 ,  B22D11/06

Abstract: A thin metal strip continuous casting method using momentum flow distribution, comprising the steps of: adjusting the position of a flow distribution device (2), and starting a double-roller thin strip continuous casting apparatus; molten metal (3) forming a uniform sheet-shaped molten metal flow (4) having an initial momentum after the molten metal (3) passes through the flow distribution device; the sheet-shaped molten metal flow entering a molten pool (5) at a superheat degree of 50-100° C. and an initial velocity of 0.5-2 m/s, wherein the flow distribution device is spaced apart from the molten pool; under the action of the initial velocity of the molten metal and in the molten pool, forming a whirlpool, which is adjacent to surfaces of two cooling rollers and has a momentum stirring action; and completing the solidification of the molten metal under the momentum stirring action of the whirlpool along with the rotation of the two cooling rollers. In the method, a whirlpool, which is adjacent to surfaces of cooling rollers and has a momentum stirring action, is formed in a molten pool by means of the kinetic energy of molten metal, such that equiaxed crystals can be prepared when a superheat degree is as high as 50-100° C., and the proportion of equiaxed crystals can be increased to 100%, thereby refining crystal grains and alleviating segregation.

公开(公告)号：US11752543B2

公开(公告)日：2023-09-12

申请号：US17639901

申请日：2021-11-25

Applicant: University of Science and Technology Beijing

Inventor： Jingyuan Li ,  Shang Dai ,  Chen Cai ,  Mingfan Qi ,  Jinbo Gu ,  Jianxin Xie

IPC: B22D13/02 ,  B22D13/10 ,  B22D13/12 ,  B29C41/04 ,  B29C41/36 ,  B22D13/04 ,  B29C39/08 ,  B29C39/22 ,  C03B19/02

CPC classification number: B22D13/02 ,  B22D13/04 ,  B22D13/107 ,  B22D13/12 ,  B29C39/08 ,  B29C39/22 ,  B29C41/04 ,  B29C41/36 ,  C03B19/02

Abstract: A screw smelting machine melts raw materials with a different chemical ratio in a mixing funnel in a feeding order to prevent the long-range diffusion of a melt, and controls outflow at a suitable speed. A centrifugal casting machine solidifies the melt with the ingredients gradient varying into a radial ingredient gradient material by a centrifugal casting style. A temperature sensor monitors temperature of an outer surface of a centrifuge cavity of the centrifugal casting machine during centrifugal casting, and transmits the temperature to a control platform. The control platform determines an optimal flow rate of the melt at an end of screw rod according to ingredient gradient of ingredient radial-gradient pipe materials and a thickness of each component gradient material required with preparation, in combination with a real-time data fed back from the temperature sensor, and feeds back to a feeding end.

公开(公告)号：US10913110B2

公开(公告)日：2021-02-09

申请号：US16169570

申请日：2018-10-24

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Jingyuan Li ,  Mingfan Qi ,  Yulai Chen ,  Huiping Hong ,  Jianxin Xie

IPC: B22D11/16 ,  B22D25/06 ,  B22D11/114 ,  B29C67/00 ,  B22D11/10 ,  B33Y30/00 ,  B33Y10/00 ,  B33Y70/00 ,  B22D11/00 ,  B22D11/124 ,  B22D11/22 ,  B22D17/20 ,  B22D30/00 ,  C22C1/04

Abstract: An apparatus for a high-throughput screw caster of a multi-component gradient metal material from elongate materials, such as multi-component alloy pipes, rods, profiles, and other such materials, has in the lengthwise direction a continuous gradient distribution of chemical components. The apparatus includes an online powder flow-rate regulation system, a rotary feed system, a heating system, a heat insulation system, a motor drive system, a blank forming system and a control system.