公开(公告)号：US20240167135A1

公开(公告)日：2024-05-23

申请号：US18280419

申请日：2023-06-30

Applicant: SHANGHAI JIAOTONG UNIVERSITY

Inventor： Yujie WANG ,  Bo MAO ,  Jiao ZHANG ,  Baode SUN ,  Qing DONG ,  Jiangbo YANG ,  Haitao JIANG

IPC: C22C38/36 ,  B22D17/20 ,  C21D1/19 ,  C21D1/58 ,  C21D1/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24

CPC classification number: C22C38/36 ,  B22D17/2023 ,  C21D1/19 ,  C21D1/58 ,  C21D1/60 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24

Abstract: The present disclosure provides a carbide refining method of a high-carbon high-alloy steel. The carbide refining method of a high-carbon high-alloy steel includes the following steps: formulating a raw material according to chemical element compositions of the high-carbon high-alloy steel, and smelting to obtain a high-carbon high-alloy molten steel; performing an overheat treatment on the high-carbon high-alloy molten steel to Tm+(50˜100)° C., to obtain a high-carbon high-alloy melt, and making the high-carbon high-alloy melt to be deposited in a preset water-cooled copper mold at a speed of 30˜160 g/s by an inert gas, to obtain a high-carbon high-alloy billet through solidification molding; and performing a heat treatment process on the high-carbon high-alloy billet.

公开(公告)号：US20230314349A1

公开(公告)日：2023-10-05

申请号：US18017001

申请日：2021-06-11

Applicant: SHANGHAI JIAOTONG UNIVERSITY

Inventor： Jiao ZHANG ,  Yang TANG ,  Ya ZHANG ,  Yue WU ,  Hui XING ,  Baode SUN ,  Yanfeng HAN ,  Yongbing DAI ,  Chaopeng FU ,  Qing DONG

IPC: G01N23/207 ,  G01T1/20 ,  G01N23/20033 ,  G01N23/223 ,  G01J5/061

CPC classification number: G01N23/2076 ,  G01T1/20187 ,  G01N23/20033 ,  G01N23/223 ,  G01J5/061 ,  G01J2005/0077

Abstract: A multi-physical field measurement device for a metal solidification process and a housing and a measurement method thereof are provided. The device includes: a sealed housing provided with a light-through hole; a heater provided inside the housing and located behind the light-through hole along an X-ray; a diffraction detector used for receiving the X-ray which penetrates through a sample sheet and is scattered; a CMOS camera located behind the heater along the X-ray (11) and used for receiving a visible light signal which penetrates through the sample sheet; a silicon drift X-ray detector located at one side of the X-ray and used for receiving a fluorescent signal sent by interaction between the X-ray and the sample piece sheet; and an infrared thermal imager located at the other side of the X-ray and used for receiving an infrared signal sent by the sample sheet.

公开(公告)号：US20210362224A1

公开(公告)日：2021-11-25

申请号：US17285153

申请日：2018-11-07

Applicant: SHANGHAI JIAOTONG UNIVERSITY

Inventor： Jiao ZHANG ,  Baode SUN ,  Qing DONG

IPC: B22D23/00 ,  B22D21/04 ,  B22D21/00 ,  B22D27/04 ,  B22D27/15 ,  B22D41/015 ,  B22D41/08 ,  B22D7/06

Abstract: 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.