公开(公告)号：US20220118543A1

公开(公告)日：2022-04-21

申请号：US17132059

申请日：2020-12-23

申请人： Dalian University of Technology ,  Ningbo Institute of Dalian University of Technology

发明人： Yubo ZHANG ,  Tingju LI ,  Jinchuan JIE ,  Shipeng YUE ,  Shichao LIU ,  Tongmin WANG ,  Zhiqiang CAO ,  Yiping LU ,  Huijun KANG ,  Zongning CHEN ,  Enyu GUO

IPC分类号： B23K9/23 ,  B23K35/02 ,  B23K35/30 ,  C22C9/00 ,  C22F1/08 ,  B23K9/235

摘要： The present disclosure relates to the technical field of dissimilar welding of Cu and a steel, and in particular to a welding wire for dissimilar welding of Cu and a steel and a preparation method thereof and a method for welding Cu and a steel. The present disclosure provides a welding wire for dissimilar welding of Cu and a steel, including, in percentages by mass, 5-25% of iron phase, less than 0.1% of inevitable impurities, and copper matrix. The welding wire of the present disclosure, containing two elements, i.e. copper and iron, is conducive to the mixing of the two phases—copper and iron—during the welding process, to form a mutual soluble region, thereby makes it possible to greatly increase the weldability, reduce the width of the weld, effectively overcome the tendency of cracks, and thus to ensure the formed weld with a high crack resistance.

公开(公告)号：US20240316623A1

公开(公告)日：2024-09-26

申请号：US18609361

申请日：2024-03-19

申请人： Dalian University of Technology ,  NingBo Institute of Dalian University of Technology

发明人： Bin YA ,  Xingguo ZHANG ,  Linggang MENG ,  Bingwen ZHOU ,  Changzhi SHAN ,  Yunfeng LIU

IPC分类号： B22D11/114 ,  B22D11/00

CPC分类号： B22D11/114 ,  B22D11/003

摘要： A device for improving quality of aluminum alloy horizontal continuous casting billet by applying ultrasonic treatment is provided, including an ultrasonic generator, an ultrasonic transducer, an amplitude transformer, a holding furnace, an ultrasonic probe and a traction device. The ultrasonic generator is electrically connected with the ultrasonic transducer; the ultrasonic transducer is threadedly connected with the ultrasonic probe through the amplitude transformer, and the ultrasonic probe is placed in the holding furnace; a communication opening is formed at a bottom of the holding furnace, and the traction device is installed at the communication opening; the holding furnace is further poured with metal liquid.

公开(公告)号：US12013498B1

公开(公告)日：2024-06-18

申请号：US18402692

申请日：2024-01-02

申请人： Ningbo Institute of Dalian University of Technology ,  Dalian University of Technology

发明人： Huiyong Liang ,  Jiafei Zhao ,  Xin Lv ,  Yongchen Song ,  Jiawei Chu ,  Shi Shen ,  Lei Yang ,  Xingyu Lu ,  Linan Zhao ,  Shuangqing Zhang

IPC分类号： G01N29/00 ,  F17D5/00 ,  G01S7/521 ,  G01S15/88

CPC分类号： G01S7/521 ,  F17D5/005 ,  G01S15/88

摘要： A low-frequency acoustic wave generating device for detecting pipeline blockage related to the technical field of pipeline detection is provided and includes a sealing shell configured to be communicated with a pipeline, a sealed pressure environment is formed inside the sealing shell. A low-frequency electroacoustic transducer is disposed inside the sealing shell, the low-frequency electroacoustic transducer is connected to a signal generator and is configured to transmit an acoustic wave into the pipeline. The device transmits the acoustic wave signals to a high-pressure gas pipeline, combined with a signal generator capable of generating any waveform, thereby emitting any waveform of acoustic wave signal into the pipeline. The use of acoustic waves with special markings and characteristics for pipeline blockage detection can improve the anti-noise interference ability of the acoustic wave detection, and improve the precision of the detection.