Patents by Inventor Weimin Long

Weimin Long has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12109652
    Abstract: A copper-tin brazing wire and a preparation method and use thereof are provided. A copper-tin brazing wire includes a plurality of copper wires each having a composite metal layer on a surface thereof; the copper-tin brazing wire includes, in parts by weight, 75-84 parts of Cu, 20-25 parts of Sn, and 0.4-0.5 parts of P; and the composite metal layer includes Cu, Sn, and P, in which a mass ratio of Cu, Sn, and P is (45-55):(46-56):(0.5-1.5).
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: October 8, 2024
    Assignee: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
    Inventors: Weimin Long, Sujuan Zhong, Yinyin Pei, Junlan Huang, Quanbin Lu, Yongtao Jiu, Xusheng Zhou, Mengjie Nie
  • Publication number: 20240139847
    Abstract: A brazing joint, a brazing method, and a device for promoting solder rheology and gas overflow are provided. The brazing joint includes a first base metal, a second base metal, and a brazing seam located therebetween. The brazing seam is formed by filling a solder in a gap formed by welding surfaces of the first and the second base metal and melting it to connect the first and the second base metal. The brazing seam is a concave-shaped brazing seam. The gap defines a first distance and a second distance, the first distance is located at an edge of the gap, the second distance is located at the edge or an inside of the gap, the first distance is greater than the second distance, and a curved surface is formed between the location of the first distance and the location of the second distance for transition.
    Type: Application
    Filed: December 9, 2022
    Publication date: May 2, 2024
    Applicants: CHINA ACADEMY OF MACHINERY NINGBO ACADEMY OF INTELLIGENT MACHINE TOOL CO., LTD., ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
    Inventors: Weimin LONG, Xiaoguo SONG, Sujuan ZHONG, Lianhui JIA, Limei JIN, Yucan FU, Yongqiang WEI, Yuchang WANG, Guoqin HUANG, Lei ZHANG, Long FU
  • Publication number: 20240068069
    Abstract: Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor, and system thereof are provided. A preparation method for the copper-tin-nickel brazing material includes the following steps: (a) spreading nano-SiO2 on the bottom of crucible and then adding a crude copper-tin-iron-nickel alloy recycled from E-waste; (b) heating the crucible to melt the crude alloy into a metal liquid so that Zn and Pb in the metal liquid react with the SiO2 to form a slag that floats out; (c) introducing a refining gas to the bottom of metal liquid in step (b), thereby removing the scums or gases formed by Pb, Fe, S, and O in the metal liquid; (d) performing heat-preserving directional solidification on the metal liquid, to bias-aggregate the Fe and Sb at one end and remove the same to obtain a copper-based intermediate alloy; and smelting and powdering the copper-based intermediate alloy.
    Type: Application
    Filed: August 29, 2023
    Publication date: February 29, 2024
    Inventors: Weimin LONG, Tianran DING, Sujuan ZHONG, Li BAO, Junlan HUANG, Jiao YANG, Yuanyuan DONG, Hangyan XUE, Yanhong GUO
  • Patent number: 11845146
    Abstract: A brazing wire includes a brazing tube having an inner cavity and a flux filled in the inner cavity. A trench is provided on an outer peripheral surface of the brazing tube, and the trench extends along an axis of the brazing tube or spirally extends around the axis. A forming mold of the brazing wire includes a mold body having a molding cavity therein. An inner wall of the molding cavity is provided with a protrusion. When the brazing wire passes through the forming mold, the protrusion is used to form the trench. The forming method of the brazing wire includes the following steps. The brazing tube passes through the forming mold, and the trench is formed on the outer peripheral surface of the brazing tube by the protrusion. The trench extends along the axis of the brazing tube or spirally extends around the axis.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: December 19, 2023
    Assignee: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
    Inventors: Sujuan Zhong, Weimin Long, Yinyin Pei, Lei Zhang, Xiupeng Li, Yuanxun Shen, Yunyue Li, Luyi Wang
  • Publication number: 20230398645
    Abstract: A braze coating material with a nickel core and a coating, a preparation method thereof, and a braze coating method are provided. The braze coating material with a nickel core and a coating requires no binder and has strong adhesion ability, and includes the nickel core, a coating layer, a hardened layer, and a protective layer sequentially from inside to outside. The nickel core is metallic nickel having a surface subjected to a roughening treatment. The coating layer is a first brazing flux layer including hard particles, a first brazing flux, and a brazing filler metal powder. The hardened layer contains a second brazing flux and is covered with the protective layer mainly composed of a silicate.
    Type: Application
    Filed: February 14, 2023
    Publication date: December 14, 2023
    Inventors: Weimin LONG, Guanxing ZHANG, Yong LI, Yongtao JIU, Yinyin PEI, Junlan HUANG, Hongwei DONG, Hangyan XUE
  • Publication number: 20230373036
    Abstract: A copper-tin brazing wire and a preparation method and use thereof are provided. A copper-tin brazing wire includes a plurality of copper wires each having a composite metal layer on a surface thereof; the copper-tin brazing wire includes, in parts by weight, 75-84 parts of Cu, 20-25 parts of Sn, and 0.4-0.5 parts of P; and the composite metal layer includes Cu, Sn, and P, in which a mass ratio of Cu, Sn, and P is (45-55):(46-56):(0.5-1.5).
    Type: Application
    Filed: February 14, 2023
    Publication date: November 23, 2023
    Inventors: Weimin LONG, Sujuan ZHONG, Yinyin PEI, Junlan HUANG, Quanbin LU, Yongtao JIU, Xusheng ZHOU, Mengjie NIE
  • Patent number: 11660709
    Abstract: The present disclosure provides a device and method for manufacturing a coated welding rod. The device for manufacturing a coated welding rod includes a grabbing device, a heating device, and a flux storage device. The heating device is configured to heat a welding rod in the grabbing device. A flux in granular form is stored in the flux storage device, the grabbing device is configured to transport the heated welding rod into the flux storage device, and the heated welding rod is configured to heat the flux surrounding the welding rod into a viscous glassy state so that the flux in the viscous glassy state adheres to the surface of the welding rod. The heated welding rod enables the granular flux to be formed into a viscous glassy state so that the flux can be adhered directly to the surface of the welding rod.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: May 30, 2023
    Inventors: Weimin Long, Sujuan Zhong, Hongwei Dong, Lei Zhang, Yinyin Pei, Guanxing Zhang, Yafang Cheng, Kun Zhu
  • Patent number: 11534873
    Abstract: A self-shielded flux-cored welding wire with a special protective slag coating formed in situ and a manufacture method thereof. The self-shielded flux-cored welding wire includes a low-carbon steel belt and a flux core powder, the flux core powder is filled in the low-carbon steel belt, the flux core powder includes the following ingredients in percentage by mass: 60-80% glass powder, 2-8% zirconium oxide powder, 0.05-0.85% graphene powder, 2-8% potassium carbonate sodium powder, 1-3% potassium titanate powder, 2-5% rutile powder, 1-5% corundum powder, 1-3% sodium fluorosilicate powder, and the balance of iron powder, and a weight of the flux core powder accounts for 13-25% of a total weight of the welding wire.
    Type: Grant
    Filed: August 8, 2020
    Date of Patent: December 27, 2022
    Assignees: HEFEI UNIVERSITY OF TECHNOLOGY, CHINA INNOVATION ACADEMY OF INTELLIGENT EQUIPMENT (NINGBO) CO., LTD.
    Inventors: Dashuang Liu, Weimin Long, Yucheng Wu, Ping Wei, Huawei Sun, Yafang Cheng
  • Publication number: 20220339743
    Abstract: A brazing wire includes a brazing tube having an inner cavity and a flux filled in the inner cavity. A trench is provided on an outer peripheral surface of the brazing tube, and the trench extends along an axis of the brazing tube or spirally extends around the axis. A forming mold of the brazing wire includes a mold body having a molding cavity therein. An inner wall of the molding cavity is provided with a protrusion. When the brazing wire passes through the forming mold, the protrusion is used to form the trench. The forming method of the brazing wire includes the following steps. The brazing tube passes through the forming mold, and the trench is formed on the outer peripheral surface of the brazing tube by the protrusion. The trench extends along the axis of the brazing tube or spirally extends around the axis.
    Type: Application
    Filed: August 26, 2021
    Publication date: October 27, 2022
    Applicant: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
    Inventors: Sujuan ZHONG, Weimin LONG, Yinyin PEI, Lei ZHANG, Xiupeng LI, Yuanxun SHEN, Yunyue LI, Luyi WANG
  • Publication number: 20220063025
    Abstract: The present disclosure provides a device and method for manufacturing a coated welding rod. The device for manufacturing a coated welding rod includes a grabbing device, a heating device, and a flux storage device. The heating device is configured to heat a welding rod in the grabbing device. A flux in granular form is stored in the flux storage device, the grabbing device is configured to transport the heated welding rod into the flux storage device, and the heated welding rod is configured to heat the flux surrounding the welding rod into a viscous glassy state so that the flux in the viscous glassy state adheres to the surface of the welding rod. The heated welding rod enables the granular flux to be formed into a viscous glassy state so that the flux can be adhered directly to the surface of the welding rod.
    Type: Application
    Filed: June 8, 2020
    Publication date: March 3, 2022
    Inventors: Weimin LONG, Sujuan ZHONG, Hongwei DONG, Lei ZHANG, Yinyin PEI, Guanzing ZHANG, Yafang CHENG, Kun ZHU
  • Patent number: 10987747
    Abstract: A brazing material outer coat and a method for preparing the same, an in-situ synthetic metal-coated flux-cored silver brazing material and a method for preparing the same, a welding method and a joint body, wherein the in-situ synthetic metal-coated flux-cored silver brazing material comprises a flux core and a brazing material outer coat wrapping the flux core, the brazing material outer coat comprises, in percentage by weight: silver Ag 20.0˜36.0%, copper Cu 35.0˜45.0%, zinc Zn 27.0˜37.0%, tin Sn 1.0˜3.0%, phosphorus P 0.1%˜0.5%, nickel Ni 0.5˜2.0%, germanium Ge 0.1˜0.3%, and lithium Li 0.1˜0.3%, the flux core comprises, in percentage by weight: elemental boron micropowder 5.0˜10.0%, sodium borohydride 5.0˜10.0%, potassium fluoroborate 15.0˜30.0%, boric anhydride 25.0˜40.0%, sodium fluoride 10.0˜30.0%, sodium bifluoride 2.0˜4.0%, and copper sulfate 1.0˜5.0%.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: April 27, 2021
    Assignee: ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD.
    Inventors: Weimin Long, Sujuan Zhong, Quanbin Lu, Yinyin Pei, Peng He, Dezhi Wang, Jia Ma, Huawei Sun, Yongtao Jiu, Qi Wang
  • Publication number: 20200368853
    Abstract: A self-shielded flux-cored welding wire with a special protective slag coating formed in situ and a manufacture method thereof. The self-shielded flux-cored welding wire includes a low-carbon steel belt and a flux core powder, the flux core powder is filled in the low-carbon steel belt, the flux core powder includes the following ingredients in percentage by mass: 60-80% glass powder, 2-8% zirconium oxide powder, 0.05-0.85% graphene powder, 2-8% potassium carbonate sodium powder, 1-3% potassium titanate powder, 2-5% rutile powder, 1-5% corundum powder, 1-3% sodium fluorosilicate powder, and the balance of iron powder, and a weight of the flux core powder accounts for 13-25% of a total weight of the welding wire.
    Type: Application
    Filed: August 8, 2020
    Publication date: November 26, 2020
    Inventors: Dashuang LIU, Ping WEI, Weimin LONG, Mingfang WU, Jiayou WANG, Huawei SUN, Yafang CHENG
  • Publication number: 20200261995
    Abstract: A brazing material outer coat and a method for preparing the same, an in-situ synthetic metal-coated flux-cored silver brazing material and a method for preparing the same, a welding method and a joint body, wherein the in-situ synthetic metal-coated flux-cored silver brazing material comprises a flux core and a brazing material outer coat wrapping the flux core, the brazing material outer coat comprises, in percentage by weight: silver Ag 20.0˜36.0%, copper Cu 35.0˜45.0%, zinc Zn 27.0˜37.0%, tin Sn 1.0˜3.0%, phosphorus P 0.1%˜0.5%, nickel Ni 0.5˜2.0%, germanium Ge 0.1˜0.3%, and lithium Li 0.1˜0.3%, the flux core comprises, in percentage by weight: elemental boron micropowder 5.0˜10.0%, sodium borohydride 5.0˜10.0%, potassium fluoroborate 15.0˜30.0%, boric anhydride 25.0˜40.0%, sodium fluoride 10.0˜30.0%, sodium bifluoride 2.0˜4.0%, and copper sulfate 1.0˜5.0%.
    Type: Application
    Filed: December 19, 2017
    Publication date: August 20, 2020
    Inventors: Weimin LONG, Sujuan ZHONG, Quanbin LU, Yinyin PEI, Peng HE, Dezhi WANG, Jia MA, Huawei SUN, Yongtao JIU, Qi WANG
  • Patent number: 10610978
    Abstract: It discloses a high-efficient energy-saving and surfacing layer well-forming self-shielded flux-cored welding wire. A low-carbon steel strip is used as an outer cover, and a flux core comprises the following components in percentage by mass: 42-60% high carbon ferrochrome with a particle size of 80 meshes, 10-18% ferrosilicon, 16-25% ferroboron, 2-8% rare earth silicon, 2-8% graphite, 1-4% aluminum magnesium alloy, 2-5% manganese powder and the balance of iron powder, wherein the graphite, the aluminum magnesium alloy and the manganese powder are all added with two particle sizes including 60 meshes and 200 meshes, and the weight of the flux core powder accounts for 49-53% of the total weight of the welding wire.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: April 7, 2020
    Assignees: JIANGSU UNIVERSITY OF SCIENCE AND TECHNOLOGY, China (Ningbo) Innovation Academy of Intelligent Equipment Co., Ltd., Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.
    Inventors: Dashuang Liu, Weimin Long, Ping Wei, Mingfang Wu, Lei Zhang