Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.

Other

Hefei University of Technology

Jiangsu University of Science and Technology

China (Ningbo) Innovation Academy of Intelligent Equipment Co., Ltd.

China Innovation Academy of Intelligent Equipment (Ningbo) Co., Ltd.

Weimin Long

Yinyin Pei

Sujuan Zhong

Lei Zhang

Yongtao Jiu

Junlan Huang

Quanbin Lu

Yafang Cheng

Huawei Sun

Dashuang Liu

Ping Wei

Hangyan Xue

Yucheng Wu

Yong Li

Yuanxun Shen

Guanxing Zhang

Mengjie Nie

Kun Zhu

Jia Ma

Hongwei Dong

Xiupeng Li

Yunyue Li

Peng He

Qi Wang

Luyi Wang

Dezhi Wang

Xusheng Zhou

Mingfang Wu

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.

Braze coating material with nickel core and coating and preparation method and braze coating method thereof

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).

Copper-tin brazing wire and preparation method and use thereof

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.

Brazing wire, forming method of brazing wire and forming mold of brazing wire

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.

Device and method for manufacturing coated welding rod

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.

Self-shielded flux-cored welding wire with special protective slag coating formed in situ and manufacture method thereof

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&#x2dc;36.0%, copper Cu 35.0&#x2dc;45.0%, zinc Zn 27.0&#x2dc;37.0%, tin Sn 1.0&#x2dc;3.0%, phosphorus P 0.1%&#x2dc;0.5%, nickel Ni 0.5&#x2dc;2.0%, germanium Ge 0.1&#x2dc;0.3%, and lithium Li 0.1&#x2dc;0.3%, the flux core comprises, in percentage by weight: elemental boron micropowder 5.0&#x2dc;10.0%, sodium borohydride 5.0&#x2dc;10.0%, potassium fluoroborate 15.0&#x2dc;30.0%, boric anhydride 25.0&#x2dc;40.0%, sodium fluoride 10.0&#x2dc;30.0%, sodium bifluoride 2.0&#x2dc;4.0%, and copper sulfate 1.0&#x2dc;5.0%. The in-situ synthetic metal-coated flux-cored silver brazing material in the present disclosure realizes self-reaction in a brazing process to coat a layer of copper film on a surface of a brazed metal, the core of the brazing material has good wettability, good flowability, self-brazing function, and zinc being hard to volatilize, the flux coat has high activity, low hygroscopicity, few carbon residues, good plasticity and toughness, etc. The present disclosure is particularly suitable for brazing pipeline components of stainless steel, manganese brass and so on.

Brazing material outer coat and preparation method thereof, in-situ synthetic metal-coated flux-cored silver brazing material, preparation method thereof, welding method and joint body

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.

High-efficient energy-saving and surfacing layer well-forming self-shielded flux-covered welding wire and manufacture method

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Zhengzhou, China

Weimin Long