Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.

Quanbin Lu

Yinyin Pei

Junlan Huang

Sujuan Zhong

Yongtao Jiu

Yafang Cheng

Weimin Long

Xian Dong

Jia Ma

Hangyan Xue

Yong Li

Yuanxun Shen

Mengjie Nie

Huawei Sun

Guanxing Zhang

Peng He

Qi Wang

Bowen Dong

Xusheng Zhou

Dezhi Wang

Tianran Ding

Yanhong Guo

The present disclosure relates to a copper-phosphorus-zinc-tin brazing sheet and a preparation method and use thereof. The copper-phosphorus-zinc-tin brazing sheet includes a copper core layer, CuP alloy layers respectively arranged on two sides of the copper core layer, and at least two SnZn alloy layers respectively arranged on the other sides of the two CuP alloy layers away from the copper core layer.

Copper-phosphorus-zinc-tin brazing sheet and preparation method and use 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

The present disclosure relates to the field of brazing material technologies, and particularly to a copper-phosphorus brazing wire for brazing a copper alloy spectacle frame as well as a preparing method and system thereof. The copper-phosphorus brazing wire for brazing a copper alloy spectacle frame includes components with following mass percentage, 87.1%˜91.4% of Cu, 1.5%˜2.6% of Ag, 5.9%˜8.4% of P, 0.2%˜0.42% of Al and 0.8%˜1.68% of Si. For the copper-phosphorus brazing wire according to the present disclosure, through coordination and cooperation of the components, impurity content is low and joint strength is high in a welding process; a mass ratio of the Si to the Al is a constant value, and a dense oxide film may be formed on a surface of a molten pool to hinder volatilization of Zn in a base material.

Copper-phosphorus brazing wire for brazing copper alloy spectacle frame as well as preparing method and system thereof

The present disclosure provides a copper-phosphorus-tin brazing wire and a preparation method thereof, relates to the technical field of brazing materials. The copper-phosphorus-tin brazing wire is of a three-layer structure, the inner layer is Cu, the middle layer is Cu-14P alloy, and the outer layer is Sn, wherein the mass percentage of Sn is over 7%. The present disclosure solves the technical problems in the prior art that the copper-phosphorus-silver brazing filler metal is prone to produce defects such as pores and inclusions when brazing copper alloys, which leads to the decline of the mechanical properties of the joint, and simultaneously provides the preparation method of the copper-phosphorus-tin brazing wire, such that the technical problem that it is difficult to obtain copper-phosphorus-tin brazing wire with a wire diameter below 0.5 mm under the condition of high Sn content is solved.

Copper-phosphorus-tin brazing wire and preparation 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

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Zhengzhou, China

Quanbin Lu