Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece

A metal conductive, PCB board technology, applied in the direction of connection, fixed connection, contact parts, etc., can solve the problems of the bonding stability of the conductive connector and the PCB board, poor comprehensive performance of the formability, etc., and achieve high physical metallurgical bonding strength. , Reduce the cost of the process, the effect of good workability

Inactive Publication Date: 2014-04-09
SHENZHEN NONFEMET TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the technical defects of poor combination stability and formability of the conductive connector and the PCB board in t...

Method used

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  • Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece
  • Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece
  • Method for manufacturing conductive metal connecting piece connected with PCB and connecting piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] This embodiment provides a method for preparing a metal conductive connector connected to a PCB board. The raw materials used in the method: include a nickel base material of 30mm (width)*1.5mm (thickness), 0.15mm (thickness)*8mm (wide) pure copper tape.

[0052] The method comprises the steps of:

[0053] Step (1): On the surface of the pure nickel strip 1, a groove with a rectangular cross-section is continuously planed, the groove width is 8.1mm, and the depth is 0.15mm, and a pure copper strip is embedded in the groove of the pure nickel base material as The mosaic layer is formed into a composite metal strip with a thickness of 0.6mm through cold compound rolling with a rolling deformation rate of 60% at the corresponding fitting position. Wherein, the width of the mosaic layer-copper strip before rolling and compounding is 98.77% of the total width of the groove;

[0054] Step (2): Carry out three times of softening annealing process to the clad metal strip afte...

Embodiment 2

[0062] This embodiment provides a method for preparing a metal conductive connector connected to a PCB board. The raw material is a nickel base material of 30mm (width)*1.5mm (thickness), copper of 0.3mm (thickness)*8mm (width). -Silver layered composite material, in which the silver layer accounts for 10% of the total thickness of the copper-silver layered composite material, and the copper layer accounts for 90%. The copper-silver layered composite material is compounded by the existing preparation technology.

[0063] The method comprises the steps of:

[0064] Step (1): On the surface of the pure nickel strip, continuously plan a groove with a rectangular cross-section, the groove width is 8.2mm, and the depth is 0.3mm, and the copper-silver layer is embedded in the groove of the pure nickel substrate. The composite material is used as an inlay layer, and a composite metal strip with a thickness of 0.6mm is obtained through cold composite rolling with a rolling deformation...

Embodiment 3

[0070] This embodiment is an improvement on the basis of Embodiment 1, and provides a method for bending a metal conductive connector. The method includes steps 1-3 of the preparation method described in Example 1, and further includes step (4): bending and forming the conductive connector obtained in step (3).

[0071] According to the characteristics of inlaid copper that are easy to oxidize and discolor, generally the conductive connectors after stamping should be treated and protected to facilitate the subsequent brazing process.

[0072] After the SMT process, the outer surface of the inlay layer 2 is connected to the PCB board 3 through soldering. After mass testing, the anti-peeling pull-out force between the metal conductive connector and the PCB board 3 is above 1.6kgf, far exceeding the standard application requirement of 1.2kgf.

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Abstract

The invention provides a method for manufacturing a conductive metal connecting piece connected with a PCB and the connecting piece manufactured by adopting the method. The method comprises the following steps: an embedding layer is embedded in a groove of a metal substrate provided with the groove and roll bonding is conducted at the embedding position so that a composite metal strip can be formed, wherein the metal substrate is made of copper or stainless steel, and the embedding layer is a copper layer or a silver layer or a copper-silver composite layer with silver on the surface; the composite metal strip after rolling is subjected to softening annealing and rolling for at least two times, wherein the rolling deformation rate between the two times of softening annealing is not lager than 60%; the composite metal strip with a required specification and thickness is stamped so as to from the conductive metal connecting piece. The method for manufacturing the conductive metal connecting piece has the advantages that the processes are environmentally friendly, the manufactured conductive metal connecting piece is high in electrical conductivity, the combination stability between the conductive metal connecting piece and the PCB is high, and the formability is good.

Description

technical field [0001] The invention relates to a method for preparing a metal conductive connector connected with a PCB board and the metal conductive connector prepared by the method, belonging to the technical field of composite metal material preparation. Background technique [0002] The popularity and rapid development of mobile electronic products (such as smart phones and tablet computers) have made people put forward higher requirements for the performance of the above products, and whether the conductive connectors used for PCB circuit board connection can reliably connect PCB circuit boards It has a great influence on the reliability and stability of the final product quality, especially the key factors affecting important performance indicators such as product internal resistance and temperature rise. [0003] At present, the conductive connectors used for PCB circuit board connection are mostly made of pure nickel material or stainless steel material with better...

Claims

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Application Information

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IPC IPC(8): H01R43/16H01R13/03
CPCH01R43/0235H01R12/57
Inventor 徐卓辉
Owner SHENZHEN NONFEMET TECH
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