Manufacturing method of three-layer composite rivet
A manufacturing method and layer-composite technology, which can be applied to rivets, connecting components, etc., can solve the problems of affecting the contact electrical properties of products, low composite firmness of each layer, affecting the yield of contacts, etc., and save silver-based electrical contact materials. , Excellent electrical conductivity and stability, high yield effect
Inactive Publication Date: 2017-09-15
东莞市中一合金科技有限公司
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Problems solved by technology
However, the above-mentioned preparation method has the following disadvantages: the production process is complicated, the production efficiency is low, and the composite firmness of each layer is not high, which affects the contact electrical performance of the product; silver and silver alloy flat sheets are usually punched and formed by sheet metal, which has poor stability, and Each part is cut and shaped separately, and the finished product rate is low, which greatly affects the finished product rate of the contact, and the production cost is high
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[0024] The present invention will be further described below in conjunction with accompanying drawing, see attached drawing figure 1 .
[0025] In this embodiment, a manufacturing method of a three-layer composite rivet comprises the following steps:
[0026] (1) Composite the first silver-based electrical contact material layer and the second silver-based electrical contact material on both sides of the copper-based material layer to make a three-layer composite strip; the thickness of each layer of material is set according to the thickness of the product;
[0027] (2) Using slitting equipment to shape the three-layer composite strip obtained in step (1), and then performing multi-pass rolling on the three-layer composite strip after slitting to obtain a finished special-shaped strip of the actual required size;
[0028] (3) Punching the finished special-shaped belt obtained in step (2), and shaping the cut section;
[0029] (4) The shaped material section is subjected to ...
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The invention relates to the technical field of electrical contacts, in particular to a manufacturing method of a three-layer composite rivet. The manufacturing method comprises the following steps that (1) a three-layer composite strip is manufactured and comprises a first silver based electric contact material layer, a copper based material layer and a second silver based electric contact material layer which are sequentially arranged from top to bottom; (2) the three-layer composite strip is subjected to longitudinal shearing and splitting, then multi-pass rolling is carried out, and a finished special-shaped strip of the actual required size is obtained; (3) the finished special-shaped strip is subjected to blanking, and a cut material segment is shaped; and (4) the shaped material segment is subjected to cold heading forming, and the three-layer composite rivet is obtained. The manufacturing method is simple in process and high in production efficiency and finished product rate, silver based electric contact materials are saved, and the production cost is greatly reduced; and the manufactured three-layer composite rivet has excellent electrical conductivity and stability, the bonding strength of all layers is good, all properties meet the technical requirements, and a good use effect is achieved.
Description
technical field [0001] The invention relates to the technical field of electrical contacts, in particular to a method for manufacturing a three-composite rivet. Background technique [0002] Electric contacts are referred to as contacts or contacts. They are contact elements of electrical switches, instruments and meters. They are mainly responsible for connecting and breaking circuits and load currents. Its performance directly affects the safe and reliable operation of switching appliances. Service life and reliability play a decisive role. [0003] Silver rivet contacts are widely used in the electronics industry due to their good electrical conductivity and easy processing. The production cost is relatively high. With the increasing price of precious metals, the production cost of rivets is getting higher and higher. With the rapid development of the electronics industry, it can no longer meet the needs of the market. [0004] From the perspective of silver-saving tech...
Claims
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Login to View More IPC IPC(8): B21K1/62
CPCB21K1/62
Inventor 陈添乾李国兵王长喜游浩东
Owner 东莞市中一合金科技有限公司