Manufacturing method and manufacturing equipment of composite silver strip

Abstract

The invention discloses a manufacturing method and manufacturing equipment of a composite silver strip, and relates to manufacturing methods and manufacturing equipment of electrical contact materials. The method comprises the following working processes: early treatment of a silver metal oxide strip and a copper strip, heating of the silver metal oxide strip and the copper strip, compounding of a silver oxidation strip and the copper strip, annealing of a composite strip, finish-rolling of the composite strip, stress removal of the composite strip, antioxidation of the composite strip, striping of the composite strip, and testing of the composite strip. Compared with the prior art, the manufacturing method and the manufacturing equipment have the beneficial effects that the silver metal oxide strip can be prevented from contacting the outside in the heating process; the problems that protective atmosphere and the silver metal oxide strip are subjected to reduction reaction, so that the silver metal oxide is reduced and the performance of the composite silver strip is reduced are avoided; and meanwhile, the silver metal oxide strip is put into a groove in the copper strip and then is subjected to heat press-rolling, so that the composite silver strip is relatively high in bonding strength and relatively good in compound fastness.

Description

technical field [0001] The invention relates to the technical field of electrical contact materials, in particular to a method for manufacturing a silver metal oxide-copper composite electrical contact. Background technique [0002] Electrical contacts are contact elements of electrical switches and instruments, which are mainly responsible for making and breaking current [0003] The role of it, it has a decisive role in the safe operation of electrical appliances, in the production of electrical contact materials, silver metal oxides (such as silver tin oxide AgSnO 2 , Silver cadmium oxide (AgCdO) materials are widely used in low-voltage electrical appliances due to their good resistance to electrical wear, welding resistance and electrical conductivity. Silver tin oxide / copper composite material is a new type of functional material composed of silver metal oxide and copper through a special composite process. It not only retains the main characteristics of silver metal o...

AI Technical Summary

Problems solved by technology

However, the bonding strength between silver metal oxide and copper is relatively poor. At present, the focus of domestic research on silver-copper composite materials is the strip composite and surface composite of silver-copper alloy and oxygen-free copper. These are basically not the combination of silver oxide and copper. complex

Now individual enterprises produce silver metal oxide and copper composite materials by first welding the edges of the silver metal oxide plate ingot and the thick copper ingot with argon arc welding, and then welding them together under the protection of reducing gas. The hot rolling mill performs repeated hot rolling and compounding. During the hot rolling process, the silver metal oxide will react with the reducing gas to reduce the silver metal. The silver oxide content in the silver-copper composite material produced in this way is not high. At the same time, this The production method cannot be produced on a large scale, and only a section of strip with a small length can be processed each time. This process cannot be used for continuous processing, and the production efficiency is extremely low.

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