Method for preparing special-shaped composite contact tape

Abstract

The invention discloses a preparation method of a special composite contact belt, wherein, two or more clean strips with matched properties are heated rapidly in protective atmosphere according to a certain speed by a brushing mechanism and a high frequency induction heater, continuously rolled and compounded according to a certain processing rate under the condition of atmosphere protection such as hydrogen, nitrogen, argon, etc. after a die is precisely located, and formed a long strip with two or more layers. After the long strip carries out heat treatment, the long strip is rolled to the regulated thickness and divided into a plurality of micro sized strips on a precise stripping device. The micro sized strips are prepared into special composite contact strips after being shaped, rolled and molded by a precise die. The preparation method of the invention has the advantages that close combination can be formed and at the same time performance of material is protected by making use of skin effect of the high frequency induction heating; no large rolling equipment is needed; strength of interlayer combination is high and stable; longer strips can be continuously compounded; production efficiency is high by combination of precise stripping technology, thus being suitable for production in large amount.

Description

technical field [0001] The invention relates to a method for preparing special-shaped composite contact strips by combining high-frequency induction composite technology and precision slitting technology. Background technique [0002] Monomer materials often cannot meet special performance requirements in many fields, so materials with different properties are often closely bonded together to form a composite material that can meet comprehensive properties or have new properties. Thermal bimetal strips, special-shaped composite contact strips, etc. are the most common application examples of composite materials. [0003] The special-shaped composite contact strip is a multi-layer composite and small-section electrical contact material that appears with the development of relays and switches in the direction of miniaturization, light weight, and high integration. Its cross-section is irregular, mostly triangular, trapezoidal, and other Shaped. The special-shaped composite c...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the interlayer bonding strength is unstable, and the equipment requirements are high

The disadvantages of the electroplating method are: it is not easy to achieve single-sided coating, there is a pinhole effect in the coating, the bonding strength of the coating is not high, and it is not suitable for the preparation of electrical contact layers above 10 microns

[0011] In some patents, compounding is carried out at a size close to that of the finished product, which has disadvantages such as long compounding processing time, low efficiency, and inconsistent compounding strength before and after.

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