Manufacturing method of special-shaped composite interface

Abstract

The invention discloses a manufacturing method of a special-shaped composite interface. The method comprises pay-off wheels, wire guiding wheels, a guide hole, spot welding electrodes, a hydrogen protection pipe, hot rollers and a take-up wheel. The method comprises the following steps of strip shaping, wherein a base material is subjected to precision grooving by using a cold-rolled concave-convex roller, a noble metal strip is shaped by using a mold to match the size of a base-material cold-rolled groove; strip cleaning and annealing, wherein the base material and the noble metal strip are cleaned by using ultrasonic waves, the surface oil stains are removed, and heat treatment is carried out to an annealed state in a reducing atmosphere; and strip spot welding positioning and compounding, wherein under the cooperation of a take-up and pay-off device, spot welding is carried out through a spot welding motor after limiting of the guide hole, and the positioning effect is achieved. According to the method, a mode of batch cold rolling finish machining of the single metal and accurate positioning of the composite strip is adopted, the material utilization rate is improved, the instability in the production process is reduced, the required special-shaped interface shape can be obtained with high efficiency and high quality, and uniformity and stability of the shapes of the head and tail interfaces of strip are guaranteed.

Description

technical field [0001] The invention relates to a manufacturing method, in particular to a manufacturing method of a special-shaped composite interface. Background technique [0002] As we all know, special-shaped composite contact strips are often used in the field of relays and switches, and are a kind of electrical contact material with multi-layer composite and small interface. To prepare composite contact strips, noble metals and their alloys with excellent corrosion resistance, anti-welding resistance, anti-adhesion and low contact resistance are often used as electrical contact layers, and copper, nickel or copper-nickel alloys are used as their base layers; this composite The main purpose of the structure: ① save the amount of precious metals used; ② reduce production costs; ③ make full use of the comprehensive properties of different metals or alloys. However, with the fierce competition in the market and the reduction of costs, in order to reduce the use of precio...

AI Technical Summary

Problems solved by technology

[0003] The common compound interface shapes are flat interface, arc interface and special-shaped interface; especially for special-shaped composite interface, there are more requirements on the size. In the mass production process, according to the conventional production process, the interface accuracy and stability are relatively high. Poor, the uniformity of head and tail is poor

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