Through type silver and copper composite ingot and making method for strips

Abstract

The invention provides a through type silver and copper composite ingot and a making method for strips. The making method for strips comprises the steps of adopting a roll group of an irregular shape,wherein the roll group of the irregular shape is a pair of working rolls in the roll system of a four-roll solid phase complex rolling mill, and a groove is formed at the center of each working roll;making copper frames with the fixed width, and corresponding copper bars and silver bars according to the negative allowance of the groove widths of the rolls with irregular shapes, and carrying outsurface treatment on the copper frames, the copper bars and the silver bars; placing different number of copper bars and different number of silver bars tightly into one copper frame in an alternate arrangement manner as needed to form one complex blank, namely a complex ingot; and finally, carrying out processing to form complex silver and copper strips. According to the through type silver and copper composite ingot and the making method for strips, because the complex ingot made with the through type method has the advantages of being simple in structure and easy to split, the subsequent processing technologies are optimized, and the production period is shortened; and because of the improvement on the roll system of the four-roll solid phase composite rolling mill, the strength of silver and copper side composite strips is effectively improved.

Description

technical field [0001] The invention relates to the field of preparation of dissimilar metal composite strips, in particular to a method for preparing through-type silver-copper composite ingots and subsequent strips. Background technique [0002] Fuse refers to an electrical appliance that fuses the melt with the heat generated by itself and disconnects the circuit when the current exceeds the specified value. It is widely used in high and low voltage power distribution systems, control systems and electrical equipment as short circuit and over The current protector is one of the most commonly used protection devices. [0003] In the past, due to technical limitations, silver has been used as the main material for manufacturing melts for a long time, resulting in increased production costs and serious waste of scarce resources. With the development of modern composite material technology, a variety of processes have emerged that can realize the stable compounding of differ...

AI Technical Summary

Problems solved by technology

However, the production process of this method cannot restrict the non-rolling direction of the material strip, resulting in insufficient extrusion of the silver-copper interface, unsatisfactory bonding strength, and cumbersome processing of copper plates during production, resulting in increased production costs

[0005] In addition, the Chinese patent application "Preparation Method of Penetrating Lateral Composite Plate Strip and Die Hot Pressing Device" (CN101318286A, application number CN200810040137.4), however, this method also has cumbersome production procedures and high cost in mass production , and the width uniformity of the hot-rolled composite strip is not easy to control

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