Multi-strip silver-copper lateral composite strip for high-voltage fuse and preparation method of multi-strip silver-copper lateral composite strip

The invention discloses a multi-strip silver-copper lateral composite strip for a high-voltage fuse and a preparation method of the multi-strip silver-copper lateral composite strip, and the preparation method comprises the following steps: regulating and controlling the performances of pure copper and pure silver composite components through microalloying, improving the oxidation resistance of the pure copper, and enabling the deformation performances of the silver component and the copper component to be closer; microalloyed copper and pure silver are subjected to continuous casting, vacuum casting and rolling processing to prepare a copper bar and a silver bar, then the copper bar is slotted, the copper bar and the silver alloy bar are coated with an organic auxiliary agent on a composite interface to prepare a composite blank, the composite blank is subjected to primary rolling through a two-roller rolling mill to enable the combined interface to be in close contact, then protective atmosphere sintering i