Silicon bronze solder wire and preparation method thereof

Abstract

The invention discloses a silicon bronze solder wire and a preparation method thereof and belongs to the field of nonferrous metallurgy and processing. The solder wire comprises components of Zn, Sn, Fe, Mn, Si, Al, Pb, P and the balance Cu. The preparation method sequentially includes the following steps of proportionally mixing components, manufacturing a solder wire blank through upward continuous casting, and subjecting the solder wire blank to annealing, cooling, air cooling to normal temperatures, cold rolling, re-annealing, acid-washing, drawing and after-treating to obtain the silicon bronze solder wire. According to the silicon bronze solder wire and the preparation method thereof, production efficiencies of the solder wire blank are greatly improved, the surface of the produced wire blank is smooth and free from being oxidized, internal textures of the wire blank are even, chemical components are stable, contents of impurity elements are low, and the wire blank has good mechanical performances, so that energy consumption is reduced, and difficulties of follow-up drawing of the wire blank are reduced; and simultaneously, according to the silicon bronze solder wire, wire feeding is smooth during the welding process of the produced silicon bronze gas protection welding wire, molten pool liquidity and wettability are good, weld joints are not cracked, and the mechanical properties are good.

Description

technical field [0001] The invention belongs to the field of metallurgy and processing of nonferrous metals, and in particular relates to a preparation method of welding wire. Background technique [0002] Silicon bronze welding wire has a large demand in domestic and foreign markets, especially in the fields of automobile, military industry, chemical industry, and shipbuilding. For a long time, enterprises producing silicon bronze welding wire at home and abroad have used the horizontal continuous casting process to produce wire blanks. The wire blanks produced by this method have large specifications, low efficiency, high energy consumption, long production cycle, high impurity content, and wire The surface of the billet is easy to oxidize and the internal structure is uneven, and the large structure is prone to defects, which is not conducive to the subsequent drawing production of the welding wire. In addition, multiple annealing will be performed in the subsequent drawi...

AI Technical Summary

Problems solved by technology

For a long time, enterprises producing silicon bronze welding wire at home and abroad have used the horizontal continuous casting process to produce wire blanks. The wire blanks produced by this method have large specifications, low efficiency, high energy consumption, long production cycle, high impurity content, and wire The surface of the billet is easy to oxidize and the internal structure is uneven, and the large structure is prone to defects, which is not conducive to the subsequent drawing production of the welding wire. In addition, multiple annealing will be performed in the subsequent drawing process of the welding wire, which wastes energy and the production efficiency is also low. not tall

The surface quality of the produced welding wire is poor, and the wire feeding is not smooth enough during the welding process. Due to the high content of impurities in the welding wire, the fluidity and wettability of the molten pool are poor, which may easily cause weld cracking, welding defects such as incomplete fusion and incomplete penetration

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