A kind of preparation method of tin bronze welding wire

Abstract

The invention discloses a tin bronze welding wire and a preparation method thereof, which belong to the field of nonferrous metallurgy and processing. The welding wire comprises the following components of Zn, Sn, Fe, Al, Pb and P, and the remaining component is Cu. The preparation method comprises the following steps in sequence that the components are prepared in accordance with the proportion, and a welding wire blank is manufactured through up-drawn continuous casting; annealing treatment is performed on the welding wire blank, and then the welding wire blank is air cooled to room temperature; cold rolling is performed on the welding wire blank; the annealing treatment is performed again; pickling and drawing are performed; and post-treatment is performed to prepare a finished product. According to the preparation method, the efficiency of producing the welding wire blank is greatly increased; the surface of the produced welding wire blank is smooth and cannot be oxidized; internal structures are uniform; the chemical components are stable; the content of impurity elements is low; the wire blank has good mechanical property; energy consumption is reduced; the difficulty in subsequent drawing of the wire blank is reduced; additionally, smooth wire feed is protected by produced tin bronze gas in the welding process of the welding wire; the liquidity and the wettability of a molten pool are good; welding seams are not split; and the mechanical property is good.

Description

technical field [0001] The invention belongs to the field of metallurgy and processing of nonferrous metals, and in particular relates to welding wire and a preparation method thereof. Background technique [0002] Tin bronze welding wire has a large demand in domestic and foreign markets, especially in the fields of automobile, military industry, chemical industry, shipbuilding and other fields. For a long time, enterprises producing tin bronze welding wire at home and abroad have adopted 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...

AI Technical Summary

Problems solved by technology

For a long time, enterprises producing tin bronze welding wire at home and abroad have adopted 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

Images