A kind of bimetal layered composite wire drawing forming method

Abstract

The invention discloses a drawing forming method of a bimetallic layered composite wire, which belongs to the technical field of bimetallic layered composite wire preparation. It is characterized in that high-quality bimetallic layered composite wires are prepared by combining metal tube blanks with dissimilar metal rods, single-pass drawing pre-compounding at room temperature, rapid heating, temperature-controlled drawing metallurgical compounding and room temperature fine drawing . The advantages of the present invention are that the composite interface bonding strength of the bimetallic layered composite wire is high, the diffusion layer is thin, the cladding metal is evenly distributed along the circumferential direction and the longitudinal direction, the cladding ratio is easy to accurately control, no need for drawing and intermediate annealing, and the product specification is flexible , large degree of freedom in combination of raw materials, excellent product quality and performance, and easy preparation of fine bimetallic layered composite wires with a diameter of less than 1mm, etc. Fabrication of Metal Layered Composite Wires.

Description

technical field [0001] The invention belongs to the technical field of preparation of bimetallic layered composite wires, and in particular relates to a drawing forming method of bimetallic layered composite wires. technical background [0002] The double-metal layered composite wire is made of a two-component metal material compounded with a layer of multi-layer metal material on the surface of the base metal wire through a special preparation and processing method. Compared with the single-element metal wire, the rationally designed and compound-formed bimetallic layered composite wire combines the respective advantages of the two-element metal materials, which can not only save the amount of precious metals, but also obtain the advantages that the single-element metal materials do not have. Physical, chemical, mechanical and weldable properties [Huang Boyun, Li Chenggong, Shi Likai, Qiu Guanzhou, Zuo Tieyong. Chinese Materials Engineering Compendium (Volume 5 Nonferrous M...

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Problems solved by technology

On this basis, by solving the deformation coordination between casing composite pre-cooling drawing, temperature-controlled drawing, and room temperature finishing drawing, as well as the temperature control of the pre-composite wire billet and mold during temperature-controlled drawing, and the reasonableness of the process parameters in the whole process Matching and precise control of cladding ratio, etc., to develop a metallurgical method of wrapping metal tube blanks on dissimilar metal rods, single-pass drawing pre-compounding at room temperature, rapid heating, single-pass or multi-pass temperature-controlled drawing The drawing forming method of bimetallic layered composite wire combined with composite and single-pass or multi-pass room temperature fine drawing, changing the traditional rolling composite, extrusion composite, casting composite, hot-dip plating, electroplating and casing drawing The preparation methods of bimetallic layered composite wires include large equipment investment, difficulty in coordinating large plastic deformation between bimetals, poor quality of composite interface, difficulty in precise control of cladding ratio, unstable quality and performance of composite wires, and difficulty in meeting continuous improvement. The use requirements, and the inability to be used for the compounding of difficult-to-process or intermetallic compound metals at the interface, to achieve high efficiency, energy saving, low-cost production of high-quality bimetallic layered composite wires, etc.

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