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Drawing forming method of two-metal layered composite wire

A bimetal layered and composite wire technology, which is applied in the field of bimetal layered composite wire drawing and forming, can solve the problem of unstable composite wire quality and performance, large plastic deformation in coordination between bimetals, and difficult to accurately control the cladding ratio, etc. problems, to achieve the effect of easy and precise control of the cladding ratio, no need for intermediate annealing in drawing, and flexible specifications

Active Publication Date: 2014-11-12
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • Drawing forming method of two-metal layered composite wire

Examples

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Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of copper-clad nickel-nickel layered composite wire with a diameter of Φ4.0mm and a cladding ratio of 35%

[0026] Grinding the inner surface of the annealed double-layer T2 pure copper tube billet (size Φ8×1mm) and the surface of the annealed core CuNi44Mn1 nickel-nickel rod (diameter Φ6mm) at room temperature; at room temperature The core CuNi44Mn1 cupronickel rod is covered by the clad T2 pure copper tube billet to obtain the clad composite billet; the clad clad billet is sharpened, and then the single-pass casing composite pre-cooling is carried out to achieve pre-compounding and drawing deformation The pre-composite wire billet was obtained at a rate of 12%; the pre-composite wire billet was tipped; then the pre-composite wire billet was placed in an off-line resistance furnace with a temperature of 400 °C for heating and kept for 5 minutes, so that the temperature quickly reached the drawing temperature. The drawing temperature is 400°C, a...

Embodiment 2

[0027] Example 2:Preparation of copper-clad nickel-copper layered composite wire with a diameter of Φ0.3mm and a cladding ratio of 29%

[0028] Grinding the inner surface of the annealed double-layer T2 pure copper tube billet (size Φ8×1mm) and the surface of the annealed core CuNi44Mn1 nickel-nickel rod (diameter Φ6mm) at room temperature; at room temperature The core CuNi44Mn1 cupronickel rod is covered by the clad T2 pure copper tube billet to obtain the clad composite billet; the clad clad billet is sharpened, and then the single-pass casing composite pre-cooling is carried out to achieve pre-compounding and drawing deformation The pre-composite wire billet was obtained at a rate of 12%; the pre-composite wire billet was tipped; then the pre-composite wire billet was placed in an off-line resistance furnace with a temperature of 300 °C for heating and kept for 3 minutes, so that the temperature quickly reached the drawing temperature. The drawing temperature is 300°C. At...

Embodiment 3

[0029] Example 3: Preparation of Copper-clad Cupronickel Laminated Composite Wire with a Diameter of Φ0.05mm and a Covering Ratio of 30%

[0030] At room temperature, the inner surface of the annealed double-layer T2 pure copper tube billet (size Φ8×1mm) and the surface of the annealed core CuNi44Mn1 nickel-nickel rod (diameter Φ6mm) were polished with a high-speed rotating steel brush at room temperature; At room temperature, the clad T2 pure copper tube billet is used to wrap the core CuNi44Mn1 cupronickel rod to obtain the clad composite billet; the clad clad billet is rolled to a point, and then the single-pass casing composite pre-cooling is carried out to achieve pre-compounding. The drawing deformation rate was 12%, and the pre-composite wire billet was obtained; the pre-composite wire billet was rolled to the tip; then the pre-compound wire billet was rapidly heated to the drawing temperature of 600 °C within 5 seconds by an online induction heating device, and the mo...

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Abstract

The invention relates to a drawing forming method of a two-metal layered composite wire, which belongs to the technical field of the preparation of a two-metal layered composite wire. The drawing forming method is characterized by comprising the following steps: cladding a metal pipe blank with a heterogeneous rod, drawing and pre-compounding the metal pipe blank with the heterogeneous rod at a room temperature in a single manner, rapidly heating, treating by adopting the combination of drawing and metallurgically compounding under a condition of controlling the temperature and finely drawing at the room temperature to prepare a high-quality two-metal layered composite wire. The drawing forming method has the advantages that the combination strength of a compounded interface of the two-layer layered composite wire is high, a dispersion layer is thin, composite metal is uniformly distributed along the circumferential direction and the longitudinal direction, a cladding ratio is easy to precisely control, the drawing intermediate annealing is not required, the product specification is flexible, raw materials can be freely combined, the product quality and performance are excellent, and the micro two-metal layered composite wire with the diameter of less than 1mm is easy to prepare. The drawing forming method is particularly suitable for preparing the two-metal layered composite wire with an inter-metal compound being easy to generate on the compounded interface and the two-metal layered composite wire which is difficult to process.

Description

[0001] technical field [0002] 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 [0003] 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. China Materials Engineering Compendium (Volume 5 Nonfe...

Claims

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Application Information

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IPC IPC(8): B21C37/04
Inventor 刘雪峰袁学津颜阳谢建新
Owner UNIV OF SCI & TECH BEIJING
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