Preparation method of pure copper-brass composite wire of soft/hard filiform structure

A technology of composite wire and pure copper, which is applied in the field of preparation of soft/hard filamentary structure pure copper-brass composite wire, can solve the problems of limited interface strengthening, low material utilization, poor interface bonding, etc., and achieve interface bonding Excellent performance, strong process controllability, and high interface ratio

Active Publication Date: 2019-09-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the multilayer materials prepared by this method have many disadvantages
On the one hand, it is difficult to effectively combine the two metals by relying on cold deformation, and the problems of low material utilization caused by cracks and poor interface bonding are prone to occur during the deformation process; on the other hand, the interface of multilayer composite materials is limited, and the interface strengthens is also limited to a certain extent

Method used

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  • Preparation method of pure copper-brass composite wire of soft/hard filiform structure
  • Preparation method of pure copper-brass composite wire of soft/hard filiform structure

Examples

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Effect test

Embodiment 1

[0032] First, the following equipment is used in this embodiment: high temperature diffusion pressure welding equipment, rotary forging equipment, heat treatment tube furnace.

[0033] The process flow chart of preparing a pure copper-brass composite wire rod in this embodiment is as follows figure 1 As shown, the specific operation is as follows:

[0034] The thickness of the pure copper and brass plates used in this embodiment is 1mm, and the size is 50×100mm 2 , the chemical composition (wt.%) of pure copper used is: Cu: 99.94, Zn: 0.0041, Pb: 0.0007, Sn: 0.0005, Fe: 0.0031, Ni: 0.0028, Si: 0.028, and the rest are unavoidable impurities , The chemical composition (wt.%) of brass is: Cu: 63.25, Zn: 36.42, Fe: 0.025, Pb: 0.0005, Sb: 0.002, Bi: 0.0005, P: 0.004, and the rest are unavoidable impurities.

[0035] Select 25 pieces of pure copper and brass plates, firstly perform mechanical grinding and cleaning on the upper and lower surfaces, remove the surface oxide layer, an...

Embodiment 2

[0045] This embodiment adopts the following equipment: high-temperature diffusion pressure welding equipment, rotary forging equipment, and tube furnace for heat treatment.

[0046] The process flow chart for preparing a pure copper-brass composite wire with a soft / hard filamentary structure in this embodiment is as followsfigure 1 As shown, the specific operation is as follows:

[0047] The thickness of the pure copper and brass plates used in this embodiment is 1mm, and the size is 40×80mm 2 , the chemical composition (wt.%) of pure copper used is: Cu: 99.94, Zn: 0.0041, Pb: 0.0007, Sn: 0.0005, Fe: 0.0031, Ni: 0.0028, Si: 0.028, and the rest are unavoidable impurities , The chemical composition (wt.%) of brass is: Cu: 63.25, Zn: 36.42, Fe: 0.025, Pb: 0.0005, Sb: 0.002, Bi: 0.0005, P: 0.004, and the rest are unavoidable impurities. Select 20 pieces of pure copper and brass plates, firstly perform mechanical grinding and cleaning on the upper and lower surfaces, remove the su...

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Abstract

The invention discloses a preparation method of a pure copper-brass composite wire of soft / hard filiform structure. The preparation method of the pure copper-brass composite wire of soft / hard filiform structure includes: first, preforming multilayer alternate stacking on pure copper wires and brass wires, 0.5-3mm in thickness, and then tightly combining the copper wires and the brass wires together through welding by adopting diffusion pressure welding treatment; cutting the copper wires and the brass wires into slices along the longitudinal direction, alternately stacking the copper wire slices and the brass wire slices after rotating the slices at a certain angle, performing secondary diffusion pressure welding, and finally obtaining the pure copper-brass composite wire of soft / hard filiform structure through rotary rolling and annealing treatment. The obtained pure copper-brass composite wire of soft / hard filiform structure is tight in interface bonding and does not have defects such as cracks or holes.

Description

technical field [0001] The invention belongs to the field of structural material preparation, and in particular relates to a method for preparing a soft / hard wire structure pure copper-brass composite wire. Background technique [0002] Copper and copper alloys are one of the earliest metal materials successfully prepared and widely used by human beings. They are widely used in fields such as electric power, machinery, construction and national defense industries. With the continuous improvement of industrial technology, the society's demand for high-performance metal structural materials has further increased, especially for the matching of strength and toughness of traditional metal materials such as copper and copper alloys. Pure copper has excellent electrical and thermal conductivity, but its low strength (coarse crystal tensile strength is about 200MPa), limits its further application. Adding Zn, Ni, Sn and other elements to pure copper to form copper alloy can improv...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22F1/08B21C37/04
CPCB21C37/04C22C9/04C22F1/08
Inventor 李玉胜周忠臣李建生毛庆忠王帅卓周浩
Owner NANJING UNIV OF SCI & TECH
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