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Method for preparing copper cladding steel wire rod by utilizing casting post-heating rotary swaging technology

A technology of copper cladding and steel wire, which is applied in the direction of cable/conductor manufacturing, electrical components, circuits, etc., can solve the problems of poor comprehensive performance, high production cost, complicated process, etc., achieve large processing deformation, reduce production cost, The effect of simple process

Inactive Publication Date: 2012-11-07
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing copper-clad steel wire rods by hot swaging technology after melting and casting, which solves the problems of complicated preparation process, poor comprehensive performance and high production cost of such materials in the prior art

Method used

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  • Method for preparing copper cladding steel wire rod by utilizing casting post-heating rotary swaging technology
  • Method for preparing copper cladding steel wire rod by utilizing casting post-heating rotary swaging technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare a copper-clad steel wire with a steel core diameter of 2 mm, a wire outer diameter of 4 mm, and an unlimited length.

[0034] Step 1. Prepare the raw material, and cut the pre-prepared steel wire with a diameter of 2 mm according to the specification of the indicated wire. The steel wire is soaked in 70% phosphoric acid solution for 6 minutes, and after the surface impurities are removed, it is polished smooth with 280, 320, and 400 gauze successively, rinsed with absolute ethanol, and dried with a dryer at a temperature lower than 80°C to obtain Ready-to-use steel core material.

[0035] Step 2. Melting and casting copper-clad steel, put the steel core processed in step 1 into a graphite mold with a through hole diameter of 6mm, heat it to 1100°C in a high-temperature furnace with a nitrogen protective atmosphere, and keep it warm for 30 minutes, and pour the molten copper (T2) was injected into the through hole 2 of the graphite mold 1, and was taken out afte...

Embodiment 2

[0039] Prepare a copper-clad steel wire with a steel core diameter of 3.4 mm, a wire outer diameter of 5 mm, and an unlimited length.

[0040] Step 1. Prepare raw materials, cut steel wires with a diameter of 3.4 mm according to the specifications of the wires indicated, soak the steel wires with 65% phosphoric acid solution for 10 minutes, and polish them with 280, 320, and 400 gauze in turn after the surface impurities are removed. Then rinse with absolute ethanol and dry with a dryer at a temperature lower than 80°C to obtain a steel core for use.

[0041] Step 2. Melt and cast copper-clad steel, put the steel core processed in step 1 into the through hole of the graphite mold with a through hole diameter of 9 mm, heat it to 1150 ° C in a high temperature furnace with a nitrogen protective atmosphere, keep it for 20 minutes, and melt the The copper liquid (T2) injected in the through hole 2 of the graphite mold 1 is taken out after cooling with the furnace to obtain a blank...

Embodiment 3

[0046] Prepare a copper-clad steel wire with a steel core diameter of 4 mm, a wire outer diameter of 6 mm, and an unlimited length.

[0047] Step 1. Prepare the raw material, and cut the pre-prepared steel wire with a diameter of 4 mm according to the specification of the indicated wire. Soak the steel wire in 68% phosphoric acid solution for 8 minutes. After the surface impurities are removed, polish it with 280, 320, and 400 gauze in turn, then rinse it with absolute ethanol and dry it with a dryer at a temperature lower than 80°C. Have to use the steel core.

[0048] Step 2. Melt and cast copper-clad steel. Put the steel core processed in step 1 into a graphite mold with a through-hole diameter of 10 mm. Heat it to 1050°C in a nitrogen or argon protective atmosphere high-temperature furnace, keep it warm for 30 minutes, and melt the The copper liquid (T2) injected in the through hole 2 of the graphite mold 1 is taken out after cooling with the furnace to obtain a blank of ...

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Abstract

The invention discloses a method for preparing a copper cladding steel wire rod by utilizing the casting post-heating rotary swaging technology, which comprises the following steps: selecting different steel core diameters according to the specification of the manufactured wire rod; filling a treated steel core into a graphite mould; in a nitrogen or argon protective atmosphere high temperature furnace, heating to 1050-1150 DEG C; performing heat preservation for 20-30min; injecting molten pure copper liquid into the graphite mould; and performing furnace cooling to obtain a copper cladding steel blank; heating the manufactured copper cladding steel blank to 380-420 DEG C in a resistor furnace; performing the heat preservation for 10-15min; then putting on a rotary swaging machine for performing multi-pass rotary swaging; and performing return annealing when swaging is performed each time until the external diameter dimensional requirement of the process specification is met; and chemically polishing the manufactured copper cladding steel wire rod, then, washing out with clear water, and drying to obtain the copper cladding steel wire rod. The method disclosed by the invention canbe used for preparing the copper cladding steel wire rod with various diameters, and the copper cladding steel wire rod has stable performance, high quality and low cost.

Description

technical field [0001] The invention belongs to the technical field of cable and wire manufacture, and relates to a method for preparing copper-coated steel wires by hot swaging after melting and casting. Background technique [0002] Copper-clad steel wires are widely used in the fields of communication cables, building cloth wires, light electromagnetic wires and other wire and cable conductors. Copper-clad steel wires are concentrically and evenly covered with a layer of copper on the steel core. It has both The high strength of steel, and the excellent electrical conductivity and corrosion resistance of copper. Compared with pure copper wire, copper-clad iron wire has many advantages. Under the same cross-section and state (hard state), the strength of copper-clad steel wire is twice that of solid copper wire, and it can withstand large impact and load. When used in places with harsh conditions and frequent movement, it has high reliability, fatigue resistance and long ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00
Inventor 陈文革罗启文刘盈斌
Owner XIAN UNIV OF TECH
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