Preparation method of copper-clad steel bimetal composite rod

A bimetallic and composite rod technology, which is applied in the field of bimetallic composite material preparation, can solve the problems of limited thickness of copper layer, large pollution of electroplating method, large loss of raw materials, etc., and achieve the effect of good surface quality, low cost and stable bonding performance

Inactive Publication Date: 2011-05-11
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electroplating method has high pollution and high energy consumption, and the thickness of the copper layer is limited; the sheath extrusion method has high cost and large loss of raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Raw materials: A3 steel rod, size φ22mm×1000mm; T2 copper tube (copper content above 99.90%), φ 外 25mm×1mm×1000mm.

[0020] Put steel rods and copper tubes in NaOH solution (concentration: 30g / L) alkali washing tank, heat to 80°C, keep for 8-10 minutes, hot alkali washing to remove oil. Then put the steel bar in the pickling tank of 4% dilute hydrochloric acid (volume ratio concentration) solution, keep it for 5-6 minutes, pickling and derusting. After rust removal, perform a hot water rinse. Finally dry, the drying temperature is 100 DEG C, and the drying time is 30 minutes. Keep the surface of steel rods and copper tubes clean and dry.

[0021] One end of the steel rod with a length of 150mm is processed on the head-removing machine, and the size after the head-removing is φ16mm. Insert the steel rod into the copper tube of the same length, and after the copper tube covers the steel rod, perform a compound head-cutting treatment on the head-turning machine, so tha...

Embodiment 2

[0024] Raw materials: A3 steel rod, size φ19.5mm×2000mm; T2 copper tube (copper content above 99.90%), φ 外 22mm×1mm×2000mm.

[0025] Put steel rods and copper tubes in NaOH solution (concentration: 40g / L) alkali washing tank, heat to 100°C, keep for 8-10 minutes, and remove oil by hot alkali washing. Then put the steel bar in the pickling tank of 3% dilute hydrochloric acid (volume ratio concentration) solution, keep it for 5-6 minutes, and pickle and remove the rust. After rust removal, perform a hot water rinse. Finally dry, the drying temperature is 100 DEG C, and the drying time is 30 minutes. Keep the surface of steel rods and copper tubes clean and dry.

[0026] One end of the steel rod with a length of 200mm is processed on the head-removing machine, and the size after the head-removing is φ15mm. Insert the steel rod into the copper tube of the same length, and after the copper tube covers the steel rod, perform compound head processing on the head-turning machine, ...

Embodiment 3

[0029] Raw materials: A3 steel rod, size φ15mm×2000mm; T2 copper tube (copper content above 99.90%), φ 外 20mm×2mm×2000mm.

[0030] Put steel rods and copper tubes in NaOH solution (concentration: 50g / L) alkali washing tank, heat to 100°C, keep for 8-10 minutes, and remove oil by hot alkali washing. Then put the steel bar in the pickling tank of 5% dilute hydrochloric acid (volume ratio concentration) solution, keep it for 5-6 minutes, pickling and derusting. After rust removal, perform a hot water rinse. Finally dry, the drying temperature is 80 DEG C, and the drying time is 30 minutes. Keep the surface of steel rods and copper tubes clean and dry.

[0031] Put one end of the steel bar with a length of 100mm on the head-cutting machine, and the size after the head-turning is φ10mm. Insert the steel rod into the copper tube of the same length, and after the copper tube covers the steel rod, perform compound head processing on the head-turning machine, so that the copper tub...

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Abstract

The invention relates to a preparation method of a copper-clad steel bimetal composite rod, belonging to the technical field of bimetal composite material preparation. The preparation method comprises the following steps of: (1) using a steel rod and a copper tube as raw materials; (2) carrying out the pretreatment of deoiling, derusting and drying on the steel rod and the copper tube; (3) rolling the head of the steel bar by a head rolling machine; (4) inserting the steel bar into the copper tube, carrying out the composite head rolling treatment by the head rolling machine; and (5) carrying out 2-3 passes of composite drawing to obtain the copper-clad steel bimetal composite rod. The method has the characteristics of simple process, high efficiency and low cost. The copper-clad steel bimetal composite rod prepared with the method has stable bonding performance in the copper-steel surface and great surface quality.

Description

technical field [0001] The invention relates to a method for preparing a copper-clad steel bimetallic composite rod, belonging to the technical field of bimetallic composite material preparation. Background technique [0002] Copper-clad steel bimetal composite materials (rods and flat strips, etc.), the outer cladding material is copper, the inner material is steel, and the copper and steel are required to be well bonded. This material has the excellent corrosion resistance and good electrical conductivity of copper, as well as the strength and rigidity of steel. It is an excellent grounding body material and is widely used in electric power and lightning protection grounding projects. At present, copper-clad steel composite rods and flat strips are mainly prepared by electroplating method and sheath extrusion method. The electroplating method has high pollution and high energy consumption, and the thickness of the copper layer is limited; the sheath extrusion method has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21C1/00
Inventor 范荣辉
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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