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Method for producing free-cut conductive sulfur-copper bar

A production method and easy-cutting technology, applied in the production field of non-ferrous metal materials, can solve the problems of high energy consumption, low production efficiency, long processing process, etc., and achieve the effect of excellent performance and short process.

Active Publication Date: 2017-11-28
HESHAN JINZHOU COPPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional processing methods of sulfur-copper rods for free-cutting conduction are mainly ingot casting-hot extrusion-pickling-finishing-stretching-finishing, etc. The traditional processing process is long, energy-consuming, and production efficiency is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] A kind of production method of free-cutting conductive sulfur copper rod, comprises the following steps:

[0017] 1) Upward continuous casting of copper rods: smelting and upward continuous casting in the smelting device, covered with charcoal and graphite scales, using a traction unit to continuously cast copper rods; the temperature of the melting furnace is 1100 ° C, and the holding furnace The temperature is 1100°C, the diameter of the continuous casting copper rod is 21mm, and the speed of the continuous casting copper rod is 500mm / min; the sulfur content is 0.5%, the phosphorus content is 0.005%, the selenium content is 0.1%, and the antimony content is 0.1%; It contains two elements such as chromium and niobium, and the content of both elements is 0.003%.

[0018] 2) Milling: Milling the copper rod obtained in step 1), the milled size of the copper rod is 0.5mm.

[0019] 3) Continuous extrusion: use the copper rod obtained in step 2) as the raw material, and use...

example 2

[0025] A kind of production method of free-cutting conductive sulfur copper rod, comprises the following steps:

[0026] 1) Upward continuous casting of copper rods: smelting and upward continuous casting in the smelting device, covered with charcoal and graphite scales, using a traction unit to continuously cast copper rods; the temperature of the melting furnace is 1100 ° C, and the holding furnace The temperature is 1100°C, the diameter of the continuous casting copper rod is 20mm, and the speed of the continuous casting copper rod is 600mm / min; the copper rod contains 0.2% sulfur, 0.002% phosphorus, 0.15% selenium, and 0.15 antimony %; Contains two elements such as cerium and niobium at the same time, and the content of the two elements is 0.002%.

[0027] 2) Continuous extrusion: use the copper rod obtained in step 1) as the raw material, and use the forming device of the continuous extrusion unit to extrude the copper rod. The speed of the continuous extrusion unit is 7 ...

example 3

[0033] A kind of production method of free-cutting conductive sulfur copper rod, comprises the following steps:

[0034] 1) Upward continuous casting of copper rods: smelting and upward continuous casting in the smelting device, covered with charcoal and graphite scales, using a traction unit to continuously cast copper rods; the temperature of the melting furnace is 1100 ° C, and the holding furnace The temperature is 1100°C, the diameter of the continuous casting copper rod is 20mm, and the speed of the continuous casting copper rod is 500mm / min; the copper rod is composed of the following components: 0.2% sulfur, 0.002% phosphorus, selenium 0.1%, containing 0.1% antimony; it also contains two elements such as cobalt and chromium, and the content of the two elements mentioned above is 0.002%.

[0035] 2) Continuous extrusion: use the copper rod obtained in step 1) as the raw material, and use the forming device of the continuous extrusion unit to extrude the copper rod. The ...

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Abstract

The invention relates to a method for producing a free-cut conductive sulfur-copper bar. A copper bar comprises the following chemical components in percentage by weight: 0.2-0.5% of sulfur, 0.002-0.005% of phosphorus, 0.1-0.15% of selenium and 0.1-0.15% of antimony, wherein the ratio of selenium to antimony is 1:1; the tensile strength of the copper bar is greater than 320MPa; the ductility of the copper bar is greater than 5%; the conductivity of the copper bar is greater than 82% IACS (International Annealed Copper Standard); and the cutting rate of the copper bar is over 82% that of free-cut brass (of which the copper content is 61%, the zinc content is 36% and the lead content is 3%).

Description

technical field [0001] The invention relates to a production method of a nonferrous metal material, in particular to a production method of a sulfur-copper rod for easy cutting and conduction. Background technique [0002] Precision conductive devices not only require high conductivity, but also require precise dimensions and smooth surfaces due to their complex shapes. Most of them must be cut, so materials are also required to have excellent cutting performance. Although pure copper has excellent electrical and thermal conductivity, its cutting performance is poor, so sulfur-containing copper alloys are mostly used for important conductive devices. While retaining the excellent properties of copper alloys, the electrical and thermal conductivity properties are not degraded much, and can be produced using conventional methods. [0003] The traditional processing methods of sulfur-copper rods for free-cutting conduction are mainly ingot casting-hot extrusion-pickling-finish...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/04B22D11/00C22C9/00
CPCB21C37/045B22D11/004C22C9/00
Inventor 徐高杰
Owner HESHAN JINZHOU COPPER IND
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