Unlock instant, AI-driven research and patent intelligence for your innovation.

Vacuum continuous casting process for high-purity oxygen-free copper rod

An oxygen-free copper rod and continuous casting process technology, applied in the field of metallurgy, can solve the problems of unstable oxygen content, low production efficiency, and difficult operation, etc., and achieve the effects of reducing oxygen content, ensuring quality, and shortening the process flow

Active Publication Date: 2021-08-24
JINCHUAN GROUP LIMITED +1
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a vacuum continuous casting process for high-purity oxygen-free copper rods to solve the problems of large investment scale, difficult operation, low yield and low production efficiency in the existing high-purity oxygen-free copper rod casting process. Disadvantages such as long process, high energy consumption, and unstable oxygen content of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vacuum continuous casting process for high-purity oxygen-free copper rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A vacuum continuous casting process for high-purity oxygen-free copper rods, comprising the following steps:

[0033] S1. Cleaning and shearing of 6N high-purity electrolytic copper plates: Clean the 6N high-purity electrolytic copper plates with a cleaning solution with a mass percentage ratio of 2:1:3 of superior pure sulfuric acid: glacial acetic acid: pure water, and place the electrolytic copper plates on In the cleaning basket, soak in the cleaning solution for 10 minutes, shake the cleaning basket every 3 minutes, so that the electrolytic copper plate is in full contact with the cleaning solution; place the cleaning basket and electrolytic copper plate in a pure water tank for 2 hours, and rinse the electrolytic solution with absolute ethanol after soaking. Dry the surface of the copper plate immediately; remove the oil and electrolyte on the surface of the electrolytic copper plate to make the surface clean and bright, and cut the cleaned electrolytic copper plat...

Embodiment 2

[0045] A vacuum continuous casting process for high-purity oxygen-free copper rods, comprising the following steps:

[0046] S1. Cleaning and shearing of 6N high-purity electrolytic copper plates: Clean the 6N high-purity electrolytic copper plates with a cleaning solution with a mass percentage ratio of 2:1:3 of superior pure sulfuric acid: glacial acetic acid: pure water, and place the electrolytic copper plates on In the cleaning basket, soak in the cleaning solution for 15 minutes, shake the cleaning basket every 3 minutes, so that the electrolytic copper plate is in full contact with the cleaning solution; place the cleaning basket and electrolytic copper plate in a pure water tank for 3 hours, and rinse the electrolytic solution with absolute ethanol after soaking. Dry the surface of the copper plate immediately; remove the oil and electrolyte on the surface of the electrolytic copper plate to make the surface clean and bright, and cut the cleaned electrolytic copper plat...

Embodiment 3

[0058] A vacuum continuous casting process for high-purity oxygen-free copper rods, comprising the following steps:

[0059] S1. Cleaning and shearing of 6N high-purity electrolytic copper plates: Clean the 6N high-purity electrolytic copper plates with a cleaning solution with a mass percentage ratio of 2:1:3 of superior pure sulfuric acid: glacial acetic acid: pure water, and place the electrolytic copper plates on In the cleaning basket, soak in the cleaning solution for 12 minutes, shake the cleaning basket every 3 minutes, so that the electrolytic copper plate is in full contact with the cleaning solution; place the cleaning basket and electrolytic copper plate in a pure water tank for 2.5 hours, rinse with absolute ethanol after soaking The surface of the electrolytic copper plate is dried immediately; the oil and electrolyte on the surface of the electrolytic copper plate are removed to make the surface clean and bright, and the cleaned electrolytic copper plate is cut i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Widthaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a vacuum continuous casting process for a high-purity oxygen-free copper rod. The vacuum continuous casting process comprises the steps that a 6N high-purity electrolytic copper plate is cleaned and sheared, a vacuum continuous casting furnace is cleaned, a sheared copper bar is vertically placed into a three-high graphite crucible, the vacuum continuous casting furnace is vacuumized, high-purity copper is smelted, the high-purity copper is refined, high-purity argon is introduced into a lower die chamber of the vacuum continuous casting furnace, then continuous casting is performed on refined copper liquid, and the copper rod is cut into specified lengths. According to the high-purity oxygen-free copper rod prepared through the steps, the mass percentage content of the copper element is larger than 99.9999%, the oxygen content is less than 0.0005%, the interior of the copper rod is dense, shrinkage cavities and other physical defects do not exist in the copper rod, the surface of the copper rod is smooth, the ductility is larger than 52%, and the electric conductivity is larger than 102.5% IACS. The prepared high-purity oxygen-free copper rod is high in purity, low in oxygen content, smooth in surface, free of the shrinkage cavities and other internal physical defects, high in extensibility and high in electric conductivity, the quality of the high-purity oxygen-free copper rod is effectively improved, and the vacuum continuous casting process for the high-purity oxygen-free copper rod is short in procedure, high in speed and low in energy consumption.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a vacuum continuous casting process for high-purity oxygen-free copper rods. The cast high-purity oxygen-free copper rods are used in industries and fields such as integrated circuit packaging and new energy vehicle wires. Background technique [0002] High-purity oxygen-free copper rod (6N) has good electrical conductivity, ductility, corrosion resistance and surface properties, and at the same time has a low softening temperature. It is mainly used in industries and fields such as integrated circuit packaging, production of high-purity copper evaporation materials, high-purity copper bonding wires, new energy vehicle wires, and high-quality audio cables. [0003] The casting process of the traditional high-purity oxygen-free copper rod is based on the upper induction production, and the furnace temperature is generally required. The temperature of the melting furnace is 117...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22D11/113B22D11/117
CPCB22D11/113B22D11/117Y02P10/20
Inventor 李伟杨晓艳张亚东柴明强张成吕锦雷魏丽梅黎楷刘世红
Owner JINCHUAN GROUP LIMITED