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Polishing process for cathode roller for electrolytic copper foil production

A technology of electrolytic copper foil and electrolytic polishing, which is applied to surface polishing machine tools, grinding/polishing equipment, manufacturing tools, etc. appearance, avoidance of pinholes in raw foil, and the effect of simplifying the process

Active Publication Date: 2018-06-08
SHANDONG JINBAO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the surface morphology of the cathode roller becomes poor, the deposited copper foil grains will be of different sizes and arranged in disorder, resulting in the appearance of penetration points or pinholes

Method used

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  • Polishing process for cathode roller for electrolytic copper foil production
  • Polishing process for cathode roller for electrolytic copper foil production
  • Polishing process for cathode roller for electrolytic copper foil production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Select 1200# abrasive as Al 2 o 3 The polishing brush is used to polish the titanium cathode roller with a clean and dry surface. The rotational speed of the polishing brush is 260r / min, the polishing swing is 60 times / min, and the electrolytic polishing current is 2.0A; the diameter of the cathode roller is 2700mm, and the rotation speed of the cathode roller is 1.50m / min, polishing time is 12min.

[0018] The SEM photo of the smooth surface of the obtained wool foil sample is as follows: figure 1 shown.

Embodiment 2

[0020] Select 1200# abrasive as SiC polishing brush to polish the clean and dry titanium cathode roller, the polishing brush speed is 200r / min, the polishing swing is 30 times / min, the electrolytic polishing current is 3.8A; the cathode roller diameter is 2700mm, the cathode roll speed is 1.20m / min, and the polishing time is 21min.

[0021] The SEM photo of the smooth surface of the obtained wool foil sample is as follows: figure 2 shown.

Embodiment 3

[0023] Select 1500# abrasive as Al 2 o 3 The polishing brush is used to polish the titanium cathode roll with a clean and dry surface. The speed of the polishing brush is 120r / min, the polishing swing is 76 times / min, and the electropolishing current is 5.6A; the diameter of the cathode roll is 2700mm, and the speed of the cathode roll is 1.20m / min, polishing time is 35min.

[0024] The SEM photo of the smooth surface of the obtained wool foil sample is as follows: image 3 shown.

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Abstract

The invention belongs to the technical field of electrolytic copper foil production, and particularly relates to a polishing process for a cathode roller for electrolytic copper foil production. The process includes the steps that a polishing brush is adopted for directly polishing the cathode roller with a clean and dry surface, wherein the rotating speed of the polishing brush is 120-360 r / min,the polishing swing frequency is 15-80 times / min, and the electrolytic polishing current is 1.5-6.0 A. An existing polishing process mostly adopts a liquid medium such as pure water as the polishing solution, and the wet polishing process easily leads to generation of pinholes in electrolytic raw foil. By means the process, the surface of the cathode roller can be directly polished, which avoids the problem and simplifies the process; meanwhile, the surface morphology of the cathode roller can be effectively improved, ordered electrodeposition of copper crystals on the surface of the cathode roller is facilitated, and thus copper foil obtained after electrolysis shows excellent performance.

Description

technical field [0001] The invention belongs to the technical field of electrolytic copper foil production, and in particular relates to a polishing process of a cathode roll for electrolytic copper foil production. Background technique [0002] Copper foil is one of the main raw materials in the PCB industry and the new energy industry. High-performance electrolytic copper foil is a copper foil with few defects and uniform surface peaks. The cathode roller is the key equipment for the production of electrolytic copper foil. The copper ions in the electrolyte are deposited onto the surface of the cathode roller under the action of an external electric field. With the uniform rotation of the cathode roller, the copper deposited on the surface of the cathode roller is continuously peeled off. , so as to produce electrolytic copper foil, and the cathode roll is like a human heart to electrolytic copper foil. Since the electrolytic copper foil is formed by electrodeposition on ...

Claims

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Application Information

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IPC IPC(8): B24B29/02B24B1/00
CPCB24B1/00B24B29/02
Inventor 王学江杨祥魁徐树民王维河徐策徐好强孙云飞宋佶昌王其伶
Owner SHANDONG JINBAO ELECTRONICS
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