Method for reducing cutting error of capacitor and battery metal foil cutter

Abstract

The invention discloses a method for reducing the cutting error of a capacitor and battery metal foil cutter. The method comprises the following steps: ultrasonically cleaning the metal foil cutter to remove grease, dehydrating and drying, and putting into a vacuum chamber; starting a cold cathode gas ion source, inputting argon into the cold cathode gas ion source, and performing ion beam polishing treatment on the surface of the metal foil cutter in the vacuum chamber through the led-out argon ions; turning off the cold cathode gas ion source, and turning on the arc ion source, wherein a cathode target and an anode cylinder of the arc ion source are both graphite, arc discharge is generated on the graphite cathode target surface, and then carbon plasma is generated; and leading out carbon ions in carbon plasma through an extraction electrode, enabling the carbon ions to enter a filtering magnetic field, forming pure carbon ion beams through screening of the filtering magnetic field and focusing of a magnetic lens, depositing the pure carbon ion beams on a metal foil cutter through a magnetic scanning deflection field, and forming a uniform amorphous tetrahedral carbon film.

Description

technical field [0001] The invention belongs to the technical field of ion beam material surface modification and new materials, and in particular relates to a method for reducing cutting errors of metal foil cutters of capacitors and batteries. Background technique [0002] In recent years, with the continuous application of new energy technology, energy storage technology has been greatly developed, and higher requirements have been put forward for the service life, safety and reliability of capacitors and batteries, and the life of energy storage devices such as capacitors and batteries And safety has a lot to do with the cutting error during metal foil processing, so reducing the cutting error of metal foil is an important indicator in the production of capacitors and batteries. At present, in the cutting process, there are two problems to be solved. One is to ensure the reduction of cutting error. The capacity of capacitors and batteries is getting larger and larger, wh...

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Problems solved by technology

[0005] (1) Its hardness is low, and the coating is generally thicker, about 3-5 microns. For metal foil cutters, the sharpness of the blade is greatly reduced, and the cutting error cannot be guaranteed;

[0006] (2) The surface roughness of this kind of coating is large. In order to improve the cutting error of the metal foil cutting blade, the surface is generally ground and the smoothness can reach below 200 nanometers. The smoothness is not conducive to the reduction of cutting errors and the prolongation of service life, so there is no coated tool for capacitor and battery metal foil cutting

High-speed steel blades are low in cost, low in hardness, and are used when the error is controlled at more than 25 microns. When the error is required to be controlled at 20 microns, the cutting data of a certain factory is at least 300 meters, the longest is more than 600 meters, and the average cutting is about 500 meters. The production loss is large , a factory consumes thousands of blades every day; the hardness of the tungsten steel blade is high, when the error is controlled at less than 20 microns, the long one can cut 2001 meters, the short one can cut 917 meters, the difference is 1084 meters, and the average cutting is 1480 meters. The lifespan can be greatly improved, but the error consistency of these two blades is not good, and the work is unstable

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