A battery steel strip and its preparation method

A technology for steel strips and batteries, applied in the field of battery steel strips and their preparation, can solve problems such as cracking of the coating, exposure of the substrate, and peeling of the coating.

Active Publication Date: 2021-05-11
无锡市程晖电源配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are defects in the preparation of steel shells by electroplating. The steel strip substrate and coating integrity prepared by electroplating are not good. Because the nickel-plated steel strip needs to be stamped many times to form the steel shell, that is, the steel strip needs to be stretched and deformed many times. Lead to cracking of the coating, and in severe cases, it may even cause the coating to fall off, exposing the substrate, and the qualification rate of the steel shell is low

Method used

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  • A battery steel strip and its preparation method
  • A battery steel strip and its preparation method
  • A battery steel strip and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0047]Embodiment 1: a kind of battery steel belt, such as figure 1 As shown, including the low-carbon steel matrix 1, the low-carbon steel is preferably Q235 steel. Since the manufacturing technology of Q235 steel is mature, it is convenient to purchase in the market and the material cost is low. Both sides of the low-carbon steel substrate 1 are provided with a rice crystal Ni-Cr coating 2, and the rice crystal Ni-Cr coating 2 is provided with a semi-bright Ni-Co coating 3, and the semi-bright Ni-Co coating 3 is provided with a full-gloss Ni -Co plating4. The thickness of the low-carbon steel substrate 1 is 0.2 mm; the thickness of the rice crystal Ni-Cr coating 2 is 0.2 μm; the thickness of the semi-bright Ni-Co coating 3 and the full-gloss Ni-Co coating 4 is 0.6 μm.

Embodiment 2

[0048] Embodiment 2: A method for preparing a battery steel strip, which is mainly used for forming the battery steel strip described in Implementation 1, such as figure 2 shown, including:

[0049] S1: Low-carbon steel substrate 1 derusting: Use 9% HCl solution to clean the low-carbon steel substrate 1. Each surface of the low-carbon steel substrate 1 should be cleaned for 1 minute. The cleaning process should be repeated 2-3 times to ensure the removal of rust. Most of the oxidized rust on the carbon steel substrate 1 is provided with a coating layer on the low carbon steel substrate 1 to avoid rust interference.

[0050] S2: washing the low-carbon steel substrate 1 with water: washing the low-carbon steel substrate 1 with distilled water. The staff rinses the low-carbon steel substrate 1 with distilled water for 20 seconds on each surface, and repeats 3 to 4 times to ensure that no HCl solution remains on the low-carbon steel substrate 1 .

[0051] S3: Pre-plating: Put t...

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Abstract

The invention discloses a method for preparing battery steel strips, which belongs to the field of steel strip alloys and preparation methods thereof. The key points of the technical solution include: S1: derusting the low-carbon steel substrate; S2: washing the low-carbon steel substrate; S3: pre-washing the low-carbon steel substrate Plating; S4: pre-plating water washing; S5: electrodeposited coating forming; S6: coating washing; S7: steel strip drying; S8: continuous heat treatment; A battery steel strip, comprising a low-carbon steel substrate, both sides of the low-carbon steel substrate are provided with a rice crystal Ni-Cr coating, and the rice crystal Ni-Cr coating is provided with a semi-bright Ni-Co coating, so The semi-bright Ni-Co coating is provided with a full-gloss Ni-Co coating outside, and the crystal phase structure of the steel strip interpenetrates to improve the strength and fracture resistance of the steel strip.

Description

technical field [0001] The invention relates to a steel strip alloy and a preparation method thereof, in particular to a battery steel strip and a preparation method thereof. Background technique [0002] At present, the battery industry is in an unprecedented period of rapid development and expansion, especially new battery materials, battery technology and equipment technology have received extensive attention and in-depth research from battery researchers and the industry. The improvement of battery performance is not only related to the progress of battery materials, but also closely related to the quality of battery components. Nickel-plated steel strip is an important component of the battery. It is not only the carrier of battery active materials, but also the conductive skeleton of the electrode, which plays the role of concentrating electron conduction and evenly distributing current; nickel-plated steel strip has good electronic conductivity and Corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C25D5/36C25D5/50C25D7/06
CPCC25D3/562C25D5/36C25D5/50C25D7/0614
Inventor 朱立平
Owner 无锡市程晖电源配件有限公司
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