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Hot rolled wire rod for electrode of automobile power battery and production method of hot rolled wire rod

A technology for automotive power batteries and hot-rolled wire rods, applied in the direction of improving process efficiency, etc., to meet the needs of use, good cycle performance, and achieve sustainable effects

Active Publication Date: 2019-01-11
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This steel belongs to the low-carbon steel series and is not suitable for the steel used for the electrode of automobile power battery that requires ultra-low carbon pure steel.

Method used

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  • Hot rolled wire rod for electrode of automobile power battery and production method of hot rolled wire rod
  • Hot rolled wire rod for electrode of automobile power battery and production method of hot rolled wire rod
  • Hot rolled wire rod for electrode of automobile power battery and production method of hot rolled wire rod

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Embodiment Construction

[0039] The present invention is described in detail below:

[0040] Table 1 is the chemical composition list of each embodiment of the present invention and comparative example;

[0041] Table 2 is the smelting process technological parameter list of each embodiment of the present invention and comparative example;

[0042] Table 3 is the rolling process technological parameter list of each embodiment of the present invention and comparative example;

[0043] Table 4 is a list of performance test results of each embodiment of the present invention and comparative examples.

[0044] Each embodiment of the present invention all produces according to the following steps:

[0045] 1) Pretreatment of molten iron: control the molten iron entering the factory: S≤0.025%, Mn≤0.30%, Cu≤0.020%, Cr≤0.010%, Si≤0.80%; the temperature of molten iron is not lower than 1250°C; The S content of molten iron is controlled to [S]≤0.002%;

[0046] 2) Carry out converter smelting: control the en...

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Abstract

The invention relates to a hot rolled wire rod for an electrode of an automobile power battery. The hot rolled wire rod contains the following components in percentage by weight: C is less than or equal to 0.010%, Si is less than or equal to 0.02%, Mn is less than or equal to 0.04%-0.08%, P is less than or equal to 0.020%, S is less than or equal to 0.015%, Alt is less than or equal to 0.015%, Cuis less than or equal to 0.020%, Cr is less than or equal to 0.013%, Mg is less than or equal to 0.010%, and the sum of Zn, Pb, Ni and Mo is less than or equal to 0.030%. A production method of the hot rolled wire rod comrpsies the following steps: sequentially carrying out pretreatment of hot metal, converter sintering, vacuum treatment, casting blank formation, casting blank heating, rolling andspinning, and slowly cooling to the room temperature for later use. By virtue of the cooperation of a reasonable component ratio and a process, the hot rolled wire rod can meet the requirements of steel for electrodes, and meanwhile, the sustainability of the continuous casting production is realized. The specific capacity of a prepared battery electrode prepared for an electric automobile reaches 170mAh / g, the cycle performance is good, the use period reaches 2000 times, and the prepared battery electrode can well meet the use demand of the automobile power battery.

Description

technical field [0001] The invention relates to a wire rod and a production method, and specifically belongs to a hot-rolled wire rod for automobile power battery electrodes and a production method. Background technique [0002] With the intensification of environmental pollution and energy crisis, environmental protection has been established as the premise of development by countries all over the world. Automobile exhaust is the main source of urban air pollution, while the total number of automobiles in the world is increasing at a rapid rate. Therefore, new energy electric vehicles should be used And born. As one of the strategic emerging industries being cultivated and developed, electric vehicles are an important direction for the development of the future automotive industry. The power battery for electric vehicles is a key component of electric vehicles, and it also determines the power, safety, economy and practicability of vehicles. important factor. Power batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/20C22C38/22C22C38/42C22C38/44C22C38/60C21D8/02C22C33/04
CPCC21D8/0226C21D8/0247C22C33/04C22C38/002C22C38/02C22C38/04C22C38/06C22C38/20C22C38/22C22C38/42C22C38/44C22C38/60Y02P10/20
Inventor 仇东丽帅习元任安超贾万军鲁修宇张帆丁礼权夏艳花黄静鲁明正
Owner 武汉钢铁有限公司
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