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Quick and thinning stamping processing new energy automobile battery shell steel and method for producing same

A new energy vehicle, stamping technology, applied in the field of metallurgy, can solve the problems of poor forming performance of battery shell steel, and achieve the effect of high cleanliness, high forming performance characteristics, high performance uniformity

Inactive Publication Date: 2019-01-04
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through reasonable composition design and optimized design of steelmaking, refining, continuous casting, hot rolling, coiling, cold rolling, continuous annealing and other processes, the invention guarantees the cleanliness and performance of the steel strip. Commercialized ultra-low carbon steel has high strength, and overcomes the problem of poor formability of low-carbon battery case steel, and adapts to the processing requirements of rapid stamping and thinning stamping

Method used

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  • Quick and thinning stamping processing new energy automobile battery shell steel and method for producing same
  • Quick and thinning stamping processing new energy automobile battery shell steel and method for producing same
  • Quick and thinning stamping processing new energy automobile battery shell steel and method for producing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] See Table 1 for the chemical composition and mass percentage of the steel for the battery shell of the new energy vehicle that is processed by rapid, thinning and stamping in this embodiment.

[0053] The production method of the steel for the battery shell of a new energy vehicle by rapid, thinning and stamping processing in this embodiment includes the steps of steelmaking, continuous casting, hot rolling, coiling, cold rolling, continuous annealing, and leveling, and the specific process steps are as follows:

[0054] (1) Steelmaking process: Before smelting, molten iron is subjected to compound injection of lime and magnesium powder for deep desulfurization treatment, molten iron S: 0.003%; converter smelting terminal temperature 1700℃, terminal oxygen level 485ppm, molten steel composition: C: 0.045%, S: 0.005%, P: 0.009%; the molten steel discharged from the converter is subjected to vacuum treatment by RH, and the RH vacuum treatment process is followed by decarbu...

Embodiment 2

[0063] See Table 1 for the chemical composition and mass percentage of the steel for the battery shell of the new energy vehicle that is processed by rapid, thinning and stamping in this embodiment.

[0064] The production method of the steel for the battery shell of a new energy vehicle by rapid, thinning and stamping processing in this embodiment includes the steps of steelmaking, continuous casting, hot rolling, coiling, cold rolling, continuous annealing, and leveling, and the specific process steps are as follows:

[0065] (1) Steelmaking process: Before smelting, molten iron is subjected to compound injection of lime and magnesium powder for deep desulfurization treatment, molten iron S: 0.002%; converter smelting terminal temperature 1703 °C, terminal oxygen level 550ppm, molten steel composition: C: 0.040%, S: 0.007%, P: 0.010%; the molten steel from the converter is vacuum treated by RH, and the RH vacuum treatment process is followed by decarburization, deep deoxidati...

Embodiment 3

[0074] See Table 1 for the chemical composition and mass percentage of the steel for the battery shell of the new energy vehicle that is processed by rapid, thinning and stamping in this embodiment.

[0075] The production method of the steel for the battery shell of a new energy vehicle by rapid, thinning and stamping processing in this embodiment includes the steps of steelmaking, continuous casting, hot rolling, coiling, cold rolling, continuous annealing, and leveling, and the specific process steps are as follows:

[0076] (1) Steelmaking process: Before smelting, molten iron is subjected to compound injection of lime and magnesium powder for deep desulfurization treatment, molten iron S: 0.001%; ​​converter smelting end temperature 1730℃, end oxygen level 750ppm, molten steel composition: C: 0.035%, S: 0.004%, P: 0.013%; the molten steel out of the converter is vacuum treated by RH, and the RH vacuum treatment process is followed by decarburization, deep deoxidation by ad...

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Abstract

The invention discloses quick and thinning stamping processing new energy automobile battery shell steel and a method for producing the same. The quick and thinning stamping processing new energy automobile battery shell steel comprises chemical components including, by weight, 0.0030-0.0060% of C, 0.10-0.20% of Mn, less than or equal to 0.03% of Si, 0.050-0.090% of Als, 0.050-0.070% of Ti, less than or equal to 0.015% of P, less than or equal to 0.012% of S, less than or equal to 0.0040% of N, the balance Fe and inevitable impurities. The method includes steelmaking, continuous casting, hot rolling, reeling, cold rolling, continuous annealing and flattening working procedures. The quick and thinning stamping processing new energy automobile battery shell steel and the method have the advantages that the quick and thinning stamping processing new energy automobile battery shell steel produced by the aid of the method can adapt to quick stamping and thinning stamping processing requirements, and the problem of poor forming properties of low-carbon battery shell steel can be solved by the aid of the quick and thinning stamping processing new energy automobile battery shell steel andthe method; control points of technologies for producing the quick and thinning stamping processing new energy automobile battery shell steel are clear and definite, and the quick and thinning stamping processing new energy automobile battery shell steel and the method are good in implementation and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a fast, thin-stamping steel for a battery shell of a new energy vehicle and a production method. Background technique [0002] The battery shell steel for new energy vehicles is a high-end cold-rolled steel grade with extremely high comprehensive performance requirements. With the gradual increase in the requirements for lightweight and battery life of new energy vehicles, the steel for battery shells is required to meet the requirements of thinning and stamping, and to ensure sufficient strength after forming to avoid bulging defects due to insufficient pressure resistance after battery charging; In addition, based on the requirements of improving production efficiency, and with the advancement of processing and forming equipment, it is required that battery shell steel can adapt to the processing requirements of rapid stamping. [0003] The authorized announceme...

Claims

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Application Information

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IPC IPC(8): C21C1/02C21C7/00C21C7/06C21C7/064C21C7/068C21C7/10C21D1/26C21D6/00C21D8/02C21D9/56C22C33/04C22C38/02C22C38/04C22C38/06C22C38/14B21C37/02H01M2/02H01M50/116
CPCC21C1/02C21C7/0006C21C7/0025C21C7/06C21C7/064C21C7/068C21C7/10C21D1/26C21D6/005C21D6/008C21D8/0221C21D9/56C22C33/04C22C38/001C22C38/002C22C38/004C22C38/02C22C38/04C22C38/06C22C38/14B21C37/02H01M50/116Y02E60/10
Inventor 李梦英张洪波李梦龙路博勋冯晓勇郭志凯刘海春李波刘靖宝
Owner TANGSHAN IRON & STEEL GROUP
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