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Three-piece can and method for producing same

A three-piece can and can body technology, which is applied in the field of high-strength three-piece cans and their manufacturing, can solve the problems of inability to form a cylindrical shape and reduced shape retention, and achieve excellent processability and roll formability. Effect

Inactive Publication Date: 2015-02-04
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, by using a thin-walled high-strength material, the shape retention is reduced, and the cylindrical shape cannot be formed after roll forming.

Method used

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  • Three-piece can and method for producing same
  • Three-piece can and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Steel containing the composition shown in Table 1, the balance being Fe and unavoidable impurities was smelted in a converter, and a slab was obtained by continuous casting. After reheating the obtained billets at 1250°C, hot rolling, primary cold rolling, continuous annealing, and temper rolling were performed under the conditions shown in Table 2. The finishing temperature of the hot rolling was set to 890° C., and pickling was performed after rolling.

[0074] Continuous tin plating was performed on both sides of the steel sheet obtained above, and a Sn deposition amount of 2.8 g / m on one side was obtained. 2 tin-plated steel.

[0075]

[0076]

[0077] [table 3]

[0078] No.

tank strength

Processability

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Abstract

Provided are a three-piece can having particularly high strength, and a method for producing the same. The three-piece can has a can shell section in which a steel sheet is molded so that the circularity of the can is 0.34 mm or less, the steel sheet containing, in mass%, C: 0.020%-0.100%, Si: 0.10% or less, Mn: 0.10%-0.80%, P: 0.001%-0.100%, S: 0.001%-0.020%, Al: 0.005%-0.100%, and N: 0.0130%-0.0200%, the remainder being composed of Fe and unavoidable impurities; the yield strength of the steel sheet being 440 MPa or greater, and the total elongation of the steel sheet being 12% or more.

Description

technical field [0001] The present invention relates to a high-strength three-piece can and its manufacturing method. Background technique [0002] In order to reduce the cost of tanks (lightweight) and meet the requirements of environmental protection, the thickness reduction of steel plates for tanks has been continuously developed. In addition, the steel plate used as a raw material for can making needs to have a strength corresponding to the thickness of the plate. In order to ensure the strength of the can after the thickness of the plate is reduced, it is necessary to have a yield strength of about 440 MPa or more. With such reduction in plate thickness, there is a concern that the strength of the tank will decrease, and some research and development has been conducted so far as a countermeasure against it. Including adding 0.08 mass% or more of C in order to increase the strength of the steel plate to ensure the strength of the steel plate; and performing a second co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D6/30B21D51/26C22C38/00C22C38/06C21D9/46
CPCC21D9/46C22C38/02C22C38/06C21D8/0273C22C38/04B65D7/04C22C38/001C22C38/00C22C32/00B21D51/26B65D7/42
Inventor 多田雅毅小岛克己中丸裕树飞山洋一
Owner JFE STEEL CORP