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Steel sheet for can, and method for manufacturing same

A manufacturing method and steel plate technology, which is applied in the field of steel plates for cans as tank container materials, can solve the problems of reduced necking formability and flange formability, and achieve the effects of good hardness, increased rigidity, and excellent formability

Active Publication Date: 2016-03-02
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in Patent Document 1, there is a problem that the necking formability and flange formability are lowered due to the large secondary rolling of 50% or more

Method used

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  • Steel sheet for can, and method for manufacturing same
  • Steel sheet for can, and method for manufacturing same
  • Steel sheet for can, and method for manufacturing same

Examples

Experimental program
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Effect test

Embodiment 1

[0099]A steel containing the components of the steel codes A to V shown in Table 1, with the balance consisting of Fe and unavoidable impurities was melted to obtain a billet. The obtained slabs were heated under the conditions shown in Table 2, then hot-rolled, and then cold-rolled after removing scale by pickling. Next, in a continuous annealing furnace, after soaking at each annealing temperature for 20 seconds and cooling, temper rolling was performed to obtain steel sheets (steel sheet numbers 1 to 32) having a thickness of 0.220 mm. About the steel plate obtained by the said method, the characteristic evaluation was performed by the following method.

[0100]

[0101] [Table 2]

[0102]

[0103] Regarding the average grain size of ferrite, the ferrite structure in the cross-section in the rolling direction is etched with a 3% nital solution to reveal the grain boundaries. Using a photograph taken with an optical microscope at a magnification of 400, steel-crystall...

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Abstract

A purpose of the present invention is to provide a steel sheet for a can that has excellent spinning workability and exceptional strength against buckling at the base of the can resulting from external pressure, and a method for manufacturing the same. The steel sheet for a can is characterized in containing 0.0030% to 0.0100% C, 0.05% or less Si, 0.10% to 1.0% Mn, 0.030% or less P, 0.020% or less S, 0.010% to 0.100% Al, 0.0050% or less N, and 0.010% to 0.050% Nb, with the amount of C and Nb contained satisfying 0.10<=([Nb] / 92.9) / ([C] / 12)<0.60, the balance being Fe and unavoidable impurities, the HR30T hardness being 56 or greater, the average Young's modulus being 210 GPa or greater. A hot-rolled steel plate is cold-rolled with a rolling reduction of 85% or greater, and is annealed at a temperature equal to or greater than the recrystallization temperature, whereby the steel sheet for a can is obtained.

Description

technical field [0001] The present invention relates to a steel plate for cans suitable for can container materials used in food cans and beverage cans, and to a manufacturing method thereof. In particular, it relates to a steel sheet for a can having excellent drawing workability and buckling strength of the can body portion against external pressure, and a method for manufacturing the same. It should be noted that the steel sheet for cans of the present invention is useful for application to two-piece cans. Background technique [0002] In recent years, from the viewpoint of reducing environmental load and reducing costs, it is required to reduce the amount of steel sheets used in food cans and beverage cans, and the thinning of steel sheets is in progress regardless of whether it is a two-piece can or a three-piece can. Along with this, the deformation of the can body caused by the external force acting during the can making, transportation process, and loading and unloa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/00C21D9/48C22C38/12C22C38/14
CPCC21D9/48C22C38/00C22C38/12C22C38/14C21D8/0436C21D8/0473C21D2211/005C21D1/26C21D6/005C21D6/008C21D8/0205C21D8/0226C21D8/0236C21D8/0263C21D9/46C22C38/001C22C38/002C22C38/004C22C38/02C22C38/04C22C38/06
Inventor 斋藤勇人中川祐介小岛克己中丸裕树
Owner JFE STEEL CORP
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