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Steel plate for cans and manufacturing method thereof

A manufacturing method and steel plate technology, which is applied to 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, low cost, and excellent formability

Active Publication Date: 2018-01-23
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 plate for cans and manufacturing method thereof
  • Steel plate for cans and manufacturing method thereof
  • Steel plate for cans and manufacturing method thereof

Examples

Experimental program
Comparison scheme
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 grain boundaries, and the steel conforming to JIS G 0551 is obtained using a 400-fold photograph taken with an opti...

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Abstract

An object of the present invention is to provide a steel sheet for a can having good drawing workability and excellent buckling strength of a can body portion against external pressure, and a method for producing the same. A steel sheet for cans, comprising C: 0.0030% to 0.0100%, Si: 0.05%, Mn: 0.10% to 1.0%, P: 0.030%, S: 0.020%, Al : 0.010% or more and 0.100% or less, N: 0.0050% or less, Nb: 0.010% or more and 0.050% or less, the content of C and Nb satisfies 0.10≤([Nb] / 92.9) / ([C] / 12)<0.60 , the balance is composed of Fe and unavoidable impurities, the hardness of HR30T is above 56, and the average Young's modulus is above 210GPa. The steel sheet for cans is obtained by cold-rolling a hot-rolled steel sheet at a rolling reduction of 85% or more and annealing at a recrystallization temperature or higher.

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 Patents(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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