Steel sheet for can, and method for manufacturing same

A manufacturing method and steel plate technology, which is applied in the direction of manufacturing tools, furnaces, heat treatment equipment, etc., can solve problems such as cracks and low drawing formability, and achieve the effects of excellent drawing formability, low cost, and resource conservation

Pending Publication Date: 2021-10-08
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] DR materials are mainly hardened by processing and curing, so the deep-drawing formability is generally low
Therefore, there is a problem that cracks and other defects occur in the rivet part of the EOE (Easy-Open End) and the flange processing of the 3-piece can body, which require high drawing formability.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0081] Steels containing the components of steel codes A to V shown in Table 1 and the remainder consisting of unavoidable impurities and Fe were melted to obtain billets. The obtained slabs were heated under the conditions shown in Table 2, followed by hot rolling and coiling, followed by pickling to remove scale, cold rolling once, and annealing at various annealing temperatures in a continuous annealing furnace. The obtained annealed sheet was subjected to secondary cold rolling at each secondary cold rolling ratio to obtain a steel sheet having a thickness of 0.12 to 0.22 mm (steel sheet codes 1 to 29).

[0082] [Table 1]

[0083] Table 1

[0084] steel symbol C Si mn P S Al N other Remark A 0.032 0.01 0.25 0.011 0.011 0.016 0.0151 - Invention example B 0.020 0.02 0.30 0.014 0.012 0.016 0.0139 - Invention example C 0.039 0.01 0.14 0.009 0.013 0.010 0.0163 - Invention example D 0.040 0.01 0.50 0.013 0...

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Abstract

Provided are a steel sheet for a can, suitable as a can container material used in a food or beverage can, and a method for manufacturing the steel sheet for a can. This steel sheet for a can has a component composition containing, in terms of mass%, 0.010-0.080% C, no more than 0.05% Si, 0.10-0.70% Mn, no more than 0.03% P, no more than 0.020% S, 0.005-0.020% Al, and 0.0120-0.0180% N, the remainder being Fe and unavoidable impurities, and the steel sheet for a can has a delta r of -0.3-0.3.

Description

technical field [0001] The present invention relates to a steel plate for cans suitable for can container materials used in food and beverage cans and a manufacturing method thereof. In particular, the present invention relates to a steel plate for cans suitable for DRD (Draw and Redraw) can bodies, snap caps and screw caps used as bottle caps, and a manufacturing method thereof. Background technique [0002] Among steel sheets used for beverage cans and food cans, steel sheets called DR (Double Reduced) materials are sometimes used for can lids, can bottoms, and bodies of 3-piece cans. The DR material refers to a steel sheet produced by performing annealing after primary cold rolling, and then performing secondary cold rolling at a rolling ratio of a certain level or more. Compared with SR (Single Reduced) material subjected to only temper rolling with a small rolling ratio, it is easy to harden and reduce the plate thickness. In recent years, from the viewpoint of enviro...

Claims

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Application Information

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IPC IPC(8): C22C38/00C21D9/46C22C38/06C22C38/54
CPCC22C38/02C22C38/04C22C38/06C22C38/001C21D8/0205C21D8/0226C21D8/0242C21D8/0236C21D8/0268C21D1/26C22C38/00C22C38/54C21D9/46C22C38/50C22C38/48C22C38/44C22C38/42C21D8/0273B21C47/02
Inventor 斋藤勇人假屋房亮小岛克己
Owner JFE STEEL CORP
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