Manufacturing method of steel plate for can making

A manufacturing method and technology for steel plates, which can be applied in the direction of manufacturing tools, metal rolling, furnaces, etc., can solve the problems of inability to obtain TS600MPa strength, deterioration of plate thickness uniformity, etc.

Inactive Publication Date: 2011-11-30
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the steel sheet produced under such conditions, there is a problem that the thickness uniformity in the longitudinal direction of the steel sheet coil is degraded.
[0018] In addition, in Patent Document 2 and Patent Document 3, a high-strength steel sheet is obtained by performi

Method used

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  • Manufacturing method of steel plate for can making
  • Manufacturing method of steel plate for can making

Examples

Experimental program
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Effect test

Embodiment 1

[0066] Examples are described below.

[0067] Various steels containing the components shown in Table 1 were smelted to make slabs with a thickness of 250 mm, heated at a heating temperature of 1100 to 1250 ° C, and rough rolled into thick bars with a thickness of 35 mm. The indicated hot rolling conditions, that is, the finish rolling temperature, are less than Ar 3 Hot rolling was performed at the rolling amount at the transformation point (the ratio of the finishing rolling to the total rolling amount) and the coiling temperature. Next, after pickling, cold rolling was performed at the rolling ratio shown in Table 2, and annealing was performed at the annealing temperature for a soaking time of 10 s to 45 s.

[0068] Table 1

[0069] (quality%)

[0070]

[0071] With regard to the steel sheets obtained as described above, first, variations in sheet thickness were evaluated.

[0072] Sheet thickness fluctuations are measured by the X-ray thickness gauge installed on t...

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PUM

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Abstract

Provided is a method of manufacturing a steel sheet for cans. The method includes providing a slab by continuous casting of a steel having a component composition of, in mass%, C: 0.005% or less, Mn: 0.05 to 0.5%, Al: 0.01 to 0.10%, N: 0.0010 to 0.0070%, B: 0.15×N to 0.75×N (0.15 to 0.75 in terms of B/N), and one or both of Nb: 4×C to 20×C (4 to 20 in terms of Nb/C) and Ti: 2×C to 10×C (2 to 10 in terms of Ti/C), and the balance of Fe and inevitable impurity elements; rough rolling the slab; finish rolling the rough-rolled slab wherein 5% or more and less than 50% of the total amount of rolling reduction in the finish rolling is hot-rolled at a temperature lower than the Ar 3 transformation point; winding the hot-rolled steel sheet at a winding temperature of 640 to 750°C; pickling the coiled steel sheet; cold rolling the pickled steel sheet at a rolling reduction rate of 88 to 96%; and annealing the cold-rolled steel sheet in a temperature range of higher than 400°C to a temperature that is 20°C lower than the recrystallization temperature. According to this manufacturing method, a steel sheet for cans having a reduced variation in thickness in the longitudinal direction of the steel sheet coil and high strength and ductility necessary for manufacturing cans.

Description

technical field [0001] The present invention relates to a method for manufacturing a steel plate for can making that has high strength and excellent thickness accuracy. Background technique [0002] Cans such as beverage cans, food cans, 18-liter cans, and drum cans can be roughly divided into two-piece cans and three-piece cans according to their manufacturing methods (processes). [0003] The two-piece tank consists of two parts, and is applied to surface-treated steel sheets that have been treated with tin plating, chrome plating, metal oxide coating treatment, chemical conversion treatment, inorganic coating treatment, organic resin coating treatment, and oiling. Shallow drawing processing, DWI processing (Drawing and Wall Ironing Process), DRD processing (Drawing and Redrawing Process) and other processing, the tank bottom and tank body are formed into one, and then the lid is installed on it. [0004] A three-piece can is composed of three parts. Surface-treated steel...

Claims

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Application Information

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IPC IPC(8): C21D9/46B21B3/00C22C38/00C22C38/14
CPCC21D2211/005C21D2211/004C21D8/0426C21D8/0463C22C38/02C22C38/04C22C38/06C21D9/48C22C38/001C22C38/004C21D9/52C21D8/0436
Inventor 小岛克己田中匠多田雅毅荒谷诚岩佐浩树
Owner JFE STEEL CORP
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