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Steel plate for can lid and manufacturing method thereof

A manufacturing method and technology of steel plates, applied in the direction of manufacturing tools, applications, household appliances, etc., can solve problems such as easy deformation, and achieve the effect of suppressing deformation

Active Publication Date: 2019-06-07
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the can lid is composed of many planes, and it is easily deformed under pressure on the plane.

Method used

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  • Steel plate for can lid and manufacturing method thereof
  • Steel plate for can lid and manufacturing method thereof
  • Steel plate for can lid and manufacturing method thereof

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Experimental program
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Effect test

Embodiment

[0069] Hereinafter, examples of the present invention will be described. First, steel with the composition shown in Table 1 was melted, the slab was heated at the slab heating temperature shown in Tables 2 to 4, and hot rolled at the coiling temperature shown in Tables 2 to 4. , after cold rolling, recrystallization annealing was performed, and temper rolling was performed at the elongation shown in Tables 2-4.

[0070] It should be noted that in Table 1, steel K is blank. In Tables 2 to 4, numbers 34 to 37 are empty numbers.

[0071] [Table 1]

[0072]

[0073] [Table 2]

[0074]

[0075] [table 3]

[0076]

[0077] [Table 4]

[0078]

[0079] Then, artificial aging treatment was performed at 210° C. for 10 minutes. For the steel plate obtained above, the lower yield strength (YP ), yield point elongation (YPEl). These results were judged to be acceptable or not according to Judgment Condition 1 and Judgment Condition 2 below. Here, the case where the jud...

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Abstract

A steel plate for a can end and a manufacturing method thereof, wherein the steel plate for a can end contains C: 0.020-0.060%, Si: 0.01-0.05%, Mn: 0.20-0.60%, P: 0.001-0.100%, S : 0.008~0.020%, N: 0.0130~0.0190%, Al: 0.005~{-4.20×N+0.110}%, when Mnf=Mn-1.7×S, Mnf: 0.30%~0.58%, the rest is composed of Fe and Avoided impurity composition, after aging treatment at 210°C for 10 minutes, lower yield strength YP (N / mm 2 ) and yield point elongation YPEl (%) satisfy YP≥355, YPEl≥2 and YPEl≥(60 / (YP-355))+2 and YP≤4.09×YPEl+476.

Description

technical field [0001] The present invention relates to a steel plate for can lids of food cans, beverage cans, etc., and a manufacturing method thereof. Background technique [0002] Food cans and beverage cans are heat-sterilized for their contents during the manufacturing stage. At this time, a pressure difference is generated inside and outside the tank, and the pressure acts on the tank body. The tank body is mainly composed of a tank body and a tank cover. Among them, the shape of the can body is a cylindrical shape that can easily disperse stress, so even if pressure is applied, it is rarely deformed. On the other hand, the can lid has many parts composed of planes, and is easily deformed under pressure on the planes. Excessive deformation of the can end is disadvantageous, and it is desirable to provide a can end that is not easily deformed even when subjected to pressure. [0003] As a method of suppressing the deformation of the can end with respect to the pres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/00C21D9/46C22C38/06
CPCC21D9/46B21D51/44C21D8/0473C21D9/48C21D2211/004C22C38/06C21D8/0273C22C38/001C22C38/02C22C38/04C21D8/0226C21D8/0236B21D51/26
Inventor 小岛克己平口智也田中匠中丸裕树
Owner JFE STEEL CORP