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Steel plate for bottle cap, manufacturing method thereof, and bottle cap

A manufacturing method and bottle cap technology, which are applied in the directions of manufacturing tools, bottle/container caps, and tightly capping containers with caps, can solve problems such as reduced formability and poor bottle sealing, and achieve the effect of thinning walls

Active Publication Date: 2018-11-06
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the secondary cold-rolling rate is increased, the formability will be lowered, and bottle sealing failure will occur.

Method used

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  • Steel plate for bottle cap, manufacturing method thereof, and bottle cap
  • Steel plate for bottle cap, manufacturing method thereof, and bottle cap

Examples

Experimental program
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Effect test

Embodiment

[0067] The steel was smelted in a converter and continuously cast to obtain a slab. The steel had the composition shown in Table 1, and the balance was composed of Fe and unavoidable impurities. After heating the obtained slab to 1250°C, hot rolling was performed at a rolling start temperature of 1150°C and a finish rolling temperature of 860°C, and coiling was performed at the coiling temperature shown in Table 2. Next, after removing the scale by pickling, the primary cold rolling rate shown in Table 2 was used for primary cold rolling, and the annealing temperature was carried out in a continuous annealing furnace at the annealing temperature shown in Table 2, and the secondary rolling rate shown in Table 2 was used. The cold rolling ratio performs secondary cold rolling (DR rolling) to obtain a steel plate with a plate thickness of 0.15 to 0.18 mm (levels 1 to 9). For both sides of the obtained steel plate, implement 100 mg / m on each side 2 Cr-plated to get tin-free steel...

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Abstract

Provided are a steel plate for bottle caps having sufficient strength and formability even when thinned and used, a method for manufacturing the same, and a bottle cap. This steel plate for bottle caps has the following component composition, containing C: not less than 0.010% and not more than 0.025%, Si: not more than 0.10%, Mn: not less than 0.05% and not more than 0.50%, P: not more than 0.050%, and S: 0.005% in mass % The above is 0.050% or less, Al: 0.020% or more and 0.070% or less, N: less than 0.0040%, and the remainder is composed of Fe and unavoidable impurities. Regarding the yield strength after heat treatment at 210°C for 15 minutes, the yield strength in the rolling direction is 550 MPa or more, and the yield strength in a direction 45° from the rolling direction in the rolling surface is the yield strength in the rolling direction and the rolling The average value of the yield strength in the direction 90° to the rolling direction in the plane is equal to or less.

Description

technical field [0001] The present invention relates to a steel plate used as a material for a bottle cap of a cork of a glass bottle, a manufacturing method thereof, and a bottle cap. Background technique [0002] Conventionally, glass bottles are often used as containers for beverages such as soft drinks and alcoholic beverages, and metal corks called caps are widely used for narrow-mouthed glass bottles. Usually, the bottle cap is made of thin steel plate as a raw material by compression molding, including a disc-shaped part that blocks the mouth of the bottle, and a pleated part that is arranged around it, by fastening the pleated part to The mouth of the bottle, thereby sealing the bottle. [0003] Strength and formability are examples of properties required for thin steel sheets used as bottle cap materials. Fill bottles with caps with beer, carbonated drinks, and other contents that generate internal pressure. The strength required is such that the cap does not def...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/00B65D41/12C21D9/46C22C38/60
CPCB65D41/12C22C38/00C21D8/0436C21D8/0473C21D9/0068C21D9/48C22C38/004C21D6/005C22C38/001C22C38/02C22C38/04C22C38/06C21D8/0226C21D8/0236C21D8/0263C21D9/46
Inventor 田中匠平口智也小岛克己中丸裕树假屋房亮
Owner JFE STEEL CORP
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