JPS62196335A - Manufacture of steel sheet for easily opened lid excellent in can-openability - Google Patents
Manufacture of steel sheet for easily opened lid excellent in can-openabilityInfo
- Publication number
- JPS62196335A JPS62196335A JP3498886A JP3498886A JPS62196335A JP S62196335 A JPS62196335 A JP S62196335A JP 3498886 A JP3498886 A JP 3498886A JP 3498886 A JP3498886 A JP 3498886A JP S62196335 A JPS62196335 A JP S62196335A
- Authority
- JP
- Japan
- Prior art keywords
- rolled
- steel sheet
- steel
- score
- openability
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000001953 recrystallisation Methods 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 235000013361 beverage Nutrition 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 30
- 208000016803 Extraskeletal Ewing sarcoma Diseases 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、食缶、飲料缶等の容器に用いるイージーオー
プンエンド（以下ＥＯＥと称す）用鋼板の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method of manufacturing an easy open end (hereinafter referred to as EOE) steel plate used for containers such as food cans and beverage cans.
（従来の技術）
最近、各種食品容器等ζ二は適宜な形状の切り込み（ス
コア）を刻印し、取っ手（タブ）を取りつけた蓋すなわ
ちＥＯＥが、簡便に開口できるということから広く利用
されている。このＥＯＥ材料としては、アルミニウムお
よびスチールが用いられているが、開缶性の良さから主
としてアルミニウムが用いられている。しかしながらア
ルミニウムはコスト面で鋼板より相当割高であり、アル
ミニウムＣ二替る、廉価で開は易い鋼板製のイージーオ
ープン蓋の開発が強く望まれ、蓋材料、デザイン面から
多くの検討がなされている。(Prior Art) Recently, various types of food containers, etc., have been widely used because they can be easily opened using lids or EOEs with engraved notches (scores) of appropriate shapes and attached handles (tabs). . Aluminum and steel are used as the EOE material, and aluminum is mainly used because of its good can opening properties. However, aluminum is considerably more expensive than steel plate in terms of cost, and there is a strong desire to develop an easy-open lid made of steel plate that is inexpensive and easy to open as an alternative to aluminum C2, and many studies have been made from the aspects of lid material and design.
ここで材料面から取り組まれている開缶性改善の内容に
ついてみれば、実用化の容易性から、現在のＥＯＥ製造
工程に、そのまま適用しうろことを前提として検討がな
されている。すなわち、現在、実用ζ二供されているＥ
ＯＥは、タブをあらかじめ形成された凸起（リベット）
に装着し、かしめるというものであるため、リベット成
形に必要な張り出し性を確保しつつ、開缶性の改善を果
すといりた観点から研究されている。そして、リベット
成形のできない材料については、その開缶性にまで十分
な関心が払われていないのが実情である。Regarding the improvement of can opening performance that is being tackled from the materials perspective, studies are being conducted on the premise that it can be applied directly to the current EOE manufacturing process due to the ease of practical application. That is, E which is currently in practical use
OE is a tab with pre-formed ridges (rivets)
Since it is attached to a container and crimped, research is being conducted to improve can opening performance while ensuring the necessary overhang for rivet forming. The reality is that sufficient attention has not been paid to the openability of materials that cannot be riveted.
（発明が解決しようとする問題点）
現在まで実用化の容易なことからリベット成形を前提と
し、リベット成形性を確保しつつ、開缶性の改善、すな
わち開缶に必要な力（開缶力）の低減を果すといった観
点から多くの研究がなされてきた。しかしながらアルミ
ニウム裂ＥＯＥに匹敵するような開缶性の優れた鋼板ｆ
ｉＥＯＥは未だ得られておらず、より一層の改善が望ま
れている。(Problems to be solved by the invention) Until now, we have assumed rivet molding because it is easy to put into practical use, and while ensuring rivet formability, we have improved the can opening performance, that is, the force required to open the can (can opening force). ) Many studies have been conducted from the perspective of reducing the However, the steel plate f has excellent can-opening properties comparable to aluminum cracked EOE.
iEOE has not yet been obtained, and further improvement is desired.
（問題点を解決するための手段）
本発明は、開缶性をより一層改善するため、従来リベッ
ト成形性が劣るということから、検討の対象とされなか
った材料をも含めて検討し、リベット成形性にとられれ
なければ、開缶性のより一層の改善を果すことが可能で
あることを見いだした。そしてここに開缶性のより優れ
る材料の製造方法を提供するものである。ここでリベッ
ト成形の不要なＥＯＥ形体、すなわち本発明の方法によ
り製造されたリベット成形性の劣る鋼板をも適用しうる
ＥＯＥの態様としては、タブと蓋を溶接で接合するもの
（特開昭６Ｏ−６２８２５３） 、タブと蓋を接着剤で
接合するもの（包装技術 昭和５９年４月号）を１例と
して挙げることができる。(Means for Solving the Problems) In order to further improve the can-opening properties, the present invention has investigated materials that have not been considered as conventional rivet formability due to their poor rivet formability. It has been found that if moldability is not taken into consideration, it is possible to achieve further improvement in can openability. Here, we provide a method for producing a material with better can opening properties. Here, an EOE form that does not require rivet forming, that is, can be applied to a steel plate with poor rivet formability manufactured by the method of the present invention, is one in which the tab and the lid are joined by welding (Japanese Patent Application Laid-Open No. -628253) and one in which the tab and lid are joined with adhesive (Packaging Technology April 1982 issue) can be cited as an example.
なお特開昭６０−６２８２５３は、ユニメタル（単−全
域）化、低廉化、工程の簡略化をその特徴とするもので
あって、本発明の右眼する開缶性の改善に言及するもの
ではない。以下に従来リベット成形ができないというこ
とで、検討の対象外とされていた範囲をも含めて開缶性
の改蕾を研死し、導き得た本発明の詳細な説明する。Note that JP-A-60-628253 is characterized by uni-metal (single area), low cost, and simplification of the process, and does not refer to the improvement in can openability that is the focus of the present invention. do not have. The following is a detailed explanation of the present invention, which has been able to improve can openability, including areas that were not subject to consideration because conventional rivet forming was not possible.
まず、ＥＯＥの開缶力について説明する。第１図にフル
オープンエンドの開缶力と変位の関係を示す。第１図中
、Ａで示される値はスコアブレイク値（以下ＳＢ値と称
す）、Ｂで示される値はスコアテア値（以下ＳＴ値と称
す）と呼ばれている。First, the opening force of EOE will be explained. Figure 1 shows the relationship between can opening force and displacement for a fully open end. In FIG. 1, the value indicated by A is called a score break value (hereinafter referred to as SB value), and the value indicated by B is called a score tear value (hereinafter referred to as ST value).
ここでＳＴ値は、一般に８Ｂ値より絶対値が大きいこと
より、ＳＴ値が問題とされることが多い。Here, since the absolute value of the ST value is generally larger than the 8B value, the ST value is often considered a problem.
これらの８Ｔ値、ＳＢ値を改善するための材料因子につ
いて多くの研究を重ねた結果、蓋の板厚およびスコア残
厚（第２図−〇）が同一であれば、スコア残部（′＠２
図−ｄ）の破断強度、破断伸びが小さい程、開缶力が改
善される（小さくなる）ことを知り得た。それゆえ破断
強度、破断伸び、いずれをも合せて小さくすることが開
缶力をより改善することＣ：つながり、そのような観点
から材料の研究を進めた。ここでスコア残部の破断強度
に関連するのは、素材強度、およびスコア加工による加
工硬化度であり、素材強度、加工硬化度に関連する因子
としては、鋼組成（含有量、存在状態）、製造履歴（熱
処理条件、加工履歴等）等である。また開缶力に影響を
及ぼすもう一つの因子であるスコア部の破断伸びも、鋼
組成、製造履歴の影響をうける。これら鋼組成、製造履
歴を組み合せることＣ二より、種々の材料を製造しうる
が、それら種々の材料について、開缶力に影響を及ぼす
因子であるスコア残部破断強度（素材強度、加工硬化度
）とスコア残部破断伸びの関連を、リベット成形の可能
な範囲について見れば以下のようである。鋼は、一般的
に軟質なものは延性に富み、硬質なものは延性が乏しい
という特性を有するが、スコア残部の破断強度を小さく
する目的で蓋素材を軟質なものとすれば、スコア残部に
は必要以上に延性が残存し、また破断伸びを小さくする
目的で、素材を硬質なものとすれば、スコア残部の破断
強度は大きなものとなり、いずれも開缶性を十分改善す
ることができない。このようにスコア残部破断強度、破
断伸びを同時に、開缶性改善に好ましいものとするのは
難しいのが実情である。そのようななかで、本発明は、
多くの材料について研究を行い、リベット成形性にとら
れれず研究した結果、スコア部破断強度、スコア部破断
伸びいずれもが小さなものとなる鋼板の製造方法を提供
するものである。本発明の骨子は以下のごとくである。As a result of many studies on material factors for improving these 8T and SB values, we found that if the thickness of the lid and the remaining score thickness (〇 in Figure 2) are the same, the remaining score ('@2
It was found that the smaller the breaking strength and breaking elongation in Figure d), the more the can opening force was improved (became smaller). Therefore, reducing both the breaking strength and elongation at break will further improve the can opening force, and we proceeded with material research from this perspective. Here, what is related to the breaking strength of the remainder of the score is the material strength and the degree of work hardening due to score processing, and the factors related to the material strength and degree of work hardening are steel composition (content, state of existence), manufacturing history (heat treatment conditions, processing history, etc.), etc. The elongation at break of the score section, which is another factor that affects can opening force, is also affected by the steel composition and manufacturing history. By combining these steel compositions and manufacturing histories, various materials can be manufactured, but for these various materials, the score residual breaking strength (material strength, work hardening degree), which is a factor that affects can opening force, ) and the elongation at break of the score remainder, when looking at the possible range of rivet forming, the relationship is as follows. Generally speaking, soft steel has high ductility, while hard steel has poor ductility. However, if the lid material is made soft in order to reduce the breaking strength of the remaining score, the remaining score will be less ductile. However, if the material is made of a hard material for the purpose of reducing the elongation at break, the break strength of the remaining part of the score becomes large, and neither of these methods can sufficiently improve can opening properties. The reality is that it is difficult to simultaneously make the score remainder breaking strength and breaking elongation favorable for improving can openability. Under such circumstances, the present invention
As a result of conducting research on many materials, without focusing on riveting formability, the present invention provides a method for manufacturing a steel plate that reduces both the breaking strength and score elongation at break. The gist of the present invention is as follows.
すなわち鋼組成を、スコア加工のような強度の加工をし
ても、破断強度の増加がきわめて少い組成とし、その冷
延鋼板を箱型式で再結晶焼鈍し、その後２１〜４５９６
の圧延率で調質圧延することを特徴とする。以下に、鋼
組成、製造方法を定める理由Ｃ二ついて説明する。炭素
に関しては、熱処理条件を調整して、素材強度を軟質な
ものとしても、その量が多くなると加ニジ−よる硬化は
大きく進展し目的とする破断強度の小さいスコア残部を
得ることができない。その点から上限を０．０３％にす
る必要がある。マンガンも炭素と同様であり、スコア残
部の低強度化をはかるうえでできるかぎり少い方が好ま
しいが、不可避的に存在する硫黄による熱間脆性を防止
するに最低限必要な量ということから、その量を０．０
３〜０．１５ ％とすることが必要である。燐も炭素、
マンガンと同様でありスコア残部の硬質化をきたすため
、その上限を０．０２％とした。アルミニウムは脱酸の
目的で０．ＯＬ％以上添加する。一方含有量が多くなる
とコスト高となり、また介在物量が多くなるため、上限
を０．１０％とした。酸素量は、その含有量が多くなる
と酸化物系介在物が増え、スコア加工時のクラック発生
誘因となるので、ｏ、ｏｉ％以上にする必要がある。In other words, the steel composition is made such that the fracture strength increases very little even when subjected to strength processing such as score processing, and the cold-rolled steel sheet is recrystallized in a box type annealing, and then 21 to 4596
It is characterized by temper rolling at a rolling rate of . Below, two reasons for determining the steel composition and manufacturing method will be explained. Regarding carbon, even if the heat treatment conditions are adjusted to make the material soft, if the amount of carbon is large, hardening due to carbonization will progress greatly and it will not be possible to obtain the desired score remainder with a low breaking strength. From this point of view, it is necessary to set the upper limit to 0.03%. Manganese is the same as carbon, and it is preferable to use as little as possible in order to reduce the strength of the remainder of the score, but since it is the minimum amount necessary to prevent hot embrittlement due to the unavoidable presence of sulfur, The amount is 0.0
It is necessary to set it to 3-0.15%. Phosphorus is also carbon,
Since it is similar to manganese and causes hardening of the remainder of the score, the upper limit was set at 0.02%. Aluminum is used for the purpose of deoxidation. Add OL% or more. On the other hand, if the content increases, the cost increases and the amount of inclusions increases, so the upper limit was set at 0.10%. The amount of oxygen needs to be at least 0.05%, since as the content increases, the number of oxide inclusions will increase, which will cause cracks to occur during score processing.
また、上記組成の冷延鋼板の再結晶焼鈍を箱型式とする
のは、連続焼鈍により製造したものは、箱型焼鈍ｌ二よ
り製造したものより、加工による硬化がきわめて大きく
なるからである。この理由としては、連続焼鈍材の場合
、固溶炭素量が多いこと、結晶粒度が小さいこと、微細
析出物が多数分散゛しているためと考えられる。またこ
の箱型焼鈍の温度は、鋼中（二保護ガス中の窒素が侵入
し、鋼を硬質化するのを少くするため、再結晶温度以上
、６６０℃以下が好ましい。また、焼鈍後２１〜４５％
の圧延率で調質圧延する理由は以下のごとくである。２
１％未満の場合、スコア加工したのちもスコア残部には
、必要以上に延性が残存し、開缶力の十分な改善が果せ
ない。それゆえ、開缶力を好ましいものとするには、最
低２１％の圧延率で調質圧延し、素材の延性を低減して
おくことが必要である。また、上限は、それ以上の圧延
率で圧延したものは、スコア加工時、クラックが入りや
すくなるからである。Further, the reason why the recrystallization annealing of the cold rolled steel sheet having the above composition is performed in a box type is because those manufactured by continuous annealing are much more hardened by working than those manufactured by box type annealing. The reason for this is thought to be that in the case of continuously annealed materials, the amount of solid solute carbon is large, the grain size is small, and a large number of fine precipitates are dispersed. In addition, the temperature of this box-type annealing is preferably higher than the recrystallization temperature and lower than 660°C in order to reduce the intrusion of nitrogen in the protective gas into the steel and hardening of the steel. 45%
The reason for temper rolling at a rolling rate of is as follows. 2
If it is less than 1%, even after score processing, the remaining portion of the score will have more ductility than necessary, and the can opening force will not be sufficiently improved. Therefore, in order to obtain a preferable opening force, it is necessary to perform temper rolling at a rolling reduction of at least 21% to reduce the ductility of the material. Further, the upper limit is set because products rolled at a rolling rate higher than the upper limit tend to crack during scoring.
なお、再結晶焼鈍後、２０９６以上の圧延率で調質圧延
を施すものとして、特開昭６０−１２１２２４があり、
この発明の要旨は、２０％以上の圧延率で調質圧延する
こと（二より、素材の硬貨化をはかり、それによる蓋材
の薄肉化Ｃ二より、開缶力を改善することを骨子として
いる。一方本願は、スコア加工部の破断強度、破断伸び
に着目し、蓋の板厚の薄肉化を図ることなく開缶力の改
善を果すものであり、特開昭６０−１２１２２４と蓋強
度、板厚が同じ本発明材を比較すれば、本発明材の開缶
力はより優れたものとなる。In addition, there is Japanese Patent Application Laid-Open No. 60-121224, which performs skin pass rolling at a rolling ratio of 2096 or more after recrystallization annealing.
The gist of this invention is to perform skin pass rolling at a rolling rate of 20% or more (secondly, to make the material into coins, thereby making the lid material thinner; and secondly, to improve the opening force of the can. On the other hand, the present application focuses on the breaking strength and breaking elongation of the score processed part, and improves the can opening force without reducing the thickness of the lid. When comparing the materials of the present invention having the same plate thickness, the can opening force of the material of the present invention is superior.
ここで、本発明鋼板と他の鋼板について調べた強加工時
の破断強度を第３図に示す。第３図は、第１表≦二おい
てＡ−１の調質圧延材および、八−５、Ｄ焼鈍材を圧延
加工し、各圧延率における破断強度を比較したものであ
る。第３図において、本発明鋼板Ａ−１の破断強度は本
発明の範囲を外れる鋼板Ａ−５、Ｄに比べ小さなものと
なっている。Here, FIG. 3 shows the fracture strength during heavy working, which was investigated for the steel sheet of the present invention and other steel sheets. FIG. 3 shows a comparison of the breaking strength at each rolling rate by rolling the temper-rolled material of A-1 and the annealed material of 8-5 and D in Table 1≦2. In FIG. 3, the breaking strength of the steel plate A-1 of the present invention is smaller than that of the steel plates A-5 and D, which are outside the scope of the present invention.
（実施イタ１１） 以下に本発明の実施例について述べる。(Implementation Ita 11) Examples of the present invention will be described below.
第１表に示すＡ−１、Ｃ，Ｄ、Ｈの組成の鋼４種を転炉
で溶製し、連続鋳造にてスラブとした後、熱間圧延し、
板厚２．０ ｍｍの熱延板とした。なお、Ａ−２，Ａ−
３，Ａ−４，Ａ−５、ＢはＡ−１と同一チャージのもの
である。Ａ−１，Ａ−２、Ａ−３，Ａ−４，Ａ−５、Ｃ
，Ｄ、Ｅは、第１表に示す調質圧延率で調質圧延した時
に最終板厚が０．２閣となるように、冷間圧延板厚を仕
上げ、そののち第１表中の焼鈍方式および調質正進率で
調質圧延材を作成した。Ｂは、２ｍｍの熱延板を０．６
ｍｍまで冷間圧延し、そののち脱炭焼鈍、冷間圧延、
箱型焼鈍、調質圧延により０．２ ｍｍの調質圧延材を
作成した。さらに上記調質圧延材を電解クロム酸処理後
、２１１（直径６ ａ４ｍｍ缶用）のフルオーブンエン
ド（二加工した。タブは接着剤（二て蓋に接合し、開缶
力の良否はスコア残厚４５μｍの時のＳＴ値で評価した
。Four types of steel with compositions A-1, C, D, and H shown in Table 1 are melted in a converter, made into a slab by continuous casting, and then hot rolled,
A hot rolled sheet with a thickness of 2.0 mm was used. In addition, A-2, A-
3, A-4, A-5, and B are of the same charge as A-1. A-1, A-2, A-3, A-4, A-5, C
, D, and E are cold-rolled sheets with a final thickness of 0.2 mm when temper-rolled at the skin-pass rolling rates shown in Table 1, and then annealed as shown in Table 1. A temper-rolled material was prepared using the method and thermal progression rate. B is a 2mm hot-rolled plate with a thickness of 0.6
Cold rolled to mm, then decarburized annealed, cold rolled,
A 0.2 mm temper rolled material was produced by box annealing and temper rolling. Furthermore, after the temper-rolled material was treated with electrolytic chromic acid, the full oven end of 211 (for cans with a diameter of 6 A4 mm) was processed. Evaluation was made using the ST value when the thickness was 45 μm.
（発明の効果）
第１表の結果から、本発明に従い製造した鋼板は開缶性
Ｃ：優れており、この値は、アルミニウムＥＯＥの開缶
力と同等のものである。(Effects of the Invention) From the results shown in Table 1, the steel plate manufactured according to the present invention has excellent can-opening force C, and this value is equivalent to the can-opening force of aluminum EOE.
第１図は、フルオーブンエンド′の開缶力と変位の関係
を示すものである。９２図は、スコア残厚Ｃ、スコア残
部ｄを示す模式図である。第３図は、圧延加工度と破断
強度の関係を示し、Ａ−１が本発明に従い製造した鋼板
で、Ａ−５、Ｄは比較材である。FIG. 1 shows the relationship between can opening force and displacement at the full oven end. FIG. 92 is a schematic diagram showing the remaining score thickness C and the remaining score d. FIG. 3 shows the relationship between rolling degree and breaking strength, in which A-1 is a steel plate manufactured according to the present invention, and A-5 and D are comparative materials.
Claims (1)
燐０．０２％以下、アルミニウム０．０２〜０．１０％
、酸素０．０２％以下を含有し、残部が鉄および不可避
的不純物からなる熱間圧延、冷間圧延された鋼板を箱型
焼鈍し、次いで２１〜４５％の圧延率で調質圧延するこ
とを特徴とする開缶性の優れたイージーオープン蓋用鋼
板の製造方法。Carbon 0.03% or less, manganese 0.05-0.15%,
Phosphorus 0.02% or less, aluminum 0.02-0.10%
, box annealing a hot-rolled and cold-rolled steel plate containing 0.02% or less of oxygen, with the balance consisting of iron and unavoidable impurities, and then skin-pass rolling at a rolling rate of 21 to 45%. A method for producing a steel plate for easy-open lids with excellent can opening properties.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3498886A JPS62196335A (en) | 1986-02-21 | 1986-02-21 | Manufacture of steel sheet for easily opened lid excellent in can-openability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3498886A JPS62196335A (en) | 1986-02-21 | 1986-02-21 | Manufacture of steel sheet for easily opened lid excellent in can-openability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62196335A true JPS62196335A (en) | 1987-08-29 |
Family
ID=12429522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3498886A Pending JPS62196335A (en) | 1986-02-21 | 1986-02-21 | Manufacture of steel sheet for easily opened lid excellent in can-openability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62196335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754101A (en) * | 1993-08-13 | 1995-02-28 | Toyo Kohan Co Ltd | Steel sheet for thinning/deep drawing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61243123A (en) * | 1985-04-19 | 1986-10-29 | Kawasaki Steel Corp | Production of black plate for tin plate for easy-to-open end |
| JPS61272324A (en) * | 1985-05-29 | 1986-12-02 | Nippon Steel Corp | Manufacture of steel sheet for easy open lid superior in can openability |
| JPS6280224A (en) * | 1985-10-02 | 1987-04-13 | Kawasaki Steel Corp | Manufacture of black plate for easy-opening lid |
-
1986
- 1986-02-21 JP JP3498886A patent/JPS62196335A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61243123A (en) * | 1985-04-19 | 1986-10-29 | Kawasaki Steel Corp | Production of black plate for tin plate for easy-to-open end |
| JPS61272324A (en) * | 1985-05-29 | 1986-12-02 | Nippon Steel Corp | Manufacture of steel sheet for easy open lid superior in can openability |
| JPS6280224A (en) * | 1985-10-02 | 1987-04-13 | Kawasaki Steel Corp | Manufacture of black plate for easy-opening lid |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754101A (en) * | 1993-08-13 | 1995-02-28 | Toyo Kohan Co Ltd | Steel sheet for thinning/deep drawing |
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