JPS6051537B2 - Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowability - Google Patents
Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowabilityInfo
- Publication number
- JPS6051537B2 JPS6051537B2 JP9969781A JP9969781A JPS6051537B2 JP S6051537 B2 JPS6051537 B2 JP S6051537B2 JP 9969781 A JP9969781 A JP 9969781A JP 9969781 A JP9969781 A JP 9969781A JP S6051537 B2 JPS6051537 B2 JP S6051537B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- rolled steel
- steel
- enamel
- aluminum killed
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Description
【発明の詳細な説明】
この発明は、ホーロー性に優れたアルミキルド冷延鋼板
の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an aluminium-killed cold-rolled steel sheet having excellent enamel properties.
ハ’冷間 一 、、Ｌ、、讐ハ人石’加１仁小上−−−
ｎ− なわち、耐爪とび性およびホーロー密着性を
向上させる方法としては、次の方法が知られている。HA'Reima 1,, L,, Enemy HA Jinseki'K1 Jin Kogami---
n- That is, the following method is known as a method for improving nail-skipping resistance and enamel adhesion.
（１）特公昭５５−２４４６号公報に開示されるように
、熱延巻取温度を高くして粗大炭化物を形成せしめ、冷
間圧延時のこれら炭化物の破壊、マトリックスとの剥離
等によつて生じたボードに水素を吸蔵させ、耐爪とび性
を向上させる方法。（２）特公昭５５−４２１３３号公
報に開示されるように、真空脱ガス法によりＣを０．０
２％以下にして、ＢおよびＲＥＭを添加する方法。（３
） 特公昭５５−１２１６４号公報に開示されるように
、真空脱ガス法によりＣを０．０２％以下にしてＢを添
加し、Ｃを０．００５％以下に脱炭焼鈍する方法。(1) As disclosed in Japanese Patent Publication No. 55-2446, coarse carbides are formed by increasing the hot-rolling temperature, and these carbides are destroyed during cold rolling, separated from the matrix, etc. A method of absorbing hydrogen into the resulting board to improve its resistance to nail skipping. (2) As disclosed in Japanese Patent Publication No. 55-42133, C is reduced to 0.0 by vacuum degassing method.
A method of adding B and REM to 2% or less. (3
) As disclosed in Japanese Patent Publication No. 55-12164, a method in which C is reduced to 0.02% or less by vacuum degassing, B is added, and C is decarburized and annealed to 0.005% or less.
しかし、上述した（１）から（３）の方法では、耐爪と
び性およびホーロー密着性は必ずしも満足てきるもので
はなかつた。本願発明者等は、上述したような観点から
、アルミキルド冷延鋼板の耐爪とび性とホーロー密着Ｊ
性につき種々検討を行つた結果、Ｂを添加したアルミキ
ルド冷延鋼板の成分および製造条件を適正にすることに
よつて安価に、しかも耐爪とび性およびホーロー密着性
に優れたアルミキルド冷延鋼板を製造することができる
といつた知見を得た。However, in the above-mentioned methods (1) to (3), the nail-skipping resistance and enamel adhesion were not necessarily satisfactory. From the above-mentioned viewpoints, the inventors of the present application have investigated the nail-skipping resistance of aluminum-killed cold-rolled steel sheets and the enamel adhesion J.
As a result of various studies on properties, we found that by optimizing the composition and manufacturing conditions of the aluminium-killed cold-rolled steel sheet to which B is added, we can produce an aluminium-killed cold-rolled steel sheet that is inexpensive and has excellent nail-skipping resistance and enamel adhesion. We obtained the knowledge that it can be manufactured.
ｉ この発明は、上記知見に基づきなされたものであつ
て、残部Ｆｅおよび不可避不純物元素からなり、しかも
、の場合には、
（以上重量％）なる関係を満足するアルミキルド鋼を熱
間圧延後５５０〜７２０℃で巻取り、通常の方法によつ
て酸洗し、冷間圧延後焼鈍することに特徴を有する。i This invention was made based on the above-mentioned knowledge, and the aluminum killed steel is made of aluminum with the remainder being Fe and unavoidable impurity elements, and which satisfies the following relationship: It is characterized by being wound up at ~720°C, pickled by a conventional method, and annealed after cold rolling.
この発明における各成分の限定理由について説明する。The reasons for limiting each component in this invention will be explained.
（１）ＣＣは、鋼中においてカーバイドとして存在する
が、冷間圧延中にカーバイドがマトリックスーから剥離
したり、カーバイドの破壊によつてボイドを発生するこ
とにより、耐爪とび性を向上させる作用をなすが、その
含有量が０．０２％未満では、前述した効果が失われる
のでＣ量の下限を０．０２％とした。(1) CC exists in the form of carbide in steel, but during cold rolling, the carbide peels off from the matrix and creates voids due to the destruction of the carbide, thereby improving the nail-skipping resistance. However, if the C content is less than 0.02%, the above-mentioned effects are lost, so the lower limit of the C content was set at 0.02%.
一方、Ｃ量が０．１０％を越えるＪと製品が硬質となつ
てブレス成形性が悪くなり、ホーロー用鋼板として好ま
しくないので、その上限を０．１０％とした。（２）Ｍ
ｎ
Ｍｎは、Ｓによる熱間脆性を防止するために−Ｓ量の１
皓程度のＭｎ量が必要であるが、ブレス成形性、ホーロ
ー焼成歪の面からはできる限りその添加量は少ない方が
好ましい。On the other hand, if the C content exceeds 0.10%, the product becomes hard and the press formability deteriorates, making it undesirable as a steel plate for enameling, so the upper limit was set at 0.10%. (2) M
nMn is 1 of -S amount in order to prevent hot embrittlement caused by S.
Although it is necessary to add an amount of Mn to a certain level, it is preferable to add as little Mn as possible in terms of press moldability and enamel firing distortion.
そこで、これらの点を考慮して、この発明ではｈの添加
量を０．０５〜０．５０％の範囲に限定した。
ク（３）ＰおよびＳＰおよびＳは、不純物元素としてあ
る程度の量の含有は避けられないが、これらはホーロー
前処理における酸洗速度に影響を及ぼし、その含有量が
０．００５％未満では酸洗速度が遅くなりホーロー前処
理作業性が悪くなる。Therefore, in consideration of these points, in the present invention, the amount of h added is limited to a range of 0.05 to 0.50%.
(3) A certain amount of P, SP and S is unavoidable as impurity elements, but they affect the pickling speed in the enamel pretreatment, and if their content is less than 0.005%, the acid Washing speed becomes slow and enamel pretreatment workability deteriorates.
一方、その含有量が多い場合にはブレス成形性が悪くな
るので、この発明では、ＰとＳの含有量を０．００５〜
０．０３０％とした。（４）Ｎ
Ｎは、鋼中に不可避的に含まれるもので、鋼を硬質にし
、かつ時効硬化を促進させる作用をなすので、その含有
量は少ない方が好ましい。On the other hand, if the content is large, the press moldability deteriorates, so in this invention, the content of P and S is set to 0.005 to 0.005.
It was set to 0.030%. (4) N Since N is unavoidably contained in steel and has the effect of making the steel hard and promoting age hardening, it is preferable that its content be small.
しかし、０．００１０％未満にすることは困難てあるの
で、この発明では、その範囲を０．００１０〜０．０１
００％とした。（５）ＳＯｌＡｌ
ＳＯｌＡｌは、鋼をキルド鋼にするとともに固溶ＮをＡ
ｌＮとして析出させ製品を非時効性にするために必要な
ものであり、少なくとも０．００５％以上は不可欠であ
る。However, it is difficult to reduce the amount to less than 0.0010%, so in this invention, the range is set to 0.0010 to 0.01%.
It was set as 00%. (5) SOlAl SOlAl makes the steel into killed steel and replaces solid solution N with A.
It is necessary to precipitate as IN and make the product non-aging, and at least 0.005% or more is essential.
一方、多量に添加すると製造原価が高くなるので、この
発明では、０．００５〜０．１００％とした。On the other hand, if added in a large amount, the manufacturing cost will increase, so in this invention it is set at 0.005 to 0.100%.
（６）Ｂ
Ｂは、Ｃと同様に耐爪とび性を向上させるために必要な
元素であり、第１図に示すように、Ｃ量が０．０２％以
上の時は、Ｂを０．００１５％以上添加することによつ
て爪とび発生を防止することができることがわかる。(6) B B, like C, is an element necessary to improve the nail-skipping resistance, and as shown in FIG. 1, when the C content is 0.02% or more, B is added to 0. It can be seen that the occurrence of nail skipping can be prevented by adding 0.015% or more.
一方、Ｂを多量に添加すると製造原価が高くなるのみで
なく、スラブ特性が不安定となるので、この発明ではＢ
量の添加範囲を０．００１５〜０．００５０％とした。
さらに、Ｂは、鋼中において固溶ＮをＢＮとして固定す
るが、全Ｂ量がＢＮになるのてはなく、その約半分の量
がＮと結合すると考えられる。従つて、前記成分範囲で
は鋼中に固溶Ｎが残る場合が多く、アルミキルド冷延鋼
板の特徴の一つである非時効性が失われる。そこで種々
検討を重ねた結果、を満足するようにすれば、非時効性
にすることができることがわかつた。On the other hand, adding a large amount of B not only increases the manufacturing cost but also makes the slab properties unstable.
The addition range was 0.0015% to 0.0050%.
Furthermore, although B fixes solid solution N as BN in steel, it is thought that the entire amount of B does not become BN, but about half of that amount combines with N. Therefore, in the above composition range, solid solution N often remains in the steel, and the non-aging property, which is one of the characteristics of aluminum-killed cold-rolled steel sheets, is lost. As a result of various studies, it was found that non-aging properties can be achieved by satisfying the following conditions.
また、（Ｎ％−０．５・Ｂ−Ｂ％）が０．０００５％未
満、すなわち、固溶Ｎ量が０．０００５％未満であれば
鋼板は実用上非時効性であるので、前述した制限は必要
としない。従つて、（Ｎ％−０．５・暑・Ｂ％）が０．
０００５％以上の場合は、ＳＯｌＡｌ％（Ｎ％−０．５
・暑・Ｂ％）を２．０Ｘ１０−５以上とした。（７）Ｃ
Ｕ
Ｃｕは、ホーロー密着性およびホーロー前処理での酸洗
速度に影響を及ぼす元素であり、０．０１０％未満では
ホーロー密着性が悪く、一方、０．０５０％以上では酸
洗速度が遅くなり、ホーロー前処理作業性が悪くなる。Furthermore, if (N%-0.5・B-B%) is less than 0.0005%, that is, the amount of solid solute N is less than 0.0005%, the steel plate is practically non-aging, so as mentioned above, No restrictions are required. Therefore, (N%-0.5・heat・B%) is 0.
0005% or more, SOlAl%(N%-0.5
- Heat/B%) was set to 2.0X10-5 or more. (7)C
U Cu is an element that affects the enamel adhesion and the pickling speed in the enamel pre-treatment.If it is less than 0.010%, the enamel adhesion will be poor, while if it is 0.050% or more, the pickling speed will be slow. , the enamel pretreatment workability deteriorates.
従つて、この発明では、Ｃｕの添加範囲を０．０１０〜
０．０５０％とした。この発明は、上述した各成分を含
有した鋼を通常の手段により熱間圧延後、５５０〜７２
０′Ｃで巻取るが、これは、５５０℃未満ではカーバイ
ドが微細に析出し、耐爪とび性が低下するためであり、
一方、７２０′Ｃを越えると熱延鋼板の脱スケールが困
難になるためである。Therefore, in this invention, the addition range of Cu is 0.010~
It was set to 0.050%. In this invention, after hot rolling steel containing each of the above-mentioned components by normal means,
It is wound at 0'C because below 550C, carbide precipitates finely and the nail-skipping resistance decreases.
On the other hand, if the temperature exceeds 720'C, it becomes difficult to descale the hot rolled steel sheet.
仕上温度は特に限定しないが８００〜９００℃が好まし
い。この後、酸洗し、冷間圧延後、再結晶焼鈍する。再
結晶焼鈍法としては、通常の箱焼鈍法、連続焼鈍法の何
れても良いが、連続焼鈍の場合にはライン内で固溶Ｃの
析出処理を行うことが好ましい。このような方法で製造
されたアルミキルド冷延鋼板は、下釉薬を使用する２回
掛ホーロー用鋼板に適したものであるが、上釉薬を直接
鋼板に密着させる直接１回掛ホーロー用鋼板としては、
カーボンボイリングを防止するために、Ｃ量が０．０１
％以下になるように脱炭焼鈍を行う必要がある。次に、
この発明の実施例について説明する。The finishing temperature is not particularly limited, but is preferably 800 to 900°C. After that, it is pickled, cold rolled, and recrystallized annealed. The recrystallization annealing method may be either a normal box annealing method or a continuous annealing method, but in the case of continuous annealing, it is preferable to perform precipitation treatment of solid solution C within the line. Aluminum killed cold-rolled steel sheets manufactured by this method are suitable for double-layer enameling steel sheets that use a lower glaze, but are not suitable for direct single-layer enameling steel sheets that use a top glaze to adhere directly to the steel sheet. ,
To prevent carbon boiling, the amount of C is 0.01.
% or less. next,
Examples of this invention will be described.
第１表に示す化学成分を有する鋼を仕上温度８７０℃、
巻取温度５６０℃で熱間圧延した後、酸洗し、０．８Ｔ
０ｎに冷間圧延した。この後、焼鈍（箱焼鈍、連続焼鈍
、脱炭焼鈍）し、最終的に１％の調質圧延を行つた。こ
のようにして製造したアルミキルド鋼板の機械的性質お
よびホーロー性の結果を第２表に示す。第２表の焼鈍方
法において、ＢＡとは箱焼鈍を、ＣＡとは連続焼鈍を、
そして、ＤＣとは脱炭焼鈍を夫々意味する。Steel having the chemical composition shown in Table 1 is finished at a finishing temperature of 870°C.
After hot rolling at a coiling temperature of 560°C, pickling and 0.8T
It was cold rolled to 0n. After this, annealing (box annealing, continuous annealing, decarburization annealing) was performed, and finally 1% temper rolling was performed. Table 2 shows the results of the mechanical properties and enamel properties of the aluminum-killed steel sheets produced in this manner. In the annealing method in Table 2, BA means box annealing, CA means continuous annealing,
And DC means decarburization annealing.
また、爪とび量は加湿雰囲気中（Ｄ．Ｐ．：３０℃）で
焼成した場合の爪とび発生個数であり、ホーロー密着性
は、７０℃の温度を有する濃度１５％のＨ２ＳＯ４によ
つて２分間ホーロー鋼板を酸洗したときの下釉薬の密着
性をＰＥＩ密着性試験機で測定した値である。さらに、
連続焼鈍材の場合は、熱延巻取温度を６８０℃とした。
第２表から明らかなように、比較鋼Ｅは、Ｃ量が本発明
外であり、耐爪とび性が悪く多数の爪とびが発生してい
る。In addition, the amount of nail skipping is the number of nails that occur when firing in a humidified atmosphere (D.P.: 30°C), and the adhesion of the enamel is 2. This is a value measured using a PEI adhesion tester to measure the adhesion of the lower glaze when pickling an enameled steel plate for minutes. moreover,
In the case of continuously annealed material, the hot rolling coiling temperature was 680°C.
As is clear from Table 2, Comparative Steel E has a C content that is outside the scope of the present invention, and has poor nail-skipping resistance, with a large number of nail-skippings occurring.
また、比較鋼Ｅは、Ｃ量が少一ないために、連続焼鈍で
固溶Ｃの析出処理を行つても固溶Ｃが十分に析出しない
ために、エージングインデックス（ＡｇｉｎｇＩｎｄｅ
ｘ）ＡＩＩが高く非時効性にはなつていない。比較鋼Ｆ
は、Ｂ量が本発明範囲を外れて低いために耐爪とび性が
悪く、！ホーロー用銅板としては不適当なものである。
比較鋼Ｇは、Ｃｕ量およびＳＯｌＡｌ％×（Ｎ％−０．
５・，ｌ−？・Ｂ％）が本発明範囲外であり、ホーロー
密着性および耐時効性に劣つている。さらに、比較鋼Ｈ
は、Ｂを添加しないアルミキルド冷間鋼板であつて、耐
爪とび性、ホーロー密着性ともに悪く、ホーロー用鋼板
として使用することができない。これに対して、本発明
Ｗ４ＡからＤは、何れも、爪とび発生は全く見られず、
ブレス成形性に優れ、しかも、ホーロー密着性に著しく
優れた非時効性冷延鋼板であることがわかる。尚、本発
明鋼Ａの連続焼鈍材でＡ−１が１．７ｋ９／Ｖｉとなつ
ているが、この値では実用上非時効性であり、時効性に
ついては全く問題はない。以上説明したように、この発
明によれば、安価に、しかもホーロー性に優れたホーロ
ー用アルミキルド冷延鋼板を製造することができるとい
つたきわめて有用な効果がもたらされる。In addition, since comparative steel E has a small amount of C, solid solute C does not precipitate sufficiently even if it is precipitated by continuous annealing.
x) AII is high and it is not time-limited. Comparative steel F
Because the amount of B is so low that it is out of the range of the present invention, the resistance to nail skipping is poor. It is unsuitable as a copper plate for enamel.
Comparative steel G has Cu amount and SOlAl%×(N%-0.
5.,l-?・B%) is outside the scope of the present invention, and the enamel adhesion and aging resistance are poor. Furthermore, comparative steel H
is an aluminium-killed cold-worked steel sheet without the addition of B, which has poor nail-skipping resistance and enamel adhesion, and cannot be used as a steel sheet for enamel. On the other hand, in W4A to D of the present invention, no occurrence of nail skipping was observed at all,
It can be seen that this is a non-aging cold rolled steel sheet with excellent press formability and extremely good enamel adhesion. Incidentally, A-1 of the continuously annealed material of the steel A of the present invention has a value of 1.7k9/Vi, but this value is practically non-aging, and there is no problem at all with respect to aging. As explained above, according to the present invention, extremely useful effects such as being able to manufacture an aluminum killed cold-rolled steel sheet for enameling with excellent enameling properties at low cost are brought about.
第１図は、Ｂ量と爪とび発生個数との関係を示す図であ
る。FIG. 1 is a diagram showing the relationship between the amount of B and the number of skipped nails.
Claims (1)
１５〜０．００５０％、 Ｃｕ：０．０１０〜０．０５０％、 残部Ｆｅおよび不可避不純物元素からなり、しかも、Ｎ
％−０．５・１４／１１・Ｂ％＞０．０００５％の場合
には、ＳｏｌＡｌ％×（Ｎ％−０．５・１４／１１・％
）＞２．０×１０＾−＾５（以上重量％）なる関係を満
足するアルミキルド鋼を熱間圧延後５５０〜７２０℃で
巻取り、通常の方法によつて酸洗し、冷間圧延後焼鈍す
ることを特徴とするホーロー性に優れたアルミキルド冷
延鋼板の製造法。[Claims] 1 C: 0.02-0.10%, Mn: 0.05-0.50%, P: 0.005-0.030%, S: 0.005-0.030% , N: 0.0010-0.0100%, SolAl: 0.005-0.100%, B: 0.00
15 to 0.0050%, Cu: 0.010 to 0.050%, the balance consisting of Fe and inevitable impurity elements, and N
%-0.5・14/11・B%>0.0005%, SolAl%×(N%-0.5・14/11・%
) > 2.0 x 10^-^5 (more than % by weight) aluminum killed steel is hot-rolled and then coiled at 550 to 720°C, pickled by a normal method, and after cold rolling. A method for producing aluminum killed cold-rolled steel sheets with excellent enamel properties, which is characterized by annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9969781A JPS6051537B2 (en) | 1981-06-29 | 1981-06-29 | Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9969781A JPS6051537B2 (en) | 1981-06-29 | 1981-06-29 | Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS583923A JPS583923A (en) | 1983-01-10 |
| JPS6051537B2 true JPS6051537B2 (en) | 1985-11-14 |
Family
ID=14254235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9969781A Expired JPS6051537B2 (en) | 1981-06-29 | 1981-06-29 | Manufacturing method of aluminum killed cold rolled steel sheet with excellent hollowability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051537B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019117101A1 (en) | 2017-12-12 | 2019-06-20 | セントラル硝子株式会社 | Electrolyte solution for nonaqueous electrolyte batteries and nonaqueous electrolyte battery using same |
| KR20200090223A (en) | 2017-12-12 | 2020-07-28 | 샌트랄 글래스 컴퍼니 리미티드 | Electrolyte for nonaqueous electrolyte batteries and nonaqueous electrolyte batteries using the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS616213A (en) * | 1984-06-21 | 1986-01-11 | Nippon Kokan Kk <Nkk> | Manufacture of cold rolled steel sheet for enamel having superior fish scale resistance and deep drawability |
| JP4708801B2 (en) * | 2005-01-27 | 2011-06-22 | 日新製鋼株式会社 | Manufacturing method of enameled steel sheet for enamel |
-
1981
- 1981-06-29 JP JP9969781A patent/JPS6051537B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019117101A1 (en) | 2017-12-12 | 2019-06-20 | セントラル硝子株式会社 | Electrolyte solution for nonaqueous electrolyte batteries and nonaqueous electrolyte battery using same |
| KR20200090223A (en) | 2017-12-12 | 2020-07-28 | 샌트랄 글래스 컴퍼니 리미티드 | Electrolyte for nonaqueous electrolyte batteries and nonaqueous electrolyte batteries using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS583923A (en) | 1983-01-10 |
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