JPS61104051A - Cold rolled steel sheet for vitreous enameling and its manufacture - Google Patents

Cold rolled steel sheet for vitreous enameling and its manufacture

Info

Publication number
JPS61104051A
JPS61104051A JP59223780A JP22378084A JPS61104051A JP S61104051 A JPS61104051 A JP S61104051A JP 59223780 A JP59223780 A JP 59223780A JP 22378084 A JP22378084 A JP 22378084A JP S61104051 A JPS61104051 A JP S61104051A
Authority
JP
Japan
Prior art keywords
less
enameling
cold
steel
rolled steel
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.)
Granted
Application number
JP59223780A
Other languages
Japanese (ja)
Other versions
JPS63500B2 (en
Inventor
Akira Yasuda
安田 顕
Jiyunko Ikedaira
池平 淳子
Kenji Ito
健治 伊藤
Norisuke Takasaki
高崎 順介
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP59223780A priority Critical patent/JPS61104051A/en
Priority to CA000492962A priority patent/CA1257789A/en
Priority to US06/792,697 priority patent/US4670065A/en
Priority to ES548025A priority patent/ES8900172A1/en
Priority to EP85113348A priority patent/EP0179432B1/en
Priority to DE8585113348T priority patent/DE3563223D1/en
Priority to ZA858071A priority patent/ZA858071B/en
Priority to KR1019850007885A priority patent/KR890003664B1/en
Priority to AU48959/85A priority patent/AU556276B2/en
Priority to NO854237A priority patent/NO165408C/en
Priority to CN85108620A priority patent/CN1003179B/en
Publication of JPS61104051A publication Critical patent/JPS61104051A/en
Publication of JPS63500B2 publication Critical patent/JPS63500B2/ja
Granted legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To obtain the cold rolled steel sheet for vitreous enameling having superior press formability, adhesion of porcelain enamel, an fishscale resistance, by incorporating specific percentage of C, P, S, N, Ti, Cu, As, Sb, and Bi to Fe. CONSTITUTION:The steel consisting of, be weight, <=0.005% C, <=0.02% P, <=0.03% S, 0.005-0.12% N, >(48/12C+48/14N+48/32S)-0.15% Ti, <=0.08% Cu, 0.003-0.03%, in total, of at least 1 kind element selected from the group consisting of As, Sb, and Si, and the balance Fe with inevitable impurities is manufactured. This molten steel is subjected to continuous casting, hot rolling, cold rolling, and then continuous annealing in a temp. range from a recrystallization temp. to an Ac3 point to obtain the cold rolled carbon steel sheet for vitreous enameling.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明はプレス成形性とともにほうろう特性に優れた、
ほうろう用冷延鋼板およびその製造方法に関するもので
ある。
[Detailed Description of the Invention] <Industrial Field of Application> The present invention provides a material with excellent press formability and enameling properties.
The present invention relates to a cold-rolled steel plate for enameling and a method for manufacturing the same.

〈従来技術とその問題点〉 ほうろう用鋼板は、ほうろう密着性、焼成歪特性、およ
び耐つまとび性などのほうろう特性が優れていること、
およびほうろう製品の多くが厳しいプレス成形を受けて
、製品とされるため、プレス成形性が優れていることが
必要である。
<Prior art and its problems> Steel plates for enameling have excellent enameling properties such as enameling adhesion, firing strain properties, and resistance to chipping.
Since many enamel products are made into products after undergoing severe press molding, it is necessary that they have excellent press moldability.

τi添添加鋼時にCを0.02%以下とした極低炭素鋼
にTiを添加した場合、優れたプレス成形性が得られる
ことは特公昭42−12348号および特公°昭44−
18088号などに開示されている。Ti添加鋼の優れ
たプレス成形性を利用し、さらに、優れたほうろう特性
を得るための技術が特公昭45−40855号、特開昭
53−131818号、あるいは特開昭56−9357
号などに開示されている。
It has been reported in Japanese Patent Publication No. 12348/1973 and Japanese Patent Publication No. 12348/1973 that when Ti is added to ultra-low carbon steel with C content of 0.02% or less when adding τi, excellent press formability can be obtained.
No. 18088, etc. Techniques for utilizing the excellent press formability of Ti-added steel and further obtaining excellent enameling properties are disclosed in Japanese Patent Publication No. 45-40855, Japanese Patent Application Laid-Open No. 53-131818, or Japanese Patent Application Laid-open No. 56-9357.
It is disclosed in the issue.

しかし、これらの技術は良好なプレス成形性とともに、
ほうろう特性の中の酎つまとび性を改善するための技術
である。すなわちTiが鋼中で炭化物、硫化物、窒化物
を形成することを利用し。
However, these technologies have good press formability and
This is a technology to improve the enameling properties of enamel. That is, it takes advantage of the fact that Ti forms carbides, sulfides, and nitrides in steel.

鋼板の水素吸蔵能を高め、つまとびの発生を抑制しよう
とするものである。
The aim is to increase the hydrogen storage capacity of steel sheets and suppress the occurrence of splatter.

かかる効果を十分に発揮せしめるためには十分な量のT
il添加する必要があるが、Ti量を増加させるとほう
ろう密着性が劣化するという問題があった。このため、
Ti添加鋼はプレス成形性と酎つまとび性に優れていな
がら、これまでごく一部の用途にしかほうろう用鋼板と
して用いられていなかった。
A sufficient amount of T is required to fully exhibit this effect.
Although it is necessary to add il, there is a problem that increasing the amount of Ti deteriorates the adhesion to the enamel. For this reason,
Although Ti-added steel has excellent press formability and castability, until now it has only been used in a limited number of applications as steel sheets for enameling.

〈発明の目的〉 本発明は上述した実状に鑑みてなされたもので、プレス
成形性とともに、ほうろう特性に優れたほうろう用鋼板
およびその製造方法を提供することを目的とする。  
                 1〈発明の構成〉 Ti添加鋼のほうろう密着性が劣る原因はほうろう前処
理の硫酸々洗で、鋼板表面に酸洗生成物(FeSO4(
l nH20)が多量に付着するためであり、鋼中にA
s、 Sb、あるいはBiを添加することにより酸洗生
成物の付着が防看ヒ出来ることを見出した。 本発明の
第1の態様によればC: 0.005%以下P : 0
.02%以下、S : 0.03%以下、N;0.00
5%以上、0.012%以下、Ti : 0.15%以
下か’)Ti>(イ、C+  イ、N+   g2S)
  、  Cu:0.08%以下、As、 Sb、およ
びBiよりなる群から選択された少なくとも1種の元素
の合計が。
<Object of the Invention> The present invention was made in view of the above-mentioned actual situation, and an object of the present invention is to provide a steel plate for enameling that has excellent press formability and enameling properties, and a method for manufacturing the same.
1 <Structure of the invention> The reason for the poor enamel adhesion of Ti-added steel is the sulfuric acid washing during enameling pretreatment, which produces pickling products (FeSO4) on the surface of the steel plate.
This is because a large amount of A
It has been found that adhesion of pickling products can be prevented by adding S, Sb, or Bi. According to the first aspect of the present invention, C: 0.005% or less P: 0
.. 02% or less, S: 0.03% or less, N: 0.00
5% or more, 0.012% or less, Ti: 0.15% or less') Ti > (I, C+ I, N+ g2S)
, Cu: 0.08% or less, the total of at least one element selected from the group consisting of As, Sb, and Bi.

0.003%以上、0.03%以下、残部鉄および不可
避的不純物よりなるほうろう用冷延鋼板が提供される。
A cold-rolled steel sheet for enameling is provided, which contains 0.003% or more and 0.03% or less, the balance being iron and unavoidable impurities.

本発明の第2態様によれば、プレス成形性、ほうろう密
着性、耐つまとび性に優れたほうろう用冷延鋼板を製造
するに際し、C: 0.005%以下、−P : 0.
02%以下、S : 0.03%以下、 N : 0.
005%以ヒ、 0.012%以下、 Ti 0.15
%以下かつTi>(イ。C+  イ、N+   l、2
S+0・03)  %・Cu : 0.08%以下、A
s、 SbおよびBiよりなる群から選択された少なく
とも1種の元素の合計が、0.003%以上、0.03
%以下、残部鉄および不可避的不純物よりなる溶鋼を連
続鋳造し、熱間圧延。
According to the second aspect of the present invention, when producing a cold-rolled steel sheet for enameling that is excellent in press formability, enameling adhesion, and chipping resistance, C: 0.005% or less, -P: 0.
0.02% or less, S: 0.03% or less, N: 0.
005% or more, 0.012% or less, Ti 0.15
% or less and Ti>(a. C+ a, N+ l, 2
S+0・03) %・Cu: 0.08% or less, A
The total content of at least one element selected from the group consisting of s, Sb and Bi is 0.003% or more, 0.03%
% or less, molten steel consisting of the balance iron and unavoidable impurities is continuously cast and hot rolled.

冷間圧延後、再結晶温度以上、 Ac3点800℃以下
の温度域で連続焼鈍することを特徴とする、ほうろう用
冷延鋼板の製造方法が提供される。
Provided is a method for manufacturing a cold-rolled steel sheet for enameling, which is characterized in that after cold rolling, continuous annealing is carried out in a temperature range of not less than the recrystallization temperature and not more than 800° C. at three Ac points.

本発明の第3の態様によれば、プレス成形性。According to a third aspect of the invention, press formability.

ほうろう密着性、耐つまとび性に優れたほうろう用冷延
鋼板を製造するに際し、C: 0.005%以下、P 
: 0.02%以下、S : 0.03%以下、N:0
.005%以り、 0.012%以下、Ti O,15
%以下かつTi>(イ、C+  イ、N+   l、2
S+0・03) %・Cu : 0.08%以下、As
、 SbおよびBiよりなる群から選択された少なくと
も1種の元素の合計が、0.003%以上、0.03%
以下、残部鉄および不可避的不純物よりなる溶鋼を連続
鋳造し、熱間圧延、冷間圧延後、再結晶温度以上、80
0℃以下の温度域で箱焼鈍することを特徴とするほうろ
う用冷延鋼板の製造方法が提供される。
When producing cold-rolled steel sheets for enameling with excellent enameling adhesion and chipping resistance, C: 0.005% or less, P
: 0.02% or less, S: 0.03% or less, N: 0
.. 005% or more, 0.012% or less, TiO,15
% or less and Ti>(a, C+ a, N+ l, 2
S+0・03) %・Cu: 0.08% or less, As
, the total content of at least one element selected from the group consisting of Sb and Bi is 0.003% or more, 0.03%
Below, molten steel consisting of residual iron and unavoidable impurities is continuously cast, hot-rolled, cold-rolled, and heated to 80°C above the recrystallization temperature.
Provided is a method for manufacturing a cold-rolled steel sheet for enameling, which is characterized by box annealing in a temperature range of 0° C. or lower.

本発明のほうろう用冷延鋼板の成分の限定理由を以下に
述べる。
The reasons for limiting the components of the cold-rolled steel sheet for enameling of the present invention will be described below.

C:Cは鋼中に固溶状態で存在すると鋼板の延性、およ
びT値が劣化する。Tiを十分な量。
C: When C exists in a solid solution state in steel, the ductility and T value of the steel sheet deteriorate. Sufficient amount of Ti.

添加した鋼ではCはTiCとして存在し、延性、Y値の
劣化の程度は小さくなるが0.005%以上になると、
特に延性が劣化する。またTiGとしてCを固定するた
めに必要なTi量が多くなり、ほうろう密着性を低下さ
せるだけでなく、コストアップの原因となる。したがっ
てCI(の上限を0.005%とする。
In added steel, C exists as TiC, and the degree of deterioration of ductility and Y value is small, but if it exceeds 0.005%,
In particular, ductility deteriorates. Furthermore, the amount of Ti required to fix C as TiG increases, which not only reduces the adhesion of the enamel but also causes an increase in cost. Therefore, the upper limit of CI (is set to 0.005%).

P:Pは鋼中に不可避的不純物として存在する。P量が
増加すると鋼板の延性が劣化するだけでなく、著しい二
次加工脆性を示す、二次加工脆性とは鋼板をプレス整形
した後、プレス成形品が、僅かな応力で脆性破壊する現
象で、これを避けるためには後に述べる如く、焼鈍を連
続焼鈍とする、又は、十分なTiを添加するなどの他に
鋼中のP量を0.02%以下に低くすることが、有効で
ある。したがってPの上限を、 0.02%とする。
P: P exists as an unavoidable impurity in steel. When the amount of P increases, the ductility of the steel plate not only deteriorates, but also exhibits significant secondary work brittleness. Secondary work brittleness is a phenomenon in which the press-formed product breaks brittle due to a slight stress after the steel plate is press-formed. In order to avoid this, as will be described later, it is effective to perform continuous annealing, add sufficient Ti, and lower the amount of P in the steel to 0.02% or less. . Therefore, the upper limit of P is set to 0.02%.

S:SもPと同様鋼中に不可避的不純物として存在し、
一般的には鋼の熱間脆性を起し、熱延時に表面欠陥を生
ずる原因となるばかりでなく。
S: Like P, S also exists as an unavoidable impurity in steel.
In general, this not only causes hot brittleness of the steel and causes surface defects during hot rolling.

冷延製品とした後にも鋼の延性を低下させる有害な元素
である。しかし、十分な量のTiを添加した場合、Sは
チタン硫化物となるため上述のような害は小さくなる。
It is a harmful element that reduces the ductility of steel even after it is made into cold-rolled products. However, when a sufficient amount of Ti is added, S turns into titanium sulfide, so the above-mentioned harm is reduced.

しかし、slが多くなると必要なTi添加量が多くなる
ためコスト上昇の要因となる。そこでslのと限を0.
03%とする。
However, as sl increases, the required amount of Ti to be added increases, which causes an increase in cost. Therefore, set the limit of sl to 0.
03%.

NUNは本発明鋼板においてはほうろう特性の中で耐つ
まとび性を良好たらしめるのに必要な元素である。Ti
を添加した鋼の中で、NはTiNとして存在し、その量
が増加するとともに鋼板の耐つまとび性は向上する。
In the steel sheet of the present invention, NUN is an element necessary for providing good chipping resistance among the enameling properties. Ti
In the steel to which TiN is added, N exists as TiN, and as its amount increases, the chipping resistance of the steel sheet improves.

すなわち、 TiNが存在することにより冷間圧延時に
鋼中に空隙が形成され、つまとび発生の原因となる水素
を鋼中に吸蔵し、つまとびの発生を抑制する。完全につ
まとびを抑制するためには0.005%以上のNが必要
である。しかし、N%が多くなりこれをTiNとして固
定するのに十分な量のTiを添加すると鋼板の表面にヘ
ゲ状欠陥を発生することがある。 NI+が0.012
%以下ではこのようなヘゲ状欠陥が発生することはきわ
めて穫れである。Nの範囲は0.005%以上、0.0
12%以下とする必要がある。
That is, due to the presence of TiN, voids are formed in the steel during cold rolling, and hydrogen, which causes skipping, is occluded in the steel, thereby suppressing the occurrence of skipping. In order to completely suppress clumping, 0.005% or more of N is required. However, if a sufficient amount of Ti is added to increase the N% and fix it as TiN, bald defects may occur on the surface of the steel sheet. NI+ is 0.012
% or less, it is extremely unfortunate that such bald defects occur. The range of N is 0.005% or more, 0.0
It needs to be 12% or less.

Ti:Tiを鋼中に添加することによりC,N、Sをそ
れぞれTiC、TiN 、 TiSとして固定し、これ
ら元素が鋼板の材質に及ぼす悪影響を低減するだけでな
く、つまとびの発生を防止する効果を有する。かかる効
果が十分に発揮されるためにはC1N、Sを固定するに
十分なTi4ik、すなわち((2C” / t 4 
N +/3 p )%以上必要である。
Ti: By adding Ti to steel, C, N, and S are fixed as TiC, TiN, and TiS, respectively, which not only reduces the negative effects of these elements on the material of the steel sheet, but also prevents the occurrence of skipping. have an effect. In order for this effect to be fully exhibited, Ti4ik is sufficient to fix C1N, S, that is, ((2C"/t4
N+/3p)% or more is required.

さらにTiは鋼中でTiFePなるリン化物を形成する
。冷延鋼板を連続焼鈍する場合には冷却速度が大きいた
め二次加工脆性は起きないが1箱焼鈍する場合冷却速度
が小さいため、冷却時に粒界にPが偏析し、二次加工脆
性を惹き起す、したがって箱焼鈍する場合には炭化物、
窒化物、および硫化物となるTiの他にリン化物を形成
するために十分なTiを添加し、Pをリン化物として固
定し、粒界偏析を防ぎ、二次加工脆性を抑制する必要が
ある。このために必要なTi量は (イ2C+  イ、N+  6゜s+o・03)%以上
で ある。しかし、Ti量が過剰になるとコスト上昇を招く
だけでなく、連鋳ノズルがつまり易くなったり、ヘゲ状
欠陥の原因となり、更にはほうろう密着性や溶接性の劣
化が起るにのような問題を避けるためにはTi量を0.
15%以下とする必要がある。
Furthermore, Ti forms a phosphide called TiFeP in steel. When cold-rolled steel sheets are continuously annealed, the cooling rate is high, so secondary work embrittlement does not occur.However, when single-box annealing is performed, the cooling rate is low, so P segregates at grain boundaries during cooling, which causes secondary work embrittlement. and therefore, when box annealing, carbides,
In addition to Ti that becomes nitrides and sulfides, it is necessary to add sufficient Ti to form phosphides, fix P as phosphides, prevent grain boundary segregation, and suppress secondary work brittleness. . The amount of Ti required for this purpose is (i2C+i,N+6°s+o·03)% or more. However, an excessive amount of Ti not only increases costs, but also causes clogging of the continuous casting nozzle, causes bald defects, and even deteriorates enamel adhesion and weldability. To avoid this problem, the amount of Ti should be set to 0.
It is necessary to keep it below 15%.

Cu:Cuは鋼中に不可避的不純物として0.01%以
ト含まれ、ほうろう前処理として行われる硫酸々洗にお
いて、鋼板の酸洗性に著しい影響を及ぼす、すなわち鋼
中のCu量が増加するとともに酸性速度は著しく低下す
る。しかし+Cu省が増加すると酸洗生成物の付着が容
易に起り、ほうろう密着性低下の原因となる。特にCu
は長時間酸洗した場合酸洗速度が次第に大きくなる傾向
を助長し、酸洗生成物の付着を増大せしめる。cuにょ
る酸洗生成物付着を助長する影響はAs、 Sb或いは
旧などを添加することにより、低減されるが、これら元
素の添加によるコストアップを最小限に抑えるためには
Cuを0.08%以下とすることが必要である。
Cu: Cu is contained in steel as an unavoidable impurity in an amount of 0.01% or more, and in the sulfuric acid wash performed as a pre-enamel treatment, it has a significant effect on the pickling properties of the steel plate, that is, the amount of Cu in the steel increases. At the same time, the acid rate decreases significantly. However, as the +Cu content increases, pickling products easily adhere to the enamel, causing a decrease in enamel adhesion. Especially Cu
This promotes the tendency for the pickling rate to gradually increase when pickling is carried out for a long period of time, leading to increased adhesion of pickling products. The influence of Cu on accelerating the adhesion of pickling products can be reduced by adding As, Sb, or Cu, but in order to minimize the cost increase due to the addition of these elements, Cu should be added at 0.08%. % or less.

As、 Sb、 Bi :これら周期律表上5B属に分
類される元素を添加することにより酸洗生成物の表面へ
の付着を抑制することが出来る。これら元素が酸洗生成
物の付着を防を卜するメカニズムは明らかではないが、
鋼板表面における酸洗生成物(FeSOa ・nH20
)の吸着サイトを不活性化するものと考えられる。かか
る効果を期待するためにはこれら元素の一種又は二種以
上の合計が0.003%以上必要であるが、0.03%
以上添加すると酸洗球度が小さくなり、熱延時にヘゲ欠
陥が多発する。コスト−Fツブを避け、かつ、十分な効
果を期待するためには0.005%以上、0.03%以
下の範囲で添加することが好ましい。
As, Sb, Bi: By adding these elements classified into Group 5B of the periodic table, it is possible to suppress the pickling product from adhering to the surface. The mechanism by which these elements prevent pickling products from adhering is not clear, but
Pickling products (FeSOa ・nH20
) is thought to inactivate the adsorption sites. In order to expect such an effect, the total content of one or more of these elements must be 0.003% or more, but 0.03%
If more than 10% is added, the pickling sphericity becomes small, and heave defects occur frequently during hot rolling. In order to avoid cost-F lumps and to expect sufficient effects, it is preferable to add in a range of 0.005% or more and 0.03% or less.

また、冷延鋼板を連続焼鈍する場合には二次加工脳性が
起ることはないため、再結晶温度以上、Ac3点以下の
温度で焼鈍することが可能であるが、箱焼鈍する場合、
 TiFePを有効に形成せしめるために再結晶温度以
上800℃以下の温度域で焼鈍する必要がある。すなわ
ち、焼鈍温度が800℃以−ヒとなると、TiとPの溶
解度が大きくなり、TiFePは析出しにくくなる。な
お、コストおよび密着□防1Fの観点から焼鈍温度を7
50℃以下とすることが好ましい。
In addition, when cold-rolled steel sheets are continuously annealed, secondary workability does not occur, so it is possible to anneal at a temperature above the recrystallization temperature and below the Ac3 point, but when box annealing,
In order to effectively form TiFeP, it is necessary to perform annealing in a temperature range above the recrystallization temperature and below 800°C. That is, when the annealing temperature is 800° C. or higher, the solubility of Ti and P increases, and TiFeP becomes difficult to precipitate. In addition, from the viewpoint of cost and adhesion prevention, the annealing temperature was set to 7.
The temperature is preferably 50°C or less.

〈実施例〉 実施例に基き、本発明を説明する。<Example> The present invention will be explained based on examples.

実施例1 表1に示す組成の鋼を溶製し、連続鋳造によりスラブと
した後、熱間圧延、冷間圧延を施し。
Example 1 Steel having the composition shown in Table 1 was melted and made into a slab by continuous casting, followed by hot rolling and cold rolling.

800℃、20secの連続焼鈍し、冷延鋼板を得た。Continuous annealing was performed at 800°C for 20 seconds to obtain a cold rolled steel plate.

さらに0.8%の調質圧延を施して機械的性質および種
々のほうろう特性について調べた。
Furthermore, 0.8% temper rolling was performed and mechanical properties and various enameling properties were investigated.

表2にこれら鋼板の材質を示す、C量が0.008%の
No、10を除き他の鋼板はいずれもElが48%以上
T値が1.8以上の良好なプレス成形性を示す。
Table 2 shows the materials of these steel plates. Except for No. and No. 10, which have a C content of 0.008%, all of the other steel plates exhibit good press formability with an El of 48% or more and a T value of 1.8 or more.

また表2にこれら鋼板のつまとじ試験結果を併せ示す、
つまとじ試験は20秒の酸洗後市販の釉    −薬(
日本フェロ−(株)製Lタイプ)を施釉し、露点30℃
の焼成炉で820℃で、ほうろう焼成した後、つまとび
発生の*無を調べた。各鋼板につき20枚の試片を焼成
し、そのうちっまとびが発ノドした試片の割合で示した
。N量が低いN。
Table 2 also shows the results of the binding test for these steel plates.
The binding test was carried out using a commercially available glaze after pickling for 20 seconds.
Nippon Ferro Co., Ltd. L type) is glazed and has a dew point of 30℃.
After enameling was fired at 820°C in a firing furnace, the occurrence of skipping was examined. For each steel plate, 20 specimens were fired, and the percentage of specimens in which skipping occurred was shown. N with low amount of N.

8および9を除き、つまとびの発生は皆無であり材質お
よび耐つまとび性に優れた鋼板が得られることがわかる
Except for Nos. 8 and 9, there was no occurrence of chipping, indicating that steel plates with excellent material quality and chipping resistance were obtained.

しかし、ほうろう密着性は鋼板により大きく異なる。第
1図に10%硫酸々洗(70℃)15分流した後の酸洗
生成物量とさらに2%硫酸ニッケル浴(65℃)浸漬1
0分の前処理を施した後。
However, enamel adhesion varies greatly depending on the steel plate. Figure 1 shows the amount of pickling product after washing with 10% sulfuric acid (70℃) for 15 minutes and the amount of pickling product after 15 minutes of immersion in a 2% nickel sulfate bath (65℃).
After 0 minutes of pretreatment.

市販のTi白釉を施釉、820℃でほうろう焼成した。It was glazed with a commercially available Ti white glaze and enameled at 820°C.

後のほうろう密着性を示す、ほうろう密着性の指標とし
てP、!、l (米国ほうろう協会)により定められた
密着試験で測定されるP、E、1.ほうろう密着指数を
用いた。
P as an indicator of enamel adhesion that shows the enamel adhesion afterward! , l (American Enamel Association) as measured by the adhesion test specified by P, E, 1. The enamel adhesion index was used.

Sb、 As、 Biを含有しない鋼板は酸洗生成物の
量が多く、ほうろう密着性もバラツキ、最も良好な密着
性が得られたNo、7でもP、E、1.指数で60%の
密着性しか得られなかった。
Steel plates that do not contain Sb, As, or Bi have a large amount of pickling products and have varying adhesion to enamel. An adhesion index of only 60% was obtained.

しかし、As、 SbあるいはBiを含有する鋼板は酸
洗生成物がほとんど鋼板に付着せず良好なほうろう密着
性が得られた。
However, in steel plates containing As, Sb, or Bi, the pickling product hardly adhered to the steel plates, and good enamel adhesion was obtained.

実施例2 表3に示す組成の網を溶製し連続鋳造によりスラブとし
た後熱間圧延、冷間圧延を施し、720℃、1Ohrの
箱焼鈍を施した0次いで0゜8%の調質圧延を行ない板
厚0.7mmの冷延鋼板を得た。これら鋼板の機械的性
質を表4に示す。
Example 2 A mesh having the composition shown in Table 3 was melted and made into a slab by continuous casting, followed by hot rolling, cold rolling, and box annealing at 720° C. for 1 Ohr, resulting in 0° and 0°8% tempering. A cold-rolled steel plate with a thickness of 0.7 mm was obtained by rolling. Table 4 shows the mechanical properties of these steel plates.

耐二次加工脆性は紋り比2.1で円筒カップに成形した
後、常温より一60℃までの種々の温度に保持し、5k
g重の錘りを1m高さより落重し、縦割れが発生する温
度を割れ発生臨界温度として評価した。すなわちこの臨
界温度が低い程、耐二次加工脆性は優れている。
Resistance to secondary processing brittleness is determined by molding into a cylindrical cup with a frit ratio of 2.1, holding it at various temperatures from room temperature to -60°C, and holding it at 5k.
A weight of g weight was dropped from a height of 1 m, and the temperature at which vertical cracking occurred was evaluated as the critical cracking temperature. In other words, the lower the critical temperature, the better the resistance to secondary work brittleness.

いずれの鋼板も〒>1.8 、 El)50%のすぐれ
たプレス成形性を示すがTi添加畢が少ない鋼No、1
5.17は0℃でも縦割れを発生し。
All steel plates show excellent press formability of 〒>1.8, El) 50%, but steel No. 1 with less Ti addition cracks.
5.17, vertical cracking occurred even at 0°C.

著しい二次加工脆性が現れた。Significant secondary processing brittleness appeared.

しかし、Tiを十分含有する他の鋼は一60℃でも縦割
れは発生せず、耐二次加工脆性が良好であることがわか
る。
However, other steels containing a sufficient amount of Ti do not exhibit vertical cracking even at -60°C, indicating that they have good resistance to secondary work brittleness.

第2図に実施例1と同様の方法でほうろう密着性を調べ
た結果を示す、 Sb、 AsあるいはBiを含有する
鋼は良好なほうろう密着性が得られるが、これら元素を
含有しない鋼No、16.17は酸洗による酸洗生成物
の付着量が多く、良好なほうろう密着性が得られない。
Fig. 2 shows the results of examining enamel adhesion using the same method as in Example 1. Steels containing Sb, As, or Bi can provide good enamel adhesion, but steel No. 2 does not contain these elements. Sample No. 16.17 had a large amount of pickling product attached due to pickling, and good enamel adhesion could not be obtained.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は各鋼板(連続焼鈍材)のほうろう密着性と酸洗
生成物の付着量を示すグラフである。 第2図は各鋼板(箱焼鈍材)のほうろう密着性と酸洗生
成物の付着量を示すグラフである。 代理人 弁理士  渡 辺 望 稔’44i−::ゝ=
1“− 同  弁理士  石 井 陽 −・・−・):L’I”
二 FIG、1 @  趨 (No、 )          cFIG
、  2 4If4   檀 (N O,”) 手続補正書印釦 昭和60年 5月13日 昭和59年特許願第223780号 2、発明の名称 ほうろう用冷延鋼板およびその製造方法3、補正をする
者 事件との関係   特許出願人 住  所  兵庫県神戸市中央区北本町通1丁目1番2
8号名 称  (125)川崎製鉄株式会社4、代理人
 〒101 電話5s4−4498住  所  東京都
千代田区岩本町3丁目2番2号明細書のr2、特許請求
の範囲1の欄、明細書の13、発明の詳細な説明jの欄
6、補正の内容 (1)特許請求の範囲を別紙の通り補正する。 (2)明細書第5頁下から3行目r + 0.03Jを
削除する。 (3)明細書第6頁上から3行目「800℃」を削除す
る。 (4)明細書第1O頁下から10行目「酸性」を「酸洗
」と訂正する。 2、特許請求の範囲 (1) C:  0.005%以下、F’:0.02%
以下、S : 0.03%以下、 N :  Q、00
5%以上、  0.012%以下、 Ti : 0.1
5%以下かつTi>(48/  C◆ 487N+  
/32 S )%、 Cu : 0.08%以下、 A
s、 Sbおよび81よりなる群から選択された少なく
とも1種の元素の合計が、 0.003%以上、 0.
03%以下、残部鉄および不可避的不純物よりなるほう
ろう用冷延鋼板。 (2)プレス成形性、ほうろう密着性、酎つまとび性に
優れたほうろう用冷延鋼板を製造するに際し、 C: 
 0.005%以下、P : O,02%以下。 s : o、o3%以下、 N :  0.005%以
上、  0.012%以下、 t+ : 0.15%以
下かつTi>(/  C+”/  N+ /32S)%
、Cu : 0.08%以下、 As、SbおよびBi
よりなる群から選択された少なくとも1種の元素の合計
が、0.003%以上、 0.03%以下、残部鉄およ
び不可避的不純物よりなる溶鋼を連続鋳造      
  1し、熱間圧延、冷間圧延後、再結晶温度以上。 Ac3点以下の温度域で連続焼鈍することを特徴とする
。ほうろう用冷延鋼板の製造方法。 (3)プレス成形性、ほうろう密着性、mっまとび性に
優れたほうろう用冷延鋼板を製造するにに際し、 c 
:  o、oos%以下、P:0.02%以下、S :
 0.03%以下、N :  0.005%以上、0.
012%以下、 Ti : 0.15%以下かつTi>
(/12C◆  /14N+  /32S + 0.0
3)%、 Cu : 0.08%以下、 As、Sbお
よびBiよりなる群から選択された少なくとも1種の元
素の合計が、  0.003%以上、 0.03%以下
、残部鉄および不可避的不純物よりなる溶鋼を連続鋳造
し、熱間圧延、冷間圧・延後、再結晶温度以上、800
℃以下の温度域で箱焼鈍することを特徴とするほうろう
用冷延鋼板の製造方法。
FIG. 1 is a graph showing the enamel adhesion and the amount of pickling product deposited on each steel plate (continuously annealed material). FIG. 2 is a graph showing the enamel adhesion and the amount of pickling product deposited on each steel plate (box annealed material). Agent Patent Attorney Minoru Watanabe '44i-::ゝ=
1"- Patent attorney Yo Ishii -...-): L'I"
2 FIG, 1 @ trend (No, ) cFIG
, 2 4If4 Dan (N O,”) Procedural amendment stamp button May 13, 1985 Patent Application No. 223780 of 1988 2, Title of invention Cold rolled steel plate for enameling and its manufacturing method 3, Person making the amendment Relationship to the incident Patent applicant address 1-1-2 Kitahonmachi-dori, Chuo-ku, Kobe, Hyogo Prefecture
No. 8 Name Title (125) Kawasaki Steel Co., Ltd. 4, Agent 101 Telephone 5s4-4498 Address 3-2-2 Iwamoto-cho, Chiyoda-ku, Tokyo R2 of the specification, claims 1 column, specification 13, Detailed Description of the Invention, Column 6, j, Contents of Amendment (1) The scope of the claims will be amended as shown in the attached sheet. (2) Delete 3rd line r + 0.03J from the bottom of page 5 of the specification. (3) Delete "800°C" in the third line from the top of page 6 of the specification. (4) In the 10th line from the bottom of page 10 of the specification, "acidic" is corrected to "pickling." 2. Claims (1) C: 0.005% or less, F': 0.02%
Below, S: 0.03% or less, N: Q, 00
5% or more, 0.012% or less, Ti: 0.1
5% or less and Ti>(48/C◆ 487N+
/32S)%, Cu: 0.08% or less, A
The total content of at least one element selected from the group consisting of s, Sb and 81 is 0.003% or more, 0.
A cold-rolled steel sheet for enameling consisting of 0.3% or less, the balance being iron and unavoidable impurities. (2) When producing a cold-rolled steel sheet for enameling that has excellent press formability, enameling adhesion, and castability, C:
0.005% or less, P: O, 02% or less. s: o, o3% or less, N: 0.005% or more, 0.012% or less, t+: 0.15% or less and Ti>(/C+”/N+/32S)%
, Cu: 0.08% or less, As, Sb and Bi
Continuous casting of molten steel in which the total content of at least one element selected from the group consisting of 0.003% or more and 0.03% or less, the balance being iron and unavoidable impurities.
1. Recrystallization temperature or higher after hot rolling or cold rolling. It is characterized by continuous annealing in a temperature range of Ac 3 or lower. A method for producing cold-rolled steel sheets for enameling. (3) When producing a cold-rolled steel plate for enameling that has excellent press formability, enameling adhesion, and excellent jumpability, c.
: o, oos% or less, P: 0.02% or less, S:
0.03% or less, N: 0.005% or more, 0.
0.012% or less, Ti: 0.15% or less and Ti>
(/12C◆ /14N+ /32S + 0.0
3)%, Cu: 0.08% or less, the total of at least one element selected from the group consisting of As, Sb and Bi is 0.003% or more and 0.03% or less, the balance is iron and unavoidable Molten steel containing impurities is continuously cast, hot-rolled, cold-rolled, and then heated to a temperature higher than the recrystallization temperature at 800°C.
A method for producing a cold-rolled steel sheet for enameling, characterized by box annealing in a temperature range below ℃.

Claims (3)

【特許請求の範囲】[Claims] (1)C:0.005%以下、P:0.02%以下、S
:0.03%以下、N:0.005%以上、0.012
%以下、Ti:0.15%以下かつTi>(48/12
C+48/14N+48/32S)、Cu:0.08%
以下、As、SbおよびBiよりなる群から選択された
少なくとも1種の元素の合計が、0.003%以上、0
.03%以下、残部鉄および不可避的不純物よりなるほ
うろう用冷延鋼板。
(1) C: 0.005% or less, P: 0.02% or less, S
: 0.03% or less, N: 0.005% or more, 0.012
% or less, Ti: 0.15% or less and Ti>(48/12
C+48/14N+48/32S), Cu: 0.08%
Hereinafter, the total amount of at least one element selected from the group consisting of As, Sb and Bi is 0.003% or more, 0.
.. A cold-rolled steel sheet for enameling consisting of 0.3% or less, the balance being iron and unavoidable impurities.
(2)プレス成形性、ほうろう密着性、耐つまとび性に
優れたほうろう用冷延鋼板を製造するに際し、C:0.
005%以下、P:0.02%以下、S:0.03%以
下、N:0.005%以上、0.012%以下、Ti:
0.15%以下かつTi>(48/12C+48/14
N+48/32S+0.03)%、Cu:0.08%以
下、As、SbおよびBiよりなる群から選択された少
なくとも1種の元素の合計が、0.003%以上、0.
03%以下、残部鉄および不可避的不純物よりなる溶鋼
を連続鋳造し、熱間圧延、冷間圧延後、再結晶温度以上
、Ac_3点以下の温度域で連続焼鈍することを特徴と
する、ほうろう用冷延鋼板の製造方法。
(2) When producing cold-rolled steel sheets for enameling that have excellent press formability, enameling adhesion, and chipping resistance, C: 0.
005% or less, P: 0.02% or less, S: 0.03% or less, N: 0.005% or more, 0.012% or less, Ti:
0.15% or less and Ti>(48/12C+48/14
N+48/32S+0.03)%, Cu: 0.08% or less, the total of at least one element selected from the group consisting of As, Sb and Bi is 0.003% or more, 0.
For enameling, which is characterized by continuous casting of molten steel consisting of 0.3% or less, balance iron and unavoidable impurities, followed by hot rolling and cold rolling, followed by continuous annealing in a temperature range above the recrystallization temperature and below Ac_3 point. A method for producing cold-rolled steel sheets.
(3)プレス成形性、ほうろう密着性、耐つまとび性に
優れたほうろう用冷延鋼板を製造するに際し、C:0.
005%以下、P:0.02%以下、S:0.03%以
下、N:0.005%以上、0.012%以下、Ti:
0.15%以下かつTi>(48/12C+48/14
N+48/32S+0.03)%、Cu:0.08%以
下、As、SbおよびBiよりなる群から選択された少
なくとも1種の元素の合計が、0.003%以上、0.
03%以下、残部鉄および不可避的不純物よりなる溶鋼
を連続鋳造し、熱間圧延、冷間圧延後、再結晶温度以上
、800℃以下の温度域で箱焼鈍することを特徴とする
ほうろう用冷延鋼板の製造方法。
(3) When producing a cold rolled steel plate for enameling that has excellent press formability, enameling adhesion, and chipping resistance, C: 0.
005% or less, P: 0.02% or less, S: 0.03% or less, N: 0.005% or more, 0.012% or less, Ti:
0.15% or less and Ti>(48/12C+48/14
N+48/32S+0.03)%, Cu: 0.08% or less, the total of at least one element selected from the group consisting of As, Sb and Bi is 0.003% or more, 0.
03% or less, the balance iron and unavoidable impurities are continuously cast, hot rolled, cold rolled, and then box annealed in a temperature range above the recrystallization temperature and below 800°C. Method of manufacturing rolled steel plate.
JP59223780A 1984-10-24 1984-10-24 Cold rolled steel sheet for vitreous enameling and its manufacture Granted JPS61104051A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP59223780A JPS61104051A (en) 1984-10-24 1984-10-24 Cold rolled steel sheet for vitreous enameling and its manufacture
CA000492962A CA1257789A (en) 1984-10-24 1985-10-15 Cold rolled steel suitable for enamel coating and method for making
US06/792,697 US4670065A (en) 1984-10-24 1985-10-15 Cold rolled steel suitable for enamel coating and method for making
ES548025A ES8900172A1 (en) 1984-10-24 1985-10-18 Procedure for the manufacture of rolled laminated steel sheets suitable for coating with enamel (Machine-translation by Google Translate, not legally binding)
EP85113348A EP0179432B1 (en) 1984-10-24 1985-10-21 Cold rolled steel suitable for enamel coating and method for making
DE8585113348T DE3563223D1 (en) 1984-10-24 1985-10-21 Cold rolled steel suitable for enamel coating and method for making
ZA858071A ZA858071B (en) 1984-10-24 1985-10-21 Cold rolled steel suitable for enamel coating and method for making
KR1019850007885A KR890003664B1 (en) 1984-10-24 1985-10-23 Cold rolled steel stuable for enamel coating and method for making
AU48959/85A AU556276B2 (en) 1984-10-24 1985-10-23 Cold rolled steel suitable for enamel coating
NO854237A NO165408C (en) 1984-10-24 1985-10-23 COLD ROLLED STEEL PLATE AND PROCEDURE FOR PREPARING DINING.
CN85108620A CN1003179B (en) 1984-10-24 1985-10-24 Cold rolled steel suitable for enamel coating and method for making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59223780A JPS61104051A (en) 1984-10-24 1984-10-24 Cold rolled steel sheet for vitreous enameling and its manufacture

Publications (2)

Publication Number Publication Date
JPS61104051A true JPS61104051A (en) 1986-05-22
JPS63500B2 JPS63500B2 (en) 1988-01-07

Family

ID=16803590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59223780A Granted JPS61104051A (en) 1984-10-24 1984-10-24 Cold rolled steel sheet for vitreous enameling and its manufacture

Country Status (1)

Country Link
JP (1) JPS61104051A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0293047A (en) * 1988-09-28 1990-04-03 Sumitomo Metal Ind Ltd Steel sheet for enamelling
KR100401981B1 (en) * 1998-09-15 2003-12-18 주식회사 포스코 A method for manufacturing two-sides enameled and hot-rolled steel sheets having superior fish scale resistance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0293047A (en) * 1988-09-28 1990-04-03 Sumitomo Metal Ind Ltd Steel sheet for enamelling
KR100401981B1 (en) * 1998-09-15 2003-12-18 주식회사 포스코 A method for manufacturing two-sides enameled and hot-rolled steel sheets having superior fish scale resistance

Also Published As

Publication number Publication date
JPS63500B2 (en) 1988-01-07

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