JPH01215999A - Production of aluminized steel sheet for vessel having satisfactory workability and corrosion resistance - Google Patents
Production of aluminized steel sheet for vessel having satisfactory workability and corrosion resistanceInfo
- Publication number
- JPH01215999A JPH01215999A JP63042588A JP4258888A JPH01215999A JP H01215999 A JPH01215999 A JP H01215999A JP 63042588 A JP63042588 A JP 63042588A JP 4258888 A JP4258888 A JP 4258888A JP H01215999 A JPH01215999 A JP H01215999A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- plating
- corrosion resistance
- aluminum
- workability
- 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
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 8
- 230000007797 corrosion Effects 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 229910000680 Aluminized steel Inorganic materials 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000007747 plating Methods 0.000 claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 4
- 238000005097 cold rolling Methods 0.000 claims abstract description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 238000009713 electroplating Methods 0.000 abstract description 3
- 238000005269 aluminizing Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012611 container material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Laminated Bodies (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は加工性、耐食性、外観の優れた容器用アルミニ
ウム被覆鋼板の製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for producing an aluminum-coated steel sheet for containers that has excellent workability, corrosion resistance, and appearance.
（従来の技術）
アルミニウムめっき鋼板は耐熱性及び耐食性が優れてお
り、従来から溶融めっき法によって製造されている。(Prior Art) Aluminum-plated steel sheets have excellent heat resistance and corrosion resistance, and have conventionally been manufactured by a hot-dip plating method.
従来の溶融アルミニウムめっき鋼板は溶融アルミニウム
と素地である鉄とが反応して厚い合金層が発達しており
加工性が非常に悪い。合金層成長の抑制方法としてアル
ミニウムにシリコンを１０％程度添加して加工性を向上
させる方法が、また、プレめっきを行い鋼板とアルミニ
ウムめっき層との間に形成される合金層を低減させる方
法として例えば特開昭５７−７６１７６号公報、特開昭
５７−１４０８６４号公報、特開昭５６−３３４６３号
公報、特開昭５７−１１４６５０号公報、特開昭５７−
７０２６８号公報５等に記載の方法が提案されている。Conventional hot-dip aluminized steel sheets develop a thick alloy layer due to the reaction between the molten aluminum and the base iron, resulting in very poor workability. One method of suppressing alloy layer growth is to add about 10% silicon to aluminum to improve workability, and another method is to perform pre-plating to reduce the alloy layer formed between the steel sheet and the aluminum plating layer. For example, JP-A-57-76176, JP-A-57-140864, JP-A-56-33463, JP-A-57-114650, JP-A-57-
A method described in 70268 Publication 5 and the like has been proposed.
（発明が解決しようとする課題）
しかし、前記の方法ではいずれも合金層の低減が不十分
であり、加工性の良好な鋼板を得ることは困難であるこ
とからアルミニウムめっき鋼板を加工性が必要とされる
容器用材料として適用する提案は知られていない。(Problem to be solved by the invention) However, in all of the above methods, the reduction of the alloy layer is insufficient and it is difficult to obtain a steel plate with good workability. There are no known proposals for its application as a container material.
本発明の目的は従来のアルミニウムめっき鋼板の問題点
を解決してアルミニウムの特性を生かして加工性、耐食
性、外観がいずれも優れた容器用アルミニウムめっき鋼
板の製造方法を提供することにある。An object of the present invention is to solve the problems of conventional aluminum-plated steel sheets and to provide a method for manufacturing aluminum-plated steel sheets for containers that are excellent in workability, corrosion resistance, and appearance by taking advantage of the characteristics of aluminum.
（課題を解決するための手段）
本発明は前記の目的を達成するために溶融めっき前の鋼
板表面に下層としてＮｉ、 Ｃｒ、 Ｎｉ −Ｃｒ合金
のいずれかをプレめっきし、さらにその上層にＦｅをプ
レめっきし、その後溶融アルミニウムめっきを施し、次
いで鋼板を５０％以上の圧下率で冷間圧延し、その後２
５０〜６５０℃で焼鈍する方法に特徴がある。(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention pre-plates the surface of a steel sheet before hot-dipping with Ni, Cr, or a Ni-Cr alloy as a lower layer, and further coats Fe on the upper layer. is pre-plated, then subjected to hot-dip aluminum plating, then the steel plate is cold-rolled at a reduction rate of 50% or more, and then 2
It is characterized by the method of annealing at 50 to 650°C.
以下、本発明について詳細に説明する。The present invention will be explained in detail below.
溶融アルミニウムめっきは通常衣の様な工程で行われる
。冷間圧延を終えた鋼板は先ず連続溶融金属めっきライ
ン内で加熱処理を受ける。通常は無酸化炉で加熱され、
次に還元炉で表面の酸化膜を還元しめっきに適した表面
とし大気に触れることなく熔融アルミ中に浸漬されめっ
きが施される。Hot-dip aluminum plating is usually performed in a coating-like process. After cold rolling, the steel plate is first subjected to heat treatment in a continuous hot-dip metal plating line. Usually heated in a non-oxidizing furnace,
Next, the oxide film on the surface is reduced in a reduction furnace to make the surface suitable for plating, and the plate is immersed in molten aluminum without being exposed to the atmosphere.
溶融アルミニウムめっきは反応性に冨み合金の反応が激
しく、必ず厚い合金層が生成するので、このままでは加
工性が非常に悪く厳しい加工性を要求されるものへは使
用できない。Hot-dip aluminum plating is highly reactive and the reaction of rich alloys is intense, and a thick alloy layer is always produced. Therefore, as it is, the workability is very poor and it cannot be used for products that require severe workability.
そこで本発明者等は加工性改善のために溶融アルミニウ
ムめっきに先行して電気めっきによってめっき原板にプ
レめっきを施す方法を種々研究した結果から、プレめっ
きにＣｒ、 Ｎｉ、 Ｃｒ−Ｎｉ合金等を使用し、更に
その上層にＦｅをめっきしたものは合金層の生成が著し
く抑制され加工性が非常に良くなることが明らかになっ
た。しかし容器用素材としては厳しい加工性が要求され
るために、その様なプレめっきのみでは耐えられないこ
とが分かった。その改善策としてこの様にして製造され
たアルミニウムめっき鋼板を更に冷間圧延し合金層を微
細に砕き更に薄＜シ、その後合金層を生成させない様な
温度と時間範囲で熱処理を行うことによって冷間圧延に
よって硬質化している組織が軟質化し加工性が大幅に向
上し、容器用の加工に十分耐えられる鋼板が得られるこ
とを見い出した。Therefore, the present inventors conducted various studies on methods of pre-plating the plating original plate by electroplating prior to hot-dip aluminum plating in order to improve workability, and based on the results, we decided to use Cr, Ni, Cr-Ni alloy, etc. for pre-plating. It has become clear that the formation of an alloy layer is significantly suppressed and the workability is extremely improved when the upper layer is plated with Fe. However, it was found that such pre-plating alone was not sufficient as it required severe workability as a material for containers. As an improvement measure, the aluminum-plated steel sheet produced in this way is further cold-rolled, the alloy layer is finely crushed into thinner layers, and then heat-treated at a temperature and time range that does not cause the formation of the alloy layer. It has been discovered that the hardened structure caused by inter-rolling becomes softer, greatly improving workability, and producing a steel sheet that can withstand processing for containers.
このような方法で製造されたアルミニウムめっき鋼板は
加工性とともにアルミニウム皮膜によって耐食性、及び
外観もすぐれている。尚、本発明でＮｉ、 Ｃｒ、 Ｎ
ｉ−Ｃｒ合金、またはＦｅをプレめっきする場合のめっ
き方法は通常行われるどのような方法でも良いが、作業
性、コストの点から電気めっきが好ましい。The aluminum-plated steel sheet manufactured by such a method has excellent workability, corrosion resistance due to the aluminum coating, and appearance. In addition, in the present invention, Ni, Cr, N
Any conventional plating method may be used for pre-plating the i-Cr alloy or Fe, but electroplating is preferred from the viewpoint of workability and cost.
また溶融めっき後の鋼板の冷間圧延に際して圧下率を５
０％以上とした理由は、圧延によって合金層を砕いて薄
くするためには５０％以上の圧下率が必要であるからで
ある。In addition, when cold rolling the steel plate after hot-dip coating, the reduction rate was set at 5
The reason why it is set to 0% or more is that a rolling reduction ratio of 50% or more is required in order to crush and thin the alloy layer by rolling.
さらに焼鈍温度を２５０〜６５０℃とした理由は２５０
℃未満では加工性が改善されず、一方６５０℃を越える
と合金層の生成により加工性が低下するためである。Furthermore, the reason why the annealing temperature was set to 250 to 650°C was 250°C.
This is because if the temperature is less than 650°C, the workability will not be improved, whereas if it exceeds 650°C, the workability will deteriorate due to the formation of an alloy layer.
第１表にプレめっきしないで通常の方法でアルミニウム
めっきを行った従来法の鋼板と本発明法の鋼板について
加工性と外観を比較した結果を示す。本発明方法で製造
されたアルミニウムめっき鋼板は外観美麗で加工性が良
好である。Table 1 shows the results of comparing the workability and appearance of a conventional steel plate that was aluminum-plated using a conventional method without pre-plating and a steel plate of the present invention. The aluminum-plated steel sheet manufactured by the method of the present invention has a beautiful appearance and good workability.
実施例１ 鋼の成分としてＣ： ０．０４％、Ｍｎ：０．２０％。Example 1 The steel components are C: 0.04% and Mn: 0.20%.
Ｓｉ：０．０１％、Ｓ：０．０１０％、Ｐ：０．０１５
％。Si: 0.01%, S: 0.010%, P: 0.015
%.
Ａ／ ： ０．０４０％、残部がＦｅのものを用いて冷
間圧延の済んだ０．９ ｍｍの鋼板を電気的に脱脂、酸
洗を行い、電気めっきによりＮｉ、 Ｃｒ、 Ｎｉ −
Ｃｒ合金を各々１ ｇ ／ ｎｉめっきし、さらにその
上に鉄をＬｏｇ／ボめっきした鋼板を３種準備し、これ
らの鋼板を通常のゼンジマー法によって加熱して表面の
酸化鉄を還元し、溶融アルミニウムめっき浴の中へ浸漬
させアルミニウムを２８０ｇ／ｎ（（両面）めっきした
。得られためっき鋼板を冷間圧延によって０．３ ｍｍ
まで薄く圧延し、次に還元性雰囲気中で５００℃で１時
間保定して、熱処理を施して容器用鋼板を製造した。こ
のようにして製造されたアルミニウムめっき鋼板は外観
がきれいで、めっき密着性も優れていた。A/: 0.040%, the balance being Fe, a cold-rolled 0.9 mm steel plate was electrically degreased and pickled, and electroplated with Ni, Cr, Ni −
Three types of steel plates each plated with 1 g/ni of Cr alloy and further plated with Log/Bottom iron are prepared, and these steel plates are heated by the normal Sendzimer method to reduce the iron oxide on the surface and melt. It was immersed in an aluminum plating bath and plated with 280 g/n (both sides) of aluminum.The obtained plated steel sheet was cold rolled to a thickness of 0.3 mm.
The steel sheet was rolled to a thin thickness and then maintained at 500° C. for 1 hour in a reducing atmosphere to undergo heat treatment to produce a steel sheet for containers. The aluminum-plated steel sheet produced in this manner had a beautiful appearance and excellent plating adhesion.
比較材として鋼成分として全く同じものを冷間圧延で０
．３ ｍｍとし、プレめっきを施さすアルミニウムめっ
きしたものを用いた。比較材はめっき後の外観も悪く、
めっき密着性も不良であった。この両者を容器材料の素
材として用い、ブランク径１３５ｍｍの供試材で２回の
絞り加工を行い、次いでしごき率６７％（３回の合計）
の条件でＤＩ成型を行った。本発明品は良好な成型性を
示した。As a comparative material, steel with exactly the same composition was cold-rolled to 0.
．． 3 mm, and was plated with aluminum and subjected to pre-plating. The comparative material also had a poor appearance after plating.
Plating adhesion was also poor. Using both of these materials as container materials, drawing was performed twice using a sample material with a blank diameter of 135 mm, and then the ironing rate was 67% (total of 3 times).
DI molding was performed under the following conditions. The product of the present invention showed good moldability.
従来のものはめっきが剥離した。The plating of the conventional product peeled off.
（発明の効果）
本発明によれば新規な容器材料を安価に供給することが
できる。(Effects of the Invention) According to the present invention, a novel container material can be supplied at low cost.
Claims (1)
プレめっきし、さらにその上層にＦｅをめっきした後、
溶融アルミニウムめっきを施し、次いで冷間圧延により
５０％以上の圧下率で圧延を行い、その後２５０〜６５
０℃で焼鈍することを特徴とする加工性と耐食性が良好
な容器用アルミニウムめっき鋼板の製造方法。After pre-plating Ni, Cr, or Ni-Cr alloy on the surface of the steel plate and further plating Fe on the upper layer,
Hot-dip aluminum plating is applied, then cold rolling is performed at a reduction rate of 50% or more, and then 250 to 65
A method for producing an aluminum-plated steel sheet for containers having good workability and corrosion resistance, the method comprising annealing at 0°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63042588A JP2593681B2 (en) | 1988-02-25 | 1988-02-25 | Method for producing aluminum-plated steel sheet for containers with good workability and corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63042588A JP2593681B2 (en) | 1988-02-25 | 1988-02-25 | Method for producing aluminum-plated steel sheet for containers with good workability and corrosion resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01215999A true JPH01215999A (en) | 1989-08-29 |
| JP2593681B2 JP2593681B2 (en) | 1997-03-26 |
Family
ID=12640222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63042588A Expired - Fee Related JP2593681B2 (en) | 1988-02-25 | 1988-02-25 | Method for producing aluminum-plated steel sheet for containers with good workability and corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2593681B2 (en) |
-
1988
- 1988-02-25 JP JP63042588A patent/JP2593681B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2593681B2 (en) | 1997-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |