JPS60110861A - Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatment - Google Patents
Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatmentInfo
- Publication number
- JPS60110861A JPS60110861A JP58217144A JP21714483A JPS60110861A JP S60110861 A JPS60110861 A JP S60110861A JP 58217144 A JP58217144 A JP 58217144A JP 21714483 A JP21714483 A JP 21714483A JP S60110861 A JPS60110861 A JP S60110861A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- alloy
- treatment
- chemical conversion
- hot dipping
- 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 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000011282 treatment Methods 0.000 title claims description 31
- 238000006243 chemical reaction Methods 0.000 title claims description 6
- 239000000126 substance Substances 0.000 title claims description 6
- 229910001297 Zn alloy Inorganic materials 0.000 title claims description 5
- 238000007598 dipping method Methods 0.000 title abstract 3
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 239000011247 coating layer Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 abstract description 10
- 239000000956 alloy Substances 0.000 abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract description 7
- 238000000576 coating method Methods 0.000 abstract description 7
- 229910018137 Al-Zn Inorganic materials 0.000 abstract description 6
- 229910018573 Al—Zn Inorganic materials 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000007747 plating Methods 0.000 description 16
- 229910019142 PO4 Inorganic materials 0.000 description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 14
- 239000010452 phosphate Substances 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 11
- 239000010410 layer Substances 0.000 description 11
- 238000010422 painting Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000011701 zinc Substances 0.000 description 5
- 238000010306 acid treatment Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は１ヒ成処理性に優れるＡｌ若しくはＡｌ−１１
１合金の溶融めっき鋼板に係り、詳しくは、塗装処理＋
１．！Ｉの前処理としてリン酸塩処理が支障なく行なう
ことができ、ＡＩ若しくはＡｌ −Ｚｎ合金の溶融めっ
き層の特性たる高耐食性を最大限に発揮できる溶融めっ
き鋼板に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides aluminum or Al-11 which has excellent heat treatment properties.
1 alloy hot-dip plated steel sheet, for details, please refer to painting treatment +
1. ! The present invention relates to a hot-dip plated steel sheet in which phosphate treatment can be carried out without any problem as a pre-treatment for I, and can maximize the high corrosion resistance characteristic of the hot-dip plated layer of AI or Al-Zn alloy.
鋼板の耐食性を向上する方法の一つとして溶融Ｚｒ＋め
っき法があり、その製品である溶融Ｚｎめつき鋼板は建
材、自動車、家電など種々の用途に広く使用されている
。近年、これらの分野で耐食性を主とした品質向上がさ
かんに試みられており、そのうちのいくつかは既に製品
化され一〇いる。ここで品質向上のために採用されてい
る方法はＺｎ中へＡＩを主とする金属元素を添加する方
法がほとんどであり、添加母の大小によりその製品の品
質上の特徴はかなり異なったものになっている。One of the methods for improving the corrosion resistance of steel sheets is the hot-dip Zr+ plating method, and the product, hot-dip Zn-plated steel sheets, is widely used in various applications such as building materials, automobiles, and home appliances. In recent years, many attempts have been made to improve quality, mainly corrosion resistance, in these fields, and some of these have already been commercialized. Most of the methods used to improve quality here involve adding metal elements, mainly AI, to Zn, and the quality characteristics of the product vary considerably depending on the size of the additive. It has become.
それらの中で従来のＺｎめつき鋼板に近い品質を持つも
のとして約５％程度のｉと第３元素を添加したＡＩ！−
Ｚｎ合金溶融めつぎ鋼板が開発されており、これらの鋼
板は従来の１１）めつぎ鋼板に比べ耐食性が格段に向上
したといわれる。Among them, AI with approximately 5% i and a third element added has a quality close to that of conventional Zn-plated steel sheets! −
Zn alloy hot-dipped steel sheets have been developed, and these steel sheets are said to have significantly improved corrosion resistance compared to conventional 11) metal sheets.
更に、めっき図中にＺｎを含まないＡＩｌめっき鋼板も
Ｚｎめっき鋼板より耐食性に優れるといわれる。−
また、口のように耐食性に侵れるＡＩｌやＡｌ−１Ｏ合
金の溶融めっき鋼板（以下、これら２種の溶融めっぎ鋼
板を単に鋼板という。）は未塗装で使用されることもあ
るが、多くの場合、塗装して使用され、この塗装は連続
ラインで行なわれる。しかし、塗装時には塗膜密着性向
上のために前処理としてリン酸塩処理等の化成処理が行
なわれるが、これらめっき鋼板では処理液中にへｌｌｆ
蓄積し−Ｃリン酸塩処理が困難になり、ｖＩＵてＡｌ若
しくはＡｌ−Ｚｎ合金のめっき層としての特性を十分に
いかずことができない。Furthermore, an AIl-plated steel sheet that does not contain Zn in its plating pattern is also said to have better corrosion resistance than a Zn-plated steel sheet. - In addition, hot-dip coated steel sheets made of Al and Al-1O alloys (hereinafter, these two types of hot-dip steel sheets are simply referred to as steel sheets), which are susceptible to corrosion resistance, are sometimes used unpainted. , is often used after being painted, and this painting is done in a continuous line. However, when painting, chemical conversion treatments such as phosphate treatment are performed as a pretreatment to improve paint film adhesion, but these plated steel sheets do not contain llf in the treatment solution.
As a result, the -C phosphate treatment becomes difficult, and the properties of the plating layer of Al or Al--Zn alloy cannot be fully utilized in vIU.
１−ムわも、塗装に先立って、めっき鋼板にリンｌＳ！
２塩処理を適用すると、そのＡｌ若しくはＡｌ−１ｒ＋
合金のめっき層中に含まれているＡＩがリン酸処理液中
に除々に蓄積し、次第にリン酸塩処理が困難になる。従
って、このめっき鋼板の化成処理どしてリン酸塩処理は
不適で、クロメ・−１〜処Ｌ！Ｉ！笠の方法によらざる
を得ない。その結果、塗装ラインの化成処理設備として
はリン酸塩処理どクロメート処理の設備をそなえ、めっ
き鋼板の種類に応じて切りかえる必要があり、操業上き
わめて不便である。1-Also, before painting, apply phosphorus to the plated steel plate!
When di-salt treatment is applied, the Al or Al-1r+
AI contained in the plating layer of the alloy gradually accumulates in the phosphating solution, making phosphate treatment gradually difficult. Therefore, phosphate treatment such as chemical conversion treatment of this plated steel sheet is not suitable, and Kurome -1 to L! I! I have no choice but to use Kasa's method. As a result, the chemical conversion treatment equipment in the painting line must be equipped with phosphate treatment or chromate treatment equipment, which must be switched depending on the type of plated steel sheet, which is extremely inconvenient for operations.
更に、表面のめっき層の耐食性も損なわれて好ましくな
い。Furthermore, the corrosion resistance of the surface plating layer is also impaired, which is not preferable.
そこで、本発明者等は上記問題点について種々の研究を
重ねたところ、めっき鋼板の表面上にＺｎ等の被覆層を
形成することによって、上記問題点が解決できることを
見出した。The inventors of the present invention have conducted various studies regarding the above-mentioned problems, and have found that the above-mentioned problems can be solved by forming a coating layer of Zn or the like on the surface of a plated steel sheet.
本発明はこの知見事実にもとずいて成立するものであっ
て、具体的には、塗装時に前処理としてリン酸処理を行
なう際に全く支障がなく適合でき、従来例の如く連続し
て塗装でき、更に表面めっき層の特性たる耐食性を十分
にいかすことができるめっき鋼板を提案する。The present invention is based on this knowledge and fact, and specifically, it can be applied without any problem when performing phosphoric acid treatment as a pre-treatment during painting, and it can be applied continuously as in the conventional example. We propose a plated steel sheet that can be used to improve corrosion resistance, and that can also fully utilize the corrosion resistance characteristic of the surface coating layer.
以下、本発明について詳−しく説明する。The present invention will be explained in detail below.
まず、冷延鋼板は常法の通り脱脂、酸洗等の前処理や、
フラックス処理を行なってから、溶融ＡＩ浴中若しくは
溶融ｊ／−Ｉｎ浴中に浸漬し、鋼板の表面にＡｌ若しく
はＡｌ−Ｚｎ合金の溶融めっき層を形成する。First, cold-rolled steel sheets undergo pretreatment such as degreasing and pickling as usual.
After flux treatment, the steel plate is immersed in a molten AI bath or a molten J/-In bath to form a hot-dip plating layer of Al or Al-Zn alloy on the surface of the steel plate.
次に、このめっき隔の表面に被覆層を形成し、この被Ｗ
Ｉ層によってめっき層をおおう。この被覆層は７口のみ
からなるものが好ましいが、必ずしも１１１の１ノから
ならなくとも、１重石％（以下、％という。）以下のＡ
Ｉおよび／または不可避的不純物を含ｌして残余が２０
からなるもので十分であって、このように鋼板表面のめ
つき閾を被覆１台でＪｊおうど、塗装時の前処理として
リン酸塩処理を適用しくも支障がなく、めっき師の耐食
１７１笠の特性が十分に発揮できる。すなわち、塗装前
処理どして上記の如くリン酸塩処理をめっき鋼板に適用
りれば、めつぎ岡がＡｌ若しくはＡ／＝ｌｌ＋合金から
成るため、上記のように処理１１に中のＡＩが次第に多
くなる。その原因はリンｎ！ｉ塩処理に際しＣめつき層
の一部、つまり、約（１，１ｔ、ｔ ｍ稈麿のめっき層
が溶解し、その中のＡＩがリン酸塩被１９の形成に消費
されず処理液中に残留するためである。Next, a coating layer is formed on the surface of this plating gap, and this coating layer is
Cover the plating layer with the I layer. It is preferable that this coating layer consists of only 7 holes, but it does not necessarily have to consist of 1 of 111.
The remainder is 20 liters including I and/or unavoidable impurities.
In this way, it is sufficient to coat the plating threshold of the steel sheet surface with one machine, and there is no problem in applying phosphate treatment as a pre-treatment during painting, and the corrosion resistance of the plater is 171. characteristics can be fully demonstrated. In other words, if phosphate treatment is applied to the plated steel sheet as described above as a pre-painting treatment, since the metal plate is made of Al or A/=ll+ alloy, the AI in treatment 11 will be treated as described above. The number gradually increases. The reason is Rin n! During the i-salt treatment, a part of the C plating layer, that is, about (1,1 t, t m) of the plating layer of the culm, is dissolved, and the AI therein is not consumed to form the phosphate coating 19 and remains in the treatment solution. This is because it remains in the
この点から、本発明においてはこのめっき鋼板表面のめ
つき層をＩｎ等からなる被ＷＩ囮でおおう。従って、リ
ン酸処理時におｔ−Ｊる処理液中の八ｌの増加は防止で
きると共に、Ａｌ若しくはＡＩ−Ｉｎ合金のめつき層本
来の特性、つまり、高耐食性が損なわれず、十分にいか
すことができる。From this point of view, in the present invention, the plating layer on the surface of the plated steel sheet is covered with a WI decoy made of In or the like. Therefore, it is possible to prevent the increase in 8L in the treatment solution during phosphoric acid treatment, and the original characteristics of the plating layer of Al or AI-In alloy, that is, high corrosion resistance, are not impaired and can be fully utilized. I can do it.
更に、このめっき鋼板であると、一般のＺｎめっき鋼板
と同じ工程でリン酸塩処理ならびに塗装を行なうことが
できる。Furthermore, this plated steel sheet can be subjected to phosphate treatment and painting in the same process as general Zn-plated steel sheets.
なお、めっき鋼板の表面をＺｎ等の被覆層でおおう方法
としては、何れの方法を用いることができるが、一般に
は、電気めっき法、溶融めっき法、粉末を被覆する方法
、真空蒸着法などが採用できる。Ｉｎ等の被覆に当って
はＡｄまたはＡｌ−Ｚｎ合金のめっき鋼板の表面を均一
に被覆できればよく、被覆図の厚さはリン酸塩処理部の
Ｉｎの溶解量から判断して０．１μｍ１以上とすれば十
分であり、むやみに厚くする必要はない。Any method can be used to cover the surface of the plated steel sheet with a coating layer such as Zn, but in general, electroplating, hot-dip plating, powder coating, vacuum evaporation, etc. Can be adopted. When coating In, etc., it is sufficient that the surface of the Ad or Al-Zn alloy plated steel sheet can be uniformly coated, and the thickness of the coating should be 0.1 μm or more, judging from the amount of In dissolved in the phosphate treated area. This is sufficient, and there is no need to make it unnecessarily thick.
また、被覆層の組成は上記の如＜１１１のみから成る以
外に１．０％以下の八ｌとその他の不可避的不純物を含
ませる口とができるが、その理由は次の通りである。Further, the composition of the coating layer may contain 1.0% or less of 8L and other unavoidable impurities in addition to the above-mentioned composition of <111. The reason for this is as follows.
すなわち、りン酸塩処理の際に処理液がめっき鋼板に付
着して持ち去られるのでＡ／が１．０％以下であれば処
理液中への八ｄの蓄積は事実１生じない。That is, since the treatment solution adheres to the plated steel sheet during phosphate treatment and is carried away, if A/ is 1.0% or less, no accumulation of 8d in the treatment solution occurs.
以下、実施例について説明する。Examples will be described below.
まず、厚さ０．５ｍｍの冷延鋼板を脱脂し、ＡＸガス雰
囲気中で溶融めっきを行なった。めっき浴の組成を調節
してめっき間中のＡｌｌ 、 Ｉｎ、Ｓｉ、［ｅの含有
聞が第１表に示すＪ：うな６種類の溶融めっき鋼板を得
た。First, a cold-rolled steel plate with a thickness of 0.5 mm was degreased and hot-dipped in an AX gas atmosphere. By adjusting the composition of the plating bath, six types of hot-dip plated steel sheets were obtained, with the contents of All, In, Si, and [e shown in Table 1 shown in Table 1].
これら各めっき鋼板について硫酸亜鉛めっき浴を用いて
通常の電気めっきを行なって厚さ０．１μｍおよび０．
５μｍのＺｎの被覆間を付着させた。Each of these plated steel sheets was electroplated using a zinc sulfate plating bath to a thickness of 0.1 μm and 0.1 μm.
A 5 μm Zn coating was deposited.
このようにして得られた本発明に係るめっき鋼板（Ｎｏ
、１〜１２）おＪ：び従来例（Ｈｏ、１３〜１８）の溶
融めっき鋼板にリン酸塩処理を施し、処理液中の八１ｍ
の増加をみたところ、その結果は第１表に示す通りであ
−）だ。The plated steel sheet according to the present invention thus obtained (No.
, 1 to 12) J: and conventional examples (Ho, 13 to 18) were subjected to phosphate treatment, and 81m in the treatment solution was
The results are shown in Table 1).
第１表から明らかなように、従来例ではリン酸塩処理液
中のＡｌ量が顕箸に増加しておらず、従来例の溶融亜鉛
めっき鋼板と同じ工程でリン酸塩処理ならＯに塗装処理
できることがわかる。As is clear from Table 1, in the conventional example, the amount of Al in the phosphating solution did not increase significantly, and if the phosphate treatment was performed in the same process as the conventional hot-dip galvanized steel sheet, it would be coated with O. It turns out that it can be processed.
なお、上記のところでは、リン酸処理に適用した例を中
心に説明したが１、本発明に係るめっき鋼板はこれ以外
の化成処理にも広く適用できる。Although the above description has focused on examples applied to phosphoric acid treatment, the plated steel sheet according to the present invention can be widely applied to other chemical conversion treatments.
特ミ′［出願人 川前製鉄株式会社 代 理 人 弁理士 松 下 義 勝 弁聡士 副 島 文 雄Tokumi' [Applicant: Kawamae Steel Co., Ltd. Representative Patent Attorney Yoshikatsu Matsushita Ben Satoshi Vice Shima Fumiyu
Claims (1)
めっきＮを具え、このめつき岡の表面を１重量％以下σ
）ＡｌおＪ：び／または不可避的不純物を含み残余ｈ”
ｌｎからなる被覆層あるいはｌｎからなる被覆層Ｃ被覆
して成ることを特徴とする化成処理性に優れるＡｌ若し
くは１−Ｚｎ合金の溶融・め・〕さ鋼板。The surface of the steel plate is coated with hot-dip N of Al or AA'-Zn alloy, and the surface of the plated plate is coated with σ of 1% by weight or less.
) Al and/or residue containing unavoidable impurities.
1. A molten steel sheet of Al or 1-Zn alloy having excellent chemical conversion treatment properties, characterized by being coated with a coating layer made of ln or a coating layer C made of ln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58217144A JPS60110861A (en) | 1983-11-18 | 1983-11-18 | Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58217144A JPS60110861A (en) | 1983-11-18 | 1983-11-18 | Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60110861A true JPS60110861A (en) | 1985-06-17 |
Family
ID=16699541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58217144A Pending JPS60110861A (en) | 1983-11-18 | 1983-11-18 | Steel sheet coated with al or al-zn alloy by hot dipping and provided with superior suitability to chemical conversion treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60110861A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05148668A (en) * | 1991-11-29 | 1993-06-15 | Daido Steel Sheet Corp | Aluminum-zinc-silicon alloy coating and its manufacture |
| US5429881A (en) * | 1990-05-23 | 1995-07-04 | Toyota Jidosha Kabushiki Kaisha | Surface treated aluminum or aluminum alloy material |
-
1983
- 1983-11-18 JP JP58217144A patent/JPS60110861A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5429881A (en) * | 1990-05-23 | 1995-07-04 | Toyota Jidosha Kabushiki Kaisha | Surface treated aluminum or aluminum alloy material |
| JPH05148668A (en) * | 1991-11-29 | 1993-06-15 | Daido Steel Sheet Corp | Aluminum-zinc-silicon alloy coating and its manufacture |
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