JPH0953187A - Hot-dip aluminized steel sheet having excellent workability and corrosion resistance - Google Patents
Hot-dip aluminized steel sheet having excellent workability and corrosion resistanceInfo
- Publication number
- JPH0953187A JPH0953187A JP7207989A JP20798995A JPH0953187A JP H0953187 A JPH0953187 A JP H0953187A JP 7207989 A JP7207989 A JP 7207989A JP 20798995 A JP20798995 A JP 20798995A JP H0953187 A JPH0953187 A JP H0953187A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- hot
- oxide film
- plating
- dip
- 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.)
- Withdrawn
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 10
- 230000007797 corrosion Effects 0.000 title claims abstract description 10
- 229910000680 Aluminized steel Inorganic materials 0.000 title abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 45
- 238000007747 plating Methods 0.000 claims abstract description 42
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000005097 cold rolling Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 8
- 238000005275 alloying Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 229910018125 Al-Si Inorganic materials 0.000 description 3
- 229910018520 Al—Si Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000010731 rolling oil Substances 0.000 description 3
- 229910052718 tin Inorganic materials 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000655 Killed steel Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001295 No alloy Inorganic materials 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- -1 aluminum metals Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
-
- 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
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0222—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating in a reactive atmosphere, e.g. oxidising or reducing atmosphere
-
- 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
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/026—Deposition of sublayers, e.g. adhesion layers or pre-applied alloying elements or corrosion protection
-
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Coating With Molten Metal (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、加工性・耐食性・
さらに耐熱性・溶接性等に優れた溶融Ａｌ系めっき鋼
板、あるいは溶融Ａｌ−Ｓｉ系合金めっき鋼板に関する
ものであり、自動車の排気系部品材料、ガソリンタンク
材料、暖房用ストーブの熱反射板材料、屋根・壁等各種
建築材料に幅広く使用されるものである。TECHNICAL FIELD The present invention relates to workability, corrosion resistance,
Further, the present invention relates to a hot-dip Al-plated steel sheet having excellent heat resistance and weldability, or a hot-dip Al-Si alloy-plated steel sheet, which is used for automobile exhaust system parts materials, gasoline tank materials, heating stove heat reflection plate materials, It is widely used for various building materials such as roofs and walls.
【０００２】[0002]
【従来の技術】従来、アルミめっき鋼板は、溶融めっき
・電気めっき・真空蒸着等の方法で製造可能なことが知
られているが、品質・製造コスト・量産性等総合的にみ
て溶融めっき法が工業的に幅広く採用されている（例え
ば、特公昭６２−４０４０６号公報、特公昭６３−４４
８２５号公報）。この溶融めっき法は、連続鋳造法によ
り鋳造された鋼片スラブを、熱間圧延、表面スケールを
除去する酸洗、及び冷間圧延した鋼板をめっき原板とし
て使用する。この鋼板を、酸化炉あるいは無酸化炉中に
おいて加熱し、鋼板表面の冷間圧延油を焼却・除去する
と共に、水素雰囲気中での加熱により原板の再結晶焼鈍
とめっきに最適な表面を準備し、溶融アルミ浴に浸漬す
る。鋼板表面と溶融アルミの反応により良好な濡れ状態
が確保され、ガスワイピングによる付着量調整後の冷却
により、めっきが完了する。2. Description of the Related Art Conventionally, it has been known that aluminum plated steel sheets can be manufactured by methods such as hot dipping, electroplating, vacuum deposition, etc. Are widely used industrially (for example, Japanese Patent Publication No. 62-40406 and Japanese Patent Publication No. 63-44).
825). In this hot dipping method, a steel plate slab cast by a continuous casting method is hot-rolled, pickled to remove surface scale, and cold-rolled. This steel sheet is heated in an oxidizing furnace or a non-oxidizing furnace to incinerate and remove the cold rolling oil on the surface of the steel sheet, and by heating in a hydrogen atmosphere, prepare an optimal surface for recrystallization annealing and plating of the original sheet. , Soak in molten aluminum bath. A good wet state is secured by the reaction between the surface of the steel sheet and the molten aluminum, and the plating is completed by cooling after adjusting the adhesion amount by gas wiping.
【０００３】[0003]
【発明が解決しようとする課題】このような溶融めっき
方法において製造されるアルミめっき鋼板の場合、純ア
ルミをめっき金属として選択すると、素地との反応性が
強く、約１０μ前後の合金層が形成され、絞り加工ある
いは折曲げ加工において、合金層部分の延性が乏しく合
金層が破壊され、めっき剥離を起こす。シリコンを５〜
１０％程度含むＡｌ−Ｓｉ合金をめっき金属として選択
すると、かなり合金化反応が抑制され、めっき金属と鋼
板の界面には約３μ程度の合金層が形成される。合金層
が薄くなることにより加工性はかなり向上し、日本国内
ではこのＡｌ−Ｓｉ合金めっき鋼板が多くの分野に使用
されているが、厳しい加工条件下での使用は限界があ
る。例えば、絞り加工を行う場合、金型（ダイスのコー
ナーＲ）の形状として、板厚の６倍以上の値に設定する
必要がある。その値以下では、絞り加工時に厳しい圧縮
と曲げ戻し後の引っ張り変形により合金層が破壊され、
めっき剥離を生じることが知られている。本発明は、既
存の溶融アルミめっき鋼板の難点である合金層起因の加
工トラブルを低減することが課題である。In the case of an aluminized steel sheet produced by such a hot dip plating method, when pure aluminum is selected as the plating metal, it has a strong reactivity with the substrate and an alloy layer of about 10 μ is formed. In the drawing process or the bending process, the ductility of the alloy layer portion is poor and the alloy layer is destroyed, resulting in stripping of the plating. 5 to silicon
When an Al-Si alloy containing about 10% is selected as the plating metal, the alloying reaction is suppressed considerably, and an alloy layer of about 3 μ is formed at the interface between the plating metal and the steel sheet. The workability is considerably improved by thinning the alloy layer, and this Al-Si alloy-plated steel sheet is used in many fields in Japan, but its use under severe working conditions is limited. For example, when performing drawing, it is necessary to set the shape of the die (corner R of the die) to a value that is 6 times or more the plate thickness. Below that value, the alloy layer is destroyed by severe compression during drawing and tensile deformation after bending back,
It is known to cause plating peeling. An object of the present invention is to reduce processing troubles due to an alloy layer, which is a difficulty of existing hot-dip aluminized steel sheets.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、この課題
を解決するために種々の可能性を検討した結果、合金層
の厚みを２μｍ以下、好ましくは１μｍ以下、理想的に
は合金層の存在しない鋼表面構成とすれば良いことを見
出した。そして、従来とは異なった発想にて種々の可能
性を検討した結果、酸化物を利用し、鋼表面とアルミめ
っき層との間に酸化物層を形成させれば、合金化反応を
抑制でき合金層の殆ど存在しない鋼表面構成とできるこ
とを知見し、本発明に至った。As a result of studying various possibilities for solving this problem, the present inventors have found that the thickness of the alloy layer is 2 μm or less, preferably 1 μm or less, ideally the alloy layer. It has been found that a steel surface structure that does not exist is good. Then, as a result of studying various possibilities with an idea different from the conventional one, if an oxide layer is formed between the steel surface and the aluminum plating layer by using an oxide, the alloying reaction can be suppressed. The present inventors have found that a steel surface structure having almost no alloy layer can be formed, and completed the present invention.
【０００５】本発明の要旨は、被めっき鋼板の表面に、
厚みが２．０μｍ以下で、Ｆｅ，Ａｌ、またはＦｅ，Ａ
ｌと、Ｓｉ，Ｍｎ，Ｍｇの３種の内の１種または２種以
上と、必要に応じてさらにＮｉ，Ｃｕ，Ｓｎの１種また
は２種以上の酸化物皮膜層を形成し、その表面にＡｌ、
またはＡｌと、Ｓｉ，Ｍｎ，Ｍｇの３種の内の１種また
は２種以上の合金めっき層を形成したことを特徴とする
優れた加工性・耐食性を有する溶融アルミ系めっき鋼板
である。なお、本発明の酸化物皮膜層は鋼板表面全面に
層状に形成されるが、部分的に形成されていない場合で
も十分効果は得られる。The gist of the present invention is that the surface of a plated steel sheet is
Fe, Al or Fe, A with a thickness of 2.0 μm or less
1, and one or more of three kinds of Si, Mn, and Mg, and, if necessary, one or more kinds of oxide film layers of Ni, Cu, and Sn are further formed, and the surface thereof is formed. Al,
Alternatively, it is a hot-dip aluminum-plated steel sheet having excellent workability and corrosion resistance, which is formed by forming an alloy plating layer of Al and one or more of Si, Mn, and Mg. The oxide film layer of the present invention is formed in layers on the entire surface of the steel sheet, but sufficient effects can be obtained even if it is not formed partially.
【０００６】溶融アルミめっき鋼板の合金層厚みを低減
するための試みは、過去において、色々な検討がされて
いる。例えば、鋼板表面にアルミ以外の他の金属を事前
にめっきし反応性をコントロールする方法、アルミめっ
き浴あるいは鋼中に色々な元素を添加し合金化反応抑制
をはかる方法等がその代表的なものである。本発明者ら
も同様の検討を数多く行ったが、必ずしも成功するに至
っていない。[0006] Various attempts have been made in the past to try to reduce the alloy layer thickness of the hot-dip aluminized steel sheet. Typical examples are a method of previously plating a metal other than aluminum on the surface of a steel sheet to control reactivity, a method of adding various elements to an aluminum plating bath or steel to suppress alloying reaction, etc. Is. The present inventors have made many similar studies, but have not necessarily succeeded.
【０００７】溶融アルミめっきは非常な高温（めっき浴
温：６３０〜７２０℃）で行われる。鋼板は、めっき浴
への浸漬、ガスワイピングによる付着量調整、凝固スパ
ングル（アルミの凝固結晶模様）調整のための特殊処理
等を経たのち、急速冷却されるが、６３０℃以上の温度
で１０秒以上の反応時間があり、鋼板表面と溶融アルミ
は激しく合金化し、通常３μ以上の合金層の形成は避け
えないものであった。Hot-dip aluminum plating is performed at a very high temperature (plating bath temperature: 630 to 720 ° C.). The steel sheet is rapidly cooled after being subjected to a special treatment such as immersion in a plating bath, adjustment of the amount of adhesion by gas wiping, adjustment of solidification spangle (solidified crystal pattern of aluminum), but at a temperature of 630 ° C or higher for 10 seconds. Due to the above reaction time, the surface of the steel sheet and the molten aluminum were vigorously alloyed, and the formation of an alloy layer of 3 μm or more was inevitable.
【０００８】本発明では、鋼板表面をまず酸化物で被覆
する。その後、この酸化物皮膜を破壊することなく溶融
アルミめっき浴に侵入させる。酸化物皮膜は一般的に高
融点であり、アルミめっき浴に浸漬しても熱的に溶解す
ることなく安定に存在するが、酸素との親和力の面では
アルミの方が強く、徐々にアルミの酸化物に変換され
る。例えば、鉄とアルミでは、アルミの方が圧倒的に酸
素との親和力が強いため、鉄の酸化物皮膜はアルミ酸化
物に変化してゆくが、この鉄の酸化物とアルミの酸化物
から成る酸化物皮膜は溶解せず残存するため、被めっき
鋼板と溶融アルミの金属同志が直接接触せず、合金化反
応を抑制する効果が期待できる。In the present invention, the surface of the steel sheet is first coated with an oxide. After that, the oxide film is allowed to enter the molten aluminum plating bath without being destroyed. The oxide film generally has a high melting point and remains stable without being thermally dissolved even when immersed in an aluminum plating bath, but aluminum is stronger in terms of affinity with oxygen, and gradually Converted to oxide. For example, in iron and aluminum, aluminum has an overwhelmingly strong affinity with oxygen, so the oxide film of iron changes to aluminum oxide, which consists of iron oxide and aluminum oxide. Since the oxide film remains undissolved and remains, the plated steel sheet and the molten aluminum metals do not come into direct contact with each other, and an effect of suppressing the alloying reaction can be expected.
【０００９】以下に本発明鋼板の製造方法につき説明す
る。本発明では、連続鋳造法により鋳造された鋼片スラ
ブを、熱間圧延、表面スケールを除去する酸洗、及び冷
間圧延した鋼板をめっき原板として使用する。溶融めっ
きラインにおいて、酸化炉あるいは無酸化炉での加熱工
程において、冷間圧延時に付着した圧延油を燃焼・除去
した後、鋼板表面に適当な厚さの酸化膜（例えば、０．
０５〜１．０μ程度）を形成させる。通常のめっき法に
おいては、出来るだけ表面を酸化させずに圧延油を燃焼
・除去した後、やむをえず形成された鋼板表面酸化膜を
水素還元し、めっきの濡れ性を確保する。The method of manufacturing the steel sheet of the present invention will be described below. In the present invention, a steel plate slab cast by a continuous casting method is hot-rolled, pickled to remove surface scale, and cold-rolled. In a hot dip coating line, in a heating process in an oxidation furnace or a non-oxidization furnace, after rolling oil adhered during cold rolling is burned and removed, an oxide film having an appropriate thickness (for example, 0.
05 to 1.0 μ) is formed. In a usual plating method, after rolling oil is burned and removed without oxidizing the surface as much as possible, the steel plate surface oxide film formed by necessity is hydrogen-reduced to secure the wettability of the plating.
【００１０】本発明では、鋼板表面を意識的に酸化し、
鋼板全面を酸化膜で被覆する。酸化膜で覆われた鋼板表
面を水素還元することなく、非酸化性雰囲気下にてアル
ミめっき浴に侵入させ、酸化物の金属アルミによる還元
反応を通じて濡れ性を確保する。形成される酸化物の種
類によってはクラックの多いものとなり、鋼板と溶融ア
ルミ金属との直接接触が起こり易くなるため、他の金属
を予備的にめっきすることにより、表面酸化物組成を変
化させることが出来る。また、場合によっては、鉄酸化
膜の初期還元反応を早めるため、Ｎｉ，Ｃｕ，Ｓｎ等の
金属あるいは合金を極く少量（０．００５〜０．５μ程
度）めっきし、その後の酸化処理によりより好ましい酸
化膜に変換することが可能である。In the present invention, the surface of the steel sheet is intentionally oxidized,
The entire surface of the steel sheet is covered with an oxide film. The surface of the steel sheet covered with the oxide film is not reduced with hydrogen, but is allowed to enter the aluminum plating bath in a non-oxidizing atmosphere, and the wettability is secured through the reduction reaction of the oxide with metallic aluminum. Depending on the type of oxide formed, many cracks will occur, and direct contact between the steel sheet and molten aluminum metal is likely to occur.Therefore, it is possible to change the surface oxide composition by preliminarily plating another metal. Can be done. In some cases, in order to accelerate the initial reduction reaction of the iron oxide film, a very small amount (about 0.005 to 0.5 μm) of a metal or alloy such as Ni, Cu, Sn is plated, and further oxidation treatment is performed. It can be converted into a preferable oxide film.
【００１１】酸化処理温度としては、４００〜７００℃
にて、酸化膜厚みとして０．０２〜１．０μ程度の酸化
膜を形成させ、酸化後、窒素・アルゴン等の非酸化性雰
囲気中に保ったまま、溶融アルミめっき浴に侵入させ
る。めっき浴より引き上げられた鋼板は付着量制御され
たのち、必要に応じスパングル（結晶模様）制御の特殊
処理が施されたのち冷却され、めっきを完了する。The oxidation treatment temperature is 400 to 700 ° C.
Then, an oxide film having a thickness of about 0.02 to 1.0 μm is formed, and after the oxidation, the molten aluminum plating bath is allowed to enter while being kept in a non-oxidizing atmosphere such as nitrogen and argon. The steel sheet pulled up from the plating bath is subjected to a coating amount control, and if necessary, a special treatment of spangle (crystal pattern) control is performed and then cooled to complete the plating.
【００１２】酸化物皮膜厚みは加工性に対して重要な意
味を有しており、本発明では酸化物皮膜剥離の観点より
２．０μｍ以下とする。すなわち、２．０μｍを超える
酸化物皮膜厚では、合金層の形成は実質的にないが、酸
化膜自体も硬くて脆い性質を有しており、加工時に酸化
膜が凝集破壊しめっき剥離の原因となる。また、酸化物
皮膜は、余り薄いと、溶融アルミと素地の金属鉄との局
部的な合金化反応が起こり、次いで全面的な合金化反応
へと進展するため、合金化反応を抑制するバリアー層と
しての機能が弱く、結果的に厚い合金化層を形成してし
まうことがある。従って０．０２μｍ以上の酸化物皮膜
厚があることが好ましい。The oxide film thickness has an important meaning for workability, and is set to 2.0 μm or less in the present invention from the viewpoint of oxide film peeling. That is, when the oxide film thickness exceeds 2.0 μm, the alloy layer is not substantially formed, but the oxide film itself is also hard and brittle, which causes cohesive failure of the oxide film during processing to cause plating delamination. Becomes If the oxide film is too thin, a local alloying reaction between the molten aluminum and the metallic iron of the base material occurs, and then progresses to a full-scale alloying reaction, so a barrier layer that suppresses the alloying reaction. As a result, a thick alloyed layer may be formed as a result. Therefore, it is preferable that the oxide film has a thickness of 0.02 μm or more.
【００１３】このようにして製造される溶融アルミめっ
き鋼板、あるいは溶融Ａｌ−Ｓｉ合金めっき鋼板は、そ
のめっき層構成において被めっき鋼板の表面に、厚みが
２．０μｍ以下で、Ｆｅ，Ａｌ、またはＦｅ，Ａｌと、
Ｓｉ，Ｍｎ，Ｍｇの１種または２種以上と、必要に応じ
てさらにＮｉ，Ｃｕ，Ｓｎの１種または２種以上の酸化
物皮膜層を形成し、その表面にＡｌ、またはＡｌと、Ｓ
ｉ，Ｍｎ，Ｍｇの１種または２種以上の合金めっき層を
形成した構造である。鋼板表面に存在する初期酸化皮膜
は、溶融アルミとの反応でＡｌ2 Ｏ3 を主体とする皮膜
へと変貌し、厚みが薄いため密着性は良く、めっき皮膜
の密着性を確保する上で重要な役割を果たす。The hot-dip aluminum-plated steel sheet or hot-dip Al-Si alloy-plated steel sheet produced in this manner has a thickness of 2.0 μm or less on the surface of the steel sheet to be plated in the plating layer structure, and Fe, Al, or Fe and Al,
One or two or more kinds of Si, Mn and Mg and, if necessary, one or more kinds of oxide film layers of Ni, Cu and Sn are further formed, and Al or Al and S and S are formed on the surface thereof.
This is a structure in which one or more alloy plating layers of i, Mn, and Mg are formed. The initial oxide film existing on the surface of the steel sheet transforms into a film mainly composed of Al 2 O 3 when it reacts with molten aluminum, and because of its thin thickness, it has good adhesion and is important for ensuring the adhesion of the plating film. Play a role.
【００１４】[0014]
【実施例】以下に本発明の実施例および比較例を示す。
そして、試験条件および試験結果を表１に示す。表１の
被めっき鋼板欄に記載の冷延済み鋼板（板厚０．８ｍ
ｍ）を表面清浄後、必要に応じて表１の下地めっきを鋼
板両面に施した。その後、溶融アルミめっきラインの無
酸化炉にて鋼板の加熱と共に表面を酸化させた。酸化は
予備試験にて求めた条件にて、酸化膜が所定厚み生成す
るように行った。酸化処理後、窒素雰囲気に保たれた炉
内にて、母材のアルミキルド鋼が十分焼鈍される温度と
時間保持したのち、表１のめっき組成と同組成のめっき
浴（浴温：表１）に導入した。めっき浴中にて、鋼板表
面酸化膜と溶融アルミを反応させ、十分な濡れ性が確保
された所で浴より引上げ、ガスワイピングによる付着量
制御を行い冷却した。EXAMPLES Examples of the present invention and comparative examples are shown below.
Table 1 shows the test conditions and test results. Cold-rolled steel sheet (sheet thickness 0.8 m described in the column for plated steel sheet in Table 1)
After the surface of m) was cleaned, the undercoat of Table 1 was applied to both sides of the steel sheet as needed. After that, the surface of the steel sheet was oxidized while being heated in a non-oxidizing furnace of a hot dip aluminum coating line. Oxidation was performed under the conditions determined in the preliminary test so that an oxide film with a predetermined thickness was formed. After the oxidation treatment, in a furnace kept in a nitrogen atmosphere, after holding the temperature and time for sufficiently annealing the base material aluminum killed steel, a plating bath having the same composition as the plating composition in Table 1 (bath temperature: Table 1) Introduced. In the plating bath, the oxide film on the surface of the steel sheet was reacted with molten aluminum, and when sufficient wettability was secured, it was pulled up from the bath, and the amount of adhesion was controlled by gas wiping to cool it.
【００１５】めっき鋼板の皮膜構成をＧＤＳ（Ｇｌｏｗ
Ｄｉｓｃｈａｒｇｅ Ｓｐｅｃｔｒｏｓｃｏｐｙ）法
にて分析した所、めっき金属と鋼板の中間に明確な酸素
のピークが観察され、酸化物皮膜の存在が確認された。
ＸＲＤ（Ｘ線回折）分析では、Ａｌ2 Ｏ3 とＦｅＯの存
在が確認された。また、酸化物皮膜厚みは非常に薄く、
顕微鏡では厳密な測定が困難である。そこで、予備的
に、各種条件で形成された酸化物皮膜の厚みを溶融めっ
きを行わずに重量法と偏光法を併用して測定して求めて
おき、溶融めっきまで行った場合の酸化物皮膜の厚みと
した。The coating composition of the plated steel sheet is represented by GDS (Glow
When analyzed by the Discharge Spectroscopy) method, a clear oxygen peak was observed between the plated metal and the steel sheet, and the presence of an oxide film was confirmed.
The presence of Al 2 O 3 and FeO was confirmed by XRD (X-ray diffraction) analysis. Also, the oxide film thickness is very thin,
Strict measurement is difficult with a microscope. Therefore, the thickness of the oxide film formed under various conditions is preliminarily measured and determined by using the gravimetric method and the polarization method in combination without hot-dip plating, and the oxide film when the hot-dip plating is performed. And the thickness.
【００１６】[0016]
【表１】 [Table 1]
【００１７】［試験方法］ 加工性：鋼板からブランク寸法２００ｍｍφの円盤を切
出し、ポンチ径１００ｍｍφ、ダイス肩Ｒ＝２．０ｍｍ
にて円筒絞り成形を行い、成形後のカップ外面にスクラ
ッチ疵を入れテープ剥離試験を行う。評価基準は以下の
通り。 ×× めっき皮膜が全面剥離したもの。 × 全面剥離ではないが、激しい剥離が認められたも
の。 〇 肉眼では殆ど剥離が認められないもの。 ◎ 全く剥離が認められないもの。[Test Method] Workability: A disk having a blank size of 200 mmφ was cut out from a steel plate, the punch diameter was 100 mmφ, and the die shoulder R was 2.0 mm.
Cylindrical drawing is carried out at, and scratches are put on the outer surface of the cup after molding to perform a tape peeling test. The evaluation criteria are as follows. XX The plating film is completely peeled off. B. Not peeled off entirely, but severe peeling was observed. -Peeling is hardly visible to the naked eye. ◎ No peeling was observed.
【００１８】耐食性：上記成形試験後の絞りカップの内
面に腐食液（１００ｐｐｍの蟻酸溶液）を注入し、４５
℃にて１０日後の腐食状態を観察する。 ×× 素地の鉄まで全面激しく腐食されたもの。 × 局部的に素地の鉄まで局部的に激しく腐食されたも
の。 〇 肉眼ではさほど腐食の認められないもの。 ◎ 殆ど腐食の認められないもの。Corrosion resistance: A corrosive liquid (100 ppm formic acid solution) was injected into the inner surface of the squeezing cup after the above-mentioned molding test, and 45
Observe the corrosion state after 10 days at ° C. XX The iron of the base material has been completely corroded. × Locally severely corroded to the base iron. 〇 Those that are not so corrosive to the naked eye. ◎ Almost no corrosion is observed.
【００１９】比較例 表１の被めっき鋼板欄に記載の冷延済み鋼板（板厚０．
８ｍｍ）を、溶融アルミめっきラインの無酸化炉にて鋼
板の加熱と共に表面を酸化させた。酸化は予備試験にて
求めた条件にて、酸化膜が約０．３μ生成するように行
った。酸化処理後、１２％水素を含む雰囲気中にて、母
材の低炭素アルミキルド鋼が十分焼鈍されると共に表面
酸化膜を還元するのに十分な温度と時間保持したのち、
表１のめっき組成と同組成のめっき浴（浴温表１）に導
入した。めっき浴中にて、鋼板表面酸化膜と溶融アルミ
を反応させ、十分な濡れ性が確保された所で浴より引上
げ、ガスワイピングによる付着量制御を行い冷却した。Comparative Example Cold-rolled steel sheet (sheet thickness: 0.
8 mm) was heated in a non-oxidizing furnace of a hot dip aluminum coating line to oxidize the surface of the steel sheet as it was heated. Oxidation was performed under the conditions determined in the preliminary test so that an oxide film of about 0.3 μm was formed. After the oxidation treatment, in the atmosphere containing 12% hydrogen, after the base material low carbon aluminum killed steel is sufficiently annealed and the surface oxide film is reduced and the temperature is maintained for a sufficient time,
It was introduced into a plating bath having the same composition as the plating composition shown in Table 1 (bath temperature Table 1). In the plating bath, the oxide film on the surface of the steel sheet was reacted with molten aluminum, and when sufficient wettability was secured, it was pulled up from the bath, and the amount of adhesion was controlled by gas wiping to cool it.
【００２０】めっき鋼板の皮膜構成をＧＤＳ（Ｇｌｏｗ
Ｄｉｓｃｈａｒｇｅ Ｓｐｅｃｔｒｏｓｃｏｐｙ）法
にて分析した所、めっき金属と鋼板の中間には酸素のピ
ークは観察されず、金属同志の反応にてめっきされたこ
とが確認された。顕微鏡観察では、表１の厚みの合金層
の存在が確認された。The coating composition of the plated steel sheet is changed to GDS (Glow
When analyzed by the Discharge Spectroscopy) method, no oxygen peak was observed between the plated metal and the steel sheet, and it was confirmed that the metals were plated by the reaction. The presence of an alloy layer having the thickness shown in Table 1 was confirmed by microscopic observation.
【００２１】[0021]
【発明の効果】以上述べたように、本発明によって合金
層が形成されず、加工性・耐食性等に優れた溶融アルミ
系めっき鋼板の提供が可能となった。As described above, according to the present invention, it is possible to provide a hot-dip aluminum-plated steel sheet which does not form an alloy layer and is excellent in workability and corrosion resistance.
Claims (2)
ｍ以下で、Ｆｅ，Ａｌ、またはＦｅ，Ａｌと、Ｓｉ，Ｍ
ｎ，Ｍｇの１種または２種以上の酸化物皮膜層を形成
し、その表面にＡｌ、またはＡｌと、Ｓｉ，Ｍｎ，Ｍｇ
の１種または２種以上の合金めっき層を形成したことを
特徴とする優れた加工性・耐食性を有する溶融アルミ系
めっき鋼板。1. The thickness of the plated steel sheet is 2.0 μm on the surface.
Fe, Al or Fe, Al and Si, M at m or less
One or more oxide film layers of n, Mg are formed, and Al or Al and Si, Mn, Mg are formed on the surface of the oxide film layer.
1. A hot-dip aluminum-plated steel sheet having excellent workability and corrosion resistance, characterized in that one or more alloy plating layers are formed.
ｍ以下で、Ｆｅ，Ａｌ、またはＦｅ，Ａｌと、Ｓｉ，Ｍ
ｎ，Ｍｇの１種または２種以上と、さらにＮｉ，Ｃｕ，
Ｓｎの１種または２種以上の酸化物皮膜層を形成し、そ
の表面にＡｌ、またはＡｌと、Ｓｉ，Ｍｎ，Ｍｇの１種
または２種以上の合金めっき層を形成したことを特徴と
する優れた加工性・耐食性を有する溶融アルミ系めっき
鋼板。2. The surface of the plated steel sheet has a thickness of 2.0 μm.
Fe, Al or Fe, Al and Si, M at m or less
One or more of n and Mg, and Ni, Cu,
One or more oxide film layers of Sn are formed, and Al or Al and one or more alloy plating layers of Si, Mn, and Mg are formed on the surface thereof. Hot-dip aluminum plated steel sheet with excellent workability and corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207989A JPH0953187A (en) | 1995-08-15 | 1995-08-15 | Hot-dip aluminized steel sheet having excellent workability and corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7207989A JPH0953187A (en) | 1995-08-15 | 1995-08-15 | Hot-dip aluminized steel sheet having excellent workability and corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0953187A true JPH0953187A (en) | 1997-02-25 |
Family
ID=16548843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7207989A Withdrawn JPH0953187A (en) | 1995-08-15 | 1995-08-15 | Hot-dip aluminized steel sheet having excellent workability and corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0953187A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1826289A1 (en) * | 2006-02-28 | 2007-08-29 | Ocas N.V. | A steel sheet coated with an aluminium based coating, said sheet having high formability |
| JP2009235430A (en) * | 2008-03-26 | 2009-10-15 | Jfe Steel Corp | Galvanized steel sheet and manufacturing method therefor |
| WO2011101158A1 (en) * | 2010-02-19 | 2011-08-25 | Tata Steel Nederland Technology Bv | Strip, sheet or blank suitable for hot forming and process for the production thereof |
| JP2013241645A (en) * | 2012-05-21 | 2013-12-05 | Nippon Steel & Sumitomo Metal Corp | Aluminum-plated steel sheet for fuel tank excellent in corrosion resistance, and method of manufacturing the same |
-
1995
- 1995-08-15 JP JP7207989A patent/JPH0953187A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1826289A1 (en) * | 2006-02-28 | 2007-08-29 | Ocas N.V. | A steel sheet coated with an aluminium based coating, said sheet having high formability |
| WO2007099097A2 (en) * | 2006-02-28 | 2007-09-07 | Ocas N.V. - Onderzoekscentrum Voor Aanwending Van Staal | A steel sheet coated with an aluminium based coating. |
| WO2007099097A3 (en) * | 2006-02-28 | 2008-04-17 | Ocas N V Onderzoekscentrum Voo | A steel sheet coated with an aluminium based coating. |
| JP2009235430A (en) * | 2008-03-26 | 2009-10-15 | Jfe Steel Corp | Galvanized steel sheet and manufacturing method therefor |
| WO2011101158A1 (en) * | 2010-02-19 | 2011-08-25 | Tata Steel Nederland Technology Bv | Strip, sheet or blank suitable for hot forming and process for the production thereof |
| CN102762750A (en) * | 2010-02-19 | 2012-10-31 | 塔塔钢铁荷兰科技有限责任公司 | Strip, sheet or blank suitable for hot forming and process for the production thereof |
| EP2536857A1 (en) | 2010-02-19 | 2012-12-26 | Tata Steel Nederland Technology B.V. | Strip, sheet or blank suitable for hot forming and process for the production thereof |
| JP2013241645A (en) * | 2012-05-21 | 2013-12-05 | Nippon Steel & Sumitomo Metal Corp | Aluminum-plated steel sheet for fuel tank excellent in corrosion resistance, and method of manufacturing the same |
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