JPS63157848A - Manufacture of alloying-galvanized steel sheet excellent in peeling resistance - Google Patents
Manufacture of alloying-galvanized steel sheet excellent in peeling resistanceInfo
- Publication number
- JPS63157848A JPS63157848A JP30391286A JP30391286A JPS63157848A JP S63157848 A JPS63157848 A JP S63157848A JP 30391286 A JP30391286 A JP 30391286A JP 30391286 A JP30391286 A JP 30391286A JP S63157848 A JPS63157848 A JP S63157848A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- alloying
- galvanized steel
- peeling resistance
- plating
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 title abstract description 27
- 239000008397 galvanized steel Substances 0.000 title abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000005246 galvanizing Methods 0.000 claims abstract description 14
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 49
- 238000005275 alloying Methods 0.000 abstract description 14
- 238000011282 treatment Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000007598 dipping method Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 31
- 230000000694 effects Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Coating With Molten Metal (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は耐剥離性、耐食性に優れ、安定した品質を確保
することができる合金化亜鉛めっき鋼板の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing an alloyed galvanized steel sheet that has excellent peeling resistance and corrosion resistance and can ensure stable quality.
鋼板を溶融亜鉛めっきした後加熱処理し、めっき層を亜
鉛−鉄合金化した合金化亜鉛めっき鋼板は建材などを主
たる用途としてきたが、近年自動車の車体や家電製品の
容器に多量に使用されるようになってきた。上記の如き
用途ではとくにプレス成形して使用されることが多いこ
とから従来にも増してめっき層の耐剥離性（耐パウダリ
ング性）に優れた合金化亜鉛めっき鋼板が要求される傾
向にある。Alloyed galvanized steel sheets, which are hot-dipped galvanized steel sheets and then heat-treated to form a zinc-iron alloy, have been used primarily as building materials, but in recent years they have also been used in large quantities for car bodies and containers for home appliances. It's starting to look like this. Since press forming is often used in the above applications, there is a tendency for alloyed galvanized steel sheets with superior peeling resistance (powdering resistance) of the coating layer to be required more than ever. .
（従来の技術）
従来、合金化亜鉛めっき鋼板は溶融Ｚｎ浴に鋼板を浸漬
してめっきした後、溶融Ｚｎめっき層が完全に凝固しな
いうちに加熱処理してＺｎ −Ｆｅの相互拡散によるめ
っき層の合金化を行って製造していた（特開昭５９−２
５９６４号公報、特開昭５８−２１０１５９号公報参照
）。(Prior art) Conventionally, alloyed galvanized steel sheets were plated by immersing the steel sheet in a hot-dip Zn bath, and then heat-treated before the hot-dip Zn plating layer was completely solidified to form a plating layer by interdiffusion of Zn and Fe. (Japanese Patent Application Laid-Open No. 59-2
(See Japanese Patent Laid-Open No. 58-210159).
（発明が解決しようとする問題点）
ところで合金化亜鉛めっき鋼板はその製造過程において
めっき層の合金化が進行しすぎた場合には得られためっ
き層の耐剥離性が著しく劣化し、一方合金化の進行が十
分でない場合にはめっき層表面のＦｅ濃度に斑が生じ、
外観斑を呈するばかりか耐食性、塗装下地処理性、塗装
性が劣化する不利があった。(Problems to be Solved by the Invention) However, in the case of alloyed galvanized steel sheets, if the alloying of the plating layer progresses too much during the manufacturing process, the peeling resistance of the resulting plating layer will deteriorate significantly; If the progress of oxidation is not sufficient, unevenness will occur in the Fe concentration on the surface of the plating layer,
Not only does it cause uneven appearance, but it also has the disadvantage of deteriorating corrosion resistance, surface treatment properties, and paintability.
合金化亜鉛めっき鋼板を製造するに当り、溶融亜鉛めっ
き処理した鋼板を加熱処理すると合金化の進行に伴いめ
っき層の相はη−（η＋ζ）＝（η＋ζ十６１）＝（ζ
＋６１）→δ１−（δ、十ｒ）−ｒと変化していく。普
通、合金化亜鉛めっき鋼板はめっき層の大部分がδ１相
を占るが６１相の他若干のζ相が表面層に残存したり、
薄いｒ相が鋼板−めっき層界面に存在する。このうちζ
相はその組成のＦｅｔ１１度の範囲が狭いためめっき層
をすべてζ相にするのが難かしく、その結果めっき層の
合金化処理が十分でない場合には部分的にζ相が存在す
る状態となりめっき外観に斑が発生する。In manufacturing alloyed galvanized steel sheets, when hot-dip galvanized steel sheets are heat-treated, the phase of the plating layer changes as the alloying progresses: η-(η+ζ)=(η+ζ161)=(ζ
+61)→δ1−(δ, 10r)−r. Normally, the majority of the galvanized steel plate in the galvanized steel sheet is composed of the δ1 phase, but in addition to the 61 phase, some ζ phase may remain in the surface layer.
A thin r phase exists at the steel plate-plating layer interface. Of these, ζ
Since the Fet11 phase range of the composition is narrow, it is difficult to make the entire plating layer into the ζ phase, and as a result, if the plating layer is not sufficiently alloyed, the ζ phase will partially exist and the plating will fail. Spots appear on the appearance.
逆に均一なめっき外観を得るため上記のζ相が残らない
ように合金化処理を十分進行させると鋼板界面にｒ相が
出易く耐剥離性が急激に劣化する。On the other hand, if the alloying treatment is allowed to proceed sufficiently so that the above-mentioned ζ phase does not remain in order to obtain a uniform plating appearance, the r phase is likely to appear at the steel plate interface and the peeling resistance will deteriorate rapidly.
このように合金化亜鉛めっき鋼板はめっき層の合金化の
程度により鋼板の表面性状や耐剥離性等の性質が著しく
変化するので一方の性質の改善を図ろうとすると他方の
性質が劣るという不可避的な欠点を有していた。In this way, the properties of alloyed galvanized steel sheets, such as the surface texture and peeling resistance of the steel sheet, change significantly depending on the degree of alloying of the plating layer, so if you try to improve one property, it is inevitable that the other property will deteriorate. It had some drawbacks.
本発明の目的はめっき層の合金化を十分進行させたとき
にｒ相が生成しても優れた耐剥離性を有する合金化亜鉛
めっき鋼板を容易に製造するための方法を提案するとこ
ろにある。An object of the present invention is to propose a method for easily producing an alloyed galvanized steel sheet that has excellent peeling resistance even when r-phase is generated when the alloying of the plating layer is sufficiently progressed. .
（問題点を解決するための手段）
本発明者らは合金化亜鉛めっき鋼板の耐剥離性が劣化す
る原因は鋼板に隣接するめっき層中にｒ相が形成される
こと、プレス加工によるめっき層の剥離現象はｒ相とδ
１相の界面でめっき層が破壊し該δ１相がめつき層より
脱落することによるものであることを突き止め、耐剥離
性の改善を図るためにはとくにめっき層中にＢを含有さ
せることが極めて有効であることを明らかにし本発明を
完成するに至った。(Means for Solving the Problems) The present inventors have found that the cause of the deterioration of the peeling resistance of alloyed galvanized steel sheets is the formation of an r phase in the plating layer adjacent to the steel sheet, and the fact that the plating layer due to press working The peeling phenomenon is caused by r phase and δ
It was discovered that this is due to the plating layer breaking at the interface of one phase and the δ1 phase falling off from the plating layer, and it was found that it is extremely important to include B in the plating layer in order to improve the peeling resistance. It was revealed that this method is effective, and the present invention was completed.
すなわち本発明は鋼板を、Ａｌ ： ０．０５〜０ 、
２５ｗ ｔ％、Ｂ ： Ｏ，０Ｏ０３〜０．０２ｉｖｔ
％を含有し残部が実質的にＺｎよりなる溶融亜鉛めっき
浴に浸漬通板させめっき処理したのち、加熱処理するこ
とを特徴とする耐剥離性に優れた合金化亜鉛めっき鋼板
の製造方法である。That is, in the present invention, the steel plate has Al: 0.05 to 0,
25wt%, B: O,0O03~0.02ivt
% and the remainder is substantially Zn, the plate is immersed in a hot-dip galvanizing bath containing Zn, the remainder being substantially Zn, and then heat-treated. .
（作 用）
以下本発明で用いる溶融亜鉛めっき浴の組成の限定理由
について説明する。(Function) The reasons for limiting the composition of the hot-dip galvanizing bath used in the present invention will be explained below.
Ａｌ： Ａｌは溶融亜鉛めっき浴の流動性を増大させか
つめっき層のＦｅ −Ｚｎの相互拡散を抑制する。Ａ１
が０．０５ｗｔ％未満では溶融亜鉛めっき浴の流動性が
低くなり鋼板の巾方向、長手方向における均一な目付量
を得ることが困難となりまた溶融亜鉛めっき浴中で鋼板
表面にｒ相が形成され易くなり後述するようにＢを添加
することによる効果が十分に発揮されなくなる。一方Ａ
Ｉが０．２５ｉｖｔ％を超えるとめっき層の合金化が極
めて遅滞し、実質的にインライン処理によって合金化亜
鉛めっき鋼板を製造することが不可能となる。Al: Al increases the fluidity of the hot-dip galvanizing bath and suppresses interdiffusion of Fe-Zn in the plating layer. A1
If it is less than 0.05 wt%, the fluidity of the hot-dip galvanizing bath will be low, making it difficult to obtain a uniform coating weight in the width direction and longitudinal direction of the steel sheet, and r-phase will be formed on the surface of the steel sheet in the hot-dip galvanizing bath. As will be described later, the effect of adding B will not be sufficiently exhibited. On the other hand, A
If I exceeds 0.25 ivt%, alloying of the plating layer will be extremely delayed, making it virtually impossible to produce an alloyed galvanized steel sheet by in-line processing.
よって溶融亜鉛めっき浴の八１の添加量は０．０５〜０
．２５ｗｔ％の範囲に限定した。Therefore, the amount of addition of 81 in the hot dip galvanizing bath is 0.05 to 0.
．． It was limited to a range of 25 wt%.
ＢＩＢは合金化処理後における鋼板のめっき層の耐剥離
性を改善させるために添加する。Ｂの添加量が０．００
０３ｗｔ％未満では耐剥輸性を改善するための十分な効
果が得られず一方、０．０２ｗｔ％を超えて添加しても
その改善効果は飽和するだけであり、しかも白点状の表
面欠陥が生じる。BIB is added to improve the peeling resistance of the plating layer of the steel sheet after alloying treatment. The amount of B added is 0.00
If the amount is less than 0.03 wt%, a sufficient effect to improve the peeling resistance cannot be obtained, while if it is added in excess of 0.02 wt%, the improvement effect will only be saturated, and moreover, white spot-like surface defects will occur. occurs.
従ってＢの添加量は０．０００３ｗｔ％〜０．０２ｗｔ
％の範囲が適当である。本発明においてとくにＢを上記
の範囲内で添加した溶融亜鉛めっき浴中にめっきすべき
鋼板を浸漬通板させ、合金化処理することによってめっ
き層の耐剥離性が改善できる理由は明らかでないが、Ｂ
を添加すると前述したδ１相およびｒ相の変形能が改善
され、その結果加工を受けた際、ｒ相−δ１相の界面の
応力が緩和されて耐剥離性が改善されるものと考えられ
る。Therefore, the amount of B added is 0.0003wt% to 0.02wt
A range of % is appropriate. In the present invention, it is not clear why the peeling resistance of the plating layer can be improved by immersing the steel sheet to be plated in a hot-dip galvanizing bath containing B within the above-mentioned range and alloying it. B
It is thought that the addition of the above-mentioned δ1 phase and r phase improves the deformability, and as a result, when processed, the stress at the r phase-δ1 phase interface is relaxed and the peeling resistance is improved.
なお溶融亜鉛めっき浴中のＡＩの添加量が上記の範囲よ
りも低いと鋼板をめっき浴に浸漬させた際にその表面に
ｒ相が形成され、たとえＢが規定された範囲内にあって
も耐剥離性の改善効果が失われることは先に述べたが、
これはめっき浴中で形成されるｒ相中ではＢの固溶量が
少ないためと考えられる。Note that if the amount of AI added in the hot-dip galvanizing bath is lower than the above range, an r-phase will be formed on the surface of the steel plate when it is immersed in the galvanizing bath, even if B is within the specified range. As mentioned earlier, the effect of improving peeling resistance is lost,
This is considered to be because the amount of solid solution of B in the r phase formed in the plating bath is small.
以上説明したように本発明ではめっきすべき鋼板を、上
記の成分を含有し実質的にＺｎよりなるめっき浴に浸漬
通板させたのち加熱処理するので耐剥離性に優れた合金
化亜鉛めっき鋼板を容易に製造し得る。As explained above, in the present invention, the steel sheet to be plated is immersed in a plating bath containing the above-mentioned components and made essentially of Zn, and then heat-treated, so that an alloyed galvanized steel sheet with excellent peeling resistance can be obtained. can be easily manufactured.
なおめっき浴の温度やその他の処理条件等については通
常の条件でよい。Note that the temperature of the plating bath and other processing conditions may be set to normal conditions.
（実施例）
板厚０．７ｍｍ 、板巾１２５０ｍｍの冷延鋼板を、表
−１に示す組成になる溶融亜鉛めっき浴を備えたガス還
元方式の設備により下記の条件でめっき処理、合金化処
理して合金化亜鉛めっき鋼板を製造した。(Example) A cold-rolled steel plate with a thickness of 0.7 mm and a width of 1250 mm was plated and alloyed under the following conditions using gas reduction equipment equipped with a hot-dip galvanizing bath having the composition shown in Table 1. An alloyed galvanized steel sheet was produced.
製造条件：
（１）焼鈍条件
無酸化炉出口板温：５８０℃
還元炉出口温度＝７８０℃
還元炉雰囲気：１５％■２−Ｎ２
（２） めっき条件
めっき浴温度：４７０℃
目付量：６０ｇ／ｍ”（片面当り）
（３）めっき層の合金化処理温度：５５０〜６５０℃（
４）調質圧延：圧下率０．８％
そして得られた製品につき次の各項について調査した。Manufacturing conditions: (1) Annealing conditions Non-oxidation furnace outlet plate temperature: 580℃ Reduction furnace outlet temperature = 780℃ Reduction furnace atmosphere: 15%■2-N2 (2) Plating conditions Plating bath temperature: 470℃ Fabric weight: 60g/ m” (per one side) (3) Alloying treatment temperature of plating layer: 550-650℃ (
4) Skin pass rolling: Reduction rate of 0.8% The following items were investigated for the obtained product.
（１１めっき層の合金化度測定
ａ） めっき層中のＦｅ含有量の測定（化学分析）ｂ）
構成相の同定（Ｘ線回折）
（２） めっき外観（目視検査）
（３）めっき層の耐剥離性（耐パウダリング）試験：鋼
板を１を曲げ（１８０°）し、曲げ内側において剥離し
ためっき量を蛍光Ｘ線分析により測定
上記の調査結果を表−１に併せて示す。(Measurement of alloying degree of plating layer 11 a) Measurement of Fe content in the plating layer (chemical analysis) b)
Identification of constituent phases (X-ray diffraction) (2) Appearance of plating (visual inspection) (3) Peeling resistance (powdering resistance) test of plating layer: Steel plate 1 was bent (180°) and peeled on the inside of the bend. The amount of plating was measured by fluorescent X-ray analysis. The above investigation results are also shown in Table 1.
試料１１ｉ１１は従来より製造さている耐剥離性の良好
な合金化亜鉛めっき鋼板である。合金化めっき層は一般
に表面外観に問題のないδ１相のみからなるが、耐剥離
性における脱落Ｚｎ量は１０ｍｇであった。次に試料Ｎ
１１２はめっき層の合金化を十分進行させた場合の鋼板
である。めっき外観には問題はないがｒ相が生成した状
態では耐剥離性が著しく劣化した。Sample 11i11 is a conventionally manufactured alloyed galvanized steel sheet with good peeling resistance. The alloyed plating layer generally consists of only the δ1 phase with no problem in surface appearance, but the amount of Zn dropped in terms of peeling resistance was 10 mg. Next, sample N
112 is a steel plate in which the plating layer is sufficiently alloyed. Although there was no problem with the appearance of the plating, the peeling resistance was significantly deteriorated in the state in which the r-phase was formed.
次に試料阻３、阻４はＢを添加した溶融亜鉛めっき浴を
適用して製造した合金化亜鉛めっき鋼板である。１ｌｈ
３についてはＡＩの添加量が少ないためにＢの添加効果
がなくてｒ相が生成した状態では耐剥離性が悪く、一方
ＡＩの添加量が多い阻４については鋼板を６５０℃で処
理してもめっき層の合金化が困難でη相が残った。Samples No. 3 and No. 4 are alloyed galvanized steel sheets manufactured using a hot-dip galvanizing bath containing B. 1lh
Regarding No. 3, the peeling resistance was poor in the state in which the addition of B had no effect due to the small amount of AI added and the r phase was formed, while for No. 4, where the amount of AI added was large, the steel plate was treated at 650 ° C. It was also difficult to alloy the plating layer, and the η phase remained.
試料階５〜１４（適合例）は本発明に従う合金化亜鉛め
っき鋼板である。とくにｌ１ｈ７、ｌ１ｈ９．１ｌｈｌ
ｌについてはめっき層の合金化を十分進行させない状態
、すなわち合金化めっき層の相構成にζ相が含まれてい
る状態で耐剥離性を調べた結果である。Samples 5 to 14 (suitable examples) are alloyed galvanized steel sheets according to the present invention. Especially l1h7, l1h9.1lhl
Regarding l, this is the result of examining the peeling resistance in a state in which the alloying of the plating layer did not progress sufficiently, that is, in a state in which the phase composition of the alloyed plating layer contained the ζ phase.
めっき外観は一部白色はあるものの耐剥離性は良好であ
った。また隘５．１１ｈ１２は合金化めっき層の相構成
がδ１相、ｌ１ｈ６、阻８、隘１０、隘１３、隘１４に
ついては（δ１＋Ｆ）相の状態であり、何れもめっき外
観、耐剥離性ともに良好であることが確かめられた。Although some parts of the plating had a white appearance, the peeling resistance was good. In addition, the phase structure of the alloyed plating layer for No. 5.11h12 is the δ1 phase, and for I1h6, No. 8, No. 10, No. 13, and No. 14, the phase composition is the (δ1 + F) phase, and both the plating appearance and peeling resistance are It was confirmed that it was in good condition.
次に試料ｍ１５．１６ （比較例）はＢを多量に添加し
ためっき浴を適用して製造した場合の合金化亜鉛めっき
鋼板である。耐剥離性に対しては十分な効果を示すこと
は明らかであるが、とくに合金化を十分に進行させたｌ
１ｈ１６では白色の斑点が生じた。Next, sample m15.16 (comparative example) is an alloyed galvanized steel sheet manufactured using a plating bath containing a large amount of B. It is clear that it has a sufficient effect on peeling resistance, but it is especially effective when alloying is sufficiently advanced.
At 1h16, white spots appeared.
（発明の効果）
本発明によれば合金化亜鉛めっき鋼板を製造するに際し
てめっき外観が良好となるようにめっき層の合金化を十
分進行させたとしてもｒ相の生成に起因した耐剥離性の
劣化が全くなくプレス成形に適した合金化亜鉛めっき鋼
板を安定して生産できるようになった。(Effects of the Invention) According to the present invention, when producing an alloyed galvanized steel sheet, even if the alloying of the plating layer is sufficiently advanced so that the plating appearance is good, the peeling resistance due to the formation of the r phase is It has become possible to stably produce alloyed galvanized steel sheets that exhibit no deterioration and are suitable for press forming.
Claims (1)
．０００３〜０．０２ｗｔ％、を含有し残部が実質的に
Ｚｎよりなる溶融亜鉛めっき浴に浸漬通板させてめっき
処理したのち、加熱処理することを特徴とする耐剥離性
に優れた合金化亜鉛めっき鋼板の製造方法。1. Steel plate, Al: 0.05 to 0.25 wt%, B: 0
．． Alloyed zinc with excellent peeling resistance characterized by being plated by immersion passing through a hot-dip galvanizing bath containing Zn. Method of manufacturing plated steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30391286A JPS63157848A (en) | 1986-12-22 | 1986-12-22 | Manufacture of alloying-galvanized steel sheet excellent in peeling resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30391286A JPS63157848A (en) | 1986-12-22 | 1986-12-22 | Manufacture of alloying-galvanized steel sheet excellent in peeling resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63157848A true JPS63157848A (en) | 1988-06-30 |
Family
ID=17926763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30391286A Pending JPS63157848A (en) | 1986-12-22 | 1986-12-22 | Manufacture of alloying-galvanized steel sheet excellent in peeling resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63157848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04371558A (en) * | 1991-06-20 | 1992-12-24 | Nippon Steel Corp | Production of galvannealed steel sheet having excellent powdering resistance |
| JP2010189725A (en) * | 2009-02-19 | 2010-09-02 | Jfe Steel Corp | Hot dip galvanized steel sheet for adhesion-bonding which is excellent in impact-resistant adhesion |
-
1986
- 1986-12-22 JP JP30391286A patent/JPS63157848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04371558A (en) * | 1991-06-20 | 1992-12-24 | Nippon Steel Corp | Production of galvannealed steel sheet having excellent powdering resistance |
| JP2010189725A (en) * | 2009-02-19 | 2010-09-02 | Jfe Steel Corp | Hot dip galvanized steel sheet for adhesion-bonding which is excellent in impact-resistant adhesion |
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