JP2848250B2 - Hot-dip galvanized steel sheet - Google Patents
Hot-dip galvanized steel sheetInfo
- Publication number
- JP2848250B2 JP2848250B2 JP20703694A JP20703694A JP2848250B2 JP 2848250 B2 JP2848250 B2 JP 2848250B2 JP 20703694 A JP20703694 A JP 20703694A JP 20703694 A JP20703694 A JP 20703694A JP 2848250 B2 JP2848250 B2 JP 2848250B2
- Authority
- JP
- Japan
- Prior art keywords
- spangle
- steel sheet
- hot
- galvanized steel
- dip galvanized
- 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.)
- Expired - Fee Related
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- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐経時剥離性および加
工後耐食性に優れるミニマムスパングルあるいはゼロス
パングルならびにレギュラースパングル溶融亜鉛めっき
鋼板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a minimum spangle or zero spangle and a regular spangle hot-dip galvanized steel sheet having excellent peel resistance with time and corrosion resistance after processing.
【０００２】[0002]
【従来の技術】今日、溶融亜鉛めっき鋼板は自動車、家
電、建材等に多量に使用されており、その適用部位も広
範囲に広がっている。このため、形状についても複雑多
様化してきており、さらなる高品質化が要求されてい
る。2. Description of the Related Art Today, hot-dip galvanized steel sheets are used in large quantities in automobiles, home appliances, building materials, and the like, and their application sites are widely spread. For this reason, the shapes have also been complicated and diversified, and higher quality is required.
【０００３】従来、一般に、鉄鋼材料の溶融亜鉛めっき
浴組成は、0.2 wt％程度のAlとスパングル開華元素とし
て0.1 〜0.2 wt％のPbを複合添加したものが使用されて
いる。しかしながら、このようなめっき浴組成ではめっ
き層の剥離の問題が発生しており、特に高温多湿環境下
あるいは屋内で長期間保管された場合、その発生頻度が
顕著になる。[0003] Conventionally, a hot dip galvanizing bath composition of a steel material generally uses a mixture of about 0.2 wt% of Al and 0.1 to 0.2 wt% of Pb as a spangle sublimation element. However, such a plating bath composition causes a problem of peeling of a plating layer, and the frequency of occurrence thereof becomes remarkable particularly when the plating bath is stored in a high-temperature and high-humidity environment or indoors for a long time.
【０００４】このようなめっき層の経時剥離はゼロスパ
ングル材で発生し易く、浴中AlおよびPb濃度が所定量以
上になると顕著化するため、原則的には加工密着性に影
響するAl濃度は別にして、Pb濃度を極微量に低下するこ
とにより解決できる。しかしながら、それではスパング
ル材の製造ができず、スパングル材の需要がある限り、
Pb等のスパングル形成元素が必要であり根本的問題解決
にならない。この経時剥離は粒界腐食が主原因でありPb
等の固溶度の小さい低融点金属が共存すると、例えばPb
が最終凝固するが、その時の凝固収縮による空隙の発生
が腐食溶質の透過を容易にすること、およびPbの貴な特
性が周囲のα相もしくはη相の腐食を促進すると言われ
ている。[0004] Such peeling of the plating layer over time is apt to occur in a zero spangle material and becomes remarkable when the Al and Pb concentrations in the bath exceed a predetermined amount. Alternatively, the problem can be solved by reducing the Pb concentration to a very small amount. However, it cannot produce spangled wood, and as long as there is demand for spangled wood,
A spangle-forming element such as Pb is required and does not solve the fundamental problem. This delamination over time is mainly caused by intergranular corrosion, and Pb
When low-melting metals with low solid solubility coexist, for example, Pb
Is finally solidified, and it is said that the formation of voids due to solidification shrinkage at that time facilitates the penetration of corrosive solutes, and that the noble properties of Pb promote the corrosion of the surrounding α phase or η phase.
【０００５】ゼロスパングル材ではPbが共存すると最終
凝固過程でかなりの量のPbが素地近傍で凝固し、その近
傍に空隙を残す可能性がある。これが、高温多湿下で時
効されるとα−Alを分離するために、その体積変動でク
ラック等を生じ、水分、酸素の透過を容易にし腐食剥離
に至るものと考えている。In the case of zero spangle material, if Pb coexists, a considerable amount of Pb may solidify in the final solidification process near the base material, leaving a void in the vicinity thereof. It is considered that, when this is aged under high temperature and high humidity, α-Al is separated to cause cracks or the like due to its volume fluctuation, thereby facilitating permeation of moisture and oxygen and leading to corrosion delamination.
【０００６】この対策の一つとして例えば、特開昭53−
128539号公報では、めっき被覆層の組成をAl：0.2 〜17
wt％、Sb：0.02〜0.15wt％、Pb：≦0.02wt％とすること
を提案している。Sbは経時剥離を起こさない添加元素と
してよく知られており (材料とプロセスvol.3(1990)-65
5)、Pbと置き換えることにより、経時剥離は抑制でき
る。しかし、Pb、Sb等のスパングル開華元素をZn浴中に
添加すると皮膜の加工性が低下してしまう。溶融亜鉛め
っき鋼板にも成形性が厳しく求められるようになってき
ている現状において満足のいく性能が得られていない。As one of the countermeasures, see, for example,
In Japanese Patent No. 128539, the composition of the plating coating layer is set to Al: 0.2 to 17
wt%, Sb: 0.02-0.15 wt%, and Pb: ≦ 0.02 wt%. Sb is well known as an additive element that does not cause exfoliation over time (Materials and Process vol.3 (1990) -65
5) By replacing with Pb, peeling over time can be suppressed. However, when spangle-subliming elements such as Pb and Sb are added to the Zn bath, the workability of the film is reduced. Satisfactory performance has not been obtained in the current situation where formability is being strictly required for hot-dip galvanized steel sheets.
【０００７】[0007]
【発明が解決しようとする課題】本発明の第一の目的
は、耐経時剥離性および加工後耐食性に優れたミニマイ
ズド材、ゼロスパングル材、レキュラースパングル材を
含む溶融亜鉛めっき鋼板を提供することである。SUMMARY OF THE INVENTION It is a first object of the present invention to provide a galvanized steel sheet containing a minimized material, a zero spangle material, and a recurring spangle material, which is excellent in aging resistance and corrosion resistance after processing. It is.
【０００８】本発明の第二の目的は、加工後耐食性につ
いては耐食性の低下が母材鋼板の変形に追随できずに形
成されるめっき皮膜のクラックに起因していることか
ら、成形加工時にクラックが形成されにくいミニマイズ
ド材、ゼロスパングル材およびレギュラースパングル材
を含む溶融亜鉛めっき鋼板を提供することである。[0008] A second object of the present invention is to reduce the corrosion resistance after processing because the deterioration of the corrosion resistance is caused by the cracks in the plating film formed without following the deformation of the base steel sheet. It is an object of the present invention to provide a hot-dip galvanized steel sheet including a minimized material, a zero spangle material, and a regular spangle material, which is difficult to form.
【０００９】[0009]
【課題を解決するための手段】ミニマイズドあるいはゼ
ロスパングル材の経時剥離は、Sbをスパングル開華元素
として添加するために防止できる。しかし、SbはPbにく
らべてスパングル形成効果が大きいため、ゼロスパング
ル化を達成するためには最大添加量を制限する必要があ
る。SUMMARY OF THE INVENTION Temporal peeling of a minimized or zero spangle material can be prevented by adding Sb as a spangle sublimation element. However, since Sb has a greater spangle forming effect than Pb, it is necessary to limit the maximum addition amount in order to achieve zero spangle formation.
【００１０】さらに、加工時に皮膜中に形成されるクラ
ックについてはPb、Sb等の元素がZn浴中に添加されると
皮膜の硬度上昇や基盤面に対するZnの(111) 面の増加に
よりクラックが形成され易くなり、スパングル径を小さ
くすることによって改善傾向にあるものの厳しい加工部
には適用不可である。Furthermore, cracks formed in the coating during processing are caused by an increase in hardness of the coating and an increase in the (111) plane of Zn relative to the base surface when elements such as Pb and Sb are added to the Zn bath. Although it tends to be formed and tends to be improved by reducing the spangle diameter, it cannot be applied to severely processed parts.
【００１１】そこで、鋭意検討した結果、Zn浴中にNiお
よび／またはCrを所定量複合添加することにより、クラ
ックの形成が抑制され加工部の耐食性も大幅に向上する
ことが認められた。Therefore, as a result of intensive studies, it was recognized that the formation of cracks was suppressed and the corrosion resistance of the processed portion was significantly improved by adding a predetermined amount of Ni and / or Cr to the Zn bath.
【００１２】この改善機構については明確なことは判っ
ていないが、皮膜中にNi、Crの１種以上が共存するとZn
の(111) 面が減少することによって皮膜内のクラックが
低減すること、さらにはクラック部で安定な腐食生成物
が形成されることによるものと推定している。Although the mechanism of this improvement is not clear, it is not possible to use Zn if at least one of Ni and Cr coexists in the film.
It is presumed that the decrease in the (111) plane reduces the number of cracks in the coating, and that stable corrosion products are formed at the cracks.
【００１３】ここに、本発明は、Al：0.10〜0.30wt％、
Sb：0.003 〜0.10wt％、NiおよびCrの１種あるいは２種
を合計で0.001 〜2.0 wt％含有し、Feを除くPb、Cd、あ
るいはSnを含む不可避不純物の合計が0.03wt％未満であ
って、残部がZnよりなるめっき被覆層を有することを特
徴とするミニマイズド材あるいはゼロスパングル材なら
びにレギュラースパングル材の製造が可能な溶融亜鉛め
っき鋼板である。Here, the present invention relates to Al: 0.10 to 0.30 wt%,
Sb: 0.003 to 0.10 wt%, one or two of Ni and Cr are contained in a total of 0.001 to 2.0 wt%, and the total of inevitable impurities including Pb, Cd, or Sn excluding Fe is less than 0.03 wt%. If the minimized material or zero spangle material is characterized in that the remainder has a plating coating layer of Zn
It is a hot-dip galvanized steel sheet that can produce regular spangle materials .
【００１４】[0014]
【作用】以下、本発明の作用について、上述のようにめ
っき層組成を限定した理由とともに詳細に説明する。The operation of the present invention will be described in detail below, together with the reasons for limiting the composition of the plating layer as described above.
【００１５】Al：0.10〜0.30wt％ Zn浴中のAl添加は一般に鉄鋼材料を浸漬めっきした時に
鋼とめっき界面に形成される脆いFe−Zn合金層を抑制す
るために添加されるが、このAl濃度が0.10wt％未満では
このFe−Zn合金層の形成を抑制できず、そのめっき皮膜
の一時密着性を十分に確保できない。また、0.30wt％を
越えてAl濃度を増加させても一時密着の改善効果は飽和
するためにZn浴中Al濃度は0.10〜0.30wt％に限定する。
もちろん、このめっき浴を使用して得られる本発明にか
かるめっき鋼板のめっき層のAl含有量も同様に 0.10 〜
0.30wt％となる。Al: 0.10 to 0.30 wt% Al addition in a Zn bath is generally added to suppress a brittle Fe-Zn alloy layer formed at a steel-plating interface when a steel material is immersed and plated. If the Al concentration is less than 0.10 wt%, the formation of this Fe-Zn alloy layer cannot be suppressed, and the temporary adhesion of the plating film cannot be sufficiently ensured. Further, even if the Al concentration is increased beyond 0.30 wt%, the effect of improving the temporary adhesion is saturated, so the Al concentration in the Zn bath is limited to 0.10 to 0.30 wt%.
Of course, the Al content of the plating layer of the plated steel sheet according to the present invention obtained using this plating bath is also 0.10 to 0.10.
0.30 wt%.
【００１６】Sb：0.003 〜0.10wt％ Sbはスパングル開華元素として添加しているが、0.003
wt％未満ではスパングルが十分に形成されない。0.10wt
％を越えると、この浴で同時にゼロスパングル材を製造
することが困難となるためSb添加量は0.003 〜0.10wt％
に限定する。Sb: 0.003 to 0.10 wt% Sb is added as a spangle sublimation element.
If it is less than wt%, spangles will not be formed sufficiently. 0.10wt
%, It is difficult to simultaneously produce zero spangle material in this bath, so the amount of Sb added is 0.003 to 0.10 wt%.
Limited to.
【００１７】この時、Pb、CdおよびSn等の不可避不純物
元素は合計で0.03wt％未満に限定する理由は、何れの元
素も経時剥離性に対して悪影響を及ぼす元素であり、0.
01wt％以上になると耐経時剥離性が低下するためであ
る。At this time, the reason that the inevitable impurity elements such as Pb, Cd and Sn are limited to less than 0.03 wt% in total is that any of these elements has an adverse effect on the separability with time.
This is because when the content exceeds 01 wt%, the peeling resistance with time decreases.
【００１８】Ni、Crの１種あるいは２種：0.001 〜2.0
wt％ 加工後耐食性の劣化はめっき層中にNi、Crの単独あるい
はこの両者を添加すると改善できるめっき層中濃度が0.
001 wt％未満では改善効果が不十分で、2.0 wt％を越え
ると改善効果が飽和するとともにコストアップに連がる
ため、めっき層濃度は0.001 〜2.0 wt％に限定する。好
ましくは、0.01〜1.0 wt％である。One or two of Ni and Cr: 0.001 to 2.0
wt% Deterioration of corrosion resistance after processing can be improved by adding Ni or Cr alone or both in the plating layer.
If the content is less than 001 wt%, the improvement effect is insufficient, and if the content exceeds 2.0 wt%, the improvement effect is saturated and the cost increases, so the plating layer concentration is limited to 0.001 to 2.0 wt%. Preferably, it is 0.01 to 1.0 wt%.
【００１９】このようにしてめっき層の組成が調整され
た溶融亜鉛めっき鋼板は、目的に応じてレギュラースパ
ングル材、およびゼロスパングル材もしくはミニマイズ
ドスパングル材として利用されるが、それにはめっき終
了後次のような工程を経て処理を施すのである。The hot-dip galvanized steel sheet having the composition of the plating layer adjusted as described above is used as a regular spangle material, a zero spangle material or a minimized spangle material according to the purpose. The process is performed through the following steps.
【００２０】本発明にかかるめっき鋼板の製造に当たっ
てはまず、めっきすべき鋼板を用意し、次いでこれをA
l：0.1 〜0.3 wt％、Sb：0.003 〜0.1 wt％、NiおよびC
rの１種あるいは２種を合計で0.001 〜2.0 wt％含有
し、Feを除くPb、Cd、あるいはSnを含む不可避不純物の
合計が0.03wt％未満であって、残部がZnよりなる溶融Zn
浴に浸漬する。In the production of a plated steel sheet according to the present invention, first, a steel sheet to be plated is prepared, and
l: 0.1-0.3 wt%, Sb: 0.003-0.1 wt%, Ni and C
one or two kinds of r in total of 0.001 to 2.0 wt%, and the total of unavoidable impurities including Pb, Cd, or Sn excluding Fe is less than 0.03 wt%, and the balance is Zn.
Immerse in the bath.
【００２１】上記めっき組成浴を用いた溶融Znめっき鋼
板の製造においては、450 〜480 ℃のZn浴に浸漬後、所
定量のめっき膜厚を得るためガスワイピングを施し、レ
ギュラースパングル材を製造する場合、鋼板の冷却速度
を15℃/s以下あるいは保温、加温しながら所定のスパン
グル粒径を形成させる。In the production of a hot-dip galvanized steel sheet using the above-mentioned plating composition bath, after immersion in a Zn bath at 450 to 480 ° C., gas wiping is performed to obtain a predetermined plating film thickness to produce a regular spangle material. In this case, a predetermined spangle particle size is formed while keeping the cooling rate of the steel sheet at 15 ° C./s or less, or keeping and heating.
【００２２】また、ゼロスパングル材あるいはミニマイ
ズドスパングル材を形成する場合、既に公知技術である
ミスト冷却や燐酸塩水溶液、亜鉛粉吹付けを適用し製造
する。よって、本発明にあってはそのようにして製造さ
れためっき鋼板をも含めて溶融亜鉛めっき鋼板というの
であって、溶融亜鉛めっき後の処理については特に制限
されない。When a zero spangle material or a minimized spangle material is formed, it is manufactured by applying mist cooling, a phosphate aqueous solution, and zinc powder spraying, which are already known in the art. Therefore, in the present invention, the hot-dip galvanized steel sheet includes the coated steel sheet manufactured as described above, and the treatment after the hot-dip galvanizing is not particularly limited.
【００２３】[0023]
【実施例】次に、実施例によって本発明をさらに説明す
るが、本例では0.8 mmの冷間圧延後の未焼鈍冷延鋼板を
めっき母材の供試材とした。EXAMPLES Next, the present invention will be further described by way of examples. In this example, an unannealed cold-rolled steel sheet after cold rolling of 0.8 mm was used as a test material for a plating base material.
【００２４】この冷却鋼板を100 ×250 mmに裁断後、前
処理として溶剤脱脂、水洗、乾燥を行った。前処理を行
った鋼板は溶融亜鉛めっきシミュレーターを用いて、50
0ppmO2 ＋N2の雰囲気中で600 ℃×10秒の加熱処理を行
った後、25％H2＋N2雰囲気中で750 ℃×60秒の還元焼鈍
を行い、460 ℃に保持し、各種添加元素量を変化させた
基本めっき浴組成がAl：0.1 〜0.3 wt％、Sb：0.003 〜
0.1 wt％、NiおよびCrの１種あるいは２種を合計で0.00
1 〜2.0 wt％含有し、Feを除くPb、Cd、あるいはSnを含
む不可避不純物の合計が0.03wt％未満であって、残部が
ZnよりなるZn浴に浸漬しめっきを行った。After this cooled steel sheet was cut into 100 × 250 mm, solvent degreasing, water washing and drying were performed as pretreatments. The pre-treated steel sheet was subjected to 50
After performing heat treatment at 600 ° C x 10 seconds in an atmosphere of 0 ppm O 2 + N 2 , reduction annealing at 750 ° C x 60 seconds in a 25% H 2 + N 2 atmosphere, holding at 460 ° C, The basic plating bath composition with different amounts is Al: 0.1 to 0.3 wt%, Sb: 0.003 to
0.1 wt%, one or two of Ni and Cr in total 0.00
1 to 2.0 wt%, the total of unavoidable impurities including Pb, Cd, or Sn excluding Fe is less than 0.03 wt%, and the balance is
It was immersed in a Zn bath made of Zn and plated.
【００２５】付着量はワイピング処理によって100 g/m2
に調整した。めっき後の冷却手段は炉内徐冷およびミス
ト冷却でありミスト冷却についてはミスト量を変化させ
て調整し、レギュラースパングル材、ミニマイズドスパ
ングル材 (ゼロスパングル材) を作成した。The adhesion amount is 100 g / m 2 by the wiping process.
Was adjusted. The cooling means after the plating was slow cooling in the furnace and mist cooling. The mist cooling was adjusted by changing the amount of mist, and regular spangled material and minimized spangled material (zero spangled material) were prepared.
【００２６】このようにして得られたレギュラースパン
グル材およびミニマイズドスパングル材について、それ
ぞれ次のように評価試験を行った。それらの結果はめっ
き層の組成とともに表１、２にまとめて示す。The regular spangle material and the minimized spangle material thus obtained were evaluated as follows. Tables 1 and 2 show the results together with the composition of the plating layer.
【００２７】１) 一次密着性 このように作成した溶融Znめっき鋼板はボールインパク
ト試験後、めっき皮膜のテープ剥離面積で評価を行っ
た。 ポンチ径／ダイス径：0.5 ／１インチ 荷重： 1 kg重 高さ： 50 cm テープ剥離後の目視評価 ◎：皮膜剥離なし ○：皮膜剥離がわずかに認められる △：皮膜剥離が薄く全面に認められる ×：皮膜剥離が全面に認められる。1) Primary Adhesion The hot-dip Zn-coated steel sheet prepared as described above was evaluated by a tape peeling area of a plating film after a ball impact test. Punch diameter / Die diameter: 0.5 / 1 inch Load: 1 kg weight Height: 50 cm Visual evaluation after tape peeling ◎: No film peeling ○: Slight film peeling is observed △: Film peeling is thin and visible over the entire surface ×: Peeling of the film is observed on the entire surface.
【００２８】２) 加工後耐食性 25mm×100 mmに切断した試料に10Ｒの曲げ加工を施し、
下記のサイクル試験後、曲げ部の赤錆発生状況を目視で
評価を行った。 １サイクル 塩水噴霧 (５％NaCl、35℃×４ｈｒｓ） ↓ 乾 燥 (60℃×２hrs) ↓ 湿 潤 (相対湿度：95％、50℃×２hrs) 50サイクル後の目視評価 ◎：全く赤錆が認められない ○：エッジ部わずかに赤錆が認められる △：曲げ部幅方向線状に赤錆が認められる ×：曲げ部全面に赤錆が認められる。2) Corrosion resistance after processing A sample cut to 25 mm x 100 mm is subjected to 10R bending,
After the following cycle test, the occurrence of red rust at the bent portion was visually evaluated. 1 cycle salt spray (5% NaCl, 35 ℃ × 4hrs) ↓ Drying (60 ℃ × 2hrs) ↓ Moisture (relative humidity: 95%, 50 ℃ × 2hrs) Visual evaluation after 50 cycles ◎: No red rust observed Not possible ○: Slight red rust is observed at the edge portion △: Red rust is observed linearly in the width direction of the bent portion ×: Red rust is observed over the entire bent portion.
【００２９】３) 経時剥離性 25mm×100 mmに切断した試料を温度80℃、相対温度95
％、240 hrの腐食試験を行ったのち、２ｔ折曲げ加工部
のテープ剥離の目視で評価を行った。 ◎：全く剥離が認められない ○：エッジ部わずかに剥離が認められる △：曲げ部幅方向線状に隔離が認められる ×：曲げ部全面に剥離が認められる。3) Peeling property over time A sample cut into a size of 25 mm × 100 mm was subjected to a temperature of 80 ° C. and a relative temperature of 95.
%, And a corrosion test of 240 hr was performed, and the tape was peeled off from the 2t bent portion to evaluate visually. ：: No peeling was observed at all. ：: Slight peeling was observed at the edge portion. △: Separation was observed in a linear shape in the width direction of the bent portion.
【００３０】４) スパングル評価 炉内徐冷の場合 ○：粒径10mm以上のスパングルが形成される ×：粒径10mm以上のスパングルが形成されない ミスト急冷の場合 ○：粒径２mm未満のミニマムあるいはゼロスパングルが
形成される ×：粒径２mm未満のミニマムあるいはゼロスパングルが
形成されない。4) Evaluation of spangles In the case of slow cooling in the furnace ○: Spangles with a particle size of 10 mm or more are formed ×: No spangles with a particle size of 10 mm or more are formed In case of mist rapid cooling ○: Minimum or zero with a particle size of less than 2 mm Spangles are formed. ×: Minimum or zero spangles having a particle size of less than 2 mm are not formed.
【００３１】[0031]
【表１】 [Table 1]
【００３２】[0032]
【表２】 [Table 2]
【００３３】[0033]
【発明の効果】本発明によって、ミニマイズドおよびゼ
ロスパングル材とレギュラースパングル材を併用して製
造する場合にあっても、耐経時剥離性および加工後耐食
性の両性能に優れるミニマイズドスパングル材、ゼロス
パングル材およびレギュラースパングル材をそれぞれ製
造することが可能となる。According to the present invention, even when a minimized and zero spangled material is used in combination with a regular spangled material, the minimized spangled material and the zero spangled material exhibiting both excellent anti-peeling property and corrosion resistance after processing. Material and regular spangle material can be manufactured.
Claims (1)
wt％、NiおよびCrの１種あるいは２種を合計で0.001 〜
2.0 wt％含有し、Feを除くPb、Cd、あるいはSnを含む不
可避不純物の合計が0.03wt％未満であって、残部がZnよ
りなるめっき被覆層を有することを特徴とするミニマイ
ズド材あるいはゼロスパングル材ならびにレギュラース
パングル材の製造が可能な溶融亜鉛めっき鋼板。1. Al: 0.10 to 0.30 wt%, Sb: 0.003 to 0.10
wt%, one or two of Ni and Cr in total 0.001 to
2. A minimized material or zero spangle, characterized in that the total amount of unavoidable impurities including Pb, Cd, or Sn excluding Fe is less than 0.03% by weight, and the balance has a plating coating layer composed of Zn. Hot-dip galvanized steel sheet capable of producing materials and regular spangle materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20703694A JP2848250B2 (en) | 1994-08-31 | 1994-08-31 | Hot-dip galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20703694A JP2848250B2 (en) | 1994-08-31 | 1994-08-31 | Hot-dip galvanized steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0874018A JPH0874018A (en) | 1996-03-19 |
| JP2848250B2 true JP2848250B2 (en) | 1999-01-20 |
Family
ID=16533147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20703694A Expired - Fee Related JP2848250B2 (en) | 1994-08-31 | 1994-08-31 | Hot-dip galvanized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2848250B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100812020B1 (en) * | 2001-12-14 | 2008-03-10 | 주식회사 포스코 | Method for manufacturing continuous galvanized steel iron |
| KR20040003314A (en) * | 2002-07-02 | 2004-01-13 | 주식회사 포스코 | Manufacturing method for galvanized steel sheet |
| EP1831419B1 (en) * | 2004-12-28 | 2012-06-13 | Posco | Galvanized steel-sheet without spangle, manufacturing method thereof and device used therefor |
| JP4778083B2 (en) * | 2008-08-21 | 2011-09-21 | 川田工業株式会社 | Hot-dip galvanized material with excellent thermal spray coating |
| JP5879020B2 (en) * | 2009-07-21 | 2016-03-08 | Ｊｆｅスチール株式会社 | Hot-dip galvanized steel pipe |
| CN103088278B (en) * | 2012-11-22 | 2016-01-27 | 天长市飞龙金属制品有限公司 | The manufacture method of lead-free coated mesh in a kind of coating |
| JP6509160B2 (en) * | 2016-06-01 | 2019-05-08 | Ｊｆｅ鋼板株式会社 | Molten Al-Zn based plated steel sheet and manufacturing method thereof |
-
1994
- 1994-08-31 JP JP20703694A patent/JP2848250B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0874018A (en) | 1996-03-19 |
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