JPH07197226A - Zn-ni alloy plated steel sheet excellent in press formability and powdering resistance - Google Patents
Zn-ni alloy plated steel sheet excellent in press formability and powdering resistanceInfo
- Publication number
- JPH07197226A JPH07197226A JP29194A JP29194A JPH07197226A JP H07197226 A JPH07197226 A JP H07197226A JP 29194 A JP29194 A JP 29194A JP 29194 A JP29194 A JP 29194A JP H07197226 A JPH07197226 A JP H07197226A
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- Prior art keywords
- steel sheet
- content
- plating
- plated steel
- alloy
- Prior art date
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- Coating With Molten Metal (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は優れたプレス成形性およ
び耐パウダリング性を有し、自動車や家電製品における
難成形品に用いられる表面処理鋼板として好適なZn−
Ni系合金めっき鋼板に関するものである。BACKGROUND OF THE INVENTION The present invention has excellent press formability and powdering resistance, and is suitable for use as a surface-treated steel sheet for difficult-to-form products such as automobiles and home appliances.
The present invention relates to a Ni-based alloy plated steel sheet.
【0002】[0002]
【従来の技術】寒冷地帯における冬期の道路凍結防止用
の散布岩塩による自動車の車体腐食対策として、多種多
様な表面処理鋼板が使用されている。最も単純な表面処
理鋼板としては亜鉛めっき鋼板が挙げられるが、自動車
用途では高い耐食性が要求されるため、めっき量を厚く
する必要があり、溶接性や加工性など車体組立段階での
問題を生じる。そこでめっき量が薄くても高い耐食性を
有する、多くの合金めっきが提案され、その中でもF
e、Co、Niといった鉄族金属を合金成分として含有
するZn系合金めっきは、耐食性のみならず溶接性や加
工性が良好なことが認められ、広く実用されている。2. Description of the Related Art A wide variety of surface-treated steel sheets are used as measures against corrosion of automobile bodies by sprayed rock salt for preventing road freezing in winter in cold regions. Galvanized steel sheets are listed as the simplest surface-treated steel sheets, but high corrosion resistance is required for automotive applications, so it is necessary to increase the amount of plating, which causes problems such as weldability and workability at the vehicle body assembly stage. . Therefore, many alloy platings have been proposed that have high corrosion resistance even if the plating amount is thin.
Zn-based alloy plating containing an iron group metal such as e, Co, or Ni as an alloy component has been found to have good corrosion resistance as well as weldability and workability, and is widely used.
【0003】一方、自動車や家電製品では、ニーズの多
様化に伴い、より高度で多彩な成形性が要求されるよう
になり、成分設計や圧延、焼鈍条件を駆使した材質の造
り込み技術により種々の成形特性を持つ鋼板が開発され
ている。しかしながら、めっき鋼板の場合には、単に成
形に優れる鋼板上にめっき皮膜を付与しても、母材であ
る鋼板とめっき皮膜の物性が著しく異なるため、鋼板自
体の成形特性が実際の成形段階では十分に発揮されない
ことがある。これはプレス型に実際に接触する面がめっ
き皮膜となりその特性の影響が大きくなるためであり、
めっき鋼板を深絞りや複雑な形状が要求される難成形品
に適用しようとすると、割れや型かじりなど予期せぬ成
形不良が発生しやすい。このような問題に対して、特開
平2−274853〜6号公報の如く、合金化溶融亜鉛
めっき鋼板において鋼板表面の粗度を予め調節して成形
性の向上を図った技術や、特開平4−214877号公
報の如く亜鉛系めっき鋼板の表面に無機化合物を付与し
て摺動性を向上させる技術が開示されているが、いずれ
も満足できるレベルには達していない。On the other hand, automobiles and home electric appliances are required to have higher and more versatile formability in accordance with the diversification of needs, and various types can be obtained by the material design technology utilizing the component design and rolling and annealing conditions. A steel sheet having the forming characteristics of is developed. However, in the case of a plated steel sheet, even if a plating film is simply applied on a steel sheet that is excellent in forming, the physical properties of the steel sheet that is the base material and the plating film are significantly different, so the forming characteristics of the steel sheet itself may differ in the actual forming stage. It may not be fully exerted. This is because the surface that actually contacts the press die becomes a plating film and the effect of its characteristics increases.
When attempting to apply a plated steel sheet to a difficult-to-form product that requires deep drawing or a complicated shape, unexpected forming defects such as cracks and mold galling are likely to occur. To solve such a problem, as disclosed in JP-A-2-274853-6, a technique for improving the formability by adjusting the roughness of the steel sheet surface in advance in an alloyed hot-dip galvanized steel sheet, and JP-A-4-27453. As disclosed in JP-A-214877, a technique for imparting an inorganic compound to the surface of a zinc-plated steel sheet to improve slidability is disclosed, but none of them has reached a satisfactory level.
【0004】[0004]
【発明が解決しようとする課題】以上のように、Zn系
合金めっき鋼板は優れた耐食性を有しながら、プレス成
形性の点で用途が制約され、十分に活用されていないの
が現状である。特にZn−Ni系合金めっき鋼板は薄め
っきで耐食性が優れるため、自動車や家電製品への用途
拡大ニーズが大きく、プレス成形性の向上が望まれてい
る。本発明は自動車や家電用途を中心とする高度なプレ
ス成形性および耐パウダリング性を満足できるZn−N
i系合金めっき鋼板を提供することを目的とする。As described above, Zn-based alloy-plated steel sheets have excellent corrosion resistance, but their applications are limited in terms of press formability and are not fully utilized at present. . In particular, Zn-Ni alloy-plated steel sheets are thin and have excellent corrosion resistance, so that there is a great need for expanding applications to automobiles and home appliances, and improvement in press formability is desired. INDUSTRIAL APPLICABILITY The present invention is a Zn-N which can satisfy high press-moldability and powdering resistance mainly for automobiles and home appliances.
It is an object to provide an i-based alloy plated steel sheet.
【0005】[0005]
【課題を解決するための手段】Zn−Ni系合金めっき
鋼板表面に複数のリング状の凹部を設け、該リング状凹
部の凹部幅をb、凹部中心径をdとした時の凹部断面積
をS、凹部深さをh、鋼板表面1mm2 当りの凹部個数
をnとした時、鋼板表面1mm2 当り凹部体積の合計V
をV=S×h×nで表わすVが0.7×106 μm3 〜
8×106 μm 3 を満足し、全めっき厚みの平均Ni含
有率が9〜15重量%であり、かつ表面層のNi含有率
が平均Ni含有率の1.01〜1.75倍であるZn−
Ni系合金めっき層を鋼板の両面もしくは片面に有する
ことを特徴とするプレス成形性および耐パウダリング性
に優れたZn−Ni系合金めっき鋼板にある。[Means for Solving the Problems] Zn-Ni alloy plating
By providing multiple ring-shaped recesses on the steel plate surface,
The cross-sectional area of the recess, where b is the width of the recess and d is the center diameter of the recess
S, recess depth h, steel plate surface 1 mm2 Number of recesses per hit
Where n is, the steel plate surface is 1 mm2 The total volume V of the recess
Is represented by V = S × h × n, and V is 0.7 × 10.6μm3 ~
8 x 106μm 3 And the average Ni content of the total plating thickness is satisfied.
The content is 9 to 15% by weight, and the Ni content of the surface layer
Is 1.01 to 1.75 times the average Ni content, Zn-
Having Ni alloy plating layer on both sides or one side of steel sheet
Press moldability and powdering resistance
Excellent Zn-Ni alloy plated steel sheet.
【0006】[0006]
【作用】本発明のプレス成形性および耐パウダリング性
に優れたZn−Ni系合金めっき鋼板は、めっき表面に
複数のリング状の凹部を設け、その凹部体積を1mm2
当り0.8〜7.5×106 μm3 とし、合金の主成分
であるNiの平均含有率が9〜15重量%であり、その
表面層のNi含有率が平均Ni含有率より高目になるよ
うに改質されている点に特徴がある。めっき皮膜の改質
方法としては、Zn−Ni系合金めっきを施した後、弱
酸性水溶液中で浸漬もしくはアノード電解によりめっき
表面のZnを優先溶解させる方法、めっき表面にNi含
有率の高いめっきを再度施す方法が挙げられるが、前者
の方が安定性、経済性の面でより有利な方法である。The Zn-Ni alloy plated steel sheet excellent in press formability and powdering resistance of the present invention is provided with a plurality of ring-shaped recesses on the plated surface and the recessed volume is 1 mm 2
And per 0.8~7.5 × 10 6 μm 3, an average content of Ni which is a main component of the alloy is 9-15 wt%, high eyes Ni content of the surface layer is than the average Ni content It is characterized in that it has been modified to become. As a method for modifying the plating film, a method of preferentially dissolving Zn on the plating surface by dipping in a weakly acidic aqueous solution or anodic electrolysis after applying Zn—Ni alloy plating, and plating with a high Ni content on the plating surface are used. The former method is more advantageous in terms of stability and economic efficiency.
【0007】以下、本発明を図面を用いて詳細に説明す
る。図1は本発明によるめっき鋼板の片面の縦断面を模
式的に示したものであり、符号2は表層改質層、3はZ
n−Ni系合金めっき層、4は地鉄を示す。また図2は
図1の凹部1の配列についてめっき鋼板表面の平面を模
式的に示したものであり、符号5はZn−Ni系合金め
っき鋼板を示す。そこでまず本発明に至るまでの研究結
果について述べる。The present invention will be described in detail below with reference to the drawings. FIG. 1 schematically shows a vertical cross section of one side of a plated steel sheet according to the present invention, wherein reference numeral 2 is a surface reforming layer, and 3 is Z.
n-Ni type alloy plating layer, 4 shows base iron. Further, FIG. 2 schematically shows the plane of the surface of the plated steel sheet with respect to the arrangement of the recesses 1 in FIG. 1, and reference numeral 5 denotes a Zn—Ni alloy plated steel sheet. Therefore, first, the research results up to the present invention will be described.
【0008】図3〜図5はZn−Ni系合金めっき鋼板
のプレス成形性および耐パウダリング性の試験結果につ
いて示すものである。試験方法は以下の通りである。め
っき原板としてTi添加極低炭素鋼を用い、調圧により
鋼板表面にリング状凹部を施し、これにZn−Niのめ
っき付着量20g/m2 、Ni含有率5〜20重量%の
Zn−Ni合金めっきを施し、プレス成形性試験に供し
た。3 to 5 show the test results of the press formability and powdering resistance of Zn-Ni alloy plated steel sheets. The test method is as follows. A Ti-added ultra-low carbon steel was used as a plating base plate, and a ring-shaped recess was formed on the surface of the steel plate by pressure control. The Zn-Ni plating adhesion amount was 20 g / m 2 , and the Ni content was 5-20 wt% Zn-Ni. The alloy was plated and subjected to a press formability test.
【0009】プレス成形性試験の評価は、ポンチ径50
mm、絞り比2.2の条件で低粘度油を塗布して円筒プ
レス成形を連続10個行ない、割れ、ポンチ荷重、及び
プレス品の側壁テーピングによるパウダリング程度によ
り、1〜5の評点付けを行った。尚、評点3以上は実用
上問題がないものとして評価した。 5:割れが無くポンチ荷重はほぼ原板レベル。パウダリ
ングの発生なし。 4:割れが無くポンチ荷重は原板よりやや高い。パウダ
リングは微小。 3:割れが無くポンチ荷重は原板よりかなり高い。パウ
ダリングはやや多い。 2:割れが6個以下。パウダリングは多い。 1:割れが7個以上。パウダリングは顕著に多い。The press formability test is evaluated by a punch diameter of 50.
mm, draw ratio 2.2, apply low viscosity oil and perform 10 cylindrical press forming continuously, and give a rating of 1 to 5 according to cracking, punch load, and powdering degree by side wall taping of the pressed product. went. A rating of 3 or higher was evaluated as having no practical problem. 5: There is no crack and the punch load is almost at the original plate level. No powdering occurred. 4: There is no crack and the punch load is slightly higher than the original plate. The powdering is very small. 3: There is no crack and the punch load is considerably higher than the original plate. There is a lot of powdering. 2: 6 or less cracks. There is a lot of powdering. 1: 7 or more cracks. There is a lot of powdering.
【0010】以下に研究結果を研究経緯に沿って説明す
る。先ずはじめに、Ni含有率のプレス成形性におよぼ
す影響を定量的に把握することから検討を行ない、その
結果を図3に示した。この成形性試験はめっき付着量2
0g/m2 、リング状凹部の体積を1mm2 当り2〜5
×106 μm3 とし、まためっき皮膜の改質を行わない
条件で行った。The research results will be described below along with the history of the research. First, the effect of the Ni content on the press formability was quantitatively grasped, and an examination was conducted. The results are shown in FIG. This formability test is based on the coating weight of 2
0 g / m 2 , the volume of the ring-shaped recess is 2 to 5 per 1 mm 2.
It was carried out under the conditions of × 10 6 μm 3 and without modifying the plating film.
【0011】図3について説明すると、プレス成形性は
Ni含有率に依存し、Ni9%未満では、めっき層が軟
らかいために工具との凝着が強くなり、摩擦抵抗が大き
くなるため割れが発生し、またNi15%超では成形性
は良好であるが、パウダリングが多くなるために押し疵
が生じ易く、好ましくない。Ni9〜15%では、ポン
チ荷重が原板より高いレベルであるが、割れがないため
実用上の問題はない。この結果から、次にリング状凹部
の体積の影響を検討し、その結果を図4に示した。この
成形性試験はめっき付着量20g/m2 、Ni含有率を
9〜15%とし、まためっき皮膜の改質を行わない条件
で行った。Referring to FIG. 3, the press formability depends on the Ni content, and if the Ni content is less than 9%, the plating layer is soft and the adhesion with the tool becomes strong, so that the friction resistance increases and cracks occur. Further, if the Ni content exceeds 15%, the formability is good, but since powdering increases, push defects are likely to occur, which is not preferable. With Ni of 9 to 15%, the punch load is higher than that of the original plate, but since there is no crack, there is no practical problem. From this result, the influence of the volume of the ring-shaped recess was examined next, and the result is shown in FIG. This formability test was performed under the conditions that the coating amount was 20 g / m 2 , the Ni content was 9 to 15%, and the plating film was not modified.
【0012】図4はZn−Ni系合金めっき鋼板表面の
リング状凹部体積とプレス成形性との関係を示すもので
ある。図4を説明すると、プレス成形性はめっき表面の
リング状凹部の体積に依存し、めっき表面1mm2 当り
の凹部の体積を0.7〜8×106 μm3 の範囲とする
ことが良い。めっき表面1mm2 当りの凹部の体積を
0.7×106 μm3 以上としたのは、それ未満では潤
滑剤の確保が少なく、成形性および型かじりに対する効
果が小さいからであり、また8×106 μm3 以下とし
たのは、それより超では突起が多くなるため、突起の損
傷によるめっき粉の発生により、押し疵が生じるために
好ましくない。FIG. 4 shows the relationship between the volume of ring-shaped recesses on the surface of a Zn-Ni alloy plated steel sheet and press formability. Referring to FIG. 4, the press formability depends on the volume of the ring-shaped recess on the plating surface, and the volume of the recess per 1 mm 2 of the plating surface is preferably in the range of 0.7 to 8 × 10 6 μm 3 . The volume of the recesses per 1 mm 2 of the plating surface is set to 0.7 × 10 6 μm 3 or more because if the volume is less than that, the lubricant is less secured and the effect on the formability and die galling is small. The reason why the particle size is set to 10 6 μm 3 or less is not preferable because the number of protrusions is larger than that, and a plating flaw is generated due to the generation of plating powder due to damage of the protrusion.
【0013】次に本発明の最大の特徴である表面層の改
質効果について説明する。図5はめっき皮膜の付着量が
20g/m2 、平均Ni含有率は9〜15重量%、めっ
き表面のリング状凹部の体積が0.7×106 μm3 〜
8×106 μm3 における表層部のNi%(NiS )と
全めっき厚の平均Ni%(NiB )の比(NiP )と成
形性の関係を示す。図5を説明すると、成形性はNiP
が1.01〜1.75の範囲が良い。Ni P を1.01
以上としたのは、それ未満ではめっき表層部の硬化上昇
が小さく成形性の効果が小さい、また1.75以下とし
たのは、それ超では成形性は良いが、パウダリングが増
加し、好ましくない。尚、より好ましい範囲は、表面層
のNiP が1.1〜1.5倍である。Next, the most important feature of the present invention is the modification of the surface layer.
Explain the quality effect. Figure 5 shows the amount of plating film deposited
20 g / m2 , The average Ni content is 9 to 15% by weight,
The volume of the ring-shaped recess on the surface is 0.7 × 106μm3~
8 x 106μm3Ni% (NiS)When
Average Ni% of total plating thickness (NiB) Ratio (NiP) And success
The relationship of formality is shown. Referring to FIG. 5, the formability is Ni.P
Is preferably in the range of 1.01 to 1.75. Ni P1.01
The above is less than that, the hardening of the plating surface layer increases
Is small and the effect of moldability is small, and is 1.75 or less.
The reason is that if it exceeds that value, moldability is good, but powdering increases.
In addition, it is not preferable. A more preferable range is the surface layer
NiPIs 1.1 to 1.5 times.
【0014】本発明の対象は、平均Ni含有率が9〜1
5重量%であり、上記のような改質された表面層を有す
るZn−Ni系合金めっき鋼板であり、めっき成分とし
てZn、Niの他に、例えばCo、Fe、Mn、Cr、
Pb、Snなどの金属;SiO2 、Al2 O3 、BaC
rO4 などの難溶性の無機化合物;あるいは有機物など
が1種もしくは複数含有されたものを含む。Ni以外の
成分の合計は5重量%以下が好ましく、この範囲であれ
ば本発明の効果は何ら支障なく発揮される。また本発明
においては、めっき付着量は特に制約されるものではな
いが、耐食性、製造コストの点から10〜60g/m2
が実用的な範囲である。The object of the present invention is that the average Ni content is 9 to 1.
It is 5% by weight and is a Zn-Ni alloy-plated steel sheet having the above-mentioned modified surface layer, and in addition to Zn and Ni as plating components, for example, Co, Fe, Mn, Cr,
Metals such as Pb and Sn; SiO 2 , Al 2 O 3 and BaC
Inorganic compounds having poor solubility such as rO 4 ; or those containing one or more organic compounds are included. The total content of components other than Ni is preferably 5% by weight or less, and within this range, the effects of the present invention are exhibited without any trouble. In the present invention, the coating amount is not particularly limited, but from the viewpoint of corrosion resistance and manufacturing cost, it is 10 to 60 g / m 2.
Is a practical range.
【0015】本発明の如き、改質された表面層を有する
Zn−Ni系合金めっき皮膜は鋼板の片面のみ、あるい
は両面に形成されてよく成形対象に応じて適宜選択でき
る。また、本発明を自動車や家電製品に使用する場合、
鋼板厚みは0.4mm〜1.2mmが適当である。The Zn-Ni alloy plating film having the modified surface layer as in the present invention may be formed on only one side or both sides of the steel sheet and can be appropriately selected according to the object to be formed. When the present invention is used for automobiles and home appliances,
A steel plate thickness of 0.4 mm to 1.2 mm is suitable.
【0016】[0016]
【発明の効果】以上述べた如く、本発明は、Zn−Ni
系合金めっき鋼板の表面にリング状の凹部を設け、さら
にNi含有率の高い表面層に改質することにより、Zn
−Ni系合金めっきが本来有する優れた耐食性を何ら損
なうこと無く、プレス成形性および耐パウダリング性を
向上させることに成功したものであり、Zn−Ni系合
金めっき鋼板の用途を自動車や家電製品の難成形部品な
どに拡大でき、工業的に実用価値が大きいものである。As described above, according to the present invention, the Zn--Ni
By providing a ring-shaped recess on the surface of the base alloy-plated steel sheet and further modifying the surface layer to have a high Ni content, Zn
-It has succeeded in improving press formability and powdering resistance without impairing the excellent corrosion resistance originally possessed by Ni-based alloy plating. It can be expanded to difficult-to-form parts, etc., and is of great practical value industrially.
【図1】本発明によるZn−Ni系合金めっき鋼板の縦
断面、FIG. 1 is a longitudinal section of a Zn—Ni alloy plated steel sheet according to the present invention,
【図2】図1のリング状凹部の配列の一例を示す図、FIG. 2 is a diagram showing an example of an array of ring-shaped recesses in FIG.
【図3】Zn−Ni系合金めっき鋼板の平均Ni含有率
とプレス成形性の関係を示す図FIG. 3 is a diagram showing the relationship between the average Ni content of Zn-Ni alloy plated steel sheet and press formability.
【図4】Zn−Ni系合金めっき鋼板の表面凹部体積と
プレス成形性との関係を示す図FIG. 4 is a diagram showing the relationship between the surface recessed volume of a Zn—Ni alloy plated steel sheet and press formability.
【図5】Zn−Ni系合金めっき鋼板の表層部のNi%
(NiS )と全めっき厚の平均Ni%(NiB )の比
(NiP )に対する成形性との関係を示す図である。FIG. 5: Ni% of the surface layer portion of a Zn-Ni alloy plated steel sheet
It is a diagram showing the relationship between the molding against (Ni S) and the average Ni% of the total plating thickness ratio (Ni B) (Ni P) .
1 本発明によるめっき鋼板のリング状凹部 2 表層改質層 3 Zn−Ni系合金めっき層 4 地鉄 5 Zn−Ni系合金めっき鋼板 b 凹部の幅 d 凹部中心径 h 凹部の深さ t めっき鋼板の板厚 S めっき鋼板の凹部の断面積 P1 めっき鋼板の圧延方向に隣接する凹部間中心距離 P2 めっき鋼板の圧延方向の列間中心距離1 Ring-shaped recessed part of the plated steel sheet according to the present invention 2 Surface modified layer 3 Zn-Ni alloy plated layer 4 Base iron 5 Zn-Ni alloy plated steel sheet b Recess width d Recess center diameter h Recess depth t Plated steel sheet Thickness of the plate S Cross-sectional area of the recess of the plated steel sheet P 1 Center distance between recesses adjacent to the rolling direction of the plated steel sheet P 2 Center distance between rows in the rolling direction of the plated steel sheet
フロントページの続き (72)発明者 山崎 文男 千葉県君津市君津1番地 新日本製鐵株式 会社君津製鐵所内Front page continuation (72) Inventor Fumio Yamazaki 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Corp. Kimitsu Steel Co., Ltd.
Claims (1)
のリング状の凹部を設け、該リング状凹部の凹部幅を
b、凹部中心径をdとした時の凹部断面積をS、凹部深
さをh、鋼板表面1mm2 当りの凹部個数をnとした
時、鋼板表面1mm2 当り凹部体積の合計VをV=S×
h×nで表わすVが0.7×106 μm3〜8×106
μm3 を満足し、全めっき厚みの平均Ni含有率が9〜
15重量%であり、かつ表面層のNi含有率が平均Ni
含有率の1.01〜1.75倍であるZn−Ni系合金
めっき層を鋼板の両面もしくは片面に有することを特徴
とするプレス成形性および耐パウダリング性に優れたZ
n−Ni系合金めっき鋼板。1. A Zn-Ni alloy-plated steel sheet surface is provided with a plurality of ring-shaped recesses, the recess width of the ring-shaped recess is b, and the recess diameter is S, the recess cross-sectional area is S, and the recess depth is Where h is the height and n is the number of recesses per 1 mm 2 of the steel plate surface, the total volume V of recesses per 1 mm 2 of the steel plate surface is V = S ×
V represented by h × n is 0.7 × 10 6 μm 3 to 8 × 10 6.
μm 3 is satisfied, and the average Ni content in the entire plating thickness is 9 to
15% by weight and the Ni content of the surface layer is average Ni
Z having excellent press formability and powdering resistance, characterized in that it has a Zn-Ni alloy plating layer 1.01 to 1.75 times the content on both sides or one side of the steel sheet.
n-Ni alloy plated steel sheet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29194A JPH07197226A (en) | 1994-01-06 | 1994-01-06 | Zn-ni alloy plated steel sheet excellent in press formability and powdering resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29194A JPH07197226A (en) | 1994-01-06 | 1994-01-06 | Zn-ni alloy plated steel sheet excellent in press formability and powdering resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07197226A true JPH07197226A (en) | 1995-08-01 |
Family
ID=11469812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29194A Pending JPH07197226A (en) | 1994-01-06 | 1994-01-06 | Zn-ni alloy plated steel sheet excellent in press formability and powdering resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07197226A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016029214A (en) * | 2010-11-25 | 2016-03-03 | Jfeスチール株式会社 | Steel plate for hot press and method for producing hot press member using the same |
-
1994
- 1994-01-06 JP JP29194A patent/JPH07197226A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016029214A (en) * | 2010-11-25 | 2016-03-03 | Jfeスチール株式会社 | Steel plate for hot press and method for producing hot press member using the same |
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