JP3947444B2 - Manufacturing method of Ni-plated steel sheet for battery can - Google Patents
Manufacturing method of Ni-plated steel sheet for battery can Download PDFInfo
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- JP3947444B2 JP3947444B2 JP2002258517A JP2002258517A JP3947444B2 JP 3947444 B2 JP3947444 B2 JP 3947444B2 JP 2002258517 A JP2002258517 A JP 2002258517A JP 2002258517 A JP2002258517 A JP 2002258517A JP 3947444 B2 JP3947444 B2 JP 3947444B2
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- 229910000831 Steel Inorganic materials 0.000 title claims description 24
- 239000010959 steel Substances 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000007747 plating Methods 0.000 claims description 54
- 229910018104 Ni-P Inorganic materials 0.000 claims description 18
- 229910018536 Ni—P Inorganic materials 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 21
- 230000007797 corrosion Effects 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 13
- 239000010410 layer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000655 Killed steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Electroplating Methods And Accessories (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、電池缶に用いられるメッキ鋼板素材の製造方法に関し、更に詳しくは、電池缶の耐食性、電池特性、表面摺動性を改善しうる、メッキ鋼板素材の製造方法に関するものである。
【０００２】
【従来の技術】
一般に電池缶用の素材として、Ｎｉメッキされた鋼板が使用される。従来Ｎｉメッキは、缶に加工した後のいわゆるバレルメッキによって行われてきたが、缶内面へのＮｉメッキの付着が十分ではなく品質上の不安定性の問題があることから、先メッキ鋼板を缶に加工する方法に置き換わりつつある。先メッキ鋼板の場合、Ｎｉメッキ層が硬く延展性に乏しいことから、プレス加工性に劣り、また加工時にメッキが剥離して耐食性が劣化しやすい等の問題があった。
【０００３】
この問題に対し、Ｎｉメッキ後熱処理することでメッキと地鉄の界面にＦｅ−Ｎｉ拡散層を形成して密着性を向上させると同時に、Ｎｉを再結晶、軟質化してメッキ層の延展性を向上させる方法が知られており、プレス加工性や耐食性は大幅に改善される（例えば特許文献１）。
【０００４】
しかしながら、前述の従来技術では、Ｎｉメッキ層が再結晶、軟質化している結果として、電池製造過程において電池缶を高速搬送する際、電池缶外面どおしの接触における摺動性が必ずしも十分でなく、缶の流れ性が劣り生産性を悪化させる場合がある。
【０００５】
特許文献２では、Ｎｉメッキ層およびもしくはＦｅ−Ｎｉ拡散層を有し更にその上層に加熱処理によって析出硬化したＮｉ−Ｐ合金層を有してなるＮｉメッキ鋼板が開示されており、この鋼板は、前述の缶の流れ性は良好である。
【０００６】
【特許文献１】
特開昭６１−２３５５９４
【特許文献２】
特公平５−２５９５８
【０００７】
【発明が解決しようとする課題】
本発明者等の検討によれば、前記の特許文献２の鋼板は、貯蔵後の接触抵抗値が高いという問題があることが判明した。
【０００８】
そこで本発明は、耐食性、電池特性、摺動性に優れた電池缶用のＮｉメッキ鋼板の提供を目的とする。
【０００９】
【課題を解決するための手段】
Ｎｉ−Ｐ合金メッキは、ａｓメッキでは硬度（Ｈｖ）５００程度であるが、加熱による析出硬化を利用するとその硬度は９００〜１０００にまで上昇することが知られており、特許文献２の技術はこの現象に基づくものである。一方、本発明者等は、貯蔵後の接触抵抗値の悪化は、加熱による析出硬化せしめたＮｉ−Ｐメッキを表面層に有することが原因であることを知見し、適度な硬度（具体的には、３００〜５００程度）を有するＮｉ−Ｐメッキを表面層に形成することが有効であり、前記の表面状態は、Ｎｉ−ＰメッキのＰ含有率と、メッキ後の加熱温度を適切に調整することによって具現化できることを見出したものである。
【００１０】
すなわち本発明の要旨とするところは、Ｎｂ及びＴｉを複合添加した極低炭素鋼板をメッキ原板とする電池缶用のメッキ鋼板の製造方法であって、缶外面になる面に付着量９ｇ／ｍ2以上のＮｉメッキ、付着量１ｇ／ｍ2以上でＰ含有率が３％以上８％以下のＮｉ−Ｐ合金メッキを順次施した後、連続焼鈍によって温度８１０℃以上８８０℃以下、均熱時間１０秒以上６０秒以下の加熱処理を行うことを特徴とするものである。なお缶内面になる面には、付着量１ｇ／ｍ2以上のＮｉメッキ、付着量１ｇ／ｍ2以上でＰ含有率が３％以上８％以下のＮｉ−Ｐ合金メッキのうちのいずれか一方または両方を施すことが望ましい。
【００１１】
【発明の実施の形態】
まず、本発明における電池缶外面に相当する面のメッキの条件について説明する。外面になる面には、付着量９ｇ／ｍ2以上のＮｉメッキ、付着量１ｇ／ｍ2以上でＰ含有率が３％以上８％未満のＮｉ−Ｐ合金メッキを順次形成する必要がある。
【００１２】
用いる鋼板素材は特に限定はないが、電池缶に加工されることを考慮すると極低炭素鋼にＴｉ，Ｎｂ等を単独または複合で添加したものや低炭素Ａｌキルド鋼やＢ添加低炭素鋼等が好ましい。また冷間圧延後の未再結晶の鋼板でも再結晶焼鈍後の鋼板でも使用出来るが、本発明においては、未再結晶鋼板を用いてメッキ後の熱拡散処理によって下地鋼板の再結晶焼鈍も同時に行うことが経済的に最も有利である。
【００１３】
はじめのＮｉメッキの条件は特に限定されないが、無光沢ｗａｔｔ浴から電気メッキする方法が、耐食性やコストの観点から有効である。なお、メッキ前に必要に応じて通常の脱脂、酸洗等の前処理を行うことは言うまでもない。Ｎｉ付着量が９ｇ／ｍ2未満では耐食性が不足するので好ましくない。上限は特に限定されないが、付着量の増加に伴って製造コストの増大を招くので、通常は、４５ｇ／ｍ2程度未満である。
【００１４】
Ｎｉメッキに続いてＮｉ−Ｐメッキを行うが、Ｎｉ−Ｐメッキは、ｗａｔｔ浴に亜リン酸を添加した浴が好適に使用出来る。Ｎｉ−Ｐメッキの付着量が１ｇ／ｍ2未満では、摺動性が不充分である。付着量の上限は特に限定されないが、付着量の増加に伴って製造コストの増大を招くので、通常は、１８ｇ／ｍ2程度である。またＰ含有率が３％未満では摺動性が不充分であり、一方８％を超えるとメッキ後の加熱過程での硬化が激しく進行し、接触抵抗が悪化するので好ましくない。
【００１５】
前記のＮｉメッキ、Ｎｉ−Ｐメッキを順次施した後、加熱処理を行う。加熱条件としては、無酸化雰囲気で鋼板温度８１０℃以上８８０℃以下、均熱時間１０秒以上６０秒以下にする必要がある。この条件で熱処理することにより、メッキ層と地鉄界面にＦｅ−Ｎｉ拡散層を形成してメッキ層の密着性を高め加工後の耐食性を保持するとともに、表層の硬度を適度に調整して摺動性と接触抵抗を両立する表面状態を作り出すことができる。温度、時間とも下限未満では接触抵抗が悪化し、また上限を超えると、通板時の板折れが発生しやすく製造が困難であるとともに材質も悪化するので好ましくない。
【００１６】
加熱処理後、板形状を整えるとともに表面の粗度を調整する目的で調質圧延を行うことが望ましい。調質圧延によって粗度を調節する場合には、通常光沢外観が望まれる為、Ｒａ０．０７μｍ程度以下の低粗度ロールを使用し、１〜３％程度の伸び率になる様に圧延する。
【００１７】
次に本発明の缶内面になる面について説明する。缶内面になる面には、外面と同じ構成も当然適用出来るが、通常内面になる面には摺動性は要求されず、また耐食性の要求レベルも低いことから、付着量１ｇ／ｍ2以上のＮｉメッキ、付着量１ｇ／ｍ2以上でＰ含有率が３％以上８％以下のＮｉ−Ｐ合金メッキのうちのいずれか一方または両方を施せばよい。両方を施す場合には、Ｎｉメッキ、Ｎｉ−Ｐメッキの順で施す。なお、両方をこの順で施せば、外面と類似の構成となるが、前述の様に、通常内面になる面には摺動性は要求されず、また耐食性の要求レベルも低いことから、付着量１ｇ／ｍ2以上のＮｉメッキのみを施すことが経済的に最も有利である。なお、Ｎｉ付着量が下限未満では耐食性が不足する。内面になる面のメッキ後も前述と全く同様に、加熱処理、調質圧延を行えば良い。
【００１８】
【実施例】
以下に実施例によって本発明を詳細に説明する。
【００１９】
（実施例１〜５および比較例１〜４）
板厚０．３ｍｍのＮｂ−Ｔｉ−Ｓｕｌｃ鋼（未再結晶鋼板）を原板とし、Ｎｉメッキ→Ｎｉ−Ｐメッキ→加熱処理→調質圧延、の順でサンプルを製造した。
Ｎｉメッキは以下に示す浴を使用した。表１中にその付着量を示す。
無光沢ワット浴； 硫酸ニッケル：３５０ｇ／リットル＋塩化ニッケル：７０ｇ／リットル＋ホウ酸：４５ｇ／リットル
Ｎｉ−Ｐメッキは、上記無光沢ワット浴に亜リン酸を１〜４０ｇ／ｌ添加してメッキ層中Ｐ濃度を制御した。表１中にその付着量とＰ含有率を示す。
加熱処理は、無酸化雰囲気にて、表１に示す条件によって行った。
調質圧延は、粗度０．０５μｍのロールを用い、伸び率２％となる様に圧延した。
【００２０】
（性能評価方法）
前記鋼板サンプルをプレス加工し、通常のＬＲ０６型アルカリマンガン電池用の缶を製造し、この缶で評価を行った。
【００２１】
▲１▼ 耐食性；正極端子部を上に向けて、塩水噴霧試験（ＪＩＳ−Ｚ−２３７１）を３時間行い、赤錆発生状況を目視観察した。錆なしを「○」、極軽微な錆（点状錆が１０個まで）ありを「△」、錆ありを「×」と評価した。
▲２▼ 摺動性；ｈｅｉｄｏｎ１４型試験装置を用い、缶胴側面を１０ｍｍφステンレス球で１００ｇの荷重で摺動し、動摩擦係数を求めた。０．１５未満を「○」、０．１５超０．２未満を「△」、０．２以上を「×」と評価した。
▲３▼ 接触抵抗；電池缶を６０℃９０％ＲＨに２０日間放置した後、山崎精機研究所製電気接点シュミレータＣＲＳ−１を用い、荷重１００ｇにて正極端子部の接触抵抗を測定した。１０ｍΩ未満を「○」、１０ｍΩ以上２０ｍΩ未満を「△」、２０ｍΩ以上を「×」と評価した。
【００２２】
表１に結果を示すように、本発明の実施例では良好な耐食性、摺動性、接触抵抗が得られた。
【００２３】
【表１】
【発明の効果】
本発明によって、耐食性、電池特性、摺動性に優れた電池缶用のＮｉメッキ鋼板の製造方法が得られた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a plated steel sheet material used for a battery can, and more particularly to a method for producing a plated steel sheet material that can improve the corrosion resistance, battery characteristics, and surface slidability of the battery can.
[0002]
[Prior art]
In general, a Ni-plated steel sheet is used as a material for a battery can. Conventionally, Ni plating has been carried out by so-called barrel plating after processing into a can, but since the Ni plating adheres to the inner surface of the can and is not sufficient, there is a problem of instability in quality. It is being replaced by the method of processing. In the case of a pre-plated steel sheet, since the Ni plating layer is hard and poor in spreadability, the press workability is inferior, and the plating is peeled off during processing and the corrosion resistance is liable to deteriorate.
[0003]
To solve this problem, heat treatment after Ni plating forms a Fe-Ni diffusion layer at the interface between the plating and the base iron to improve adhesion, and at the same time recrystallizes and softens Ni to increase the spreadability of the plating layer. A method of improving is known, and press workability and corrosion resistance are greatly improved (for example, Patent Document 1).
[0004]
However, in the above-described prior art, as a result of the Ni plating layer being recrystallized and softened, when the battery can is conveyed at high speed during the battery manufacturing process, the slidability in contact between the outer surfaces of the battery can is not always sufficient. In some cases, the flowability of the can is poor and the productivity is deteriorated.
[0005]
Patent Document 2 discloses a Ni-plated steel sheet having a Ni-plated layer and / or a Fe-Ni diffusion layer and further having a Ni-P alloy layer deposited and hardened by heat treatment on the upper layer. The flowability of the aforementioned can is good.
[0006]
[Patent Document 1]
JP 61-235594 A
[Patent Document 2]
JP 5-25958
[0007]
[Problems to be solved by the invention]
According to the study by the present inventors, it has been found that the steel sheet of Patent Document 2 has a problem that the contact resistance value after storage is high.
[0008]
Then, this invention aims at provision of the Ni plating steel plate for battery cans excellent in corrosion resistance, battery characteristics, and slidability.
[0009]
[Means for Solving the Problems]
Ni-P alloy plating has a hardness (Hv) of about 500 in as plating. However, it is known that the hardness increases to 900 to 1000 when precipitation hardening by heating is used. This is based on this phenomenon. On the other hand, the present inventors have found that the deterioration of the contact resistance value after storage is caused by the fact that the surface layer has a precipitation-hardened Ni-P plating by heating. It is effective to form Ni-P plating having about 300 to 500) on the surface layer, and the surface state is appropriately adjusted for the P content of Ni-P plating and the heating temperature after plating. It has been found that it can be realized by doing.
[0010]
That is, the gist of the present invention is a method for producing a plated steel sheet for a battery can using an ultra-low carbon steel sheet with a composite addition of Nb and Ti as a plating base, and the amount of adhesion is 9 g / m on the surface that becomes the outer surface of the can. 2 and Ni plating, after P content in coating weight 1 g / m 2 or more is successively subjected to Ni-P alloy plating of 8% or less than 3%, less 880 ° C. temperature of 810 ° C. or higher by continuous annealing, soaking time The heat treatment is performed for 10 seconds to 60 seconds. Note that the surface to become inner surface of the can, the deposition amount 1 g / m 2 or more Ni plating, either one of the Ni-P alloy plating of P content in coating weight 1 g / m 2 or more 3% or more and 8% or less Or it is desirable to apply both.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
First, conditions for plating a surface corresponding to the outer surface of the battery can in the present invention will be described. The surface to be the outer surface, the adhesion amount 9 g / m 2 or more Ni plating, coating weight 1 g / m 2 or more P content needs to be sequentially formed Ni-P alloy plating of 3% or more and less than 8%.
[0012]
The steel plate material used is not particularly limited, but considering that it is processed into a battery can, Ti, Nb or the like added to ultra low carbon steel alone or in combination, low carbon Al killed steel, B added low carbon steel, etc. Is preferred. In addition, in the present invention, the non-recrystallized steel sheet after the cold rolling or the steel sheet after the recrystallization annealing can be used. It is economically most advantageous to do.
[0013]
The conditions for the initial Ni plating are not particularly limited, but a method of electroplating from a matte watt bath is effective from the viewpoint of corrosion resistance and cost. Needless to say, pretreatment such as normal degreasing and pickling is performed before plating. If the Ni adhesion amount is less than 9 g / m 2 , the corrosion resistance is insufficient, which is not preferable. Although an upper limit is not specifically limited, Since it will cause the increase in manufacturing cost with the increase in adhesion amount, it is usually less than about 45 g / m < 2 >.
[0014]
Ni-P plating is performed subsequent to Ni plating. For Ni-P plating, a bath obtained by adding phosphorous acid to a watt bath can be preferably used. When the adhesion amount of Ni—P plating is less than 1 g / m 2 , the slidability is insufficient. Although the upper limit of the adhesion amount is not particularly limited, it is usually about 18 g / m 2 because the production cost increases with the increase in the adhesion amount. On the other hand, if the P content is less than 3%, the slidability is insufficient. On the other hand, if it exceeds 8%, curing in the heating process after plating progresses violently and contact resistance deteriorates.
[0015]
After the Ni plating and Ni-P plating are sequentially performed, heat treatment is performed. As heating conditions, it is necessary that the steel sheet temperature is 810 ° C. or higher and 880 ° C. or lower and the soaking time is 10 seconds or longer and 60 seconds or shorter in an oxygen-free atmosphere. By heat-treating under these conditions, an Fe-Ni diffusion layer is formed at the interface between the plating layer and the base iron to increase the adhesion of the plating layer, maintain the corrosion resistance after processing, and adjust the hardness of the surface layer to adjust the surface layer appropriately. It is possible to create a surface state that achieves both mobility and contact resistance. If the temperature and time are less than the lower limit, the contact resistance is deteriorated, and if the upper limit is exceeded, it is not preferable because the plate is likely to be broken at the time of passing and difficult to manufacture and the material is also deteriorated.
[0016]
After the heat treatment, it is desirable to perform temper rolling for the purpose of adjusting the plate shape and adjusting the surface roughness. When the roughness is adjusted by temper rolling, a glossy appearance is usually desired. Therefore, a low roughness roll having a Ra of about 0.07 μm or less is used and rolled so as to have an elongation of about 1 to 3%.
[0017]
Next, the surface which becomes the inner surface of the can of the present invention will be described. Of course, the same structure as the outer surface can be applied to the inner surface of the can, but usually the inner surface is not required to have slidability and the required level of corrosion resistance is low, so the amount of adhesion is 1 g / m 2 or more. Any one or both of Ni plating and Ni—P alloy plating with an adhesion amount of 1 g / m 2 or more and a P content of 3% or more and 8% or less may be applied. When both are applied, Ni plating and Ni-P plating are applied in this order. If both are applied in this order, the structure is similar to the outer surface, but as described above, the surface that is normally the inner surface is not required to be slidable, and the required level of corrosion resistance is low. It is economically most advantageous to apply only Ni plating in an amount of 1 g / m 2 or more. In addition, if Ni adhesion amount is less than a minimum, corrosion resistance will be insufficient. After the plating on the inner surface, heat treatment and temper rolling may be performed in the same manner as described above.
[0018]
【Example】
Hereinafter, the present invention will be described in detail by way of examples.
[0019]
(Examples 1-5 and Comparative Examples 1-4)
A sample was manufactured in the order of Ni plating → Ni—P plating → heat treatment → temper rolling using Nb—Ti—Sulc steel (non-recrystallized steel plate) having a thickness of 0.3 mm as an original plate.
Ni plating used the bath shown below. Table 1 shows the amount of adhesion.
Matte watt bath; nickel sulfate: 350 g / liter + nickel chloride: 70 g / liter + boric acid: 45 g / liter Ni-P plating is performed by adding 1 to 40 g / l of phosphorous acid to the matte watt bath. The P concentration in the layer was controlled. Table 1 shows the adhesion amount and P content.
The heat treatment was performed in a non-oxidizing atmosphere under the conditions shown in Table 1.
The temper rolling was performed using a roll having a roughness of 0.05 μm so that the elongation was 2%.
[0020]
(Performance evaluation method)
The steel plate sample was pressed to produce a can for a normal LR06 type alkaline manganese battery, and the can was evaluated.
[0021]
(1) Corrosion resistance: The salt spray test (JIS-Z-2371) was conducted for 3 hours with the positive terminal portion facing upward, and the occurrence of red rust was visually observed. The evaluation was “◯” for no rust, “Δ” for extremely light rust (up to 10 spot-like rusts), and “×” for rust.
(2) Sliding property: Using a heidon 14 type test apparatus, the side surface of the can body was slid with a 10 mmφ stainless steel ball under a load of 100 g, and the dynamic friction coefficient was determined. Less than 0.15 was evaluated as “◯”, more than 0.15 and less than 0.2 as “Δ”, and 0.2 or more as “x”.
(3) Contact resistance: The battery can was allowed to stand at 60 ° C. and 90% RH for 20 days, and then the contact resistance of the positive electrode terminal portion was measured at a load of 100 g using an electrical contact simulator CRS-1 manufactured by Yamazaki Seiki Laboratory. Less than 10 mΩ was evaluated as “◯”, 10 mΩ or more and less than 20 mΩ was evaluated as “Δ”, and 20 mΩ or more was evaluated as “X”.
[0022]
As shown in Table 1, good corrosion resistance, slidability, and contact resistance were obtained in the examples of the present invention.
[0023]
[Table 1]
【The invention's effect】
By this invention, the manufacturing method of the Ni plating steel plate for battery cans excellent in corrosion resistance, battery characteristics, and slidability was obtained.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2002258517A JP3947444B2 (en) | 2002-09-04 | 2002-09-04 | Manufacturing method of Ni-plated steel sheet for battery can |
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| JP2002258517A JP3947444B2 (en) | 2002-09-04 | 2002-09-04 | Manufacturing method of Ni-plated steel sheet for battery can |
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| JP3947444B2 true JP3947444B2 (en) | 2007-07-18 |
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