JPS59104496A - Corrosion-resistant surface-treated steel sheet - Google Patents
Corrosion-resistant surface-treated steel sheetInfo
- Publication number
- JPS59104496A JPS59104496A JP21144482A JP21144482A JPS59104496A JP S59104496 A JPS59104496 A JP S59104496A JP 21144482 A JP21144482 A JP 21144482A JP 21144482 A JP21144482 A JP 21144482A JP S59104496 A JPS59104496 A JP S59104496A
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- alloy
- alcohol
- steel sheet
- metal
- 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.)
- Granted
Links
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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/023—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 only coatings only including layers of metallic material only coatings of metal elements only
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
７ ／Ｌ，コールを含有するガソリンを主体とする燃料
を収容する容器として最適な耐食性及び成形性にきわめ
てすぐれた性能を発揮する鋼板に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steel sheet that exhibits excellent corrosion resistance and formability, which is suitable for use as a container for storing fuel mainly consisting of gasoline containing 7/L and coal.
例えば、自動車用燃料容器（ガソリンタンク）としては
、従゛来Ｐｂ Ｋ対して３〜２５％のＳｎを含有せしめ
たＰｂ − Ｓｎ合金を被覆した所謂ターンメッキ鋼板
が使用されており、耐食性，加工性，経済性等の点で良
好な結果を得ている。しかるに、最近の石油事情の悪化
（石油コストの上昇および生産量の減少）に伴って、自
動車用燃料としてガソリンに代って、メチルアルコール
やエチルアルコールの如きアルコール燃料或いはガンリ
ンに対シテメチルアルコール，エチルアルコール，メチ
ルターシャｌ） − メチルアルコール（ＭＴＢＡ）等
の如きアルコールを混入した燃＃＋（所謂、ガソホール
）を代替燃料として使用することが提案され実施されつ
つある。For example, so-called turn-plated steel sheets coated with a Pb-Sn alloy containing 3 to 25% Sn to PbK have traditionally been used for fuel containers (gasoline tanks) for automobiles. Good results have been obtained in terms of performance, economy, etc. However, with the recent deterioration of the oil situation (rise in oil costs and decrease in production), alcohol fuels such as methyl alcohol and ethyl alcohol, or alcohol fuels such as methyl alcohol and methyl alcohol, are being used instead of gasoline as automobile fuels. The use of fuel (so-called gasohol) mixed with alcohol such as ethyl alcohol, methyl alcohol (MTBA), etc. as an alternative fuel has been proposed and is being put into practice.
これらのアルコール燃料或いはアルコール添加ガソリン
（ガソホール）は、従来自動車燃料容器として使用され
ているＰｂ’Ｓｎ合金鋼板の耐食性を著しく劣化せしめ
る。すなわち、Ｐｂ − Ｓｎ合金鋼板はＰｂを主体と
するｐｂとＳｎの共晶合金でその被覆層が構成されてい
るために、例えば（１） Ｐｂ金属はメチルアルコー
ルに著しく腐食されるため、被覆層のｐｂ金属層の部分
が腐食され易い。These alcohol fuels or alcohol-added gasoline (gasohol) significantly deteriorate the corrosion resistance of Pb'Sn alloy steel sheets conventionally used as automobile fuel containers. In other words, since the coating layer of a Pb-Sn alloy steel sheet is composed of a eutectic alloy of Pb and Sn, which is mainly composed of Pb, for example (1) Pb metal is severely corroded by methyl alcohol, so the coating layer is The PB metal layer is easily corroded.
（２）アルコール燃料又はアルコール添加ガソリンが酸
化されて生成されるアセトアルデヒド酢酸（エチルアル
コールの酸化生成物）或いはフォルムアルデヒド、ギ酸
（メチルアルコールの酸化生成物）によって、ｐｂ金金
属著しく腐食され、被覆層中のＰｂ金属層の部分が腐食
され易い。(2) PB gold metal is severely corroded by acetaldehyde acetic acid (oxidation product of ethyl alcohol), formaldehyde, and formic acid (oxidation product of methyl alcohol) produced when alcohol fuel or alcohol-added gasoline is oxidized, and the coating layer is The Pb metal layer inside is easily corroded.
（３） アルコールに含有される水分或いはアルコー
ルの酸化生成物によって、被覆層で形成されたピンホー
ル部から腐食を増大せしめる。(3) Moisture contained in alcohol or oxidation products of alcohol increase corrosion from pinholes formed in the coating layer.
等の原因によって、Ｐｂ −Ｓｎ合金メンキ鋼板はその
耐食性が著しく劣化せしめられる。Due to these reasons, the corrosion resistance of Pb-Sn alloy steel sheets is significantly deteriorated.
このため、どのような燃料を収容する容器鋼板として１
、被覆層のピンホールが少なく、またアルコールやアル
コールの酸化生成物匠対して耐食性のすぐれた、高耐食
性の素材が要求されることになる。For this reason, as a container steel plate for storing any kind of fuel, 1
Therefore, a material with high corrosion resistance is required, which has fewer pinholes in the coating layer and has excellent corrosion resistance against alcohol and alcohol oxidation products.
本発明はこれらの状況に対処してなされたものでらり、
Ｐｂ −Ｓｎ合金メッキ鋼板のアルコール燃料又はアル
コール含有燃料に対する耐食性に関する問題点を解決す
ると共に、成形加工性、溶接性。The present invention was made in response to these situations, and
It solves the problem of corrosion resistance of Pb-Sn alloy plated steel sheet against alcohol fuel or alcohol-containing fuel, and also improves formability and weldability.
半田性もすぐれた燃料容器用鋼板を提供することを目的
にしたものである。The purpose of this invention is to provide a steel plate for fuel containers that has excellent solderability.
すなわち、本発明の要旨とするところは、Ｐｂ〜Ｓｎ合
金メッキ鋼板のＰｂ −Ｓｎ合金被覆層の片面または両
面の上部表面層ＫＳｎ金属被覆層を形成せしめた耐食性
表面処理鋼板であり、これによってＰｂ−Ｓｎ合金被覆
鋼板のピンホール部の封孔によるピンホールを減少させ
て耐食性の向上を計り、Ｓｎ金属被覆層でアルコール及
びアルコールの酸化生成物に対する優れた耐食性を向上
せしめたアルコール燃料及びアルコール含有燃料に対す
る高耐食性の燃料容器用鋼板を提供するものである。That is, the gist of the present invention is a corrosion-resistant surface-treated steel sheet in which a KSn metal coating layer is formed as an upper surface layer on one or both sides of a Pb-Sn alloy coating layer of a Pb-Sn alloy plated steel sheet. - Alcohol fuel and alcohol-containing product that improves corrosion resistance by reducing pinholes caused by sealing pinholes in Sn alloy-coated steel sheets, and improves excellent corrosion resistance against alcohol and alcohol oxidation products with a Sn metal coating layer. The present invention provides a steel plate for fuel containers that has high corrosion resistance against fuel.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
本発明においてはまず鋼板表面に溶融メッキ法或いは電
気メツキ法により、Ｐｂ −Ｓｎ合金被覆する。このＰ
ｂ −Ｓｎ合金被覆処理は、鋼板表面をｐｂ−Ｓｎ合金
被覆処理に適した清浄、活性化された状態で直接Ｐｂ
−Ｓｎ合金被覆処理がなされたものでもよく、又鋼板表
面Ｋ Ｎｉ＋ Ｃｏ＋ Ｃｕ等の他金属又は合金を被覆
処理した後にＰｂ −Ｓｎ合金被覆処理がなされたもの
でもよい。In the present invention, first, the surface of a steel plate is coated with a Pb--Sn alloy by hot-dip plating or electroplating. This P
b-Sn alloy coating treatment is performed by directly applying Pb to the steel plate surface in a clean and activated state suitable for pb-Sn alloy coating treatment.
The steel plate may be coated with a -Sn alloy, or may be coated with a Pb-Sn alloy after the surface of the steel plate is coated with another metal or alloy such as KNi+Co+Cu.
このＰｂ −Ｓｎ合金被覆層の厚さは、２〜１０μ（好
ましくは２５〜７５μ）の厚さの被覆層が本発明では使
用される。すなわち、Ｐｂ −Ｓｎ合金被覆層の厚さが
２μ未満では、本発明の目的とするＳｎ金属被覆層をこ
の表面に７１１でも、ピンホールの発年数が多く耐食性
が劣る。一方、Ｐｂ −Ｓｎ合金被覆層の厚さが１０μ
をこえるとその加工性が劣化すると共に一１経済性の点
で好ましくない。The Pb-Sn alloy coating layer used in the present invention has a thickness of 2 to 10 microns (preferably 25 to 75 microns). That is, if the thickness of the Pb-Sn alloy coating layer is less than 2 μm, even if the Sn metal coating layer 711, which is the object of the present invention, is provided on the surface, pinholes will occur many times and the corrosion resistance will be poor. On the other hand, the thickness of the Pb-Sn alloy coating layer was 10μ
If it exceeds this, the workability deteriorates and it is also unfavorable from the economic point of view.
又、このＰｂ −Ｓｎ合金被覆層は、特に規定するもの
でないが、ピンホールの少ない被覆層を形成するために
、Ｓｎ含有景が；３〜２５％のＰｂ −Ｓｎ合金被覆層
を使用するのが好ましい。Although this Pb-Sn alloy coating layer is not particularly specified, in order to form a coating layer with few pinholes, a Pb-Sn alloy coating layer with an Sn content of 3 to 25% is used. is preferred.
次いで、これら鋼板表面に形成されたＰｂ −Ｓｎ合金
被覆層の片面または両面に上層としてＳｎ金属被覆層が
形成される。Ｓｎ金属被覆法は、溶融メッキ法、電気メ
ツキ法等が考えられるが、長時間浸漬溶融メッキ法は避
けるべきでむしろ電気メツキ法で行う方がよい。すなわ
ち、Ｐｂ −Ｓｎ合金被覆層上層のＳｎ溶融メッキ法は
、Ｓｎメッキ浴中Ｋ Ｐｂ −Ｓｎ合金被覆層のｐｂ金
金属溶解し、蓄積ト
し、Ｓｎ金属被覆層が得られなくなる傾向にらる。Next, a Sn metal coating layer is formed as an upper layer on one or both sides of the Pb-Sn alloy coating layer formed on the surface of these steel sheets. Possible Sn metal coating methods include hot-dip plating and electroplating, but long-time immersion hot-dip plating should be avoided and electroplating is preferable. That is, in the Sn hot-dip plating method for the upper layer of the Pb-Sn alloy coating layer, the Pb gold metal of the KPb-Sn alloy coating layer tends to dissolve and accumulate in the Sn plating bath, making it impossible to obtain a Sn metal coating layer. .
電気メツキ法によるＳｎ被覆処理法は、浴組成を特に規
定するものではないが、フェロスタン浴或いはハロゲン
浴等、例えば
硫酸第一スズ ６０９／ノ
フエ、ノールスルフォン酸
（硫酸換算で） ２０ｊｉ／Ｉ
ＥＮＳＡ （添加剤） １０９／ＩＪのメン
キ浴を用いて温度：常温〜８０℃、電流密度：５〜１５
０Ａ／ｄｍ２の電解条件で処理するとよい。In the Sn coating treatment method by electroplating method, the bath composition is not particularly specified, but it may be a ferrostane bath or a halogen bath, for example, stannous sulfate 609/NOFE, norsulfonic acid (in terms of sulfuric acid) 20ji/I ENSA ( Additives) Using a 109/IJ Menki bath, temperature: room temperature to 80°C, current density: 5 to 15
It is preferable to process under electrolytic conditions of 0 A/dm2.
またこの電解処理によるＳｎ被覆処理に先立って、酸又
はアルカリによるＰｂ −Ｓｎ合金被覆層の活性化処理
を施す事が、Ｓｎ被覆層のＰｂ −Ｓｎ合金被覆層表面
に対する均−被覆性及び密着性の点から好ましい。例え
ば、２５〜１０％のＮａＯＨ溶液を用いて、温度：常温
〜９０℃で１〜５秒間の浸漬又は電解処理が行なわれ、
る、。Furthermore, prior to the Sn coating treatment by this electrolytic treatment, activating the Pb-Sn alloy coating layer with acid or alkali improves the uniform coverage and adhesion of the Sn coating layer to the surface of the Pb-Sn alloy coating layer. It is preferable from the point of view. For example, immersion or electrolytic treatment is performed using a 25-10% NaOH solution at a temperature of room temperature to 90°C for 1 to 5 seconds,
Ru,.
このＳｎ被覆処理は、Ｐｂ 、−Ｓｎ合金破被覆層ンホ
ールを、Ｓｎ被覆の重畳効果によって極めて著しく減少
し、その耐食性を向上する。又、Ｓｎ金属は従来から知
られている様に、アルコール、アルコールの酸化物に対
する耐食性が極めてすぐれているため、Ｐｂ −Ｓｎ合
金被覆層表面をＳｎ金属で被覆することによって、アル
コール燃料及びアルコール含有燃料に対して腐食の極め
て少ない燃料容器用鋼板を得ることができる。This Sn coating treatment reduces the Pb, -Sn alloy fracture layer hole very significantly due to the superimposed effect of the Sn coating and improves its corrosion resistance. In addition, as is known from the past, Sn metal has extremely high corrosion resistance against alcohol and alcohol oxides, so by coating the surface of the Pb-Sn alloy coating layer with Sn metal, alcohol fuel and alcohol-containing It is possible to obtain a steel plate for a fuel container that exhibits extremely little corrosion against fuel.
％に、本発明は、Ｐｂ −Ｓｎ合金被覆層の表面にＳｎ
被覆処理が施されるために、Ｓｎ金属単独被覆処理鋼板
に比して、
（１） Ｐｂ −Ｓｎ合金被覆層とＳｎ金属被覆層の
重畳効果によってピンホールが少なくなる。%, the present invention provides Sn on the surface of the Pb-Sn alloy coating layer.
Because of the coating treatment, compared to a steel sheet coated with Sn metal alone, (1) Pinholes are reduced due to the superimposed effect of the Pb-Sn alloy coating layer and the Sn metal coating layer.
（２） Ｓｎ金属はＰｂ ’−Ｓｎ合金に比して、電
位的に卑なために、Ｓｎ金属被覆層にピンホールが存在
しても、Ｓｎ金属の犠牲防食効果によって、Ｐｂ −Ｓ
ｎ合金の腐食を防止することができる。(2) Sn metal is less noble in potential than Pb'-Sn alloy, so even if a pinhole exists in the Sn metal coating layer, the sacrificial corrosion protection effect of Sn metal will prevent Pb-S
Corrosion of n-alloy can be prevented.
一方、Ｓｎ金属の単独被覆層では、ＳｎがＦｅ ＶＣ比
して、電位的に責なため、Ｓｎ被覆層のピンホール部で
鋼板に腐食を生じ、赤錆と孔食を発生する問題がある。On the other hand, in a single coating layer of Sn metal, since Sn has a higher potential than Fe VC, there is a problem that corrosion occurs in the steel plate at the pinhole portion of the Sn coating layer, causing red rust and pitting corrosion.
また、Ｓｎ単独被覆層のみでピンホールを減少せしめる
ためには、被覆層の厚さを増加せしめる必要があり、そ
のために経済的でなく、成形加工性で好ましくない。In addition, in order to reduce pinholes using only a Sn coating layer, it is necessary to increase the thickness of the coating layer, which is not economical and unfavorable in terms of moldability.
更にまた、本発明は、Ｐｂ −Ｓｎ合金被覆層の表面に
Ｓｎ金属の被覆処理を施してから、加熱溶融処理を施す
事によりさらに性能の向上を付与する事も可能でろる。Furthermore, in the present invention, it is possible to further improve the performance by coating the surface of the Pb--Sn alloy coating layer with Sn metal and then subjecting it to heating and melting treatment.
すなわち、Ｓｎ金属の溶融温度（２３１℃）以上で加熱
処理を短時間施す事によって、下層Ｐｂ −Ｓｎ合金被
覆層のピンホール部に対する溶融Ｓｎ金属による封孔処
理がなされると共に・、Ｐｂ −Ｓｎ合金被覆層とＳｎ
被覆層の界面での合金化反応によって、上層被覆層Ｓｎ
金属と下層被覆層Ｐｂ −Ｓｎ合金の接合が強化される
事によって、耐食性及び被覆層の密着性強化による加工
成形性の向上が一段と増加する。That is, by performing heat treatment for a short time at or above the melting temperature of Sn metal (231°C), the pinhole portion of the lower Pb-Sn alloy coating layer is sealed with molten Sn metal, and the Pb-Sn Alloy coating layer and Sn
Due to the alloying reaction at the interface of the coating layer, the upper coating layer Sn
By strengthening the bond between the metal and the Pb--Sn alloy of the lower coating layer, the corrosion resistance and the processing formability are further improved by strengthening the adhesion of the coating layer.
この場合の加熱溶融処理条件は、特に規定するものでは
ないが、アルコール及びアルコールの酸化生成物に対す
る耐食性を確保するためには、最表面層Ｋ Ｓｎ金属被
覆層が残存されている事が必要で、加熱雰囲気は、Ｎ２
ガスまたはＭ ｉ ｘガスのＷ、囲気中でるるいはフェ
ノールスルフォン酸Ｓｎの水溶液やＺｎＣ＆の水溶液を
フラツクスとして塗布した後、２４０〜２８０℃で０．
３〜３秒間の加熱溶融処理がなされる。The heating and melting treatment conditions in this case are not particularly specified, but in order to ensure corrosion resistance against alcohol and alcohol oxidation products, it is necessary that the outermost surface layer K Sn metal coating layer remains. , the heating atmosphere is N2
After applying W gas or Mix gas as a flux in an ambient atmosphere, an aqueous solution of Sn phenolsulfonic acid or an aqueous solution of ZnC&, the flux is heated at 240 to 280°C.
A heating and melting process is performed for 3 to 3 seconds.
本発明において、Ｐｂ −Ｓｎ合金被覆層の上層に施さ
れるＳｎ金属被覆層について種々の検討の結果、０１〜
７μ（好ましくは０．１５〜５μ）厚さの範囲で被覆処
理を施すのが、本発明の目的とする性能を確保し、経済
的にも有利でるる。In the present invention, as a result of various studies regarding the Sn metal coating layer applied to the upper layer of the Pb-Sn alloy coating layer,
Applying the coating treatment to a thickness of 7 μm (preferably 0.15 μm to 5 μm) ensures the desired performance of the present invention and is also economically advantageous.
すなわち、Ｓｎ被覆層の厚みが０．１μ未満では、下層
のｐｂ ’−Ｓｐ合金被覆層を均一に被覆することが難
しい場合がらり、Ｓｎ被覆層のピンホール生成量が多く
ｐｂ −Ｓｎ合金層露出部分がアルコール及びアルコ
ールの酸化生成物によって腐食されると共に、また長期
間上記の溶液に曝される場合、Ｓ’ｎ被覆層の耐食寿命
の点で限度がらるため、本発明の目的とする効果を得る
ために好ましくない。That is, if the thickness of the Sn coating layer is less than 0.1μ, it may be difficult to uniformly cover the underlying pb'-Sp alloy coating layer, and a large number of pinholes will be generated in the Sn coating layer, resulting in exposure of the pb-Sn alloy layer. If the part is corroded by alcohol and alcohol oxidation products and is exposed to the above solution for a long period of time, the corrosion resistance life of the S'n coating layer is limited, so that the desired effect of the present invention cannot be achieved. Unfavorable to get.
一方、Ｓｎ被覆層の厚さが７μを超えると、Ｓｎ被覆層
のピンホール及び下層のＰｂ −Ｓｎ合金被覆層との重
畳効果による全被覆層のピンホールの減少とともに、そ
の効果が飽和し、アルコール及び７ ／ｌ／コールの酸
化生成物による腐食に対する耐食寿命の点でもその効果
が飽和し、経済的でなくなる。さらに、Ｓｎ被覆層はそ
の表面が極めて平滑性に富むためか、その厚さが厚くな
りすぎ７μをこえると、プレス成形加工において潤滑油
脂の保持効果が減少し、燃料容器のプレス成形において
ネッキング或いはプレス割れを発生し易くなるので好ま
しくない。以上の観点から、本発明のＳｎ被覆処理は０
１〜７μ（好ましくは０．１５〜５μ）の厚さの範囲が
好ましい。On the other hand, when the thickness of the Sn coating layer exceeds 7μ, the pinholes in the entire coating layer decrease due to the superposition effect of the pinholes in the Sn coating layer and the Pb-Sn alloy coating layer below, and the effect becomes saturated. In terms of the corrosion resistance life due to the oxidation products of alcohol and 7/l/coal, its effectiveness becomes saturated and it becomes uneconomical. Furthermore, perhaps because the surface of the Sn coating layer is extremely smooth, if the thickness becomes too thick and exceeds 7 μm, the lubricating oil retention effect during press molding will decrease, resulting in necking or other problems during press molding of fuel containers. This is not preferable because it tends to cause press cracks. From the above points of view, the Sn coating treatment of the present invention is 0
A thickness range of 1 to 7μ (preferably 0.15 to 5μ) is preferred.
次に１、本発明の製品におけるアルコール及びアルコー
ルの酸化生成物による耐食性向上効果が必要とされるの
は、燃料が含有される燃料容器の内面であるので、本発
明はおいてＳｎ被覆処理は鋼板の片面のみに施される事
によって、その目的は充分に達成される。勿論、両面Ｋ
Ｓｎ金属被覆処理が施されても構わない。Next, 1. In the product of the present invention, the corrosion resistance improvement effect of alcohol and alcohol oxidation products is required on the inner surface of the fuel container containing the fuel. By applying it only to one side, the purpose is fully achieved. Of course, both sides K
Sn metal coating treatment may also be performed.
さらに、本発明の製品においてＳｎ被覆処理層の表面に
、塗料の密着性向上或いはより一層のピンホール減少等
の目的によって、リン酸、フィチン酸、クロム酸等の水
溶液による化学処理（浸漬又は電解処理等）を施しても
何ら差支えなく、又下層のＰｂ −Ｓｎ合金被覆層中に
添加元素として各々約３％程度以下のＺｎｒ Ｓｂ＋等
の不純物が含まれても本発明の効果は減少するものでは
ない。Furthermore, in the product of the present invention, the surface of the Sn coating layer is chemically treated (dipping or electrolytic) with an aqueous solution of phosphoric acid, phytic acid, chromic acid, etc. for the purpose of improving paint adhesion or further reducing pinholes. There is no problem even if the lower Pb-Sn alloy coating layer contains impurities such as Znr, Sb+, etc. in an amount of about 3% or less each as an additive element, the effect of the present invention will be reduced. isn't it.
同、本発明の製品は、アルコール燃料或いはアルコール
含有燃料に対する燃料容器の素材として使用される場合
に優れた効果を発揮するが、通常のガンリンを主体とす
る燃料を対象とした燃料容器用素材としであるいは特に
高い耐食性の要求される場合の材料上して使用しても勿
論構わない。Similarly, the product of the present invention exhibits excellent effects when used as a material for fuel containers for alcohol fuel or alcohol-containing fuel; Of course, it may also be used as a material when particularly high corrosion resistance is required.
Claims (1)
の片面上または両面上ＫＳｎ金層破覆被覆層する耐食性
表面処理鋼板ざ゛Corrosion-resistant surface-treated steel sheet with broken coating layer of KSn gold layer on one side or both sides of the coating layer mainly composed of Pb7Sn alloy coating layer on the steel plate surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21144482A JPS59104496A (en) | 1982-12-03 | 1982-12-03 | Corrosion-resistant surface-treated steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21144482A JPS59104496A (en) | 1982-12-03 | 1982-12-03 | Corrosion-resistant surface-treated steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59104496A true JPS59104496A (en) | 1984-06-16 |
| JPS6133079B2 JPS6133079B2 (en) | 1986-07-31 |
Family
ID=16606050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21144482A Granted JPS59104496A (en) | 1982-12-03 | 1982-12-03 | Corrosion-resistant surface-treated steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59104496A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986004098A1 (en) * | 1984-12-30 | 1986-07-17 | Nippon Steel Corporation | Coated steel plate for highly corrosion-resistant fuel container and process for its production |
| JPH06293978A (en) * | 1993-04-07 | 1994-10-21 | Nippon Steel Corp | Double layer cold rolled steel sheet for automotive fuel tank excellent in corrosion resistance, deep drawability and soldering property |
| WO1996017100A1 (en) * | 1994-11-26 | 1996-06-06 | Glyco-Metall-Werke Glyco B.V. & Co. Kg | Laminated material and process for producing the same |
| US6146495A (en) * | 1998-08-31 | 2000-11-14 | Nalco Chemical Company | Kraft process for the production of wood pulp by adding a copolymer of 1,2-dihydroxy-3-butene antiscalant |
-
1982
- 1982-12-03 JP JP21144482A patent/JPS59104496A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1986004098A1 (en) * | 1984-12-30 | 1986-07-17 | Nippon Steel Corporation | Coated steel plate for highly corrosion-resistant fuel container and process for its production |
| JPH06293978A (en) * | 1993-04-07 | 1994-10-21 | Nippon Steel Corp | Double layer cold rolled steel sheet for automotive fuel tank excellent in corrosion resistance, deep drawability and soldering property |
| WO1996017100A1 (en) * | 1994-11-26 | 1996-06-06 | Glyco-Metall-Werke Glyco B.V. & Co. Kg | Laminated material and process for producing the same |
| US6146495A (en) * | 1998-08-31 | 2000-11-14 | Nalco Chemical Company | Kraft process for the production of wood pulp by adding a copolymer of 1,2-dihydroxy-3-butene antiscalant |
| US6232419B1 (en) | 1998-08-31 | 2001-05-15 | Nalco Chemical Company | Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| US6235152B1 (en) | 1998-08-31 | 2001-05-22 | Nalco Chemical Company | Process for treating an aqueous liquid containing forming calcium scale salts by adding a copolymer of 1,2-dihdroxy-3-butene antiscalant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6133079B2 (en) | 1986-07-31 |
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