JPH02159395A - Steel sheet for can having superior corrosion resistance and weldability - Google Patents
Steel sheet for can having superior corrosion resistance and weldabilityInfo
- Publication number
- JPH02159395A JPH02159395A JP31455588A JP31455588A JPH02159395A JP H02159395 A JPH02159395 A JP H02159395A JP 31455588 A JP31455588 A JP 31455588A JP 31455588 A JP31455588 A JP 31455588A JP H02159395 A JPH02159395 A JP H02159395A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- corrosion resistance
- weldability
- alloy
- layer
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 24
- 239000010959 steel Substances 0.000 title claims abstract description 24
- 230000007797 corrosion Effects 0.000 title claims abstract description 17
- 238000005260 corrosion Methods 0.000 title claims abstract description 17
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011651 chromium Substances 0.000 claims abstract description 13
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 10
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 11
- 229910000599 Cr alloy Inorganic materials 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052749 magnesium Inorganic materials 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 238000007740 vapor deposition Methods 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- 229910052804 chromium Inorganic materials 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 239000000788 chromium alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、耐食性及び溶接性に優れた缶用鋼板に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a steel plate for cans having excellent corrosion resistance and weldability.
（従来の技術）
缶用鋼板としてクロムメツキ鋼板が広く知られているが
、このような鋼板においては、溶接性に難点があり、こ
れを解消するため、例えば、クロムメツキの下地にＳｎ
、 Ｎｉ等をメツキするかまたは最近ではクロムメツキ
層表面に凹凸を形成することが特開昭６１−２１３３９
９号公報８特開昭６１−２８１８９９号公報等に開示さ
れている。(Prior art) Chrome-plated steel sheets are widely known as steel sheets for cans, but such steel sheets have a problem with weldability, and in order to solve this problem, for example, Sn is added to the base of the chrome plating.
, plating with Ni, etc., or recently, forming unevenness on the surface of the chrome plating layer is disclosed in Japanese Patent Application Laid-Open No. 61-21339.
This method is disclosed in Publication No. 9, Publication No. 8, and Japanese Patent Application Laid-open No. 61-281899.
しかしながらこのような鋼板においても未だ工業的に十
分満足するまでには至っていない。However, even such steel plates have not yet reached a level of industrial satisfaction.
（発明が解決しようとする課題）
本発明は、耐食性及び溶接性に優れた缶用ｗ４仮を提供
することを目的とするものである。(Problems to be Solved by the Invention) An object of the present invention is to provide a W4 temporary for cans that has excellent corrosion resistance and weldability.
（課題を解決するための手段） 本発明の要旨とするところは、鋼板表面にＮｉ。(Means for solving problems) The gist of the present invention is to add Ni to the surface of the steel plate.
Ｃｏ、 Ｔｔ、 Ｆｅ、 Ｚｎ、八ｌ、 Ｍｎ、 Ｍｇ
の中１種又は２種以上を１〜５０％、残Ｃｒからなる合
金層を２０〜１５０■／ｎ（被覆し、上層にクロム酸化
物を３〜２５ ｍｇ／ ｒｄ （Ｃｒ量換算）析出せし
めたことを特徴とする耐食性及び溶接性に優れた缶用鋼
板にある。Co, Tt, Fe, Zn, 8l, Mn, Mg
An alloy layer consisting of 1 to 50% of one or more of the above and the remaining Cr is coated at 20 to 150 μ/n, and 3 to 25 mg/rd (in terms of Cr amount) of chromium oxide is deposited on the upper layer. A steel sheet for cans with excellent corrosion resistance and weldability.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
前記した如き従来提案のクロムメツキ鋼板においては、
クロムメツキ層（クロム金属単味）に多数のピンホール
が発生していることから耐食性に劣るが故に、この難点
を排除すべく、クロムメツキ層の上層にクロム酸化物を
生成せしめているが、十分な封孔作用を得るためには多
量のクロム酸化物を必要とする。In the conventionally proposed chrome-plated steel sheet as described above,
The chrome plating layer (single chromium metal) has a large number of pinholes, resulting in poor corrosion resistance.In order to eliminate this problem, chromium oxide is generated on the upper layer of the chrome plating layer, but A large amount of chromium oxide is required to obtain a sealing effect.
これに対して、本発明に従いクロム合金層を被覆すれば
、ピンホールの発生が殆どなくなり、従って耐食性が向
上するものと認められる。On the other hand, if a chromium alloy layer is coated according to the present invention, the occurrence of pinholes will be almost eliminated, and therefore corrosion resistance will be improved.
又従来提案のクロムメツキ鋼板の溶接性については、上
層のクロム酸化物が導電性を阻害することと相俟って、
下層の金属クロムは融点が約１９００°Ｃであることか
ら、溶接の通電加熱により、金属クロムが十分溶解排除
されないか、あるいは素地鉄中へ拡散せず、溶接電極と
地鉄（原板表面）との接触あるいは地鉄と地鉄の接触が
不十分であることから溶接不良が発生するものであるが
、本発明に従ったクロム合金層は、金属クロムより低融
点の合金成分で合金を構成しており、合金層の融点が金
属クロム単味のメツキ層に比べ低融点になることから溶
接通電加熱により熔解排除あるいは素地鉄中への拡散が
容易になり、電極と地鉄の接触が確実になされることか
ら溶接性が向上するものと認められる。Furthermore, regarding the weldability of conventionally proposed chromium-plated steel sheets, the chromium oxide in the upper layer inhibits conductivity, and
Since the melting point of the lower layer of metallic chromium is approximately 1900°C, the metallic chromium may not be sufficiently dissolved or removed by the electrical heating during welding, or may not diffuse into the base steel, causing the welding electrode and the base steel (surface of the base plate) to Welding defects occur due to insufficient contact between the metal base metal and the base metal, but the chromium alloy layer according to the present invention is composed of alloy components with a lower melting point than metal chromium. Since the melting point of the alloy layer is lower than that of a plating layer made of only metallic chromium, it is easy to melt and displace or diffuse into the base steel by welding current heating, ensuring reliable contact between the electrode and the base steel. It is recognized that this improves weldability.
本発明におけるクロム合金層量としては２０〜１５０■
／ボとする。２０■／イ 未満であると、耐食性等に劣
り、又１５０■／ボ超になると耐食性の向上代が少なく
なり、かえって加工性が低下するので好ましくない。The amount of chromium alloy layer in the present invention is 20 to 150
/Botsuru. If it is less than 20 .mu./a, corrosion resistance etc. will be poor, and if it exceeds 150 .mu./a, there will be less improvement in corrosion resistance, and workability will deteriorate on the contrary, which is not preferable.
クロム合金として、クロム中にＮｉ、 Ｃｏ、 Ｔｉ、
Ｆｅ。As a chromium alloy, Ni, Co, Ti,
Fe.
Ｚｎ、 ＡＬ Ｍｎ＋ Ｍｇの中１種又は２種以上を１
〜５０％含有させるものであるが、含有量１％未満であ
ると、ピンホールを解消する効果が殆ど期待できず、又
５０％超になると、金属クロムによる高耐食性が期待で
きず好ましくない。Zn, AL Mn+ One or two or more of Mg
However, if the content is less than 1%, little effect in eliminating pinholes can be expected, and if it exceeds 50%, high corrosion resistance due to metallic chromium cannot be expected, which is not preferable.
上記の如き合金層の被覆方法としては、例えば蒸着メツ
キ、水溶液メツキ等により被覆することができる。この
ような合金層は、そのままでは良好な塗装耐食性を確保
することが困難であるから、その上層にクロム酸化物を
生成せしめるものであるが、その生成量としては、３〜
２５ｍｇ／ｒｒｒ （クロム量換算）が適当である。３
■／ｒｄ未満であると耐食性が劣り好ましくない。又２
５ｍｇ／ｒｄ超になると耐食性は向上するが、溶接性、
外観が劣り好ましくない。As a method for coating the alloy layer as described above, for example, vapor deposition plating, aqueous solution plating, etc. can be used. Since it is difficult to ensure good paint corrosion resistance with such an alloy layer as it is, chromium oxide is generated on the upper layer, but the amount of chromium oxide generated is 3 to 3.
25 mg/rrr (chromium amount conversion) is appropriate. 3
(2) If it is less than /rd, the corrosion resistance will be poor and undesirable. Also 2
When it exceeds 5 mg/rd, corrosion resistance improves, but weldability and
The appearance is inferior and undesirable.
又クロム酸化物の生成方法としては、例えばＣｒＯ３あ
るいは、重クロム酸塩を主剤とする水溶液中で鋼板（帯
）を陰極として電解することにより生成せしめることが
できる。Further, as a method for producing chromium oxide, for example, it can be produced by electrolyzing in an aqueous solution containing CrO3 or dichromate as a main ingredient, using a steel plate (strip) as a cathode.
（実施例） 次に本発明の実施例を比較例とともに第１表に挙げる。(Example) Next, Examples of the present invention are listed in Table 1 along with comparative examples.
第
表
注１：比較例２は、金属クロム層表面に凹凸（凸部直径
２０ｎｍ、１０′４個／ボ）を形成した。Table Note 1: In Comparative Example 2, irregularities (convex diameter 20 nm, 10'4 protrusions/bore) were formed on the surface of the metal chromium layer.
注２：メッキ原板は０．１７帥厚の鋼板を使用した。Note 2: A steel plate with a thickness of 0.17 mm was used as the plated original plate.
注３：耐食性は、供試材にエポキシフェノール系缶用塗
料を５０ｍｇ／ｄｎ（塗装焼付し、０．５％食塩水中で
１１０°Ｃ１３０分のレトルト処理を施し、塗膜面に発
生したブリスターの程度により評価した（ブリスフ−発
生なし０，１．０ｄｉｄあたり１〜１０ケのブリスター
発生△、１０ケ／ｄｒｒｒ、ｔＨのもの×）。Note 3: Corrosion resistance was measured by applying 50 mg/dn of epoxy phenol can paint to the test material (paint baking and retorting in 0.5% saline solution at 110°C for 130 minutes, and removing blisters that occurred on the paint surface. Evaluation was made based on the degree of blistering (blister-no occurrence 0, occurrence of 1 to 10 blisters per 1.0did △, 10 blisters/drrr, tH ×).
注４＝溶接性は、銅ワイヤーを中間電極とするシーム溶
接機を用い”ζシーム溶接性を評価した。供試材は、事
前に２１０″ＣＸ２０分の空焼をした。溶接条件は、ラ
ンプ代０．６ｍｍ、加圧力４０ｋｇｆ、スピード５０ｍ
ｐｍ。Note 4 = Weldability was evaluated by using a seam welding machine using a copper wire as an intermediate electrode.The test material was pre-baked at 210"C for 20 minutes. The welding conditions are: ramp distance 0.6mm, pressure 40kgf, speed 50m.
p.m.
電流周波数４００Ｈｚとした。評価基準は適正電流範囲
の広さで決定し、下限は溶接部強度、上限はチリ（？８
融した鉄がスプラッシュ状に突出したもの）の発生によ
り決定した（適正電流範囲は２００Ａ以上を実用上問題
なしとした）。The current frequency was set to 400Hz. The evaluation criteria are determined by the width of the appropriate current range, with the lower limit being weld strength and the upper limit being dust (?8
(The appropriate current range is 200 A or more, which is considered to be practically acceptable)
注５：下層金属は水溶液メツキによって被覆した。Note 5: The lower metal layer was coated by aqueous plating.
（発明の効果）
本発明によれば、缶用クロムメツキ鋼板において、耐食
性と溶接性ともに優れた性能を具備させることができ、
工業的に大きな効果を奏することができる。(Effects of the Invention) According to the present invention, a chrome-plated steel sheet for cans can have excellent performance in both corrosion resistance and weldability,
It can have great industrial effects.
Claims (1)
Ｍｇの中１種又は２種以上を１〜５０％、残Ｃｒからな
る合金層を２０〜１５０ｍｇ／ｍ＾２被覆し、上層にク
ロム酸化物を３〜２５ｍｇ／ｍ＾２（Ｃｒ量換算）析出
せしめたことを特徴とする耐食性及び溶接性に優れた缶
用鋼板。Ni, Co, Ti, Fe, Zn, M, Mn, on the steel plate surface.
An alloy layer consisting of 1 to 50% of one or more of Mg and 20 to 150 mg/m^2 of residual Cr is coated, and 3 to 25 mg/m^2 of chromium oxide is added to the upper layer (in terms of Cr content). A steel sheet for cans with excellent corrosion resistance and weldability, characterized by its precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31455588A JPH02159395A (en) | 1988-12-13 | 1988-12-13 | Steel sheet for can having superior corrosion resistance and weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31455588A JPH02159395A (en) | 1988-12-13 | 1988-12-13 | Steel sheet for can having superior corrosion resistance and weldability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02159395A true JPH02159395A (en) | 1990-06-19 |
Family
ID=18054697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31455588A Pending JPH02159395A (en) | 1988-12-13 | 1988-12-13 | Steel sheet for can having superior corrosion resistance and weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02159395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150565A (en) * | 2008-12-24 | 2010-07-08 | Jfe Steel Corp | Surface treated steel sheet, method of manufacturing the same and resin coated steel sheet |
-
1988
- 1988-12-13 JP JP31455588A patent/JPH02159395A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150565A (en) * | 2008-12-24 | 2010-07-08 | Jfe Steel Corp | Surface treated steel sheet, method of manufacturing the same and resin coated steel sheet |
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