JPS6379995A - Steel sheet for can having superior weldability and corrosion resistance - Google Patents
Steel sheet for can having superior weldability and corrosion resistanceInfo
- Publication number
- JPS6379995A JPS6379995A JP22191586A JP22191586A JPS6379995A JP S6379995 A JPS6379995 A JP S6379995A JP 22191586 A JP22191586 A JP 22191586A JP 22191586 A JP22191586 A JP 22191586A JP S6379995 A JPS6379995 A JP S6379995A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- plating
- alloy
- corrosion resistance
- weldability
- 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 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 239000011651 chromium Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910018104 Ni-P Inorganic materials 0.000 claims abstract description 10
- 229910018536 Ni—P Inorganic materials 0.000 claims abstract description 10
- 229910000521 B alloy Inorganic materials 0.000 claims abstract description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 16
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 229910052796 boron Inorganic materials 0.000 abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 5
- UJRBOEBOIXOEQK-UHFFFAOYSA-N oxo(oxochromiooxy)chromium hydrate Chemical compound O.O=[Cr]O[Cr]=O UJRBOEBOIXOEQK-UHFFFAOYSA-N 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 1
- 239000011135 tin Substances 0.000 description 60
- 238000007747 plating Methods 0.000 description 36
- 238000003466 welding Methods 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910001096 P alloy Inorganic materials 0.000 description 8
- 229910052718 tin Inorganic materials 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- RCIVOBGSMSSVTR-UHFFFAOYSA-L stannous sulfate Chemical compound [SnH2+2].[O-]S([O-])(=O)=O RCIVOBGSMSSVTR-UHFFFAOYSA-L 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 229910000375 tin(II) sulfate Inorganic materials 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、溶接性と耐食性に優れた缶用鋼板に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a steel sheet for cans having excellent weldability and corrosion resistance.
溶接性に優れた缶用鋼板としては、例えば、Ｎｉ又はＮ
ｊ、 −Ｐ合金皮膜を施し、その上層に粗大粒Ｓｎメ
ッキを施し、更にその上層に金属クロム及びクロム水和
酸化物を生成せしめた鋼板（特開昭６０−６７６７７号
公報）、又特開昭６０＝１８４６８８号公報の如く、鋼
板表面にＳｎ−Ｆｅ−Ｎｉの３元合金層を形成し、その
上層に島状のＳｎを形成すること、更に特開昭６０−２
０８４９４号公報のごとく、鋼板表面に多数の凸部を有
するＳｎ層を施し、その上層にクロメ−１−皮膜を形成
させたものが開示されている。As a steel sheet for cans with excellent weldability, for example, Ni or N
j, a steel sheet coated with a -P alloy film, the upper layer of which is coated with coarse grained Sn plating, and metal chromium and hydrated chromium oxide formed on the upper layer (Japanese Patent Application Laid-Open No. 60-67677); As disclosed in Japanese Patent Application Laid-open No. 184688, a ternary alloy layer of Sn-Fe-Ni is formed on the surface of a steel plate, and island-like Sn is formed on the upper layer, and furthermore, Japanese Patent Application Laid-Open No. 60-2
No. 08494 discloses a steel plate in which an Sn layer having a large number of convex portions is formed on the surface of the steel sheet, and a chrome-1 coating is formed on the top layer.
本発明は、上記のごとき溶接缶用鋼板より優れたものを
提供することを目的とするものである。The object of the present invention is to provide a steel plate for welded cans that is superior to the above-mentioned steel plates for welded cans.
本発明は、鋼板表面にＳｎ−Ｆｅ−Ｎｉ−Ｐ合金又は、
Ｓ ｎ −Ｆ ｅ −Ｎ ｊ、 −Ｂ合金を生成し、そ
の上層にフリーＳｎを生成し、更にその上層にクロム水
和酸化物を生成せしめた溶接性と耐食性に優れた缶用鋼
板及び鋼板表面にＳｎ−Ｆｅ−Ｎｊ−Ｐ合金又は、Ｓｎ
−Ｆｅ−Ｎｊ−Ｂ合金を生成し、その上層にフリーＳｎ
を生成し、更にその上層に金属クロム、クロム水和酸化
物を順次生成せしめた溶接性と耐食性に優れた缶用鋼板
に関するものである。The present invention provides Sn-Fe-Ni-P alloy or
A steel sheet for cans and a steel sheet having excellent weldability and corrosion resistance, in which a S n -F e -N j, -B alloy is formed, free Sn is formed in the upper layer, and chromium hydrated oxide is further formed in the upper layer. Sn-Fe-Nj-P alloy or Sn
-Produces Fe-Nj-B alloy, with free Sn on top layer
The present invention relates to a steel plate for cans having excellent weldability and corrosion resistance, in which metal chromium and chromium hydrated oxide are successively formed on the top layer.
−Ｂ合金を施し、その上層にＳｎメッキ及び／又は粗大
粒Ｓｎメッキを施し、次いでリフロー処理を施すことに
より生成させることができる。-B alloy, Sn plating and/or coarse grain Sn plating is applied to the upper layer thereof, and then reflow treatment is performed.
Ｎｊ−Ｂ又はＮ ｉ −Ｐ合金皮膜量として、５〜２０
０ｍｇ／賛で耐食性を向上することができ、Ｎ１−Ｐ又
はＮ１−Ｂ合金皮膜中のＰ景又はＢ量としては、３〜１
５％で溶接性を向上することができる。３％未満では、
リフローに際し前記合金にするとき、更に塗装焼付時の
加熱により過度に合金化を促進し、その上層のフリーＳ
ｎが残留せず溶接性能を低下させ、又１−５％超では、
そういったＮｊ−Ｂ又はＮｉ −Ｐ層の形成自体が難し
く実用的でなく好ましくない。Ｎ１−Ｂ又はＮ ３−−
Ｐ合金皮膜量が２００ ｍ ｇ ／ ｒｒｒを超えると
りフロー等による加熱で十分Ｓｎ−Ｎｉ−Ｐ”（Ｂ）の
十分な合金化が困難になり好ましくない。The amount of Nj-B or Ni-P alloy film is 5 to 20
Corrosion resistance can be improved with 0mg/application, and the amount of P or B in the N1-P or N1-B alloy film is 3 to 1
Weldability can be improved at 5%. Below 3%,
When forming the above-mentioned alloy during reflow, the alloying is excessively promoted by heating during paint baking, and the upper layer of free S
n does not remain and deteriorates welding performance, and if it exceeds 1-5%,
Forming such a Nj-B or Ni-P layer itself is difficult, impractical, and undesirable. N1-B or N3--
If the amount of the P alloy film exceeds 200 mg/rrr, it becomes difficult to sufficiently alloy Sn--Ni--P'' (B) by heating by means of a flow etc., which is not preferable.
次に、前記のごとく、Ｎ１−Ｂ又はＮ ｉ −Ｐ合金皮
膜層」二に施すＳｎメッキは、一般に知られている工業
用Ｓｎメッキ浴例えば、フェロスタン浴による電気メッ
キを採用すれば、このようなＳｎメッキにおいては、１
００００倍の顕微鏡で観察すると、はとんど結晶粒は確
認できないくらい緻密にメッキされる。従ってＳｎメッ
キ量が例えば０．１ｇ／ｒｒｒ未滴の場合、又はリフロ
ー処理時、塗装焼付時の熱負荷が大なる場合、リフロー
処理時、塗装焼付時の加熱により、Ｎｉ−１３又はＮ」
−Ｐ合金皮膜とＳｎメッキ金属もしくはＮｉ −Ｂ又は
Ｎ１−Ｐ合金皮膜とＳｎメッキ金属と地鉄が多量に合金
化され、フリーＳｎがほとんど残留しなくなる。フリー
Ｓｎが十分存在する場合は、溶接時の加熱により、導電
性がよく融点の低いＳｎが金属クロム等に先立って融解
し、溶接圧力により、溶接部から排出され、このとき上
層の金属りロム等も一緒に排出されるものであるが、上
記のごとく、フリーＳｎがほとんど残留していない場合
は、溶解排出されるＳｎがなく、金属クロム等の排出作
用もなく、溶接性を損うものである、このようなことか
らＳｎメッキ量としては０．１ｇ７、ｆ以」二が好まし
く、上限は５ 、６ ｇ ／ ｍが適当である。Ｓｎメ
ッキ量が０ 、１ ｇ ／ ｍ未満では、リフロー時あ
るいは製缶時の塗装焼付により合金層が多量になり、リ
フローＳｎがほとんど残留せず、溶接性の向］二が少な
く、５．６ｇ／ｍ超では、溶接性の向−４−より、経済
的損失が大きく好ましくない。Next, as mentioned above, the Sn plating applied to the N1-B or Ni-P alloy film layer 2 can be performed by electroplating using a generally known industrial Sn plating bath, such as a ferrostane bath. In Sn plating, 1
When observed under a microscope with a magnification of 0,000 times, the plating is so dense that no crystal grains can be seen. Therefore, if the amount of Sn plating is, for example, 0.1 g/rrr, or if the heat load during reflow treatment or paint baking is large, the heating during reflow treatment or paint baking may cause Ni-13 or N.
-P alloy film, Sn plating metal or Ni-B or N1-P alloy film, Sn plating metal, and base iron are alloyed in large quantities, and almost no free Sn remains. If there is sufficient free Sn, Sn, which has good conductivity and a low melting point, will melt before the metal chromium etc. due to the heating during welding, and will be discharged from the welded area by the welding pressure. However, as mentioned above, if there is almost no free Sn remaining, there is no Sn to be dissolved and discharged, and there is no discharge effect of metallic chromium, etc., which impairs weldability. Therefore, the amount of Sn plating is preferably 0.1 g/m or more, and an appropriate upper limit is 5.6 g/m. If the Sn plating amount is less than 0.1 g/m, a large amount of alloy layer will be formed due to paint baking during reflow or can manufacturing, almost no reflow Sn will remain, and the weldability will be less than 5.6 g. If it exceeds /m, the economic loss will be greater than the weldability -4-, which is not preferable.
Ｓｎメッキ金属を粗大粒にしかつ、又Ｓｎメッキ層とし
て、局部的なＳｎ付着量を平均付着量より大にすること
により、Ｎ ｊ、 −Ｂ又はＮ１−Ｐ合金層への何着が
粗くなり、リフロー処理時、塗装焼付時の熱影響は、Ｓ
ｎ粒の下部にとどまり、従ってＳｎの合金化も下部にと
どまって、上部はフリーＳｎとして残留し易くなり、溶
接時にこのフリーＳｎが、金属クロム等に先立って融解
し、溶＝４−
接部位から金属クロム等を排出し、かつフリーＳｎとし
て残留するためＮ ｊ、 −Ｒ又はＮ ｉ −Ｐ合金層
とＳｎもしくはＮ ｉ −Ｂ又はＮ１−Ｐ合金層とＳｎ
と地鉄の合金も少ないことから溶接性を向上することが
できるものである。By making the Sn plating metal coarse grains and making the local Sn adhesion amount larger than the average adhesion amount as the Sn plating layer, the amount of adhesion to the Nj, -B or N1-P alloy layer becomes coarse. , the heat effect during reflow processing and paint baking is S.
Sn remains in the lower part of the n grain, and therefore alloying of Sn also remains in the lower part, and the upper part tends to remain as free Sn. During welding, this free Sn melts before metal chromium, etc., and welding = 4- Welding area In order to discharge metal chromium etc. from the chromium and remain as free Sn, the Nj, -R or Ni-P alloy layer and Sn or the Ni-B or N1-P alloy layer and Sn
Since there is less alloy in the base steel, weldability can be improved.
しかして、このＳｎメッキ金属は、電析Ｓｎの結晶粒径
がＯ０ｉ〜３μに粗大化しておれば、十分目的を達する
ことができ、結晶粒が約０．１−μ以下では、例えば、
Ｓｎ付着景が０ 、１ ｇ ／ ｒｄ未滴の場合、リフ
ロー時或いは、約２１０”ＣＸ２０分位の空焼により、
合金層が多量になりフリーＳｎがほとんど残留せず、溶
接性の向」−が少ない、又結晶粒が約３μ以上では溶接
性の問題に対しては、十分目的を達することができるが
、Ｓｎメッキ層の素地との密着性及びメッキ外観が悪く
なるので好ましくない。However, this Sn-plated metal can sufficiently achieve its purpose if the crystal grain size of the electrodeposited Sn is coarsened to O0i ~ 3μ, and if the crystal grain is about 0.1-μ or less, for example,
If the Sn adhesion is 0 or 1 g/rd, then during reflow or dry firing for about 210"C x 20 minutes,
When the alloy layer becomes large and almost no free Sn remains, there is little improvement in weldability.Also, if the grain size is about 3μ or more, the purpose can be sufficiently achieved for weldability problems, but Sn This is not preferable because it deteriorates the adhesion of the plating layer to the substrate and the appearance of the plating.
粗大粒Ｓｎメッキを施す方法としては、例えば、硝酸第
１ Ｓ ｎ ４０ ｇ ／ Ｑ 、硫酸８０ ｇ ／
Ｑ 、浴温３０℃、電流密度５〜２０ Ａ ／ ｄ ｍ
で確実にメッキすることができる。更に本発明において
は、」ニ記のごとき、粗大粒Ｓｎを施した溶接缶用鋼板
においては、表面光沢、耐食性を向上するため粗大粒Ｓ
ｎメッキ層上に通常の緻密なＳｎメッキを施し、その
緻密なメッキ量としては、０．１〜５．６ｇ ／ ｒｌ
で十分目的を達することができる。As a method for applying coarse grained Sn plating, for example, nitric acid 1Sn 40 g/Q, sulfuric acid 80 g/Q
Q, bath temperature 30℃, current density 5-20 A/dm
can be plated reliably. Furthermore, in the present invention, in the steel plate for welded cans coated with coarse grained Sn as described in item 2, coarse grained S is added to improve surface gloss and corrosion resistance.
Normal dense Sn plating is applied on the N plating layer, and the amount of dense plating is 0.1 to 5.6 g/rl.
is sufficient to reach the goal.
このようにして、通常の平坦なＳｎメッキ及び／又はオ
■大粒Ｓｎメッキを施した後、次いでリフロー処理を施
すものであるが、このリフロー処理が本発明の重要な要
件である。このリフロー処理により、粗大粒Ｓｎ又は通
常のＳｎメッキ又は粗大粒Ｓｎメッキに通常Ｓｎメッキ
を加味したＳｎメッキ層の下層部分がＮｉ、Ｆｅ、Ｓｎ
、Ｐ又はＮｉ、Ｆｅ、Ｓｎ、Ｂよりなる緻密合金属を形
成し、Ｓ ｎ層の上部又は、粗大粒Ｓｎ層の上部をフリ
ーＳ ｎとして残留させると共に、粗大粒Ｓｎメッキの
析出していない部位においては、Ｎ ３．− Ｂ又はＮ
１−ＰとＦｅの拡散層が生成する。この拡散層及びＮｉ
、Ｆｅ、Ｓｎ、Ｐ又はＮｉ、Ｆｅ。After applying ordinary flat Sn plating and/or large-grain Sn plating in this manner, reflow treatment is then performed, and this reflow treatment is an important requirement of the present invention. Through this reflow treatment, the lower part of the Sn plating layer, which is made by adding coarse grained Sn or regular Sn plating or coarse grained Sn plating and regular Sn plating, becomes Ni, Fe, Sn.
, P or Ni, Fe, Sn, and B are formed, and the upper part of the Sn layer or the upper part of the coarse-grained Sn layer remains as free Sn, and no coarse-grained Sn plating is precipitated. At the site, N3. - B or N
A diffusion layer of 1-P and Fe is generated. This diffusion layer and Ni
, Fe, Sn, P or Ni, Fe.
Ｓｎ、Ｂより成る緻密な合金層の生成は溶接性向」；の
寄与は少ないが、缶外面側での耐糸錆性及び缶内面側で
の塗膜下腐食（耐ＵＣＣ）性を向上させ、良好な溶接性
とあいまって、溶接缶用鋼板としての具備させることが
できるものである。Although the formation of a dense alloy layer consisting of Sn and B has a small contribution to welding properties, it improves thread rust resistance on the outside of the can and undercoat corrosion (UCC) resistance on the inside of the can, Combined with good weldability, it can be used as a steel plate for welded cans.
しかして、そのリフロー処理としては、２３１〜３００
℃で０．５秒〜数秒で、上記のとときＳｎメッキ層の下
層部分を合金化させ、かつ、−二層はフリー錫として残
存するため、前記のごとく、溶接性を向」ニさせるもの
である。However, as for the reflow process, 231 to 300
℃ for 0.5 seconds to several seconds, the lower part of the Sn plating layer is alloyed, and the -2 layer remains as free tin, which improves weldability as described above. It is.
このようにして生成した合金層は、溶接に先立って施す
空焼処理（通常約２１０℃Ｘ２０分位）により、生長す
ることはほとんどなく、従って、溶接性、耐食性ともに
優れたものとなる。The alloy layer produced in this way hardly grows due to the dry firing treatment (usually about 210° C. for about 20 minutes) performed prior to welding, and therefore has excellent weldability and corrosion resistance.
このように鋼帯のＳｎメッキ及び／又は粗大粒Ｓｎメッ
キ後リフロー処理し、その後、電解クロム酸処理或いは
電気ブリキで実用されている重クロム酸ナトリウムを主
体とする浴中での陰極電解処理を行なうが、この皮膜は
、金属クロム量としてＯ〜３０ ｍ ｇ ／ ｍ ＋そ
の上層にクロム水和酸化物（酸化物中のＣｒ量）２〜３
０ ｎ１ｇ ／イを生成せしめることにより、溶接缶用
鋼板とするものである。In this way, the steel strip is subjected to Sn plating and/or reflow treatment after coarse-grained Sn plating, and then electrolytic chromic acid treatment or cathodic electrolysis treatment in a bath mainly composed of sodium dichromate, which is used in electric tinplates. However, this film has an amount of metallic chromium of 0 to 30 mg/m + a chromium hydrated oxide (amount of Cr in the oxide) on the upper layer of 2 to 3.
By generating 0 n1g/a, a steel plate for welded cans is produced.
金属クロム量が３０ ｍ ｇ ／ ｒｌを超えても耐食
性能上の格別の利益は見出せず、溶接性能が低下する不
利益があり、又クロム水和酸化物皮膜中のクロム量が３
０ ｍ ｇ ／ ｒ＋（を超えると、メッキ板の表面外
観が黄色味を帯び商品価値を害するとともに塗料密着性
、溶接性能書する等好ましくない。Even if the amount of metallic chromium exceeds 30 mg/rl, no particular benefit in terms of corrosion resistance can be found, and there is a disadvantage of reduced welding performance.
If it exceeds 0 mg/r+(, the surface appearance of the plated plate will take on a yellowish tinge, impairing its commercial value, as well as impairing paint adhesion and welding performance, etc.), which is undesirable.
このようにして、リフロー処理を施した後、その上層に
前記のごとくクロム酸処理層を形成させるものである。After performing the reflow treatment in this manner, the chromic acid treatment layer is formed on top of the reflow treatment as described above.
次に本発明の実施例を比較例とともに挙げる。Next, examples of the present invention will be listed together with comparative examples.
＝８−
溶接性：銅ワイヤーを中間電極とするシーム溶接機を用
いてシーム溶接性を評価した。=8- Weldability: Seam weldability was evaluated using a seam welder using a copper wire as an intermediate electrode.
供試材は、事前に２１０℃×２０分の
空焼を施した、溶接条件は、ラップ代
０ 、６ ｍ ｍ 、加圧力４０ Ｋ ｇ ｆ 、スピ
ード５０ｍｐｍ、電流周波数４００ Ｉ−Ｉ ｚ 。The test materials were preheated at 210° C. for 20 minutes, and the welding conditions were: lap thickness 0, 6 mm, pressing force 40 Kgf, speed 50 mpm, and current frequency 400 I-Iz.
評価基準は、適正電流範囲の広さで決定。The evaluation criteria is determined by the width of the appropriate current range.
下限溶接部強度、−！−限はチリ（溶融した鉄がスプラ
ッシュ状に突出したもの）の発生により規定した。（適
正電流範囲は２００Ａ以上を実用」二問題無しとした。Lower limit weld strength, -! - The limit was determined by the occurrence of dust (molten iron protruding in the form of a splash). (The appropriate current range is 200A or more for practical use.) There were no problems.
）耐食性ｅ ＵＣＣ性（腐食ｒ１１ｍ／ｍ）＋メッキ鋼
板にエポキシフェノール系塗料を５５ｍｇ／ ｄ ｍ塗
布し、２１０ ’ＣＸ １．０分焼付後、表面にクロス
状、巾１０μ、深さ１５μのナイフカッ１へを入れ、ク
エン酸１．５％９食塩１．５％からなる腐食液中に５０
℃×３日間浸漬しカッ１〜部の錆の拡がりを調査した。) Corrosion resistance e UCC property (corrosion r 11 m/m) 1 and 50% in a caustic solution consisting of 1.5% citric acid and 1.5% common salt.
The samples were immersed at ℃ for 3 days, and the spread of rust in the first part was investigated.
Ｎ１−Ｂメッキ：塩化ニッケルＮ１ＣＱ２・６ Ｈｚ
０ ３０ ｇ／Ｑ、エチレンジアミンＨ２ＮＣＨ２ＮＨ
２６０ｇ ／ Ｑ 、水酸化ナトリウムＮ ａ ＯＨ４
，５ｇ／Ｑ、ナトリウムホロハイドライドＮａＢＨ，０
，６ｇ／Ｑ、（１）浴１１Ｌ成で浴温８５℃、１〜１０
秒浸漬してメッキした。N1-B plating: Nickel chloride N1CQ2・6 Hz
0 30 g/Q, ethylenediamine H2NCH2NH
260g/Q, Sodium hydroxide Na OH4
,5g/Q, Sodium Holohydride NaBH,0
, 6g/Q, (1) 11L bath, bath temperature 85℃, 1-10
It was plated by dipping for seconds.
Ｎ１−Ｐ合金メッキ： Ｎ ｊ、 Ｓ ０４・６Ｉ（２
０２４，５ｇ／ Ｑ 。N1-P alloy plating: N j, S 04/6I (2
024.5g/Q.
Ｎ１ＣＱ２・６Ｉ−Ｉ２０ ４５ ｇ／ Ｑ 。N1CQ2・6I-I20 45 g/Q.
Ｈ２ＢＯ３３０ｇ＃、、Ｈ３ＰＯ３１ ０ｇ ／ Ｑのメッキ浴中で電気メッキを施した。H2BO330g#,,H3PO31 Electroplating was performed in a plating bath of 0 g/Q.
粗大粒Ｓｎメッキ：硫酸第１錫 ４０ｇ／Ｑ、硫酸 ｓ
ｏｇ／Ｑ、浴温 ３０℃、電流密度 １．５Ａ／ｄイ１
゛拍施。Coarse grain Sn plating: stannous sulfate 40g/Q, sulfuric acid s
og/Q, bath temperature 30℃, current density 1.5A/di1
゛Applause.
通常のＳｎメッキニニ一般用いられているフェロスタン
浴にり実施。A ferrostane bath, which is commonly used for ordinary Sn plating, is carried out.
ク ロ ム 処理ニ一般に用いられているメッキ浴で陰
極電解により実施。Chromium treatment is carried out by cathodic electrolysis in a commonly used plating bath.
本発明はかくすることにより、溶接性を向上するととも
に耐食性も向上させることができ、溶接＝１１−
缶用鋼板として、優れた効果をもたらすことかできる。By doing so, the present invention can improve weldability and also improve corrosion resistance, and can bring about excellent effects as a welded steel plate for cans.
ｄヲdwo
Claims (2)
−Ｆｅ−Ｎｉ−Ｂ合金を生成し、その上層にフリーＳｎ
を形成し、更にその上層にクロム水和酸化物を生成せし
めた溶接性と耐食性に優れた缶用鋼板。(1) Sn-Fe-Ni-P alloy or Sn
-Produces a Fe-Ni-B alloy, with free Sn in the upper layer.
A steel plate for cans with excellent weldability and corrosion resistance, which has a chromium hydrated oxide formed on top of it.
−Ｆｅ−Ｎｉ−Ｂ合金を生成し、その上層にフリーＳｎ
を形成し、更にその上層に金属クロム、クロム水和酸化
物を順次生成せしめた溶接性と耐食性に優れた缶用鋼板
。(2) Sn-Fe-Ni-P alloy or Sn
-Produces a Fe-Ni-B alloy, with free Sn in the upper layer.
A steel plate for cans that has excellent weldability and corrosion resistance, with metal chromium and chromium hydrated oxide sequentially formed on top of this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22191586A JPS6379995A (en) | 1986-09-22 | 1986-09-22 | Steel sheet for can having superior weldability and corrosion resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22191586A JPS6379995A (en) | 1986-09-22 | 1986-09-22 | Steel sheet for can having superior weldability and corrosion resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6379995A true JPS6379995A (en) | 1988-04-09 |
Family
ID=16774152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22191586A Pending JPS6379995A (en) | 1986-09-22 | 1986-09-22 | Steel sheet for can having superior weldability and corrosion resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6379995A (en) |
-
1986
- 1986-09-22 JP JP22191586A patent/JPS6379995A/en active Pending
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