JPH068513B2 - Hollow steel plate - Google Patents
Hollow steel plateInfo
- Publication number
- JPH068513B2 JPH068513B2 JP23778786A JP23778786A JPH068513B2 JP H068513 B2 JPH068513 B2 JP H068513B2 JP 23778786 A JP23778786 A JP 23778786A JP 23778786 A JP23778786 A JP 23778786A JP H068513 B2 JPH068513 B2 JP H068513B2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- plating
- enamel
- alloy
- present
- 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.)
- Expired - Lifetime
Links
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
- Physical Vapour Deposition (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は、ホーロー鋼板、特にアルミホーロー鋼板に関
する。TECHNICAL FIELD The present invention relates to a enamel plate, particularly an aluminum enamel plate.
(従来の技術) 従来、ホーロー製品としては、鋼板に直接ホーロー掛け
する鉄ホーローが一般的であったが、白色が十分に出な
いため2回掛けが普通であり、焼成温度も約850℃と高
い。そのため近年では、Aめっき鋼板を下地とするア
ルミホーローもしばしば行われるようになった。(Prior Art) Conventionally, as an enamel product, an iron enamel that directly enameles a steel plate was generally used, but it is usually bifurcated because the white color does not sufficiently appear, and the firing temperature is about 850 ° C. high. For this reason, in recent years, aluminum enamel with an A-plated steel sheet as a base has been often used.
アルミホーローの利点としては、前処理が脱脂のみでよ
い。1回掛けホーローでよい、焼成温度が低い(530〜5
60℃)ので焼成ひずみをを小さくできる、等が挙げられ
る。The advantage of aluminum enamel is that the pretreatment is only degreasing. One-time enamel is enough, baking temperature is low (530-5
60 ° C), so that firing strain can be reduced.
通常、このようなAめっき鋼板としては、溶融Aめ
っき鋼板が用いられていたが、溶融めっきであるため次
のような欠点があった。Usually, a hot-dip A-plated steel sheet is used as such an A-plated steel sheet, but since it is hot-dip galvanized, it has the following drawbacks.
恒温でめっきするため、めっき時に下地鉄とめっき層
との間にFe−A合金層が形成され、加工性が悪くな
る。Since the plating is performed at a constant temperature, an Fe-A alloy layer is formed between the base iron and the plating layer during plating, resulting in poor workability.
薄目付が難しく、また外観が良くない。Light weight is difficult and the appearance is not good.
一般にA系合金めっき鋼板は、優れた耐熱性を有す
る。しかし上述のようにA系合金めっき鋼板をアルミ
ホーロー鋼板の母材として一般的に使用するにはまだ解
決すべき多くの問題が残されている。Generally, an A-based alloy plated steel sheet has excellent heat resistance. However, as described above, many problems still remain to be solved before the A-based alloy plated steel sheet is generally used as a base material of an aluminum enamel steel sheet.
(発明が解決しようとする問題点) ここに、本発明者らは、従来の溶融めっきに代えて、溶
融塩電解めっきによるAまたはA合金めっき鋼板の
ホーロー母材への適用を検討したところ、めっき後の外
観および加工性は非常に良好であるが、今度はホーロー
層の焼成時に、A−Fe合金層が形成されてしまい、剥
離が生じることが判明した。(Problems to be Solved by the Invention) Here, the present inventors have examined the application of an A or A alloy-plated steel sheet by molten salt electrolytic plating to a enamel base material instead of the conventional hot dip plating, It was found that the appearance and workability after plating were very good, but this time, when the enamel layer was fired, an A-Fe alloy layer was formed and peeling occurred.
本発明の目的は、A又はA合金めっき鋼板を母材と
しながら、AまたはA合金めっき時にはもちろんホ
ーロー層の焼成時にもめっき界面にFe−A合金層の形
成されない、つまりホーロー密着性にすぐれたホーロー
鋼板を提供することである。The object of the present invention is to form an Fe or A alloy plated steel sheet as a base material, and not to form an Fe-A alloy layer at the plating interface during A or A alloy plating and also during firing of the enamel layer, that is, to provide excellent enamel adhesion. It is to provide a enamel steel plate.
(問題点を解決するための手段) そこで、かかる問題点を解決するため種々検討した結
果、鋼板上に予め、Ni、Cr、およびCoの少なくとも1種
をめっきした後、溶融塩電解によるAまたはA合金
めっきを施こした2層めっき鋼板を母材とすれば、A
またはA合金めっき時にはもちろん、ホーロー焼成時
にもFe−A合金層の形成を抑制できることが見い出さ
れた。抑制効果としては、Niが最も優れているがCo、Cr
においてもほとんど同様の効果が得られる。(Means for Solving the Problems) Then, as a result of various studies for solving the problems, as a result of preliminarily plating at least one of Ni, Cr, and Co on the steel sheet, A by molten salt electrolysis or If the base material is a double-layer plated steel sheet that has been subjected to A alloy plating, A
It was also found that the formation of the Fe-A alloy layer can be suppressed not only during the A alloy plating but also during the enamel firing. Ni has the best suppression effect, but Co and Cr
Also in, almost the same effect can be obtained.
よって、本発明の要旨とするところは、鋼板側より第一
層として、Ni、Cr、およびCoのうち少なくとも一種以上
の元素から成るめっき層、第二層としてめっき付着量5
〜100g/m2のAまたはA合金めっき層、そして第三
層として、ホーロー層を有することを特徴とするホーロ
ー鋼板である。Therefore, the gist of the present invention is that, from the steel sheet side, the first layer is a plating layer composed of at least one element of Ni, Cr, and Co, and the second layer is a coating adhesion amount of 5
It is an enamel steel plate characterized by having an A or A alloy plating layer of up to 100 g / m 2 and an enamel layer as a third layer.
本発明の好適態様においては前記第一層のめっき付着量
は0.5〜20g/m2である。In a preferred embodiment of the present invention, the coating weight of the first layer is 0.5 to 20 g / m 2 .
第一層のめっきは一般には水溶液電解めっきにより行わ
れるが、その他無電解めっき法、真空蒸着法等であって
も特に制限はない。母材からのFeの拡散が防止でき、か
つ、次に行なうAまたはA合金めっき層との密着性
が確保できれば特に制限はない。The plating of the first layer is generally performed by aqueous solution electroplating, but there is no particular limitation even if it is an electroless plating method, a vacuum deposition method, or the like. There is no particular limitation as long as the diffusion of Fe from the base material can be prevented and the adhesion with the A or A alloy plating layer to be performed next can be secured.
第二層のめっきは、好適態様では溶融塩電解めっきによ
るものであるが、本発明にあっては第一層めっきとして
Ni、Cr、およびCoの少なくとも1種のめっき層を形成す
るためFeの拡散が防止できることから、場合によっては
溶融Aめっきを行ってもよい。その他、Aめっきを
行う方法としては、真空蒸着法、有機電解法等があり、
特に限定はされない。The plating of the second layer is performed by molten salt electrolytic plating in a preferred embodiment, but in the present invention, it is used as the first layer plating.
Since the diffusion of Fe can be prevented by forming at least one plating layer of Ni, Cr, and Co, hot-dip A plating may be performed in some cases. Other methods for performing A plating include a vacuum deposition method and an organic electrolysis method.
There is no particular limitation.
本発明において利用できるA合金は、慣用のアルミホ
ーロー鋼板に使用しているものであれば特に制限されな
いが、そのすぐれた加工性、耐食性の点からA−Mn(M
n:1〜30重量%)合金が好ましい。The A alloy that can be used in the present invention is not particularly limited as long as it is used for a commonly used aluminum enamel plate, but from the viewpoint of its excellent workability and corrosion resistance, A-Mn (M
(n: 1 to 30% by weight) alloy is preferred.
なお、本発明にかかるホーロー鋼板の鋼材は、通常の炭
素鋼から10%Crの組成を有する低合金鋼等多くのものが
包含され、特に制限されない。Note that the steel material of the enamel steel sheet according to the present invention includes many materials such as low carbon alloy steel having a composition of 10% Cr to ordinary carbon steel, and is not particularly limited.
(作用) 第1図は、本発明にかかるホーロー鋼板の模式的断面図
である。(Operation) FIG. 1 is a schematic sectional view of the enamel steel plate according to the present invention.
図中、鋼板1にはNi、CrおよびCoの少なくとも一種より
成るめっき層2が設けられており、そのうえにAまた
はA合金めっき層3が設けられている。本発明におい
て、第二層めっき付着量は5〜100g/m2に制限される
が、これは5g/m2未満ではホーロー密着性が不良となっ
てしまい、一方100g/m2超では経済的でないためであ
る。In the figure, a steel plate 1 is provided with a plating layer 2 made of at least one of Ni, Cr and Co, and an A or A alloy plating layer 3 is provided thereon. In the present invention, the second layer coating weight is limited to 5 to 100 g / m 2, which becomes enamel adhesiveness and poor is less than 5 g / m 2, whereas economical in 100 g / m 2 greater Because it is not.
また、第一層のめっきの付着量は、0.5g/m2未満ではFe
とAとの合金層形成を抑制できない。また厚さ20g/m2
超めっきしても著しい効果がなく、経済的でない。よっ
て、本発明の好適態様では第一層のめっき付着量を0.5
〜20g/m2に制限する。In addition, if the coating weight of the first layer is less than 0.5 g / m 2 , Fe
It is impossible to suppress the formation of the alloy layer of A and A. Also thickness 20g / m 2
Superplating has no significant effect and is not economical. Therefore, in the preferred embodiment of the present invention, the coating amount of the first layer is 0.5
Limit to ~ 20g / m 2 .
なお、A合金としてA−Mn合金を利用する場合、そ
のMn含有量は、本発明において特に制限されないが、好
適態様としては、10〜30wt%に制限される。これは、10
wt%未満では一般に外観不良となるためであり、一方30
wt%超では加工性が不良となるからである。When an A-Mn alloy is used as the A alloy, its Mn content is not particularly limited in the present invention, but in a preferred embodiment, it is limited to 10 to 30 wt%. This is 10
This is because if the content is less than wt%, the appearance will generally be poor.
This is because if it exceeds wt%, the workability becomes poor.
なお、ホーロー層4は公知の適宜方法により焼成すれば
よく、特に制限はされない。The enamel layer 4 may be fired by a known appropriate method and is not particularly limited.
かくして、本発明によれば、外観、加工性ともにすぐ
れ、ホーロー密着性が著しく改善されたアルミホーロー
鋼板が得られる。Thus, according to the present invention, an aluminum enamel plate having excellent appearance and workability and having a significantly improved enamel adhesion can be obtained.
次に、実施例によって本発明をさらに詳細に説明する。Next, the present invention will be described in more detail by way of examples.
実施例 第1表に示すめっき条件で冷延鋼板(JIS SPCD)に0.2
〜20mg/m2のNi、CrまたはCoめっきを行った。Example 0.2 was applied to cold rolled steel sheet (JIS SPCD) under the plating conditions shown in Table 1.
To 20 mg / m 2 of Ni, were Cr or Co plating.
次いで、この第一層めっき層のうえにAまたはA−
Mn合金めっきを行ったのであるが、そのときのAめっ
きの要領は次の通りであった。 Then, A or A- on the first plating layer
Mn alloy plating was performed, and the procedure of A plating at that time was as follows.
すなわち、Aめっきは溶融塩電解法により行った。な
お、比較のため従来の溶融Aめっきによるものを一部
示した。That is, A plating was performed by the molten salt electrolysis method. For comparison, a part of the conventional hot-dip A plating is shown.
浴組成AC3・・・74.1wt% NaC・・・14.1wt% KC・・・11.8wt% 浴温 200℃ 電流密度:40〔A/dm2〕 通電時間:10g/m2につき30秒(30秒/10g/m2)上記を
基本浴組成として、合金めっきを行う場合は、各金属の
塩化物を添加すればよい。本例ではMnC2を添加し
た。Bath composition AC 3・ ・ ・ 74.1wt% NaC ・ ・ ・ 14.1wt% KC ・ ・ ・ 11.8wt% Bath temperature 200 ℃ Current density: 40 [A / dm 2 ] Energization time: 30 seconds per 10g / m 2 (30 Sec / 10 g / m 2 ) When alloy plating is performed using the above as the basic bath composition, chloride of each metal may be added. In this example, MnC 2 was added.
なお、めっき付着量は通電時間を変えることにより調整
した。The amount of plating adhered was adjusted by changing the energization time.
また、めっき槽は、溶融塩専用のインコネル600製フロ
ーセルを用いた。As the plating tank, an Inconel 600 flow cell dedicated to molten salt was used.
ホーロー掛けは慣用のものを使って1回で行った。すな
わち、まず、上述のようにして製造したアルミめっき鋼
板をアルカリ脱脂し、次いで水洗、乾燥してから鋼板表
面に釉薬をスプレーした。釉薬として日本フェロー社製
のAL80フリット(商品名)を使用して焼成し膜厚80μm
のホーロー層を得た。なお、焼成はマッフル炉を使って
550℃×5分間行った。The enameling was done once with a conventional one. That is, first, the aluminum-plated steel sheet manufactured as described above was degreased with alkali, then washed with water and dried, and then the surface of the steel sheet was sprayed with a glaze. AL80 frit (trade name) manufactured by Nippon Fellow Co., Ltd. is used as a glaze and baked to a film thickness of 80 μm.
Obtained the enamel layer. In addition, firing uses a muffle furnace
It was carried out at 550 ° C for 5 minutes.
このようにして得られた各供試材について目視による外
観、加工性そしてホーロー密着性の試験を行った。結果
は第2表にまとめて示す。本発明のかかるホーロー鋼板
はいずれの試験項目にもすぐれており、本発明によれば
アルミホーロー鋼板が初めて一般的に実用化できること
が理解される。Each test material thus obtained was visually examined for appearance, workability, and enamel adhesion. The results are summarized in Table 2. The enamel plate of the present invention is excellent in all test items, and it is understood that the enamel plate of the present invention can be generally put into practical use for the first time according to the present invention.
添付図面は本発明にかかるホーロー鋼板の模式的断面図
である。The accompanying drawings are schematic sectional views of enamel steel plates according to the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 八内 昭博 兵庫県尼崎市西長洲本通1丁目3番地 住 友金属工業株式会社総合技術研究所内 (72)発明者 内田 淳一 兵庫県尼崎市西長洲本通1丁目3番地 住 友金属工業株式会社総合技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Akihiro Yauchi, 3-3 Nishi-Nagasu Hon-dori, Amagasaki City, Hyogo Prefecture, Sumitomo Metal Industry Co., Ltd. (72) Inventor Junichi Uchida Nishi-Nagasu City, Amagasaki City, Hyogo Prefecture Hon-dori 1-3, Sumitomo Metal Industries, Ltd.
Claims (2)
oのうち少なくとも一種以上の元素から成るめっき層、
第二層としてめっき付着量5〜100g/m2のAまたはA
合金めっき層、そして第三層として、ホーロー層を有
することを特徴とするホーロー鋼板。1. Ni, Cr, and C as the first layer from the steel plate side
plating layer consisting of at least one element of o,
A or A with a coating weight of 5 to 100 g / m 2 as the second layer
An enamel plate, having an alloy plating layer and an enamel layer as a third layer.
ることを特徴とする、特許請求の範囲第1項記載のホー
ロー鋼板。2. The enamel plate according to claim 1, wherein the coating weight of the first layer is 0.5 to 20 g / m 2 .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23778786A JPH068513B2 (en) | 1986-10-06 | 1986-10-06 | Hollow steel plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23778786A JPH068513B2 (en) | 1986-10-06 | 1986-10-06 | Hollow steel plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6393877A JPS6393877A (en) | 1988-04-25 |
JPH068513B2 true JPH068513B2 (en) | 1994-02-02 |
Family
ID=17020424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23778786A Expired - Lifetime JPH068513B2 (en) | 1986-10-06 | 1986-10-06 | Hollow steel plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH068513B2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5500301A (en) | 1991-03-07 | 1996-03-19 | Kabushiki Kaisha Kobe Seiko Sho | A1 alloy films and melting A1 alloy sputtering targets for depositing A1 alloy films |
GB2356396B (en) * | 1999-10-07 | 2003-11-19 | Rolls Royce Plc | A metallic article having a protective coating and a method of applying a protective coating to a metallic article |
WO2006105963A2 (en) * | 2005-04-08 | 2006-10-12 | Ellenberger & Poensgen Gmbh | Sensor, in particular capacitive level sensor and method for producing said sensor |
JP6168826B2 (en) * | 2013-04-12 | 2017-07-26 | 東洋鋼鈑株式会社 | Steel with Mn layer |
-
1986
- 1986-10-06 JP JP23778786A patent/JPH068513B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6393877A (en) | 1988-04-25 |
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