JPH07275788A - Weldable type coated metal plate - Google Patents
Weldable type coated metal plateInfo
- Publication number
- JPH07275788A JPH07275788A JP6600394A JP6600394A JPH07275788A JP H07275788 A JPH07275788 A JP H07275788A JP 6600394 A JP6600394 A JP 6600394A JP 6600394 A JP6600394 A JP 6600394A JP H07275788 A JPH07275788 A JP H07275788A
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- metal plate
- back surface
- coated metal
- weldable
- 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
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば電気冷蔵庫や電
気洗濯機などの家電製品、鋼製家具その他の物品の外板
に利用される溶接可能な塗装金属板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weldable coated metal sheet used as an outer panel for home electric appliances such as electric refrigerators and electric washing machines, steel furniture and other articles.
【０００２】[0002]
【従来の技術】例えば、電気冷蔵庫等の家電製品の外周
部分（筐体）を製造する場合、従来は冷延鋼板を所定形
状に切断・加工し、それらをスポット溶接して組み立て
た後、塗装を施していたが、近年においては、あらかじ
め塗装を施したプレコート鋼板等の塗装金属板を用い、
これを所定形状に切断・加工した後、組み立てる方法が
主流となりつつある。これによれば、組み立て後に塗装
を行わなくても済むから、家電製品等のメーカーにおけ
る種々の工程や設備の削減が可能となる。2. Description of the Related Art For example, when manufacturing the outer peripheral portion (housing) of home electric appliances such as electric refrigerators, conventionally, cold-rolled steel sheets are cut and processed into a predetermined shape, spot-welded and assembled, and then painted. However, in recent years, a coated metal plate such as a precoated steel plate that has been previously coated is used,
The method of assembling after cutting and processing this into a predetermined shape is becoming mainstream. According to this, since it is not necessary to paint after assembling, it is possible to reduce various processes and facilities in a manufacturer of home electric appliances and the like.
【０００３】しかし、塗装金属板の組み立てでは通電性
がないため一般に多用されるスポット溶接を行うことが
できず、機械的嵌合法が主であった。ところが、製品の
デザイン上、機械的嵌合を施しにくい部分のある製品に
ついては塗装金属板を用いることができないという問題
が生じていた。However, in assembling a coated metal sheet, spot welding, which is generally used, cannot be performed because it has no electrical conductivity, and the mechanical fitting method has been mainly used. However, due to the design of the product, there is a problem that the coated metal plate cannot be used for a product having a portion where mechanical fitting is difficult.
【０００４】このような問題に対処しうるものとして、
例えば特開昭５５−１１６７７号公報や特開昭６１−６
９８５２号公報には、接着剤を用いて塗装金属板を接合
する技術が開示されている。これによれば、スポット溶
接を行わなくても済むから、上述のような機械的嵌合に
よる組み立てが困難な製品に対しても塗装金属板を使用
することが可能となる。しかし、接着剤塗布機や誘導加
熱用装置等の設備を別途備える必要があるとともに、そ
れに伴って組み立てラインも改造しなければならないと
いう問題がある。 そこで、従来においては、溶接を行
うことができるようにした溶接可能型塗装金属板が提案
されている。これは、塗装金属板の裏面側に施される塗
膜を薄膜化し、あるいは裏面塗膜に導電粉を添加するこ
とにより、当該金属板の裏面に導電性を付与したもの
で、これによれば塗装金属板の裏面において通電させる
ことができるので、シリーズ溶接を行うことが可能とな
る。As a means for dealing with such a problem,
For example, JP-A-55-11677 and JP-A-61-6
Japanese Patent No. 9852 discloses a technique for joining coated metal plates using an adhesive. According to this, it is not necessary to perform spot welding, so that the coated metal plate can be used even for a product that is difficult to assemble by mechanical fitting as described above. However, there is a problem that it is necessary to separately provide equipment such as an adhesive coating machine and a device for induction heating, and the assembly line must be modified accordingly. Therefore, conventionally, a weldable type coated metal plate capable of performing welding has been proposed. This is because the coating applied to the back side of the coated metal plate is thinned, or conductive powder is added to the back side coating to impart conductivity to the back side of the metal plate. Since electric current can be applied to the back surface of the coated metal plate, series welding can be performed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の溶接可能型塗装金属板においては、母材金
属板の厚みが約０．８ｍｍ以下の場合には溶接部に圧痕
が残り、意匠性が低下するという問題があった。However, in the conventional weldable type coated metal sheet as described above, when the thickness of the base metal sheet is about 0.8 mm or less, an indentation remains on the welded portion and the design is reduced. There was a problem that it deteriorated.
【０００６】本発明は、このような問題に対処するもの
で、板厚が小さい場合でも溶接部圧痕の目立ちにくい溶
接可能型塗装金属板を提供することを目的とする。The present invention addresses such a problem, and an object of the present invention is to provide a weldable type coated metal plate in which the indentation of the welded portion is less noticeable even when the plate thickness is small.
【０００７】[0007]
【課題を解決するための手段】塗装金属板における溶接
圧痕部の発生原因について調べたところ、この種の圧痕
部は、溶接時に電極で加圧されたために発生するのでは
なく、通電後に溶接部の熱影響で塗膜が膨張・収縮する
ことにより生じることが判明した。したがって、母材の
板厚が大きい場合（例えば０．８ｍｍ以上の場合）に
は、熱容量が大きくなる分だけ溶接部の温度上昇が抑え
られるため、塗膜面が平滑な塗装金属板でも、ほとんど
外観上の問題を生じることなく溶接を行うことができ
る。[Means for Solving the Problems] When the cause of the welding indentation portion on the coated metal plate was investigated, this type of indentation portion does not occur due to being pressed by the electrode during welding, but after welding It was found that this occurs due to the coating film expanding and contracting under the influence of heat. Therefore, when the base material has a large plate thickness (for example, 0.8 mm or more), the temperature rise of the welded part is suppressed by the increase in the heat capacity, so that even with a coated metal plate with a smooth coating surface, Welding can be carried out without causing problems in appearance.
【０００８】また、上記溶接圧痕部の表面状態を調べた
ところ、その圧痕部表面における凹凸の高低差は、母材
の板厚や溶接条件にもよるが、約３〜１０μｍ程度であ
った。一方、従来のロールコートで得られる平滑な塗装
面の表面粗さは、おおよそ０．５〜１μｍ程度であり、
このことが塗装面において溶接圧痕部を目立たせる原因
となっているものと考えられる。Further, when the surface condition of the weld indentation portion was examined, the height difference of the unevenness on the surface of the indentation portion was about 3 to 10 μm, depending on the plate thickness of the base metal and welding conditions. On the other hand, the surface roughness of the smooth coated surface obtained by the conventional roll coating is about 0.5 to 1 μm,
This is considered to be the cause of making the welding indentation part noticeable on the coated surface.
【０００９】そこで、塗装金属板の表側の塗膜を平滑状
のものからゆず肌状のものに変更したところ、母材の板
厚が小さい場合でも外観上問題なく溶接できることが判
明した。なお、溶接部の熱影響を受ける塗膜部分でも、
耐食性などの低下は全く見られなかった。 以上の所見
に基づき、本発明の溶接可能型塗装金属板は、上記目的
を達成するために次のように構成したことを特徴とす
る。すなわち、下地処理が施された金属板（母材）の表
側の表面に、ゆず肌外観を呈する塗膜を形成する一方、
同金属板の裏面には、導電性を付与するために膜厚が３
μｍ以下の有機塗膜を形成した構成とする。Then, when the coated film on the front side of the coated metal plate was changed from a smooth one to a yuzu-skin-like one, it was found that even if the base metal had a small thickness, it could be welded without any problem in appearance. In addition, even in the coating film part that is affected by the heat of the welded part,
No deterioration in corrosion resistance was observed. Based on the above findings, the weldable type coated metal sheet of the present invention is characterized in that it is configured as follows in order to achieve the above object. That is, while forming a coating film exhibiting an orange peel appearance on the surface of the front side of the metal plate (base material) that has been subjected to the base treatment,
The back surface of the metal plate has a film thickness of 3 to give conductivity.
An organic coating film having a thickness of less than μm is formed.
【００１０】ここで、母材金属板の裏面には、膜厚が３
μｍ以下の有機塗膜を形成する代わりに、導電性を付与
する他の手段として、導電性顔料ないし導電粉を含有し
た有機塗膜を形成してもよいし、あるいは有機塗膜を部
分的に形成することで溶接可能な無塗装部分を設ける構
成としてもよい。前者の場合における導電粉としては、
Ｚｎ、Ａｌなどの金属粉あるいはＦｅ2 ＰやＣなどが挙
げられる。導電粉の粒径はおよそ１〜１０μｍ程度、添
加量は体積濃度で５０％以上、塗膜厚は３〜１５μｍが
好ましい。３μｍ以下では十分な耐食性が得られず、１
５μｍ以上では加工性や密着性の低下あるいは経済性の
低下を招く。また、導電粉を入れない後者の場合には、
塗膜厚が３μｍ以下でないと通電できず、溶接不良が発
生する。好ましくは、０．５〜１．５μｍの範囲であ
る。この種の裏面塗膜を構成する樹脂としては、ポリエ
ステル系、エポキシ系、ウレタン系の樹脂が良い。Here, a film thickness of 3 is formed on the back surface of the base metal plate.
Instead of forming an organic coating having a thickness of less than μm, an organic coating containing a conductive pigment or conductive powder may be formed as another means for imparting conductivity, or the organic coating may be partially formed. A non-painted portion that can be welded by forming may be provided. As the conductive powder in the former case,
Examples thereof include metal powder such as Zn and Al, or Fe 2 P and C. It is preferable that the particle size of the conductive powder is approximately 1 to 10 μm, the addition amount is 50% or more in volume concentration, and the coating film thickness is 3 to 15 μm. If the thickness is 3 μm or less, sufficient corrosion resistance cannot be obtained, and 1
When it is 5 μm or more, workability and adhesion are lowered, or economic efficiency is lowered. In the latter case where no conductive powder is added,
If the thickness of the coating film is not 3 μm or less, current cannot be supplied and welding failure occurs. The range is preferably 0.5 to 1.5 μm. As a resin constituting the back coating film of this type, a polyester resin, an epoxy resin, or a urethane resin is preferable.
【００１１】また、母材金属板としては、メッキ付着量
が片面で２０〜１２０ｇ／ｍ2 の亜鉛系メッキ鋼板など
を使用することができる。この場合の亜鉛系メッキ鋼板
は、電気亜鉛メッキ、溶融亜鉛メッキ、合金化溶融亜鉛
メッキ、その他亜鉛を主成分とするメッキを施した冷延
鋼板であれば良い。メッキ付着量が２０ｇ／ｍ2 以下で
は端面の耐食性が十分でなく、また１２０ｇ／ｍ2 以上
では塗装鋼板の加工性を損なう場合が多い。４０〜９０
ｇ／ｍ2 が好適範囲である。As the base metal plate, it is possible to use a zinc-based plated steel plate having a plating adhesion amount of 20 to 120 g / m 2 on one surface. The zinc-based plated steel sheet in this case may be a cold-rolled steel sheet that has been galvanized, hot-dip galvanized, hot-dip galvannealed, or plated with zinc as a main component. If the coating weight is 20 g / m 2 or less, the corrosion resistance of the end face is insufficient, and if it is 120 g / m 2 or more, the workability of the coated steel sheet is often impaired. 40-90
The preferable range is g / m 2 .
【００１２】下地処理としては、通常のリン酸亜鉛
（０．３〜１．２ｇ／ｍ2 ）あるいは塗布型クロメート
処理（２０〜１００ｇ／ｍ2 ：Ｃｒ金属換算）のどちら
か一方または両方を施せばよい。いずれも、上記の下限
値以下の付着量では、処理が不均一であるため耐食性
能、密着性の低下を生じ、また上限値以上では加工性を
損なう場合が多いからである。As the base treatment, one or both of ordinary zinc phosphate (0.3 to 1.2 g / m 2 ) and coating type chromate treatment (20 to 100 g / m 2 : Cr metal conversion) may be applied. Good. In any case, when the amount of adhesion is less than the above lower limit, the treatment is non-uniform, so that the corrosion resistance and the adhesion are deteriorated, and when it is more than the upper limit, the workability is often impaired.
【００１３】一方、製品の外観となる金属板表側の表面
には、ゆず肌外観を呈する塗膜を形成する必要がある。
この種の塗膜は、例えば熱可塑性樹脂を含有させたポリ
エステル系またはエポキシ系またはウレタン系のゆず肌
形成用プライマー塗膜と、その上に形成されたポリエス
テル系上塗り塗膜とで構成することができる。通常は金
属板表側の表面に上記のような所定の熱可塑性樹脂を含
有させた塗膜層を少なくとも一層設けることにより、塗
膜表面に少なくとも０．５μｍ以上の高低差を有するゆ
ず肌状の凹凸を形成する。このようなゆず肌は、例えば
特開昭６２−５３７７５公報に記載されているような公
知の方法で作ることができる。すなわち、塗膜層を形成
する際に、溶剤または分散剤中に操作温度で液体の架橋
可能な又は熱可塑性の樹脂と、表面張力が同樹脂と異な
り且つ上記溶剤または分散剤中に懸濁または乳化した有
機物質（その含有量は、同樹脂の乾燥重量に対して０．
５〜７重量％とする）と、通常の塗料添加剤とを含ませ
る。そして、このように調整した塗料を母材金属板表面
に塗装することによって、上述したゆず肌を形成するこ
とができる。ゆず肌のうねり形状としては、ＪＩＳで規
定されるうねり高さＷｃ−ａで０．５μｍ〜３．０μ
ｍ、うねり周期Ｗｃ−ｓｍで１００〜１００００μｍが
好適である。On the other hand, it is necessary to form a coating film having an orange peel appearance on the surface of the surface of the metal plate which is the appearance of the product.
This type of coating film may be composed of, for example, a polyester-based or epoxy-based or urethane-based Yuzu-skin forming primer coating containing a thermoplastic resin, and a polyester-based topcoat coating formed thereon. it can. Usually, by providing at least one coating layer containing the above-mentioned predetermined thermoplastic resin on the surface of the metal plate, it is possible to obtain an orange-skin-like unevenness having a height difference of at least 0.5 μm on the coating surface. To form. Such yuzu skin can be produced by a known method as described in, for example, JP-A-62-53775. That is, when forming a coating layer, a crosslinkable or thermoplastic resin which is liquid at an operating temperature in a solvent or a dispersant, has a surface tension different from that of the resin and is suspended in the solvent or the dispersant. The emulsified organic substance (the content of the emulsified organic substance is 0.
5 to 7% by weight) and usual paint additives. Then, by applying the paint thus adjusted to the surface of the base metal plate, the above-mentioned orange peel skin can be formed. As the waviness shape of the yuzu skin, the waviness height Wc-a defined by JIS is 0.5 μm to 3.0 μm.
m, and the waviness period Wc-sm is preferably 100 to 10,000 μm.
【００１４】[0014]
【作用】上記の構成によれば、母材金属板の裏面に、膜
厚が３μｍ以下または導電性顔料ないし導電粉入りの有
機塗膜が形成されているか或いは無塗装の部分が設けら
れていることにより、同裏面側において通電可能となる
ので、スポット溶接やシリーズ溶接等の電気溶接を施す
ことができる。その場合、母材金属板の板厚が小さいと
従来においては溶接時の熱影響により溶接部に圧痕が生
じていたのであるが、本発明の塗装金属板においては、
その表側の表面にゆず肌外観を呈する塗膜が形成されて
いるので、溶接圧痕部とゆず肌のそれぞれの凹凸寸法の
関係から圧痕部が目立ちにくくなる。これにより、板厚
が小さい場合でも溶接部圧痕の目立ちにくい溶接可能型
塗装金属板が実現されることとなる。According to the above construction, an organic coating film having a film thickness of 3 μm or less or containing a conductive pigment or conductive powder is formed on the back surface of the base metal plate, or an unpainted portion is provided. As a result, it becomes possible to conduct electricity on the back surface side, so that electric welding such as spot welding or series welding can be performed. In that case, if the thickness of the base metal plate is small, in the conventional case, an indentation was generated in the welded portion due to the thermal effect at the time of welding, but in the coated metal plate of the present invention,
Since a coating film having an appearance of yuzu skin is formed on the surface of the front side, the indentation portion is less noticeable due to the relationship between the unevenness dimensions of the welding indentation portion and the yuzu skin. As a result, even if the plate thickness is small, it is possible to realize a weldable coated metal plate in which the indentation of the weld portion is less noticeable.
【００１５】[0015]
【実施例】以下、本発明の実施例について説明する。 〔実施例１〜５、比較例１〜５〕母材として溶融亜鉛メ
ッキ鋼板（６０ｇ／ｍ2 亜鉛付着量、板厚０．５〜１．
０ｍｍ）を使用し、これに脱脂処理とリン酸処理（１ｇ
／ｍ2 ）を順番に施した後、その表側の表面には、下層
側から順番に下記プライマー塗膜（１５ｇ／ｍ2）とト
ップ塗膜（３０ｇ／ｍ2 ）とをバーコートにより塗布
し、それぞれ最高到達温度が２１５°Ｃ、２３０°Ｃと
なるように６０秒間焼付けて乾燥させた。また、上記鋼
板の裏面には、エポキシ塗膜（日本ペイント製ビンゾー
ル１０００：裏面用塗料）を１ｇ／ｍ2 塗布（膜厚は
０．７μｍ）し、プライマー塗膜と同様の条件で焼付け
・乾燥させた。 この場合に使用したプライマー種およ
びトップ塗料は、次の通りである。EXAMPLES Examples of the present invention will be described below. [Examples 1 to 5, Comparative Examples 1 to 5] Hot dip galvanized steel sheet as base material (60 g / m 2 zinc adhesion amount, sheet thickness 0.5 to 1.
0mm), and degreasing treatment and phosphoric acid treatment (1g
/ M 2 ) in that order, and then the surface of the surface thereof is coated with the following primer coating (15 g / m 2 ) and top coating (30 g / m 2 ) by bar coating in order from the lower layer side. Then, they were baked and dried for 60 seconds so that the maximum temperatures reached were 215 ° C and 230 ° C, respectively. On the back surface of the above steel sheet, an epoxy coating film (Nippon Paint Binsol 1000: coating material for back surface) was applied at 1 g / m 2 (film thickness 0.7 μm), and baked and dried under the same conditions as the primer coating film. Let The primer type and top coating used in this case are as follows.
【００１６】プライマー種 Ａ：平滑プライマー（日本ペイント製Ｐ６００プライマ
ー、ポリエステル系） Ｂ：ゆず肌形成プライマー
（カシュー塗料製セノコイル２３００、ポリエステ
ル系、樹脂粒子含有） トップ塗料：日本ペイント製ＦＬＣ２００、ポリエステ
ル系） 次に、図１に示すように、上述の塗装鋼板ａの裏面ａ1
に裸メッキ鋼板ｂを当て、その裸メッキ鋼板ｂの裏面側
に溶接用電極のうちの一つの電極ｃ1 を接触させるとと
もに、他の電極ｃ2 を塗装鋼板裏面ａ1 に直接的に接触
させ、その状態で電流を印加して両鋼板ａおよびｂをシ
リーズ溶接した。その場合、裸メッキ鋼板ｂにおいて
は、溶接を行う前にあらかじめ電極ｃ1 の当たる面より
ポンチで直径３ｍｍ、高さ２ｍｍの突起（プロジェクシ
ョン部）ｂ1 を形成し、この部分に電極ｃ1 を圧着して
溶接した。Primer type A: Smooth primer (Nippon Paint P600 primer, polyester type) B: Yuzu skin forming primer (Cashew paint Senocoil 2300, Polyester
Top coating: FLC200 made by Nippon Paint, polyester coating) Next, as shown in FIG. 1, the back surface a 1 of the above-mentioned coated steel sheet a
A bare-plated steel plate b, and one electrode c 1 of the welding electrodes is brought into contact with the back surface side of the bare-plated steel plate b, and the other electrode c 2 is directly brought into contact with the coated steel plate back surface a 1. In that state, an electric current was applied to the two steel plates a and b to perform series welding. In that case, in the bare-plated steel sheet b, a projection (projection portion) b 1 having a diameter of 3 mm and a height of 2 mm is formed in advance from the surface on which the electrode c 1 is contacted by a punch, and the electrode c 1 is formed on this portion. Crimped and welded.
【００１７】このようにして溶接した各種塗装鋼板にお
いて、溶接部に対応する表側の表面部分（溶接時の熱の
影響を直接受けて圧痕を生じやすい熱影響部）ａ2 の状
態を調べたところ、下記表１に示すような結果が得られ
た。同表中、溶接強度は、引張試験機にて測定した値で
あり、外観は目視により、溶接部が目立つものを×、溶
接部がわからないものを○と判断した。なお、板厚の大
小にかかわらず、塗装表面のうねりは、プライマー種が
ＡのものでＷｃ−ａが０．２μｍ、Ｗｃ−ｓｍが１００
μｍ、ＢのものでＷｃ−ａが１．３μｍ、Ｗｃ−ｓｍが
５００〜２０００μｍであった。In each of the various coated steel sheets thus welded, the state of the front surface portion corresponding to the welded portion (heat-affected zone which is likely to be indented by the influence of heat during welding) a 2 was examined. The results shown in Table 1 below were obtained. In the table, the welding strength is a value measured by a tensile tester, and the appearance is visually judged to be x when the weld is conspicuous and o when the weld is not visible. The waviness of the coated surface was 0.2 μm for Wc-a and 100 for Wc-sm regardless of the plate thickness.
of Wc-a was 1.3 μm and Wc-sm was 500 to 2000 μm.
【００１８】[0018]
【表１】 [Table 1]
【００１９】この表１に示すように、塗装鋼板の表側の
表面にプライマー種がＡのもの、つまり平滑なプライマ
ー塗膜を形成した比較例１〜５では、板厚が１ｍｍから
小さくなるにしたがって溶接部が目立つようになるのに
対して、ゆず肌形成プライマー塗膜を形成した本発明実
施例１〜５では、いずれも鋼板表側の表面において溶接
部が目立たず、板厚が０．５ｍｍ程度のもの（実施例１
および２）でも外観が損なわれないことが確認された。As shown in Table 1, in Comparative Examples 1 to 5 in which the primer type is A, that is, a smooth primer coating film is formed on the surface of the coated steel sheet, as the sheet thickness decreases from 1 mm. Whereas the welds become conspicuous, in each of Examples 1 to 5 of the present invention in which the Yuzu-skin forming primer coating film is formed, the welds are not conspicuous on the surface of the steel plate front side, and the plate thickness is about 0.5 mm. (Example 1
Also in 2), it was confirmed that the appearance was not impaired.
【００２０】[0020]
【発明の効果】以上のように、本発明によれば、塗装金
属板の裏面に導電性を付与する一方、製品の外観となる
同金属板表側の表面にはゆず肌外観を呈する塗膜を形成
したので、溶接が可能となるとともに、板厚が小さい場
合に生じやすい溶接部における圧痕が目立たたなくな
る。したがって、例えば家電製品その他の物品の外板に
用いられる０．５ｍｍ近傍の薄鋼板でも外観劣化を生じ
ることなく溶接が可能となる。これにより、カシメ等の
機械的嵌合を施しにくい部分がある製品についても、従
来のスポット溶接ラインを用いた塗装金属板の使用が可
能となり、その結果、設備改造等を行わなくも済むこと
になる。As described above, according to the present invention, a coating film which gives conductivity to the back surface of a coated metal plate and has a yuzu-skin appearance on the front surface of the metal plate, which is the appearance of the product, is provided. Since it is formed, welding is possible, and the indentation in the welded portion, which is likely to occur when the plate thickness is small, becomes inconspicuous. Therefore, for example, even a thin steel plate having a thickness of about 0.5 mm, which is used as an outer plate of home electric appliances and other articles, can be welded without causing deterioration in appearance. This makes it possible to use coated metal plates using conventional spot welding lines even for products that have parts that are difficult to mechanically fit, such as caulking, and as a result, there is no need to modify equipment. Become.
【図１】本発明実施例の説明に使用したもので、塗装鋼
板の溶接例を示す説明図FIG. 1 is an explanatory view showing a welding example of a coated steel sheet, which is used for explaining an embodiment of the present invention.
ａ・・・塗装鋼板（塗装金属板） ａ1 ・・・塗装鋼板の裏面 ａ2 ・・・塗装鋼板における溶接部に対応する表側の表
面部分 ｂ・・・裸メッキ鋼板 ｃ1 、ｃ2 ・・・溶接用電極a: Painted steel plate (painted metal plate) a 1 ... Back surface of painted steel plate a 2 ... Front surface part corresponding to welded part of painted steel plate b ... Bare plated steel plate c 1 , c 2 ..Welding electrodes
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０５Ｄ 7/24 Ｕ 7717−4Ｄ Ｖ 7717−4Ｄ Ｂ３２Ｂ 15/08 Ｇ (72)発明者 壱岐島 健司 大阪府大阪市中央区北浜４丁目５番33号住 友金属工業株式会社内 (72)発明者 吉田 究 大阪府大阪市中央区北浜４丁目５番33号住 友金属工業株式会社内 (72)発明者 水師 弘之 大阪府大阪市中央区北浜４丁目５番33号住 友金属工業株式会社内 (72)発明者 福井 清之 大阪府大阪市中央区北浜４丁目５番33号住 友金属工業株式会社内Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display location B05D 7/24 U 7717-4D V 7717-4D B32B 15/08 G (72) Inventor Kenji Ikijima Osaka Osaka Sumitomo Metal Industries, Ltd. 4-53-3 Kitahama, Chuo-ku, Yokohama (72) Inventor Yoshida, Sumitomo Metal Industries, Ltd. 4-53-3 Kitahama, Kitahama, Chuo-ku, Osaka-shi, Osaka (72) Inventor Water Master Hiroyuki Sumitomo Metal Industries, Ltd. 4-53-3 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture (72) Inventor Kiyoyuki Fukui 4-53-3 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture Sumitomo Metal Industries, Ltd.
Claims (4)
に、ゆず肌外観を呈する塗膜が形成されているととも
に、同金属板の裏面には、膜厚が３μｍ以下の有機塗膜
が形成されていることを特徴とする溶接可能型塗装金属
板。1. An organic coating film having a film thickness of 3 μm or less is formed on the front surface of a metal plate which has been subjected to a base treatment, and a coating film having an orange peel appearance is formed on the front surface of the metal plate. A weldable coated metal plate characterized by being formed.
に、ゆず肌外観を呈する塗膜が形成されているととも
に、裏側の表面には、導電性顔料ないし導電粉を含有し
た有機塗膜が形成されていることを特徴とする溶接可能
型塗装金属板。2. An undercoating-treated metal plate is provided with a coating film having a yuzu-skin appearance on the front surface and an organic coating containing a conductive pigment or conductive powder on the back surface. A weldable type coated metal plate having a film formed thereon.
に、ゆず肌外観を呈する塗膜が形成されているととも
に、裏側の表面には、有機塗膜が部分的に形成されてい
ることにより溶接可能な無塗装部分が設けられているこ
とを特徴とする溶接可能型塗装金属板。3. A coating film exhibiting an orange peel appearance is formed on the front surface of a metal plate which has been subjected to a base treatment, and an organic coating film is partially formed on the back surface. A weldable coated metal sheet characterized by having an unpainted portion that can be welded.
脂を含有させたポリエステル系またはエポキシ系または
ウレタン系のゆず肌形成用プライマー塗膜と、その上に
形成されたポリエステル系上塗り塗膜とからなることを
特徴とする請求項１〜３のいずれかに記載の溶接可能型
塗装金属板。4. A coating film exhibiting an orange peel appearance is a polyester-based or epoxy-based or urethane-based yuzu-skin forming primer coating containing a thermoplastic resin, and a polyester-based top coating film formed thereon. The weldable type coated metal plate according to any one of claims 1 to 3, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06600394A JP3315243B2 (en) | 1994-04-04 | 1994-04-04 | Weldable painted metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06600394A JP3315243B2 (en) | 1994-04-04 | 1994-04-04 | Weldable painted metal plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07275788A true JPH07275788A (en) | 1995-10-24 |
| JP3315243B2 JP3315243B2 (en) | 2002-08-19 |
Family
ID=13303347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06600394A Expired - Lifetime JP3315243B2 (en) | 1994-04-04 | 1994-04-04 | Weldable painted metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3315243B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001083627A1 (en) * | 2000-04-27 | 2001-11-08 | Dainippon Ink And Chemicals, Inc. | Water-based coating composition curable with actinic energy ray, coated metallic material with cured film of the composition, production process, and method of bonding coated metallic material |
| JP2002012797A (en) * | 2000-04-27 | 2002-01-15 | Dainippon Ink & Chem Inc | Active energy ray curable aqueous coating composition, coated metal material having cured film of the composition, manufacturing method and welding method of coated metal material |
| JP2004243310A (en) * | 2003-01-23 | 2004-09-02 | Sumitomo Metal Ind Ltd | Heat radiating surface-treated metal plate and case for electronic apparatus |
| JP2011140229A (en) * | 2003-01-23 | 2011-07-21 | Sumitomo Metal Ind Ltd | Heat-radiating surface-treated metal plate and housing for electronic devices |
-
1994
- 1994-04-04 JP JP06600394A patent/JP3315243B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001083627A1 (en) * | 2000-04-27 | 2001-11-08 | Dainippon Ink And Chemicals, Inc. | Water-based coating composition curable with actinic energy ray, coated metallic material with cured film of the composition, production process, and method of bonding coated metallic material |
| JP2002012797A (en) * | 2000-04-27 | 2002-01-15 | Dainippon Ink & Chem Inc | Active energy ray curable aqueous coating composition, coated metal material having cured film of the composition, manufacturing method and welding method of coated metal material |
| US7268171B2 (en) | 2000-04-27 | 2007-09-11 | Dainippon Ink And Chemicals, Inc. | Water-based coating composition curable with actinic energy ray, coated metallic material with cured film of the composition, production process, and method of bonding coated metallic material |
| JP2004243310A (en) * | 2003-01-23 | 2004-09-02 | Sumitomo Metal Ind Ltd | Heat radiating surface-treated metal plate and case for electronic apparatus |
| JP2011140229A (en) * | 2003-01-23 | 2011-07-21 | Sumitomo Metal Ind Ltd | Heat-radiating surface-treated metal plate and housing for electronic devices |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3315243B2 (en) | 2002-08-19 |
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