JPS6295180A - Production of coated lightweight shape steel - Google Patents

Production of coated lightweight shape steel

Info

Publication number
JPS6295180A
JPS6295180A JP23584385A JP23584385A JPS6295180A JP S6295180 A JPS6295180 A JP S6295180A JP 23584385 A JP23584385 A JP 23584385A JP 23584385 A JP23584385 A JP 23584385A JP S6295180 A JPS6295180 A JP S6295180A
Authority
JP
Japan
Prior art keywords
coating
paint
steel
coated
forming
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
Application number
JP23584385A
Other languages
Japanese (ja)
Inventor
Masayoshi Nomura
眞義 野村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Metal Products Co Ltd
Original Assignee
Nippon Steel Metal Products Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Metal Products Co Ltd filed Critical Nippon Steel Metal Products Co Ltd
Priority to JP23584385A priority Critical patent/JPS6295180A/en
Publication of JPS6295180A publication Critical patent/JPS6295180A/en
Pending legal-status Critical Current

Links

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To obtain excellent coating efficiency and uniform coated film thickness by coating one surface of the front and rear surfaces of band steel with a paint, drying the paint, forming the band steel into shape steel at the succeeding forming stand with the coated surface placed on the inside, and coating the outer surface. CONSTITUTION:A paint is coated on one surface of the front and rear surfaces of band steel 11 by a coating device 16 on the upstream side of the forming stand 23 in cold rolling equipment 21, and the paint is dried by a drying furnace 20. The band steel 11 is formed into shape steel 1 at the succeeding forming stand 23 with the coated surface placed on the inside. The outer uncoated surface of the formed shape steel 1 is coated by the coating device 27. Consequently, coated lightweight shape steel having uniform coated film thickness and a good coating quality without any damage on the coated film can be produced with excellent coating efficiency and at a low coating cost.

Description

【発明の詳細な説明】 [産業上の利用分野1 この発明は、内外面とも塗装が施されたg、足形鋼を製
造する塗装軽量形鋼の製造方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a method for manufacturing a painted lightweight section steel for manufacturing leg sections whose inner and outer surfaces are coated.

[従来の技術1 軽量形鋼は、冷間ロール成形設備によりコイル状の帯鋼
から溝形、C型等の断面形状に成形されたもので、主と
して建築材料に使用されるが、外観の美化向上、および
、内面外観の防食のために、塗装を必要とする場合も多
い。この塗装を施した軽量形鋼、すなわち塗装U足形鋼
を生産するためには、大別してアフターコート法(成形
後塗装法)とプレコート法(成形前塗装法)の2通つの
方法がある。前者は、一般的に行なわれているもので、
軽量形鋼を成形した後、別工程で塗装を施すものであり
、後者は、帯鋼の表裏両面にあらかじめ塗装を施してお
き、この塗装済みのフィル状の帯鋼を成形機で所定の断
面に成形して塗装軽量形鋼を得る方法である。
[Conventional technology 1] Lightweight section steel is formed from a coiled steel strip into a groove-shaped, C-shaped, etc. cross-sectional shape using cold roll forming equipment, and is mainly used as a building material, but it is also used to improve the appearance of the steel. Painting is often required to improve the internal appearance and to prevent corrosion. In order to produce this coated lightweight section steel, that is, painted U foot section steel, there are two main methods: an after-coat method (painting method after forming) and a pre-coating method (painting method before forming). The former is commonly practiced;
After forming a lightweight section steel, it is painted in a separate process.In the latter case, both the front and back sides of the steel strip are coated in advance, and the coated steel strip is shaped into a predetermined cross-section using a forming machine. This is a method to obtain coated lightweight section steel.

[発明が解決しようとする問題点1 前記アフターコート法には次のような欠点がある。第1
に、形鋼の状態で塗装するものであるから、例えばエア
レス塗装機等のスプレ一式塗装磯により吹き付は塗装を
した場合、平板1こ吹き付ける場合と比べて塗料の無用
な飛散が多く、塗着効率が悪い。第2に、例えば紫外線
硬化型塗料を用いて紫外線の照射で乾燥を行う塗装法に
よれば、塗料の乾燥硬化時間が著しく短いため、塗装処
理の能率が向上し、また、乾燥設備が簡単で設備費が安
価になり、塗装コストが低減されるが、ブラインドコー
ナ部分、例えば、第4図に示すC形鋼1の場合、リップ
部1aの陰になる部分(イ)、(ロ)があると、この部
分に紫外線(破線矢印で示す)が届かないためこの方法
は採用できない。これは、電子線照射による場合でも同
様である。第3に、塗料!I5!厚は全面に均等である
ことが望ましいが、j前記のブラインドコーナ部分があ
ると、このブラインドコーナ部分は塗料の吹き付けが容
易でないので、塗り残しがないように必要以上に多量に
吹き付けることとなり、その近傍の膜厚が必要以上に厚
くなり、不Pi、済である。第4に、塗装中に製品を支
持している部分は塗装できないので、手直しが必要であ
り、塗装作業が煩雑になる。すなわち、内面は耐食性を
重視するため、塗り残し、硬化不充分などのないことが
必要であるので、アフターコートは不利である。プレコ
ートであればこの点は容易である。
[Problem 1 to be Solved by the Invention The above-mentioned aftercoat method has the following drawbacks. 1st
In addition, since the painting is done on the shaped steel, if the painting is done using a spray kit such as an airless painting machine, there will be more unnecessary paint scattering than when spraying on a single flat plate. Poor wearing efficiency. Second, for example, according to a coating method that uses ultraviolet-curable paint and dries it by irradiating it with ultraviolet light, the drying and curing time of the paint is extremely short, which improves the efficiency of the painting process and also allows for simple drying equipment. Equipment costs are cheaper and painting costs are reduced, but in the case of blind corner parts, for example, the C-shaped steel 1 shown in Fig. 4, there are parts (a) and (b) that are in the shadow of the lip part 1a. However, this method cannot be used because ultraviolet rays (indicated by the dashed arrow) cannot reach this area. This also applies to the case of electron beam irradiation. Third, paint! I5! It is desirable that the thickness be uniform over the entire surface, but if there is a blind corner part as described above, it is difficult to spray paint on this blind corner part, so you will have to spray more paint than necessary to avoid leaving any unpainted parts. The film thickness in the vicinity becomes thicker than necessary, resulting in poor Pi. Fourth, since the parts supporting the product cannot be painted during painting, they must be touched up, making the painting process complicated. That is, since corrosion resistance is important for the inner surface, it is necessary that there be no uncoated areas or insufficient curing, so after-coating is disadvantageous. This point is easy with pre-coating.

また、前記プレコート法は、平板状態で塗装するから、
ロールコータによる塗装方法、すなわち、回転するロー
ルの表面に塗料を連続的に供給し、このロールの表面の
塗料を被塗装物に転写する塗装方法を採用でき、このロ
ールコータによる塗装では、塗料の無用な飛散がないの
で塗着効率がよいこと、ブラインドコーナ部分がないか
ら、紫外線、または、電子線硬化型塗料による塗装法を
採用でき、その塗装法では塗料の乾燥時間が極めて矧い
ため設備が大規模にならず設備費が安価であること、等
の長所があるが、次のような欠点がある。すなわち、第
1に、塗装済みの帯鋼を成形する際に形鋼の外面となる
部分の曲げコーナ一部は伸びるので、この外面の曲げコ
ーナ一部の塗料に引っ張9が作用し、塗膜に割れが生じ
てしまう。
In addition, since the pre-coating method is applied in a flat state,
A coating method using a roll coater, that is, a coating method in which paint is continuously supplied to the surface of a rotating roll and the paint on the surface of this roll is transferred to the object to be coated, can be adopted. There is no unnecessary scattering, so the coating efficiency is high, and since there are no blind corners, it is possible to use coating methods using ultraviolet rays or electron beam curing paints. Although it has advantages such as not being large-scale and requiring low equipment costs, it has the following disadvantages. Firstly, when forming a painted steel strip, a part of the bent corner of the outer surface of the section stretches, so a tension 9 acts on the paint at a part of the bent corner of this outer surface, causing the coating film to deteriorate. cracks will occur.

第2に、外面は他に接触することが多いがら笛が付き易
く、特に、ロール成形の際には祈り曲げの過程で外面に
傷が付き易い。また、外面は、傷付き防止、クランクか
らの錆発生防止のために、硬くてしかも加工に酎える充
分延びのある塗膜でないと、プレコートは採用できない
が、そのような塗膜は塗料価格の高いものでないと得ら
れない。
Second, although the outer surface often comes into contact with other objects, it is easily scratched, and in particular, during roll forming, the outer surface is easily scratched during the bending process. Also, in order to prevent scratches and rust from occurring on the crankshaft, pre-coating cannot be used on the external surface unless the coating is hard and has enough extension to be processed, but such coatings are expensive. You can't get it unless it's expensive.

77ターコートの場合には硬く傷付きにくい塗膜であれ
ばよく、安価に得られる。第3に、プレコート法では、
成形すべき形鋼の所要材料幅にスリットする勘の幅の広
いままの状態で帯鋼の塗装を行わなければ、塗装コスト
が著しく高くなるので、通常はス’) ノ) 1iij
に塗装するが、幅の広い帯鋼にあらかじめ塗装を施して
いたとしても、これを成形しようとする形鋼の所要材料
幅に合わせてスリットすると、二ツノ部分が未塗装とな
るので、このエンノ部分は成形後に塗装を必要とし、2
度手間となり、塗装コストが高くなること、等の欠、α
がある。
In the case of 77 Tarcoat, any coating film that is hard and scratch-resistant is sufficient and can be obtained at low cost. Thirdly, in the pre-coat method,
If the band steel is not painted while keeping a wide range of slits to the required material width of the shaped steel to be formed, the painting cost will be extremely high, so it is usually
However, even if a wide steel strip is pre-painted, when it is slit to match the required material width of the shape steel to be formed, the two horns will be unpainted, so this Parts require painting after molding, 2
It takes time and effort, and the painting cost increases, etc.
There is.

この発明は上記事情に芒みてなされたもので、良好な塗
着効率、均一な塗膜厚み、塗膜に損傷のない良好な塗装
品質、低い塗装コスト等の塗装軽量形鋼を得る上で要求
される諸条件を満たすことのでさる塗装軽量形鋼の製造
方法を得ることを目的とする。
This invention was made in consideration of the above circumstances, and meets the requirements for obtaining coated lightweight section steel, such as good coating efficiency, uniform coating thickness, good coating quality without damage to the coating, and low coating cost. The purpose of this study is to obtain a method for manufacturing coated lightweight section steel that satisfies the various conditions described above.

[問題点を解決するための手段1 本発明では上記問題、αを解決するために、冷間ロール
成形設備における成形スタンドより上流側で帯鋼の表裏
いずれか一方に塗料を塗布し、次いで乾燥させる工程と
、続く成形スタンドにおいて前記塗装された帯鋼をその
塗装面側が内面となるように形鋼に成形する工程と、成
形された形鋼の未塗装の外面側を塗装する工程とを含む
構成とした。
[Means for Solving the Problem 1] In the present invention, in order to solve the above problem α, a paint is applied to either the front or back of the steel strip on the upstream side of the forming stand in the cold roll forming equipment, and then the paint is dried. forming the painted steel strip into a section steel so that the coated side becomes the inner surface in a subsequent forming stand; and painting the unpainted outer surface of the formed section steel. The structure is as follows.

[作用1 成形前に塗装される面は成形後の形鋼の内面となる面の
みであるから、その塗装面は他に接触することが少なく
塗膜に傷が付きにくいし、特に、成形に際して外面と比
べてロール傷が付きにくく塗膜の損傷が少ない。
[Effect 1: The only surface to be painted before forming is the surface that will become the inner surface of the shaped steel after forming, so the painted surface is less likely to come into contact with other objects and the coating film is less likely to be damaged, especially during forming. Compared to the outside surface, roll scratches are less likely to occur and there is less damage to the paint film.

また、内面の曲げコーナ一部は圧縮となるが、塗膜は圧
縮には比較的強いので、外面の曲げコーナ一部に塗膜が
ある場合に生じる割れ等の損傷の問題が生じない。
Further, although a portion of the bent corner of the inner surface is compressed, the coating film is relatively strong against compression, so there is no problem of damage such as cracks that would occur if there is a coating film on a portion of the bent corner of the outer surface.

また、成形面塗装面は帯鋼の状態であるから、塗着効率
のよいロールコータによる塗料の塗布が可能であり、か
つ、ブラインドコーナ部分がないから塗布面全面に充分
な紫外ik!?照射を行うことが可能である。
In addition, since the painted surface of the molded surface is in the form of a steel band, it is possible to apply the paint using a roll coater with high coating efficiency, and since there are no blind corners, sufficient ultraviolet ik! ? It is possible to perform irradiation.

また、成形後に塗装されるのは外面のみであり、ブライ
ンドコーナ部分はないから、紫外線等照射による乾燥固
化が可能で紫外線硬化型塗料等による塗装法が可能であ
り、また、エアレス塗装機等による吹き付は塗装によっ
ても塗料の均一な塗布を行うことが比較的容易である。
In addition, since only the outer surface is painted after molding and there are no blind corners, it is possible to dry and solidify by irradiation with ultraviolet rays, etc., and painting with ultraviolet curing paint is possible. Spraying is also relatively easy to uniformly apply paint.

また、内面は既に塗装されているから外面塗装中は、製
品を内面で支持することがでさ、また、二ツノも当然容
易に塗装できるから、手直し塗装の必要がない。
In addition, since the inner surface has already been painted, the product can be supported on the inner surface while the outer surface is being painted, and since the two horns can also be easily painted, there is no need for repainting.

[実施例] 以下、本発明の一実施例を図面にしたがって説明する。[Example] An embodiment of the present invention will be described below with reference to the drawings.

第1図は、本発明方法を適用した塗装軽量形鋼!1造設
備の全体側面図で、この塗装軽量形鋼製造設イ1により
本発明の一実施例を説明すると、アンコイラ10に支持
されたコイル状の帯w411は、ピンチロール12によ
り送り出され、レベ513により平坦化される。
Figure 1 shows painted lightweight section steel to which the method of the present invention has been applied! One embodiment of the present invention will be explained using this coated lightweight section steel manufacturing equipment 1 with an overall side view of the 1 construction equipment. It is flattened by 513.

次いで洗浄装置14により帯鋼11の下面が脱脂洗浄さ
れ、乾燥炉15により乾燥され、次いで、クールコータ
16により帯鋼11の下面に塗料が塗布される。このロ
ールコータ1Gは、塗料ハツト17内の塗料を塗料補給
ロール18によりコーターロール19の表面に補給し、
このコーターロール19により帯w411に塗料を塗布
する。
Next, the lower surface of the steel strip 11 is degreased and cleaned by the cleaning device 14, dried in the drying oven 15, and then a paint is applied to the lower surface of the steel strip 11 by the cool coater 16. This roll coater 1G replenishes the paint in the paint hat 17 onto the surface of the coater roll 19 using the paint replenishment roll 18,
The coater roll 19 applies paint to the band w411.

下面に塗料が塗布された帯鋼11は、乾燥炉20に入り
塗料の乾燥硬化が行なわれる。第2図(11)はこの段
階の帯鋼11の断面を示し、Pは塗膜である。前記ロー
ルコータ16で使用する塗料は、紫外線硬化型塗料、あ
るいは、電子線硬化型塗料を用い、この乾燥装置20で
は、使用する塗料に対応して、紫外線ランプ、あるいは
電子線加速器を設置する。
The steel strip 11 whose lower surface is coated with paint enters a drying oven 20 where the paint is dried and hardened. FIG. 2 (11) shows a cross section of the steel strip 11 at this stage, and P is a coating film. The paint used in the roll coater 16 is an ultraviolet curing type paint or an electron beam curing type paint, and the drying device 20 is equipped with an ultraviolet lamp or an electron beam accelerator depending on the type of paint used.

下面の塗装が施された帯鋼11は、冷間ロール成形機2
1により例えば前記第4図のごときC形wIiに成形す
るが、この場合、第2図(iii)に示すごとく、断面
が下向き開放となるように成形して、下面、すなわち、
塗装済みの面が内面となるようにする。なお、22は成
形機入側に設けられるピンチロール、23は帯鋼11を
順次折り曲げて所定の断面に成形する成形スタンド、2
4は成形スタンド23で成形された成形材のそり、曲が
り、キャンバを矯正する矯正機である。
The steel strip 11 whose lower surface has been painted is transferred to a cold roll forming machine 2.
1, for example, into a C-shape wIi as shown in FIG. 4. In this case, as shown in FIG.
Make sure the painted surface is the inside surface. In addition, 22 is a pinch roll provided on the inlet side of the forming machine, 23 is a forming stand that sequentially bends the steel strip 11 and forms it into a predetermined cross section;
Reference numeral 4 denotes a straightening machine that corrects warpage, bending, and camber of the molded material formed by the molding stand 23.

塗装面が内面となるように成形されたC形鋼1は、洗浄
装置25によりその外面および両エツジが脱脂洗浄され
、乾燥炉26により乾燥され、次いで塗装装置27によ
り外面および両エツジに塗料が塗布され、続く乾燥炉2
8により塗料の乾燥硬化が行なわれる。fjS2図(i
v)はこの段階の断面を示す。
The C-shaped steel 1, which is formed so that the painted surface is the inner surface, has its outer surface and both edges cleaned and degreased by a cleaning device 25, dried in a drying oven 26, and then coated with paint on the outer surface and both edges by a coating device 27. Applied and followed by drying oven 2
8, the paint is dried and hardened. fjS2 diagram (i
v) shows the cross section at this stage.

前記塗装装置27では、例えばエアレス塗vc機を使用
し、第3図のごとく周囲に配した/Xル29から加圧し
た塗料を噴射して外面の吹き付は塗装を行うが、塗装中
のC形鋼1は、ウェブ部11)の内面を保持ローラ30
により保持される。
In the coating device 27, for example, an airless coating machine is used, and as shown in Fig. 3, pressurized paint is sprayed from / The C-shaped steel 1 holds the inner surface of the web portion 11) with a roller 30.
is maintained by

この内面は既に塗装、乾燥済みであるから、保持するた
めに塗膜に傷が付くことはない。
Since this inner surface has already been painted and dried, the paint film will not be scratched in order to hold it.

前記塗装装置27で用いる塗料は、成形前の塗装と同じ
く、紫外線、または、電子線硬化型塗料とする。
The paint used in the coating device 27 is an ultraviolet ray or electron beam curable paint, similar to the coating before molding.

前記乾燥炉28は、使用土る塗料に対応して、紫外線照
射、あるいは、電子線照射による乾燥炉とする。
The drying oven 28 is a drying oven that uses ultraviolet irradiation or electron beam irradiation, depending on the type of paint used.

その後、走間切断機31によr+c形鋼を切断し、ラナ
ウトテーブル32により送り出す。こうして、塗装軽量
形鋼の製造が連続して行なわれる。
Thereafter, the R+C section is cut by a running cutter 31 and sent out by a runout table 32. In this way, the production of coated lightweight sections is carried out continuously.

なお実施例では、成形後の塗装の際の内面保持を容易に
行えるように、成形前の塗装は帯鋼の下面に行い、成形
スタンド23においてはC形鋼の断面が下向き開放とな
るように成形したが、これとは逆に、成形前の塗装は帯
鋼の上面に行い、成形スタンド23においては上向き開
放となる成形を行うこともできる。この場合には、成形
後の塗装の際の保持は、リップ部1aの内面等で行うと
よい。
In the example, in order to easily maintain the inner surface during painting after forming, the painting before forming was applied to the lower surface of the steel strip, and in the forming stand 23, the cross section of the C-shaped steel was opened downward. However, on the contrary, the upper surface of the steel strip may be painted before forming, and the forming stand 23 may be formed to open upward. In this case, holding during painting after molding is preferably performed on the inner surface of the lip portion 1a.

また、実施例では、成形前の塗装装置として口−ルコー
タ16を使用したが、これに限らず、加圧空気を利用す
るスプレーガンによる方法、あるいは、エアレス塗装機
による方法、その他平板の片面を塗装するに適した種々
の塗装方法を採用することができる。  また、成形後
の塗装装置27についても、エアレス塗装機による方法
に限らず、形鋼の外面を塗装する1こ適した種々の塗装
方法を採用することができる。
In addition, in the embodiment, a coater 16 was used as a coating device before forming, but the method is not limited to this, and methods using a spray gun using pressurized air, methods using an airless coating machine, and other methods for coating one side of a flat plate are also possible. Various coating methods suitable for painting can be employed. Furthermore, the coating device 27 after forming is not limited to the method using an airless coating machine, but can employ various coating methods suitable for coating the outer surface of the shaped steel.

また、実施例のごとく紫外線、あるいは、電子線硬化型
塗料を使用すれば、塗料の乾燥硬化時間が極めて短いの
で、乾燥炉20.27のスペースが狭く済むばかりでな
く、成形機のラインスピードに対応して塗装を行うこと
を実用的に可能とするが、必ずしもそれらに限るもので
なく、成形機のラインスピードに対応できるものであれ
ばよい。
Furthermore, if an ultraviolet ray or electron beam curable paint is used as in the example, the drying and curing time of the paint is extremely short, which not only reduces the space for the drying oven 20 and 27, but also reduces the line speed of the molding machine. Although it is practically possible to perform coating in a corresponding manner, it is not necessarily limited to these, and any coating that can correspond to the line speed of the molding machine may be used.

また、内外面(=使用する塗料は必ずしも同一である必
要はなく、塗膜の性状を考慮し使い分けすることも可能
である。例えば、内面は速乾性と耐食性を重視し、外面
は耐食性とスクラッチに耐える硬い仕上がりを重視して
塗料を選定する。
In addition, the inner and outer surfaces (= The paints used do not necessarily have to be the same, and can be used differently depending on the properties of the coating film. For example, the inner surface should focus on quick drying and corrosion resistance, and the outer surface should have corrosion resistance and scratch resistance. Paints should be selected with an emphasis on a hard finish that can withstand harsh conditions.

また、実施例では、C形鋼を対象としたが、これに限ら
ず、溝形鋼を始め、種々の形鋼を対象とすることができ
る。
Further, in the embodiment, the target is C-shaped steel, but the present invention is not limited to this, and various types of shaped steel can be used, including channel steel.

[発明の効果] 以上説明したように本発明方法によれば、成形スタンド
の上流側で形鋼の内面となる帯鋼の一方の面を塗装し、
冷間ロール成形機で形鋼に成形した後に形鋼の外面を塗
装するものであるので、次のような種々の優れrこ効果
を奏する。
[Effects of the Invention] As explained above, according to the method of the present invention, one surface of the steel strip, which becomes the inner surface of the shaped steel, is painted on the upstream side of the forming stand,
Since the outer surface of the shaped steel is painted after it is formed into a shaped steel using a cold roll forming machine, it has various excellent effects as described below.

い)形鋼の内面は、成形前の帯鋼の状態で塗装するから
、ロールコータによる塗装を行うことができ、塗着効率
を向上させることができる。仮に、ロールコータによら
ずスプレーがンその他の塗装方法によったとしても、塗
りにくさがないから、塗料の無駄な消費を少なくするこ
とが′g易であるし、また、塗料を均一に塗布すること
ができ、無用に厚く塗布して不経済になることもない。
b) Since the inner surface of the shaped steel is coated in the state of the strip steel before forming, it can be coated with a roll coater and the coating efficiency can be improved. Even if you use a spray gun or other painting method instead of a roll coater, it will not be difficult to apply, so it is easy to reduce unnecessary consumption of paint, and it is easy to apply the paint evenly. It can be applied easily and does not become uneconomical due to unnecessarily thick application.

(ii)  形鋼の外面は成形後に塗装されるから、外
面の曲げコーナ一部の塗膜が引っ張りにより割れるとい
う問題は生じない。また、外面は、池との接触により、
あるいは、成形スタンドにおいて折つ曲げていく際に内
面と比べて塗膜に傷が付き易いが、成形後に塗装するの
であるから、この点でも好ましく、塗膜損傷の少ない良
好な塗装品質を得ることができる。
(ii) Since the outer surface of the section steel is painted after forming, there is no problem of the coating film cracking on a part of the bent corner of the outer surface due to tension. In addition, due to contact with the pond, the outer surface
Alternatively, the paint film is more easily damaged than the inner surface when it is bent on a molding stand, but since it is painted after molding, it is preferable in this respect as well, and good paint quality with less damage to the paint film can be obtained. I can do it.

(iii)  成形後に塗装するのは外面であるから、
紫外線照射、あるいは、電子線照射の際に陰になる部分
が生じないように照射することができ、したがって、乾
燥時間が極めて短い紫外線硬化型塗料、あるいは、電子
線硬化型塗料による塗装法を採用することが可能となる
。したがって、乾燥装置の部分を、ひいては、塗装軽量
形v4製造ライン全体を短くすることができ、成形と塗
装とを一貫したラインで行う本発明方法の実際的な適用
が容易となり、また、設置a′c2を安価にすることが
できる。
(iii) Since it is the outer surface that is painted after molding,
Adopts a coating method that uses ultraviolet ray curable paint or electron beam curable paint, which can be irradiated without leaving any shaded areas during ultraviolet irradiation or electron beam irradiation, and therefore has an extremely short drying time. It becomes possible to do so. Therefore, it is possible to shorten the drying device and, by extension, the entire painting lightweight type V4 production line, making it easier to practically apply the method of the present invention in which molding and painting are carried out in an integrated line, and the installation a. 'c2 can be made inexpensive.

(iv)  予め両面を塗装した幅の広い帯鋼を成形す
べき形鋼の所要材料幅にスリットしてから成形する従来
のプレコート法では、エツジの塗装を成形後に必要とす
るが、本発明では帯鋼のエツジは表裏いずれか一方の塗
装の際に塗装することができるから、そのような煩雑な
作業は要しない。
(iv) In the conventional pre-coating method, in which a wide steel strip coated on both sides is slit to the required material width of the steel section to be formed, and then formed, the edges must be painted after forming. Since the edges of the steel strip can be painted when painting either the front or back sides, such complicated work is not necessary.

以上のごとく本発明によれば、アフターコート法および
プレコート法のそれぞれの長所が有効に生かされるもの
である。
As described above, according to the present invention, the respective advantages of the aftercoat method and the precoat method are effectively utilized.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明方法を適用した一実施例の塗装軽量形銅
製造設備の全体側面図、第2図(i)、(ii)、(i
ii)、(iv)はそれぞれ第1図におけるIT(i)
−H(i)線、II(ii)−IIいi)線、U(ii
i)   Hiii )tQ 、II (’+v)−I
I(iv)線の各断面図、t53図は第1図におけるI
II−III線断面図、第4図はC形鋼の断面し1であ
る。 1・・・C形鋼(軽量形鋼)、11・・・帯鋼、16・
・・ロールコータ(塗装装置)、20.28・・・乾燥
炉、21・・・冷間ロール成形機、23・・・成形スタ
ンド、27・・・塗装装置
Fig. 1 is an overall side view of painted lightweight copper manufacturing equipment according to one embodiment of the method of the present invention, and Fig. 2 (i), (ii), (i)
ii) and (iv) are IT(i) in FIG. 1, respectively.
-H(i) line, II(ii)-IIi) line, U(ii)
i) Hiii)tQ , II ('+v)-I
Each cross-sectional view of line I(iv), t53, is I in Figure 1.
A cross-sectional view taken along the line II-III, FIG. 4 is a cross-sectional view 1 of a C-shaped steel. 1...C section steel (lightweight section steel), 11...Strip steel, 16.
...Roll coater (painting device), 20.28...Drying oven, 21...Cold roll forming machine, 23...Forming stand, 27...Coating device

Claims (1)

【特許請求の範囲】[Claims] 冷間ロール成形設備における成形スタンドより上流側で
帯鋼の表裏いずれか一方に塗料を塗布し、次いで乾燥さ
せる工程と、続く成形スタンドにおいて前記塗装された
帯鋼をその塗装面側が内面となるように形鋼に成形する
工程と、成形された形鋼の未塗装の外面側を塗装する工
程とを含む塗装軽量形鋼の製造方法。
A process of applying paint to either the front or back of the steel strip on the upstream side of the forming stand in cold roll forming equipment and then drying it, and then applying the painted steel strip in the subsequent forming stand so that the coated side becomes the inner surface. A method for manufacturing a coated lightweight section steel comprising the steps of forming the shaped steel section into a section steel, and painting the unpainted outer surface of the formed section steel.
JP23584385A 1985-10-22 1985-10-22 Production of coated lightweight shape steel Pending JPS6295180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23584385A JPS6295180A (en) 1985-10-22 1985-10-22 Production of coated lightweight shape steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23584385A JPS6295180A (en) 1985-10-22 1985-10-22 Production of coated lightweight shape steel

Publications (1)

Publication Number Publication Date
JPS6295180A true JPS6295180A (en) 1987-05-01

Family

ID=16992086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23584385A Pending JPS6295180A (en) 1985-10-22 1985-10-22 Production of coated lightweight shape steel

Country Status (1)

Country Link
JP (1) JPS6295180A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0890055A (en) * 1994-09-22 1996-04-09 Soufuku Koki Kk Continuous production equipment of steel shape having coating film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0890055A (en) * 1994-09-22 1996-04-09 Soufuku Koki Kk Continuous production equipment of steel shape having coating film

Similar Documents

Publication Publication Date Title
US6746535B2 (en) Apparatus for spray coating a continuously advancing article
JPH02261570A (en) Coating method with metallic water paint
CN107326327A (en) Car light exterior trim is aluminized the manufacture method of workpiece
KR101916442B1 (en) A manufacturing process of color-pad
JPS6295180A (en) Production of coated lightweight shape steel
CN110252615A (en) A kind of aluminium sheet roll coating process
JPH0987820A (en) Hot dip galvanized steel sheet, and coated steel sheet using same
CN208473199U (en) Package assembly for keel and the keel component including it
JPS591636A (en) Manufacture of bright painted plated steel sheet
JP2828648B2 (en) Repair paint for pearl coating and its repair method
JP2007050369A (en) Powder coating method using zinc dust-containing powder paint and powder-coated article
JPH0418961A (en) Coating method
JPH06190338A (en) Method for coating dividedly automotive body
JPS5837874B2 (en) Paint film streak pattern formation method
JPS6019073A (en) Preparation of modified precoated steel plate
JPH067724A (en) Coated steel sheet manufacturing facility
JP2656607B2 (en) Painting method
JPH01210081A (en) Coating method
JPH01210080A (en) Coating method
JP2005118621A (en) Coating method of outdoor installed box body
JPS596966A (en) Top-coating of automobile body
CN113502525A (en) Method for electrophoretic coating and powder spraying two-coating one-baking
JPS6462477A (en) Pretreatment in continuous painting line of steel strip
JPH06170332A (en) Manufacture of colored plated steel sheet
JPS5889975A (en) Dichromatic coating method