JPH01139178A - Baking method for coated metallic sheet - Google Patents
Baking method for coated metallic sheetInfo
- Publication number
- JPH01139178A JPH01139178A JP29504187A JP29504187A JPH01139178A JP H01139178 A JPH01139178 A JP H01139178A JP 29504187 A JP29504187 A JP 29504187A JP 29504187 A JP29504187 A JP 29504187A JP H01139178 A JPH01139178 A JP H01139178A
- Authority
- JP
- Japan
- Prior art keywords
- baking
- zone
- metal plate
- solvent
- constant temperature
- 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
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002904 solvent Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 239000003973 paint Substances 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 230000037303 wrinkles Effects 0.000 abstract description 17
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 24
- 238000001723 curing Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001227 electron beam curing Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は塗装金属板の焼付方法に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a method for baking painted metal plates.
（従来の技術）
従来、塗装金属板の焼付方法としては主に熱風加熱方式
が用いられており、他に赤外線加熱方式や高周波誘導加
熱方式なども一部用いられており、また近年になり紫外
線硬化方式や電子線硬化方式なども用いられるようにな
った。(Prior art) Traditionally, hot air heating has been mainly used as a baking method for painted metal plates, and infrared heating and high-frequency induction heating have also been used to some extent. Curing methods and electron beam curing methods have also come into use.
（発明が解決しようとする問題点）
これらはいずれも塗料として溶剤をかなり含んだものを
使用しており、紫外線硬化方式や電子線硬化方式の場合
でも溶剤を含んだ塗料が使用されることがあり、次のよ
うな問題点がある。(Problem to be solved by the invention) All of these use paints that contain a considerable amount of solvent, and even in the case of ultraviolet curing method and electron beam curing method, paints containing solvent are sometimes used. Yes, there are the following problems.
■熱風加熱方式では塗料の外側から熱が金属板に伝わる
ため、溶剤を蒸発揮散させる過程においてはゆっ（つと
した加熱で塗料中の溶剤を追い出す必要がある。このた
め溶剤揮散のための部分が熱風加熱炉全体の半分以上の
炉長を必要とし、全体が長い加熱炉とならざるを得ない
。■In the hot air heating method, heat is transmitted from the outside of the paint to the metal plate, so in the process of evaporating and evaporating the solvent, it is necessary to heat the solvent slowly to expel the solvent from the paint. This requires a furnace length that is more than half the length of the entire hot-air heating furnace, and the entire heating furnace has to be long.
また、赤外線加熱や高周波誘導加熱方式においても、塗
料自体および金属板側から加熱されるにしても、蒸発し
た溶剤を排気するための熱風または温風を併用する必要
があり、熱風加熱炉と類似の溶剤揮散（以下フラッシュ
オフと称する）ゾーンが必要となる。In addition, in infrared heating and high-frequency induction heating methods, even if the paint itself and the metal plate are heated, it is necessary to use hot air or warm air to exhaust the evaporated solvent, which is similar to a hot air heating furnace. A solvent volatilization (hereinafter referred to as flash-off) zone is required.
■フラッシュオフゾーンにおいては、塗料の表面仕上り
を゛よくするため風速をあまり大きくすることができな
い、風速が大きいと塗装面にシワや波打ちなどの風紋が
生じるし、また塗装のワキが発生して表面仕上りが悪く
なってしまう、このため、いずれにしろ風速を小さくす
る必要があり、特に熱風加熱方式では加熱速度が低（な
り、７ラツシユオ７ゾーンが長くなる。■In the flash-off zone, in order to improve the surface finish of the paint, it is not possible to increase the wind speed too much.If the wind speed is high, wind ripples such as wrinkles and waves will occur on the painted surface, and it will also cause wrinkles in the paint. The surface finish deteriorates, so in any case it is necessary to reduce the wind speed, and especially in the hot air heating method, the heating speed becomes low (7 rays and 7 zones become long).
■フラッシュオフゾーンにおける溶剤揮散が適切でない
と、次の硬化焼付（以下キユアリングと称する）過程に
おいて微小ワキなどの欠陥が生じやすく、かつキユアリ
ング時間を長くとる必要が生じ、加熱炉のキユアリング
ゾーンも艮くせざるを得なくなる。■If the solvent volatilization in the flash-off zone is not appropriate, defects such as minute cracks will easily occur in the next hardening and baking (hereinafter referred to as curing) process, and it will be necessary to take a long curing time, and the curing zone of the heating furnace will also be affected. I have no choice but to dress up.
本発明はこれらの問題点に鑑み、高い焼付速度で短時間
に良好な表面仕上りの塗装金属板を得ることので終る焼
付方法を提供する。In view of these problems, the present invention provides a baking method that achieves a coated metal plate with a good surface finish in a short time at a high baking rate.
（問題点を解決するための手段）
本発明は、金属板に塗料を塗布し、塗料中に含まれる溶
剤を揮散させながら焼付ける方法において、金属板を７
ラフシエオ７ゾーンとしての電気エネルギーを利用した
第１焼付炉で加熱した後、該金属板を定温保持ゾーンに
導き、該金属板を一定温度に保持しながら溶剤を揮散さ
せた後、キュ７リングゾーンとしての電気エネルギーを
利用した第２焼付炉に導いて塗装焼付けることを特像と
する塗装金属板の焼付方法である。定温保持ゾーンにお
いて、塗装金属板の保持温度を８０〜１８０℃、保持時
間を３〜１０秒間、排気風速を１〜１０ ｍ／ ｓｅｃ
とすること、第１焼付炉および第２焼付炉において、電
気エネルギーを利用した赤外線焼付炉あるいは高周波誘
導焼付炉とすること、第１焼付炉、定温保持ゾーンおよ
び第２焼付炉において、排気に使用するう（体として１
００〜２００℃のクリーンエヤーあるいは窒素とするこ
とは好ましい。(Means for Solving the Problems) The present invention provides a method for coating a metal plate with a paint and baking it while volatilizing the solvent contained in the paint.
After being heated in the first baking furnace that uses electrical energy as the Rafshieo 7 zone, the metal plate is led to a constant temperature holding zone, where the solvent is volatilized while maintaining the metal plate at a constant temperature, and then the metal plate is heated to a constant temperature holding zone. This is a method of baking a painted metal sheet, which is characterized by introducing the electric energy into a second baking furnace to bake the coating. In the constant temperature holding zone, the holding temperature of the painted metal plate is 80 to 180°C, the holding time is 3 to 10 seconds, and the exhaust air speed is 1 to 10 m/sec.
The first baking furnace and the second baking furnace should be infrared baking furnaces or high-frequency induction baking furnaces that use electrical energy.The first baking furnace, constant temperature holding zone, and second baking furnace should be used for exhaust Suruu (1 as a body)
It is preferable to use clean air or nitrogen at a temperature of 00 to 200°C.
（作用）
本発明は、フラッシュオフゾーンである第１焼付炉にお
いて、それぞれの塗装金属板を加熱して、塗料中の溶剤
の大部分を揮散させた後、その直後に定温保持を設けて
、該金属板を一定温度に一定時間保持しながら更に溶剤
の排気を行なった後、キユアリングゾーンである第２硬
化焼付炉に導いて塗装焼付けし、短時間にワキ、シワ、
ハノキなどのない良好な表面仕上りの塗装金属板を得る
ものである。(Function) The present invention heats each coated metal plate in the first baking furnace, which is the flash-off zone, to volatilize most of the solvent in the paint, and then immediately thereafter maintains the temperature at a constant temperature. After further evacuation of the solvent while holding the metal plate at a constant temperature for a certain period of time, it is led to a second hardening baking furnace, which is a curing zone, and the coating is baked, removing wrinkles and wrinkles in a short time.
To obtain a coated metal plate with a good surface finish without any wood chips or the like.
従来通常の熱風加熱法による＾速の金属板塗装フィンに
おいては、加熱しながらフラッシュオフするには塗装表
面のシワやワキの発生をおさえるため高い風速を用いる
ことができず、長時間を要し、７ラツシエオ７ゾーンで
ある第１焼付炉が艮いものとなる０本発明では、各塗料
組成に最適な板温上昇速度を自由に制御できる赤外線加
熱法や高周波誘導加熱法などの電気エネルギーを利用す
る方法を用いて、第１焼付炉を使用することにより、最
短の時間で一定の７ラフシユオ７板温まで加熱を行ない
、第１焼付炉においてまず表面仕上りのよい塗装金属板
を得る。Conventionally, with metal plate coating fins made using the normal hot air heating method, it takes a long time to flash off while heating because high air velocity cannot be used to prevent wrinkles and wrinkles from forming on the coating surface. In the present invention, the first baking furnace, which is the 7th zone of the 7th Lassieo, is unique.In the present invention, electric energy is By using the method utilized, by using the first baking furnace, heating is carried out to a constant 7 roughh 7 sheet temperature in the shortest time, and a coated metal plate with a good surface finish is first obtained in the first baking furnace.
従来の焼付方法ではこのあと連続的に板温を上昇させる
ため、このような限界条件ではワキが発生してしまうが
、本発明では次に板温の上昇を行なわず、定温保持ゾー
ンにおいて塗装金属板を一定の７？ッシュオ７温度に一
定時間保持する。ここで、７ラツシユオ７温度で揮散し
つつあった溶剤は更に完全に排気され、塗膜は良好な状
態が保たれ、次に第２焼付炉におけるキユアリングにふ
されしい塗膜状態を得る。定温保持ゾーンにおける塗装
金属板の保持温度は、塗料中の樹脂や溶剤組成により異
な１が、８０℃以下では中沸点以上の溶剤が十分に揮散
せず、１８０℃以上では高沸点溶剤まで揮散してしまい
、次のキユアリングゾーンで良好な塗膜が形成されない
ので、８０〜１８０℃が好ましい。ａ装金属板の保持時
間は、３秒間以下では溶剤の揮散が十分でな（、また１
０秒問以上ではほとんどその効果がかわらず、かつ定温
保持ゾーンの長さが長くなり、不利となるので３〜１０
秒間が好ましい。排気風速は１ｓ／ｓｅｅ以ドでは時間
がかかり、１０ ｍｌ ｓｅｃ以上では塗装面のシワな
どが発生し、良好な表面仕上りが得られないので、１〜
１０ ＠／ ｓｅｅが好ましい。In the conventional baking method, the plate temperature is raised continuously after this, and under such limit conditions, wrinkles occur, but in the present invention, the plate temperature is not raised next, and the coated metal is heated in the constant temperature holding zone. A certain 7 on the board? Hold at 7 temperature for a certain period of time. At this point, the solvent that had been volatilizing at the temperature of 70°C is further completely exhausted, and the coating film is maintained in a good condition, resulting in a coating film condition suitable for curing in the second baking furnace. The holding temperature of the painted metal plate in the constant temperature holding zone varies depending on the resin and solvent composition in the paint1, but if it is below 80℃, solvents with medium boiling points or higher will not volatilize sufficiently, and if it is above 180℃, even high boiling point solvents will volatilize. The temperature is preferably 80 to 180°C, since this may prevent a good coating film from being formed in the next curing zone. If the holding time of the a-coated metal plate is 3 seconds or less, the solvent will not volatilize sufficiently (or 1
If it is longer than 0 seconds, the effect will hardly change, and the length of the constant temperature holding zone will become longer, which is disadvantageous, so 3 to 10
Seconds are preferred. If the exhaust air speed is less than 1 s/see, it will take a long time, and if it is more than 10 ml sec, wrinkles will occur on the painted surface and a good surface finish will not be obtained.
10 @/see is preferred.
次に、キエ７りングゾーンである第２の焼付炉には、短
時間でキユアリングするため赤外線加熱や高周波誘導加
熱などの電気エネルギーを利用した第２焼付炉を用いる
。また、紫外線硬化型や電子線硬化型の塗料を使用する
場合には、紫外線照射法や電子線照射法などの放射線を
利用した焼付炉を用いる。これら電気エネルギーを利用
する方法は、熱風加熱り式に比べて急速に短時間の焼付
が可能であるばかりでなく、排気用気体に比較的温度の
低いクリーンエヤーや窒素を用いることができ、ゴミ、
ブツなどの欠陥のない塗装鋼板を得ることができる。Ｉ
ＮＮ気気気体温度は、１００℃以下では塗装金属板や炉
体の温度を低下を招きやすく、２００℃以上では他の焼
付方式の温度制御に干渉を及ぼしやすいので１００〜２
００℃が好ましい。Next, a second baking furnace, which is a curing zone, uses electric energy such as infrared heating or high-frequency induction heating to cure in a short time. Furthermore, when using an ultraviolet curing type or an electron beam curing type paint, a baking furnace using radiation such as an ultraviolet irradiation method or an electron beam irradiation method is used. These methods that utilize electrical energy not only enable faster and shorter baking times compared to hot air heating methods, but also allow the use of relatively low-temperature clean air or nitrogen as the exhaust gas. ,
It is possible to obtain a painted steel plate without defects such as spots. I
When the NN gas temperature is below 100℃, it tends to lower the temperature of the painted metal plate and the furnace body, and when it is above 200℃, it tends to interfere with the temperature control of other baking methods, so the temperature should be set at 100 to 2.
00°C is preferred.
塗料の溶剤含有率が大きい場合には、本発明の応用とし
て第１焼付炉および定温保持ゾーンを２組以上使用する
ことにより、通常の溶剤含有率の塗料と同等の短時間で
表面仕上りの良好な塗装金属板を得ることが可能となる
。When the solvent content of the paint is high, by using two or more sets of the first baking oven and constant temperature holding zone as an application of the present invention, a good surface finish can be achieved in a short time equivalent to that of a paint with a normal solvent content. It becomes possible to obtain a painted metal plate.
塗膜の硬化膜厚が１０μ未満の如く薄い塗料やプライマ
ーなどの場合には定温保持ゾーンの保持時間は３秒問以
下でも良いことがあるが、一般的に使用されることの多
い１０μ以上の硬化膜厚を得るには本発明は極めて大き
な効果を発揮し、膜厚が厚いほどその効果は大きい。In the case of thin paints or primers with a cured film thickness of less than 10μ, the holding time in the constant temperature holding zone may be less than 3 seconds, but when the cured film thickness is 10μ or more, which is often used, The present invention is extremely effective in obtaining a cured film thickness, and the thicker the film thickness, the greater the effect.
（実施例）
［実施例１］
第１図に示す第１焼付炉１、第２焼付炉２、定温保持ゾ
ーン３よりなる装置を用いて本発明を実施した。Ｍ１焼
付炉１および＃＆２焼付炉２は赤外線加熱方式とし、金
属板４として０ 、６ ａｓ厚の冷延鋼板を用い、塗料
には不揮発分（Ｎ、Ｖ、）４０％の畠分子ポリエステル
系の焼付塗料を用い、硬化膜厚を２０μとした。(Example) [Example 1] The present invention was carried out using an apparatus consisting of a first baking furnace 1, a second baking furnace 2, and a constant temperature holding zone 3 shown in FIG. M1 Baking Furnace 1 and #&2 Baking Furnace 2 are of an infrared heating type, a cold rolled steel plate with a thickness of 0.6 as is used as the metal plate 4, and a Hatake molecular polyester-based paint with a non-volatile content (N, V,) of 40% is used. The cured film thickness was set to 20 μm.
焼付条件はフラッシュオフゾーンの到達板温を１５０℃
とし、定温保持ゾーンでの板温を１５０℃で保持し、キ
ユアリングゾーンの到達板温を２３０℃とした。排気用
気体には１５０℃のクリーンエヤーを使用し、その排気
風速は４ｓ／ｓｅｅとした。The baking conditions are the plate temperature reached in the flash-off zone of 150℃.
The plate temperature in the constant temperature holding zone was maintained at 150°C, and the final plate temperature in the curing zone was 230°C. Clean air at 150° C. was used as the exhaust gas, and the exhaust air speed was 4 s/see.
この結果、各ゾーンで要した時間は７ラツシユオ７ゾー
ンが１５秒問、定温保持ゾーンが５秒間、キユアリング
ゾーンが１５秒間の計３５秒間で、シワ、ワキなどのな
い良好な表面仕上りの塗装板が得られた。As a result, the time required for each zone was 15 seconds for the 7 heat zones, 5 seconds for the constant temperature zone, and 15 seconds for the curing zone, for a total of 35 seconds, and the coating had a good surface finish without wrinkles or wrinkles. A board was obtained.
［比較例Ａｌｌ
実施例１より定温保持ゾーン３を省いて焼付な行なった
ところ、実施例１と同じ焼付時間では塗膜にワキが発生
し、フラッシュオフゾーンを３０秒間、キユアリングゾ
ーンを２０秒間の計５０秒間でようやく良好な表面仕上
りの塗装板が得られた。[Comparative Examples All] When baking was carried out by omitting the constant temperature holding zone 3 from Example 1, wrinkles occurred in the coating film with the same baking time as in Example 1, and the flash-off zone was set for 30 seconds and the curing zone was set for 20 seconds. After a total of 50 seconds, a coated board with a good surface finish was finally obtained.
［比較例Ｂｌｌ
第２図に示す第１焼付炉および第２焼付炉２を熱風加熱
方式とし、定温保持ゾーンのない装置により金属板４の
焼付を行った。[Comparative Example Bll The first baking furnace and the second baking furnace 2 shown in FIG. 2 were heated with hot air, and the metal plate 4 was baked using an apparatus without a constant temperature holding zone.
実施例１と同じ金属板および塗料を用いて焼付を行なっ
たところ、実施例１と同じ７ラツシユオ７およびキユア
リング時間では塗膜のワキが発生し、フラッシュオフゾ
ーンに３５秒間、キユアリングゾーンに２５秒間の計６
０秒間でようやく良好な表面仕上りの塗装板が得られた
。When baking was carried out using the same metal plate and paint as in Example 1, under the same 7 lashes and curing time as in Example 1, the coating film developed wrinkles, with 35 seconds in the flash-off zone and 25 seconds in the curing zone. total of 6 seconds
A coated board with a good surface finish was finally obtained in 0 seconds.
Ｉ実施例２］
第１図に示す装置において、第１焼付炉１および第２焼
付炉２を高周波誘導加熱方式として本発明を実施した。I Example 2] In the apparatus shown in FIG. 1, the present invention was implemented using a high-frequency induction heating system for the first baking furnace 1 and the second baking furnace 2.
金属板４として０．６ ａｍ厚の冷延鋼板を用い、塗料
にはＮ、Ｖ、５０％の＾分子ボリエステル系の焼付塗料
を用い、硬化膜厚を１５μとした。A cold-rolled steel plate with a thickness of 0.6 am was used as the metal plate 4, and a baking paint based on molecular polyester containing N, V, and 50% was used as the paint, and the cured film thickness was set to 15 μm.
焼付条件は、フラッシュオフゾーンの到達板温を１５０
℃とし、この温度で定温保持ゾーンにて保持し、キュ７
リングゾーンの到達板温を２３０℃とした。また排気用
気体には１５０℃の窒素を使用し、排気風速は８ｍ／ｓ
ｅｅとして焼付を行った。The baking conditions are as follows: The plate temperature reached in the flash-off zone is 150℃.
℃, keep it at this temperature in the constant temperature holding zone, and
The plate temperature reached in the ring zone was 230°C. In addition, nitrogen at 150°C is used as the exhaust gas, and the exhaust air speed is 8 m/s.
Printing was performed as ee.
その結果、各ゾーンで要した時間はフラッシュオフゾー
ンが１０秒間、定温保持ゾーンが３秒間、キュ７リング
ゾーンが１０秒間の計２３秒間で、良好な表面仕上りの
塗装板が得られた。As a result, the time required in each zone was 10 seconds for the flash-off zone, 3 seconds for the constant temperature holding zone, and 10 seconds for the cueing zone, for a total of 23 seconds, and a coated board with a good surface finish was obtained.
［比較例Ａ２］
実施例２より定温保持ゾーンを省いて焼付を行なったと
ころ、実施例２と同じ焼付時間では塗膜にワキが発生し
、７ラツシユオ７ゾーンに２５秒間、キユアリングゾー
ンに２０秒間の計４５秒間でようやく良好な表面仕上り
の塗装板が得られた。[Comparative Example A2] Baking was carried out by omitting the constant temperature holding zone from Example 2, but with the same baking time as Example 2, wrinkles occurred in the coating film, and the baking time was 25 seconds in the 7th zone and 20 seconds in the curing zone. A coated board with a good surface finish was finally obtained after a total of 45 seconds.
［比較例Ｂ２］
実施例２と同一金属板および塗料を用いて第２図に示す
熱風加熱方式による焼付を行った。実施例２と同じフラ
ッシュオフお上びキユアリング時間では塗膜のワキが発
生し、フラッシュオフゾーンに３０秒間、キユアリング
ゾーンに２０秒間の計５０秒間でようやく良好な表面仕
上りの塗装板が得られた。[Comparative Example B2] Using the same metal plate and paint as in Example 2, baking was performed using the hot air heating method shown in FIG. With the same flash-off and curing time as in Example 2, flaking of the paint film occurred, and a coated board with a good surface finish could only be obtained after 30 seconds in the flash-off zone and 20 seconds in the curing zone, a total of 50 seconds. Ta.
第３図には各側における温度上昇曲線をまとめて示した
。■は実施例１、■は比較例Ａ１、■は比較例Ｂ１を示
す、■は■、■に比べて極めて短い時間で良好な表面仕
上りの塗装板が得られ、焼付炉の長さを短くできること
がわかる。FIG. 3 shows the temperature rise curves on each side. ■ indicates Example 1, ■ indicates Comparative Example A1, and ■ indicates Comparative Example B1. ■ indicates that a coated board with a good surface finish was obtained in an extremely short time compared to ■ and ■, and the length of the baking furnace was shortened. I know what I can do.
（発明の効果）
以上述べた如く、本発明によればフラッシュオフゾーン
の直後に定温保持ゾーンを設けることにより一定の板温
のままで溶剤の排気が完全になされ、次いでキュ７リン
グゾーンに導（ことにより従来の熱風加熱方式や定温保
持ゾーンを設けない単なる赤外線加熱）１式、＾周波誘
導加熱り式などに比べて格段に短い時間でシワ、ワキな
どのない良好な表面仕上りの塗装金属板を得ることが可
能となる。(Effects of the Invention) As described above, according to the present invention, by providing a constant temperature holding zone immediately after the flash-off zone, the solvent is completely evacuated while the plate temperature remains constant, and is then introduced to the cooling zone. (In some cases, conventional hot air heating method or simple infrared heating without constant temperature maintenance zone) 1 set, Painted metal with good surface finish without wrinkles or wrinkles in much shorter time than frequency induction heating method etc. It becomes possible to obtain a board.
第１図は本発明を実施する装置の例を示す図、第２図は
比較例に用いた装置を示す図、第３図は実施例および比
較例における温度上昇曲線を示す図である。
１・・・第１焼付炉、２・・・第２焼付炉、３・・・定
温保持ゾーン、４・・・金属板。FIG. 1 is a diagram showing an example of an apparatus for implementing the present invention, FIG. 2 is a diagram showing an apparatus used in a comparative example, and FIG. 3 is a diagram showing temperature rise curves in the example and the comparative example. DESCRIPTION OF SYMBOLS 1... First baking furnace, 2... Second baking furnace, 3... Constant temperature holding zone, 4... Metal plate.
Claims (4)
揮散させながら焼付ける方法において、金属板をフラッ
シュオフゾーンとしての電気エネルギーを利用した第１
焼付炉で加熱した後、該金属板を定温保持ゾーンに導き
、該金属板を一定温度に保持しながら溶剤を揮散させた
後、キュアリングゾーンとしての電気エネルギーを利用
した第２焼付炉に導いて塗装焼付けることを特徴とする
塗装金属板の焼付方法。(1) In the method of applying paint to a metal plate and baking it while volatilizing the solvent contained in the paint, the first method uses electrical energy to use the metal plate as a flash-off zone.
After being heated in a baking furnace, the metal plate is led to a constant temperature holding zone, where the solvent is volatilized while maintaining the metal plate at a constant temperature, and then led to a second baking furnace that uses electrical energy as a curing zone. A method for baking painted metal plates, characterized by baking the paint.
を８０〜１８０℃、保持時間を３〜１０秒間、排気風速
を１〜１０ｍ／ｓｅｃとする特許請求の範囲第１項記載
の塗装金属板の焼付方法。(2) The coated metal plate according to claim 1, wherein in the constant temperature holding zone, the temperature of the coated metal plate is 80 to 180°C, the holding time is 3 to 10 seconds, and the exhaust air velocity is 1 to 10 m/sec. How to bake.
ルギーを利用した赤外線焼付炉あるいは高周波誘導焼付
炉とする特許請求の範囲第１項記載の塗装金属板の焼付
方法。(3) The method for baking a coated metal sheet according to claim 1, wherein the first baking furnace and the second baking furnace are infrared baking furnaces or high-frequency induction baking furnaces that utilize electrical energy.
おいて、電気に使用する気体として１００〜２００℃の
クリーンエヤーあるいは窒素とする特許請求の範囲第１
項記載の塗装金属板の焼付方法。(4) In the first baking furnace, constant temperature holding zone, and second baking furnace, the gas used for electricity is clean air or nitrogen at a temperature of 100 to 200°C.
Baking method for painted metal plates as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29504187A JPH01139178A (en) | 1987-11-25 | 1987-11-25 | Baking method for coated metallic sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29504187A JPH01139178A (en) | 1987-11-25 | 1987-11-25 | Baking method for coated metallic sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139178A true JPH01139178A (en) | 1989-05-31 |
| JPH0567350B2 JPH0567350B2 (en) | 1993-09-24 |
Family
ID=17815556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29504187A Granted JPH01139178A (en) | 1987-11-25 | 1987-11-25 | Baking method for coated metallic sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139178A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008155237A1 (en) * | 2007-06-20 | 2008-12-24 | Societe De Technologie Michelin | Method for depositing a solute on a metal wire |
| CN113210225A (en) * | 2021-05-14 | 2021-08-06 | 重庆德凯实业股份有限公司 | Novel oven for semi-curing of films |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072931A (en) * | 1973-10-29 | 1975-06-16 |
-
1987
- 1987-11-25 JP JP29504187A patent/JPH01139178A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072931A (en) * | 1973-10-29 | 1975-06-16 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008155237A1 (en) * | 2007-06-20 | 2008-12-24 | Societe De Technologie Michelin | Method for depositing a solute on a metal wire |
| FR2917755A1 (en) * | 2007-06-20 | 2008-12-26 | Michelin Soc Tech | DEVICE AND METHOD FOR DEPOSITING A SOLUTE ON A METAL WIRE |
| JP2010530298A (en) * | 2007-06-20 | 2010-09-09 | ソシエテ ド テクノロジー ミシュラン | Method for depositing solute on metal thread |
| CN113210225A (en) * | 2021-05-14 | 2021-08-06 | 重庆德凯实业股份有限公司 | Novel oven for semi-curing of films |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0567350B2 (en) | 1993-09-24 |
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