JPH0211312B2 - - Google Patents
Info
- Publication number
- JPH0211312B2 JPH0211312B2 JP56197677A JP19767781A JPH0211312B2 JP H0211312 B2 JPH0211312 B2 JP H0211312B2 JP 56197677 A JP56197677 A JP 56197677A JP 19767781 A JP19767781 A JP 19767781A JP H0211312 B2 JPH0211312 B2 JP H0211312B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- ultraviolet
- steel pipe
- rod
- curing
- 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
- 239000003973 paint Substances 0.000 claims description 26
- 239000011261 inert gas Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 35
- 239000010959 steel Substances 0.000 description 35
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
この発明は、例えば、鋼管、棒鋼等の管棒状体
外面に塗布した紫外線硬化塗料を極めて効率よく
硬化させることができる方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for extremely efficiently curing an ultraviolet curable coating applied to the outer surface of a pipe or rod-shaped body such as a steel pipe or a steel bar.
紫外線硬化塗料は、鋼材表面の防錆効果が大き
いことから、近年、鋼板等の他に管棒状体の外面
にも紫外線硬化塗料が塗布されるようになつてき
た。鋼管外面に塗布された紫外線硬化塗料は、例
えば紫外線照射ランプからの紫外線を照射するこ
とによつて硬化させることができるが、その硬化
はできるだけ効率よく行なわれることが望まし
い。 Since UV-curable paint has a great rust-preventing effect on the surface of steel materials, in recent years, UV-curable paint has come to be applied not only to steel plates but also to the outer surfaces of pipe rods. The ultraviolet curing paint applied to the outer surface of the steel pipe can be cured, for example, by irradiating it with ultraviolet light from an ultraviolet irradiation lamp, but it is desirable that the curing be performed as efficiently as possible.
この発明は以上のような事項を考慮してなされ
たもので、
外面に紫外線硬化塗料を塗布した管棒状体を移
動させ、前記管棒状体の外側に配置した紫外線照
射ランプによつて、移動中の前記管棒状体の外面
に塗布した紫外線硬化塗料表面に紫外線を照射
し、かくして前記管棒状体の外面に塗布した紫外
線硬化塗料を硬化させる方法において、
前記管棒状体は、紫外線透過可能な套管中を移
動し、
前記管棒状体の外面に塗布した紫外線硬化塗料
表面には、前記套管を通して紫外線が照射され、
前記套管と前記套管中の前記管棒状体との間に
は、不活性ガスが満たされていることに特徴を有
する。 This invention has been made in consideration of the above-mentioned matters, and it is possible to move a rod-shaped tube whose outer surface is coated with an ultraviolet curing paint, and use an ultraviolet irradiation lamp placed outside the rod-shaped tube to detect the effects of light during movement. In the method of irradiating the surface of the ultraviolet curing paint applied to the outer surface of the tube rod-like body with ultraviolet rays and thus curing the ultraviolet curing paint applied to the outer surface of the tube rod-like body, the tube rod-like body has a mantle that can transmit ultraviolet light. The surface of the ultraviolet curing paint that moves through the tube and is applied to the outer surface of the tube rod-like body is irradiated with ultraviolet rays through the cannula, and between the cannula and the tube rod-like body in the cannula, It is characterized by being filled with inert gas.
以下この発明を実施例により図面を参照しなが
ら説明する。 The present invention will be explained below by way of examples with reference to the drawings.
第１図はこの発明の方法を実施するための硬化
装置の一態様を示す概略縦断正面図、第２図は同
概略縦断側面図である。図において、１は図示し
ない適宜移動手段によつて矢印Ａ方向に水平移動
する鋼管であり、鋼管１の外面には、図示しない
紫外線硬化塗料の塗布装置によつて紫外線硬化塗
料が塗布されている。２は中空円筒状の密閉構造
を持つ、水平に設置されたハウジングであり、ハ
ウジング２の軸方向の両端部中央には、鋼管１を
通過させるための開口２ａが形成されている。 FIG. 1 is a schematic longitudinal sectional front view showing one embodiment of a curing apparatus for carrying out the method of the present invention, and FIG. 2 is a schematic longitudinal sectional side view of the same. In the figure, 1 is a steel pipe that is moved horizontally in the direction of arrow A by an appropriate moving means (not shown), and the outer surface of the steel pipe 1 is coated with an ultraviolet curing paint by an ultraviolet curing paint coating device (not shown). . Reference numeral 2 denotes a horizontally installed housing having a hollow cylindrical sealed structure, and an opening 2a through which the steel pipe 1 passes is formed at the center of both ends of the housing 2 in the axial direction.
ハウジング１内には、両開口２ａを連結するよ
うに、紫外線透過可能な材料としての石英からな
る套管３が設けられている。鋼管１は、一方の開
口２ａから套管３中を通り、ついで他方の開口２
ａから套管３外に出る。 A sleeve tube 3 made of quartz as a material capable of transmitting ultraviolet rays is provided in the housing 1 so as to connect both openings 2a. The steel pipe 1 passes through the sleeve 3 from one opening 2a, and then passes through the other opening 2a.
Exit the cannula 3 from a.
第１図に示すように、ハウジング２の一端外面
には、一方の開口２ａを外側から被うように、環
状枠体４の一端が取付けられている。環状枠体４
の他端開口４ａは、その中を鋼管１が通過可能な
サイズになつている。環状枠体４の他端開口４ａ
と、ハウジング２の他方の開口２ａとには、鋼管
１の外径よりやや小さい径の円孔５ａを中心に形
成したゴム板５がそれぞれ取付けられている。従
つて、環状枠体４および套管３中を鋼管１は通過
し、その際に、２つのゴム板５の各々が、鋼管１
の外面に全周にわたつて接触するので、鋼管１の
外面と、環状枠体４と、套管３とによつて、気密
に保たれた室７が形成される。環状枠体４の周壁
には、N2等の不活性ガスの供給源（図示せず）
からの不活性ガス供給管６が取付けてあり、この
不活性ガス供給管６によつて、環状枠体４内に不
活性ガスが供給される。従つて、環状枠体４内に
供給された不活性ガスは、鋼管１が環状枠体４お
よび套管３中にある状態において、鋼管１の外面
と、環状枠体４と、套管３とによつて形成された
室７内に充満し、ここをO2の極めて少ない不活
性雰囲気にする。 As shown in FIG. 1, one end of an annular frame 4 is attached to the outer surface of one end of the housing 2 so as to cover one opening 2a from the outside. Annular frame 4
The other end opening 4a is sized to allow the steel pipe 1 to pass therethrough. The other end opening 4a of the annular frame 4
and the other opening 2a of the housing 2 are each fitted with a rubber plate 5 formed around a circular hole 5a having a diameter slightly smaller than the outer diameter of the steel pipe 1. Therefore, the steel pipe 1 passes through the annular frame 4 and the sleeve 3, and at that time, each of the two rubber plates 5
The outer surface of the steel pipe 1, the annular frame 4, and the sleeve 3 form a chamber 7 that is kept airtight. A supply source (not shown) of an inert gas such as N2 is provided on the peripheral wall of the annular frame 4.
An inert gas supply pipe 6 is attached to the inert gas supply pipe 6, and inert gas is supplied into the annular frame 4 through this inert gas supply pipe 6. Therefore, the inert gas supplied into the annular frame 4 is applied to the outer surface of the steel pipe 1, the annular frame 4, and the mantle 3 while the steel pipe 1 is in the annular frame 4 and the mantle 3. The gas fills the chamber 7 formed by the gas, creating an inert atmosphere with very little O 2 .
第１図および第２図に示すように、ハウジング
２内において、紫外線を発生する複数本（例え
ば、12〜18本）のランプ８が、鋼管１の外側に位
置し、鋼管１と軸方向が一致し、且つ鋼管１の管
周にそつて等間隔で水平になるように配置されて
いる。各ランプ８は、反射板９ａを有する保持具
９に保持されており、保持具９は、図示しない支
持手段によつてハウジング２に支持されている。
なお、反射板９ａは、ランプ８と同心状になるよ
うに円弧状にわん曲形成されている。従つて、鋼
管１の外面に塗した紫外線硬化塗料表面において
は、各々のランプ８からの紫外線の照射面が互い
に重複して鋼管１の全周にわたつて均一照度分布
が得られる。なお、隣接したランプ８同志は、例
えば鋼管１の管中心角で45゜以下になるような間
隔で配置されていることが好ましい。45゜を越え
ると、ランプ８同志が離れすぎてしまい、鋼管１
の外面に塗布した紫外線硬化塗料表面において均
一照度分布が得られていないからである。また、
鋼管１の外面と、ランプ８との間の距離は、離れ
すぎると照射効率が悪くなるし、近づきすぎると
両者が機械的接触するおそれがあり、且つ均一照
度分布を得ることが困難になる（例えば、この距
離は、鋼管表面より、40〜150mmが望ましい）。 As shown in FIGS. 1 and 2, a plurality of (for example, 12 to 18) lamps 8 that generate ultraviolet light are located outside the steel pipe 1 in the housing 2, and are axially connected to the steel pipe 1. They are arranged horizontally and at equal intervals along the circumference of the steel pipe 1. Each lamp 8 is held by a holder 9 having a reflecting plate 9a, and the holder 9 is supported by the housing 2 by support means (not shown).
Note that the reflection plate 9a is curved in an arc shape so as to be concentric with the lamp 8. Therefore, on the surface of the ultraviolet curing paint applied to the outer surface of the steel pipe 1, the surfaces irradiated with the ultraviolet rays from each lamp 8 overlap with each other, so that a uniform illumination distribution is obtained over the entire circumference of the steel pipe 1. Incidentally, it is preferable that adjacent lamps 8 are arranged at intervals such that, for example, the tube center angle of the steel pipe 1 is 45 degrees or less. If it exceeds 45°, lamp 8 will be too far apart, and steel pipe 1 will
This is because a uniform illuminance distribution is not obtained on the surface of the ultraviolet curing paint applied to the outer surface of. Also,
If the distance between the outer surface of the steel pipe 1 and the lamp 8 is too far, the irradiation efficiency will deteriorate; if the distance is too close, there is a risk of mechanical contact between the two, and it will be difficult to obtain a uniform illuminance distribution ( For example, this distance is preferably 40 to 150 mm from the steel pipe surface).
第１図に示すように、ハウジング２の上端２箇
所には、ランプ８、保持具９、および套管３を冷
却するための冷却ガスの供給用ダクト１０および
排出用ダクト１１が、それぞれハウジング２内と
連通するように取付けられている。従つて冷却ガ
スは、供給用ダクト１０からハウジング２内に入
り、そして排出用ダクト１１からハウジング２外
に至り、その間に、ランプ８、保持具９および套
管３は、冷却ガスによつて冷却される。 As shown in FIG. 1, a cooling gas supply duct 10 and a cooling gas discharge duct 11 for cooling the lamp 8, the holder 9, and the sleeve 3 are provided at two locations at the upper end of the housing 2, respectively. It is installed so that it communicates with the inside. The cooling gas thus enters the housing 2 through the supply duct 10 and out of the housing 2 through the exhaust duct 11, while the lamp 8, the holder 9 and the sleeve 3 are cooled by the cooling gas. be done.
以上のような構成によつて、鋼管１の外面に塗
布された紫外線硬化塗料は、鋼管１がハウジング
２内を通過する際に、不活性ガス雰囲気中で、套
管３を透過したランプ８からの紫外線が均一に照
射されて、極めて効率よく全面にわたつて均一に
硬化する。即ち、本発明においては、不活性ガス
が充満した雰囲気中では、O2が極めて少ないの
で、このような状態で紫外線硬化塗料に紫外線が
照射されると、極めて効率よく紫外線硬化塗料は
硬化する。その理由は次の通りであると考えられ
る。即ち、O2存在下（例えば空気中）に、紫外
線硬化塗料を置くと、その表層部分とO2とが反
応して化学反応を起こし、従つてこの状態で紫外
線を紫外線硬化塗料に照射すると、その深層部分
に紫外線がとどきにくくなるからである。そのた
め、紫外線硬化塗料の硬化効率が悪くなり、大出
力のランプを使用するか又は長時間照射を行なわ
なければならない。従つて本発明によれば、小出
力のランプ使用、又は短時間照射で十分に紫外線
硬化塗料を硬化させることができる。なお、本発
明においては、套管３があるので、鋼管１の外面
に塗布した紫外線硬化塗料のタレ（落ちること）
によるランプ８の破損が防止できる。 With the above configuration, the ultraviolet curing paint applied to the outer surface of the steel pipe 1 is absorbed from the lamp 8 that has passed through the sleeve 3 in an inert gas atmosphere when the steel pipe 1 passes through the housing 2. The ultraviolet rays are uniformly irradiated, and the entire surface is cured evenly and efficiently. That is, in the present invention, since there is very little O 2 in an atmosphere filled with inert gas, when the UV curable paint is irradiated with UV rays under such conditions, the UV curable paint is cured extremely efficiently. The reason is considered to be as follows. That is, when a UV-curable paint is placed in the presence of O 2 (for example, in the air), the surface layer reacts with O 2 to cause a chemical reaction. Therefore, when UV-curable paint is irradiated with UV rays in this state, This is because it becomes difficult for ultraviolet rays to reach those deep layers. Therefore, the curing efficiency of the ultraviolet curable coating material deteriorates, and it is necessary to use a high-output lamp or to perform irradiation for a long time. Therefore, according to the present invention, an ultraviolet curable coating material can be sufficiently cured by using a low-output lamp or by irradiating it for a short period of time. In addition, in the present invention, since the sleeve 3 is provided, the ultraviolet curing paint applied to the outer surface of the steel pipe 1 may sag (fall).
Damage to the lamp 8 caused by this can be prevented.
ついで実施例について説明する。 Next, examples will be explained.
外径298.4mmφのサイズの鋼管を準備し、ハウ
ジング内においては、套管として、内径350mmφ
の石英管を配し、一方、有効長50cm、80Wの紫外
線照射ランプを、18本管周にそつて等間隔で（従
つて管中心角は20°）、且つ鋼管表面との距離が90
mmになるように配置した。鋼管外面において管周
にそつてほぼ均一に200ｍＷ／cm2の照度が得られ
た。そして、鋼管外面に、アクリル系紫外線硬化
塗料（粘度：50℃で100C.P.）を20μ厚になるよう
に塗布し、ついでこの鋼管がハウジング中を通過
することによつてその外面に塗布した紫外線硬化
塗料が均一に十分硬化するに必要な移動速度を求
めたところ、２ｍ／secであつた。（套管と鋼管と
の間に形成された室内には30／secの割合でN2
ガスを供給した）。 Prepare a steel pipe with an outer diameter of 298.4 mmφ, and inside the housing as a sleeve tube with an inner diameter of 350 mmφ.
On the other hand, 18 UV irradiation lamps with an effective length of 50 cm and a power output of 80 W were placed at equal intervals along the circumference of the main pipe (therefore, the center angle of the pipe was 20°), and the distance from the steel pipe surface was 90°.
It was arranged so that it was mm. An illumination intensity of 200 mW/cm 2 was obtained on the outer surface of the steel pipe almost uniformly along the circumference of the pipe. Then, acrylic ultraviolet curing paint (viscosity: 100C.P. at 50°C) was applied to the outer surface of the steel pipe to a thickness of 20 μm, and then the steel pipe was passed through the housing and coated on the outer surface. The travel speed necessary for uniformly and sufficiently curing the ultraviolet curable paint was determined to be 2 m/sec. (The chamber formed between the jacket pipe and the steel pipe is filled with N 2 at a rate of 30/sec.
(supplied gas).
なお比較の目的で、套管を設けず、N2ガスも
供給しない以外は上記と同一条件で、鋼管外面の
紫外線硬化塗料が均一に十分硬化するに必要な移
動速度を求めたところ、１ｍ／secであつた。 For the purpose of comparison, we calculated the travel speed necessary for the UV-curable paint on the outer surface of the steel pipe to uniformly and sufficiently harden under the same conditions as above, except that the jacket was not installed and N2 gas was not supplied. It was hot in sec.
以上説明したように、この発明においては、極
めて効率よく、管棒状体外面に塗布した紫外線硬
化塗料を硬化させることができる。 As explained above, in the present invention, the ultraviolet curing paint applied to the outer surface of the tube-rod-shaped body can be cured extremely efficiently.
第１図はこの発明を実施するための硬化装置の
一態様を示す概略縦断正面図、第２図は同概略縦
断側面図である。
１……鋼管、３……套管、８……ランプ。
FIG. 1 is a schematic longitudinal sectional front view showing one embodiment of a curing apparatus for carrying out the present invention, and FIG. 2 is a schematic longitudinal sectional side view thereof. 1... steel pipe, 3... mantle, 8... lamp.
Claims (1)
移動させ、前記管棒状体の外側に配置した紫外線
照射ランプによつて、移動中の前記管棒状体の外
面に塗布した紫外線硬化塗料表面に紫外線を照射
し、かくして前記管棒状体の外面に塗布した紫外
線硬化塗料を硬化させる方法において、 前記管棒状体は、紫外線透過可能な套管中を移
動し、 前記管棒状体の外面に塗布した紫外線硬化塗料
表面には、前記套管を通して紫外線が照射され、 前記套管と前記套管中の前記管棒状体との間に
は、不活性ガスが満たされていることを特徴とす
る管棒状体外面に塗布した紫外線硬化塗料の硬化
方法。[Scope of Claims] 1. A tube rod-shaped body coated with an ultraviolet curable paint on its outer surface is moved, and an ultraviolet ray irradiation lamp placed outside the tube rod-shaped body is used to coat the outer surface of the tube rod-shaped body while it is being moved. In the method of curing the UV-curable paint applied to the outer surface of the tube rod-like body by irradiating the surface of the UV-curable paint with ultraviolet rays, the tube-rod body moves in an ultraviolet-transmissible sleeve; The surface of the ultraviolet curable paint applied to the outer surface of the tube is irradiated with ultraviolet rays through the tube, and the space between the tube and the tube rod-shaped body in the tube is filled with an inert gas. Features: A method for curing ultraviolet curing paint applied to the outer surface of a tube rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19767781A JPS58101765A (en) | 1981-12-10 | 1981-12-10 | Hardening method of ultraviolet hardening paint applied on outside surface of pipe rod-like body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19767781A JPS58101765A (en) | 1981-12-10 | 1981-12-10 | Hardening method of ultraviolet hardening paint applied on outside surface of pipe rod-like body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58101765A JPS58101765A (en) | 1983-06-17 |
| JPH0211312B2 true JPH0211312B2 (en) | 1990-03-13 |
Family
ID=16378496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19767781A Granted JPS58101765A (en) | 1981-12-10 | 1981-12-10 | Hardening method of ultraviolet hardening paint applied on outside surface of pipe rod-like body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58101765A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH664707A5 (en) * | 1985-06-05 | 1988-03-31 | Caran D Ache Crayons | PROCESS FOR COATING PENCILS AND INSTALLATION FOR CARRYING OUT SAID METHOD. |
| JP2562452B2 (en) * | 1987-05-26 | 1996-12-11 | 古河電気工業株式会社 | Method for curing UV curable resin applied to wire |
| JP5246353B2 (en) | 2012-01-12 | 2013-07-24 | 新日鐵住金株式会社 | Film formation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994757A (en) * | 1972-11-30 | 1974-09-09 | ||
| JPS5226254A (en) * | 1975-08-22 | 1977-02-26 | Seiko Instr & Electronics Ltd | Electronic digital clock |
| JPS5442496A (en) * | 1977-09-08 | 1979-04-04 | Nippon Telegraph & Telephone | Production of optical wave guide glass fiber |
| JPS558229A (en) * | 1978-06-29 | 1980-01-21 | Sumitomo Electric Industries | Method of connecting cv cable |
-
1981
- 1981-12-10 JP JP19767781A patent/JPS58101765A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4994757A (en) * | 1972-11-30 | 1974-09-09 | ||
| JPS5226254A (en) * | 1975-08-22 | 1977-02-26 | Seiko Instr & Electronics Ltd | Electronic digital clock |
| JPS5442496A (en) * | 1977-09-08 | 1979-04-04 | Nippon Telegraph & Telephone | Production of optical wave guide glass fiber |
| JPS558229A (en) * | 1978-06-29 | 1980-01-21 | Sumitomo Electric Industries | Method of connecting cv cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58101765A (en) | 1983-06-17 |
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