JP2000117154A - Power coating method - Google Patents
Power coating methodInfo
- Publication number
- JP2000117154A JP2000117154A JP10328763A JP32876398A JP2000117154A JP 2000117154 A JP2000117154 A JP 2000117154A JP 10328763 A JP10328763 A JP 10328763A JP 32876398 A JP32876398 A JP 32876398A JP 2000117154 A JP2000117154 A JP 2000117154A
- Authority
- JP
- Japan
- Prior art keywords
- air
- coating
- rib
- gun
- coating method
- 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
Links
Landscapes
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は特にトランス用の放
熱波リブのような特殊な部分に対しての静電粉体塗装方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic powder coating method for a special part such as a heat radiation wave rib for a transformer.
【０００２】[0002]
【従来の技術】一般に静電粉体塗装は接地した被塗装物
とガンの電極との間に直流高電圧（３０〜９０ＫＶ）を
印加し、一方粉体塗料を空気力によってガンから噴射す
ると空気中に分散した粉体粒子はガンの電極でおこるコ
ロナ放電によって発生するイオン化空気と衝突して荷電
し、ガンと被塗装物間の静電場の作用と空気流によっで
被塗装物に向い塗装が行われる。2. Description of the Related Art In general, in electrostatic powder coating, a DC high voltage (30 to 90 KV) is applied between an object to be grounded and an electrode of a gun. The powder particles dispersed therein collide with the ionized air generated by the corona discharge generated at the gun electrode, and are charged, and are applied to the work by the action of the electrostatic field between the gun and the work and the air flow. Is performed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、この従来から
行われている塗装方法では平面的な面への塗装、即ち鋼
管の継手や金網等の塗装に適していて、本発明の目的と
するトランスの放熱用の波リブのような深度があり狭い
空間の塗装は不可能であった。However, this conventional coating method is suitable for coating a flat surface, that is, for coating a steel pipe joint, a wire mesh, and the like. It was impossible to paint a narrow space with a depth like a wave rib for heat dissipation.
【０００４】[0004]
【課題を解決するための手段】これは深部に向って噴射
される粉体粒子相互間に起る静電気の反発作用によるも
のと考えられる。It is considered that this is due to the repulsion of static electricity generated between the powder particles sprayed toward the deep part.
【０００５】本発明は一定の塗装条件を作り、電圧を上
げガンのノズルを変え吹出しエアーを強力にすることに
よって粒子を深部にまで到達させることに成功したもの
である。The present invention has succeeded in making the particles reach a deep part by creating constant coating conditions, increasing the voltage, changing the nozzle of the gun, and increasing the blowing air.
【０００６】[0006]
【発明の実施の形態】添付図面により本発明の実施の形
態を説明すると、図１は被塗装物Ａに対しての粉体Ｂの
塗装状態を示す実施例図であり、図２はリブの形状を示
す。図３はリブＡとノズルの関係を示す実施例図であ
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. FIG. Show the shape. FIG. 3 is an embodiment diagram showing the relationship between the rib A and the nozzle.
【０００７】[0007]
【実施例】図において被塗装物Ａのリブ間の隙間は入口
が３０ｍｍ、深部が２５ｍｍで深さが１１０ｍｍであっ
て、この溝に向けて図３に示すようにガンのノズルを近
づけて粉体粒子Ｂを噴射した場合に、本発明の塗装方法
においてはリンスエアーを０．５ｍ３／分以下とし、電
圧を１００ＫＶに加印しガンからの吹出しエアーを０．
８ｋｇ／ｍ２〜１．５ｋｇ／ｍ２、補助エアー、搬送エ
アー及び流量を２．０〜３．０ｍｍ／ｈと設定すること
によって、最深部において７５μの塗膜が形成され、中
間部においても１３０〜１５０μの塗膜を形成すること
ができる。この場合の入口附近では１８５μの塗膜が形
成されている。In the drawing, the gap between the ribs of the object to be coated A is 30 mm at the entrance, 25 mm at the deep part, and 110 mm in depth. When the body particles B are jetted, in the coating method of the present invention, the rinsing air is set to 0.5 m 3 / min or less, the voltage is applied to 100 KV, and the air blown out from the gun is set to 0.
8kg / m 2 ~1.5kg / m 2 , auxiliary air, by the conveying air and the flow rate is set to 2.0 to 3.0 mm / h, coating 75μ in deepest portion is formed, even at the intermediate portion A coating film having a thickness of 130 to 150 µ can be formed. In this case, a 185 μm coating film is formed near the entrance.
【０００８】この塗装方法は少ないエアー量であっても
多くの粉体塗料を吐出することができ、またガンのノズ
ルを溝の形に応じた可変ノズルを使用することによって
粒子を最奥まで噴射させることができる。[0008] This coating method can discharge a large amount of powder coating even with a small amount of air. In addition, the nozzle of the gun uses a variable nozzle according to the shape of the groove to eject particles to the innermost part. Can be done.
【０００９】[0009]
【発明の効果】本発明は上記のように粉体塗装において
塗り込むための特殊条件及び塗装方法によって従来不可
能とされていたトランスの放熱リブのような部分におい
ても塗装が可能となったものである。According to the present invention, as described above, it is possible to perform coating even on a portion such as a heat-dissipating rib of a transformer, which has been made impossible by the special conditions and the coating method used in powder coating. It is.
【図１】 被塗装物Ａに対しての実施例図FIG. 1 is a diagram showing an example of an object A to be coated;
【図２】 リブの形状を示す斜視図FIG. 2 is a perspective view showing the shape of a rib.
【図３】 リブＡとノズルの関係を示す実施例図FIG. 3 is an embodiment diagram showing a relationship between a rib A and a nozzle.
Claims (1)
を０．５ｍ３／分以下とし、電圧を１００ＫＶに加印し
てガンからの吹出しエアーを０．８ｋｇ／ｍ２〜１．５
ｋｇ／ｍ２、補助エアー、搬送エアー及び流量を２．０
〜３．０ｍ２／ｈと設定して塗装距離をリブＡまでの最
接近部において１０〜５０ｍｍ、リブＡの最奥部までを
１１０〜１５０ｍｍとし、ガン先の噴射スピードを１５
０〜３００ｍｍ／分とすることを特徴とした粉体塗装方
法。1. An epoxy powder coating is used, the rinsing air is set to 0.5 m 3 / min or less, the voltage is applied to 100 KV, and the air blown out from the gun is set to 0.8 kg / m 2 to 1.5 g / m 2 .
kg / m 2 , auxiliary air, transfer air and flow rate 2.0
The coating distance is set to 10 to 50 mm at the closest portion to the rib A, the coating distance to the deepest portion of the rib A is set to 110 to 150 mm, and the spray speed of the gun tip is set to 15 to 3.0 m 2 / h.
A powder coating method characterized by being made 0 to 300 mm / min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328763A JP2000117154A (en) | 1998-10-13 | 1998-10-13 | Power coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10328763A JP2000117154A (en) | 1998-10-13 | 1998-10-13 | Power coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000117154A true JP2000117154A (en) | 2000-04-25 |
Family
ID=18213880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10328763A Pending JP2000117154A (en) | 1998-10-13 | 1998-10-13 | Power coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000117154A (en) |
-
1998
- 1998-10-13 JP JP10328763A patent/JP2000117154A/en active Pending
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