JPH02265677A - Painting method using ultraviolet curable paint - Google Patents
Painting method using ultraviolet curable paintInfo
- Publication number
- JPH02265677A JPH02265677A JP8529189A JP8529189A JPH02265677A JP H02265677 A JPH02265677 A JP H02265677A JP 8529189 A JP8529189 A JP 8529189A JP 8529189 A JP8529189 A JP 8529189A JP H02265677 A JPH02265677 A JP H02265677A
- Authority
- JP
- Japan
- Prior art keywords
- film
- coating film
- coated
- ultraviolet curable
- curable paint
- 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
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000003973 paint Substances 0.000 title claims abstract description 18
- 238000010422 painting Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 64
- 239000011248 coating agent Substances 0.000 claims description 57
- 238000005496 tempering Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000011282 treatment Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 9
- 230000001066 destructive effect Effects 0.000 abstract description 2
- 238000005242 forging Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 2
- 238000000137 annealing Methods 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 description 12
- 230000006698 induction Effects 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009659 non-destructive testing Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
Ａ１発明の目的
（１）産業上の利用分野
本発明は、紫外線硬化型塗料を用いた塗装方法、特に、
熱的手段を併用して塗膜の硬化を促進させることのでき
る塗装方法に関する。Detailed Description of the Invention A1 Objective of the Invention (1) Industrial Application Field The present invention relates to a coating method using an ultraviolet curable paint, in particular,
The present invention relates to a coating method that can accelerate the curing of a coating film by using thermal means in combination.
（２）従来の技術
従来、この種塗装方法としては、塗膜形成後被塗物を加
熱し１次いで被塗物に、それが加熱温度を維持している
状態で紫外線を照射する、といった手法を用いることが
公知である（特開昭５９−１３２９７４号公報参照）。(2) Conventional technology Conventionally, this type of coating method involves heating the object to be coated after forming a coating film, and then irradiating the object with ultraviolet rays while maintaining the heating temperature. It is known to use (see JP-A-59-132974).
（３）発明が解決しようとする課題
しかしながら前記塗装方法の実施に当っては、加熱装置
を必要とするため、塗装設備の大型化および設備コスト
の増加を来たすという問題がある。(3) Problems to be Solved by the Invention However, in carrying out the above-mentioned coating method, since a heating device is required, there is a problem that the coating equipment becomes larger and the equipment cost increases.
また塗膜をその表面側から加熱すると、塗膜表面に薄い
硬化膜が形成されるため、塗膜内部に存する溶剤の揮発
が妨げられ、その結果塗膜の硬化が遅くなるといった問
題も生じる。Furthermore, when a coating film is heated from the surface side, a thin cured film is formed on the coating surface, which prevents the solvent present inside the coating film from volatilizing, resulting in a problem that the curing of the coating film is delayed.
その上、塗装前処理として、プラスティングおよびそれ
に次ぐ洗浄を行うと、加熱乾燥装置も備えなければなら
ないので、塗装設備がさらに大型化することになる。Furthermore, if plastering and subsequent cleaning are performed as pre-painting treatments, a heating drying device must also be provided, which further increases the size of the painting equipment.
本発明は前記に鑑み、熱処理を施された被塗物に紫外線
硬化型塗料を用いて塗装を行うに当り、熱処理による被
塗物の保有熱を有効に利用して塗膜の硬化を促進させる
ことのできる前記塗装方法を提供することを目的とする
。In view of the above, the present invention promotes the curing of the coating film by effectively utilizing the heat retained in the coating material due to the heat treatment when painting the heat-treated coating material using an ultraviolet curable paint. It is an object of the present invention to provide the above-mentioned coating method.
また本発明は、塗装前処理に伴う洗浄液の乾燥を、焼戻
し過程を利用して行い、乾燥のための装置を不要にする
ことのできる前記塗装方法を提供することを目的とする
。Another object of the present invention is to provide the above-mentioned painting method, in which the cleaning liquid accompanying the painting pretreatment is dried using a tempering process, thereby eliminating the need for a drying device.
Ｂ０発明の構成
（１）課題を解決するための手段
本発明は、熱処理後冷却過程にある被塗物が４０〜８０
℃の温度を保有している状態で、前記被塗物に紫外線硬
化型塗料を用いて塗膜を形成し、次いで前記塗膜に紫外
線を照射して該塗膜を硬化させる・ことを第１の特徴と
する。B0 Structure of the Invention (1) Means for Solving the Problems The present invention provides that the object to be coated in the cooling process after heat treatment is 40 to 80
The first step is to form a coating film on the object to be coated using an ultraviolet curable paint while maintaining a temperature of The characteristics of
また本発明は、被塗物に、その焼入れ後であって焼戻し
前に、プラスティングおよびそれに次ぐ洗浄を含む塗装
前処理を施し、焼戻し後冷却過程にある被塗物が４０〜
８０℃の温度を保有している状態で、前記被塗物に紫外
線硬化型塗料を用いて塗膜を形成し、次いで前記塗膜に
紫外線を照射して該塗膜を硬化させることを第２の特徴
とする。Further, the present invention provides a method in which the object to be coated is subjected to pre-painting treatment including plastering and subsequent cleaning after quenching and before tempering, and the object to be coated is in the cooling process after tempering.
A second step includes forming a coating film on the object to be coated using an ultraviolet curable paint while maintaining a temperature of 80°C, and then irradiating the coating film with ultraviolet rays to cure the coating film. The characteristics of
（２）作 用
第１の特徴によれば、熱処理による被塗物の保有熱が塗
膜に、その下面側より伝播され、したがって溶剤の揮発
が塗膜表面から効率良く行われるので塗膜の硬化が促進
される。(2) Effect According to the first characteristic, the heat retained by the object to be coated due to heat treatment is propagated to the coating film from the lower surface side, and therefore the solvent is efficiently volatilized from the coating film surface, so that the coating film is Hardening is accelerated.
第２の特徴によれば、洗浄液の乾燥は焼戻し過程で行わ
れる。また前記塗装前処理によって、被塗物から、スケ
ール等の異物が除去されると共に被塗物表面が粗面化さ
れるので、その表面における塗膜の密着性が向上する。According to a second feature, drying of the cleaning liquid takes place during the tempering process. In addition, the pre-painting treatment removes foreign substances such as scale from the object to be coated and roughens the surface of the object to be coated, thereby improving the adhesion of the coating film on the surface.
なお、被塗物の保有熱が４０℃を下回ると、塗膜の性状
が不安定となり、また８０℃を上回ると、塗膜の性状が
悪化する。Note that if the retained heat of the object to be coated is below 40°C, the properties of the coating film will become unstable, and if it exceeds 80°C, the properties of the coating film will deteriorate.
（３）実施例
第１図において、被塗物としての等速ジヨイント用外輪
１は、カップ部２と、そのカップ部２の底壁３外面に突
設された軸部４とを有する。カップ部２の周壁５外面お
よび底壁３外面に、紫外線硬化型塗料よりなる防錆用塗
膜６が形成されている。(3) Embodiment In FIG. 1, an outer ring 1 for a constant velocity joint as an object to be coated has a cup portion 2 and a shaft portion 4 protruding from the outer surface of a bottom wall 3 of the cup portion 2. On the outer surface of the peripheral wall 5 and the outer surface of the bottom wall 3 of the cup portion 2, a rust-preventing coating film 6 made of an ultraviolet curable paint is formed.
第２図は、熱処理設備に塗装設備を組込んだ本発明塗装
方法の実施設備を示す。FIG. 2 shows a facility for implementing the coating method of the present invention, in which a coating facility is incorporated into a heat treatment facility.
熱処理設備は、洗浄装置７、第１高周波焼入れ装置８Ｉ
、第２高周波焼入れ装置８□、非破壊検査装置９および
焼戻し装置１０を有する。The heat treatment equipment includes a cleaning device 7 and a first induction hardening device 8I.
, a second induction hardening device 8□, a nondestructive testing device 9, and a tempering device 10.
塗装設備は、塗装前処理装置１１、保温装置１２、塗膜
形成装置１３および塗膜硬化装置１４を有する。塗装前
処理装置１１はプラスティング機構および洗浄機構を備
え、第２高周波焼入れ装置８２と非破壊検査装置９との
間に設置される。また保温装置１２は焼戻し装置１０の
出口側に設置される。The coating equipment includes a coating pretreatment device 11, a heat retention device 12, a coating film forming device 13, and a coating film curing device 14. The painting pretreatment device 11 includes a plastering mechanism and a cleaning mechanism, and is installed between the second induction hardening device 82 and the nondestructive testing device 9. Further, the heat retaining device 12 is installed on the exit side of the tempering device 10.
熱処理および塗装処理は次の各工程を経て行われる。Heat treatment and painting treatment are performed through the following steps.
（ａ） 洗浄装置７において、鍛造後の外輪ｌを、湯
を用いて洗浄する。(a) In the cleaning device 7, the forged outer ring l is cleaned using hot water.
（ｂ） 第１高周波焼入れ装置８．において、外輪１
の周壁５内面に焼入れを行う。(b) First induction hardening device 8. , outer ring 1
The inner surface of the peripheral wall 5 is hardened.
（Ｃ） 第２高周波焼入れ装置８．において、外輪１
の軸部４に焼入れを行う。(C) Second induction hardening device 8. , outer ring 1
The shaft portion 4 is hardened.
（ｄ） 塗装前処理装置１１において、外輪１の周壁
５外面および底壁３外面にプラスティングおよびそれに
次ぐ洗浄を施す。このプラスティングによって、周壁５
外面および底壁３外面に付着する、鍛造工程で形成され
たボンデライト被膜および焼入れで生じたスケールが共
に除去され、また周壁５外面等は粗面化される。(d) In the painting pretreatment device 11, the outer surface of the peripheral wall 5 and the outer surface of the bottom wall 3 of the outer ring 1 are plastered and then washed. With this plasting, the peripheral wall 5
Both the bonderite coating formed during the forging process and the scale generated during quenching, which adhere to the outer surface and the outer surface of the bottom wall 3, are removed, and the outer surface of the peripheral wall 5, etc., is roughened.
（ｅ） 非破壊検査装置９において、外輪１における
クランク等の有無を検査する。(e) In the non-destructive inspection device 9, the presence or absence of a crank, etc. in the outer ring 1 is inspected.
（ｆ） 焼戻し装置１０において、外輪ｌに焼戻しを
行う、この焼戻し温度は約１５０℃であり、この焼戻し
過程で塗装前処理で用いられた洗浄液の乾燥が行われる
。(f) In the tempering device 10, the outer ring 1 is tempered at a tempering temperature of about 150° C., and the cleaning liquid used in the pre-painting treatment is dried during this tempering process.
（（至）塗装設備が稼働中であれば、保温装置１２は非
作動状態にあり、したがって外輪１を保温過程を経ずに
塗膜形成装置１３に導入し、そこで外輪１の周壁５外面
および底壁３外面に紫外線硬化型塗料を用いてスプレー
塗装を施し、塗膜６を形成する。この塗膜形成時、外輪
１は焼戻し処理後の冷却過程にあり、その外輪１の温度
は４０〜８０℃に設定される。((To) If the coating equipment is in operation, the heat retention device 12 is in an inactive state, so the outer ring 1 is introduced into the coating film forming device 13 without going through the heat retention process, where the outer surface of the peripheral wall 5 of the outer ring 1 and The outer surface of the bottom wall 3 is spray-painted using an ultraviolet curable paint to form a coating film 6. At the time of forming this coating film, the outer ring 1 is in the cooling process after being tempered, and the temperature of the outer ring 1 is 40~40°C. The temperature is set at 80°C.
このように外輪工が、前記温度を保有している状態で塗
膜形成を行うと、外輪１の周壁５外面および底壁３外面
でそれらの保有熱により塗料の粘度が低下してそれら外
面の無数の凹部に塗料が入り込み、その結果塗膜６の密
着性および表面平滑性が向上する。When the outer ring worker forms a coating film while maintaining the above-mentioned temperature, the viscosity of the paint decreases due to the heat retained on the outer surface of the peripheral wall 5 and the outer surface of the bottom wall 3 of the outer ring 1. The paint enters the countless recesses, and as a result, the adhesion and surface smoothness of the coating film 6 are improved.
Ｑ′１）塗膜硬化装置１４において、塗膜６に紫外線を
照射してその塗装６を硬化させる。Q'1) In the coating film curing device 14, the coating film 6 is irradiated with ultraviolet rays to cure the coating film 6.
この場合、前記塗膜形成過程で、外輪１の保有熱により
塗膜６に含まれる溶剤の揮発が既に進行しており、また
この硬化過程でも外輪ｌの保有熱・により溶剤が揮発す
る。しかも、外輪ｌの保有熱が塗膜６に、その下面側よ
り伝播されるので、溶剤の揮発が塗膜６表面から効率良
く行われる。したがって、短時間の紫外線照射で高硬度
な塗膜６が得られる。In this case, in the process of forming the coating film, the solvent contained in the coating film 6 has already been volatilized due to the heat retained in the outer ring 1, and the solvent is also volatilized due to the heat retained in the outer ring 1 during this curing process. Moreover, since the heat retained in the outer ring 1 is transmitted to the coating film 6 from the lower surface thereof, the solvent is efficiently volatilized from the surface of the coating film 6. Therefore, a highly hard coating film 6 can be obtained by short-time ultraviolet irradiation.
下表は、外輪１１〜ｌ、の保有熱を変えて行われた塗装
試験結果を示す。表中、密着性試験は、塗膜に、カッタ
によって１鵬間隔で縦線および横・線を刻み、その塗膜
に粘着テープを貼着した後それを剥がすことによって行
われた。The table below shows the results of a coating test conducted by changing the retained heat of the outer rings 11 to 1. In the table, the adhesion test was carried out by cutting vertical lines and horizontal lines on the coating film with a cutter at intervals of 1 inch, applying adhesive tape to the coating film, and then peeling it off.
第（１）項記載の発明によれば、特別な加熱装置を用い
ることなく、紫外線硬化型塗料よりなる性状の良い塗膜
を能率良く、且つ経済的に得ることができる。According to the invention described in item (1), it is possible to efficiently and economically obtain a coating film with good properties made of an ultraviolet curable paint without using a special heating device.
第（２）項記載の発明によれば、前記効果に加え、塗装
前処理における洗浄液の乾燥装置を不要にしζ、特に、
密着性を向上させた塗膜を経済的に得ることができる。According to the invention described in item (2), in addition to the above-mentioned effects, it is possible to eliminate the need for a drying device for cleaning liquid in pre-painting treatment, and in particular,
A coating film with improved adhesion can be obtained economically.
第１図は等速ジヨイント用外輪の縦断正面図、第２図は
本発明の実施設備を示す概略図である。
】・・・外輪（被塗物）、６・・・塗膜、８１，８□・
・・第１．第２高周波焼入れ装置、１０・・・焼戻し装
置１１・・・塗装前処理装置、１３・・・塗膜形成装置
、１４・・・塗膜硬化装置
前記表から明らかなように、外輪ｌｔにおいては、その
保有熱を６０℃に設定することによって、紫外線照射時
間が極めて短くても硬度、密着性共に良好であり、また
べたつきもない塗膜６が得られる。その上、鉛筆硬度試
験において、３Ｈでも十分な硬度を有することが判明し
た。
外輪ＩＩにおいては、その保有熱が低いことに起因して
塗膜の性状が不安定であり、また外輪１、においては、
その保有熱が高過ぎるため塗膜が沸騰してその性状が悪
化する。
なお、前記塗装前処理は必要に応じて省略される。また
前記保温装置１２は、塗装設備が停止中等の場合に作動
して外輪１の保有熱を４０〜８０℃に維持する。さらに
必要に応じて、焼戻し装置１０の出口側に冷却装置を配
設し、外輪１の保有熱を４０〜８０℃に降下させるよう
にしてもよい。
Ｃ０発明の効果
第１図FIG. 1 is a longitudinal sectional front view of an outer ring for a constant velocity joint, and FIG. 2 is a schematic diagram showing equipment for implementing the present invention. ]... Outer ring (subject to be coated), 6... Paint film, 81, 8□.
...First. 2nd induction hardening device, 10... Tempering device 11... Paint pretreatment device, 13... Paint film forming device, 14... Paint film curing device As is clear from the above table, in the outer ring lt, By setting the retained heat to 60° C., a coating film 6 with good hardness and adhesion and no stickiness can be obtained even if the ultraviolet irradiation time is extremely short. Moreover, in a pencil hardness test, it was found that even 3H had sufficient hardness. In outer ring II, the properties of the coating film are unstable due to its low heat retention, and in outer ring 1,
Because the retained heat is too high, the coating film boils and its properties deteriorate. Note that the pre-painting treatment may be omitted if necessary. Further, the heat retaining device 12 operates when the coating equipment is stopped, etc., and maintains the heat retained in the outer ring 1 at 40 to 80°C. Furthermore, if necessary, a cooling device may be provided on the exit side of the tempering device 10 to reduce the heat retained in the outer ring 1 to 40 to 80°C. Effect of C0 invention Figure 1
Claims (2)
温度を保有している状態で、前記被塗物に紫外線硬化型
塗料を用いて塗膜を形成し、次いで前記塗膜に紫外線を
照射して該塗膜を硬化させることを特徴とする、紫外線
硬化型塗料を用いた塗装方法。(1) While the object to be coated is in the cooling process after heat treatment and has a temperature of 40 to 80°C, a coating film is formed on the object using an ultraviolet curable paint, and then the coating film is A coating method using an ultraviolet curable paint, characterized by curing the coating film by irradiating it with ultraviolet rays.
ラスティングおよびそれに次ぐ洗浄を含む塗装前処理を
施し、焼戻し後冷却過程にある被塗物が４０〜８０℃の
温度を保有している状態で、前記被塗物に紫外線硬化型
塗料を用いて塗膜を形成し、次いで前記塗膜に紫外線を
照射して該塗膜を硬化させることを特徴とする紫外線硬
化型塗料を用いた塗装方法。(2) After quenching and before tempering, the object to be coated is subjected to pre-painting treatment including plastering and subsequent cleaning, and the object to be coated maintains a temperature of 40 to 80°C during the cooling process after tempering. a coating film is formed on the object to be coated using an ultraviolet curable coating material, and then the coating film is irradiated with ultraviolet rays to cure the coating film. Painting method used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8529189A JPH02265677A (en) | 1989-04-04 | 1989-04-04 | Painting method using ultraviolet curable paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8529189A JPH02265677A (en) | 1989-04-04 | 1989-04-04 | Painting method using ultraviolet curable paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02265677A true JPH02265677A (en) | 1990-10-30 |
Family
ID=13854477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8529189A Pending JPH02265677A (en) | 1989-04-04 | 1989-04-04 | Painting method using ultraviolet curable paint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02265677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049380A (en) * | 2010-12-31 | 2011-05-11 | 苏州普锐晶科技有限公司 | Application of photosensitive glue |
-
1989
- 1989-04-04 JP JP8529189A patent/JPH02265677A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049380A (en) * | 2010-12-31 | 2011-05-11 | 苏州普锐晶科技有限公司 | Application of photosensitive glue |
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