JPS6238276A - Method for repairing welded part of metal drum body - Google Patents
Method for repairing welded part of metal drum bodyInfo
- Publication number
- JPS6238276A JPS6238276A JP17827785A JP17827785A JPS6238276A JP S6238276 A JPS6238276 A JP S6238276A JP 17827785 A JP17827785 A JP 17827785A JP 17827785 A JP17827785 A JP 17827785A JP S6238276 A JPS6238276 A JP S6238276A
- Authority
- JP
- Japan
- Prior art keywords
- welded part
- drum body
- paint
- welded
- nozzle
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 11
- 239000003973 paint Substances 0.000 claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 abstract description 22
- 238000000576 coating method Methods 0.000 abstract description 22
- 238000003466 welding Methods 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000010422 painting Methods 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- 239000012778 molding material Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000005029 tin-free steel Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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）
本発明は金属缶胴の溶接部の補修方法に関し、さらに詳
しくは金属缶胴の溶接部のエアレススプレーによる塗装
による補修方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for repairing a welded portion of a metal can body, and more particularly to a method for repairing a welded portion of a metal can body by painting with an airless spray.
（従来の技術）
特開昭５８−４５７７３号公報には、第５図に示すよう
にエアレススプレーノズル１により面状の、非霧化領域
よりなる塗料膜２を有するスプレー・ぐターンを形成し
、この塗料膜を金属缶胴８の溶接部３に、その進行方向
に直角に当てて塗装し、溶接部を補修する方法が開示さ
れている。(Prior art) Japanese Patent Application Laid-Open No. 58-45773 discloses a method in which a spray pattern having a paint film 2 consisting of a planar non-atomized area is formed by an airless spray nozzle 1 as shown in FIG. , a method is disclosed in which this paint film is applied to the welded part 3 of the metal can body 8 at right angles to the direction of movement of the welded part 3 to repair the welded part.
（発明が解決しようとする問題点）
炭酸飲料やジュース類、その他の食品等の収納される金
属缶用の金属缶胴を溶接によって製造する場合、通常マ
ツシュシーム溶接法が採用され、形成される溶接部３は
、第５図に示すように段差部４を有している。補修は予
め形成されている塗膜５の端部５ａ、５ａ、ならびに溶
接部３およびその近傍の金属露出面６に塗布膜７を形成
して行なわれるのであるが、従来の面状の塗料膜２によ
り塗布を行なった場合、段差部４の上部コーナ部４ａ近
傍の塗布膜７が、塗料の段差部４に沿う流下などのため
、図示のように薄くなり易く、そのため上部コーナ部４
ａ近傍の耐食性が低下するという問題を生ずる。(Problem to be Solved by the Invention) When manufacturing metal can bodies for metal cans for storing carbonated drinks, juices, other foods, etc. by welding, a matshu seam welding method is usually adopted, and the welds formed The portion 3 has a stepped portion 4 as shown in FIG. The repair is carried out by forming a coating film 7 on the ends 5a, 5a of the coating film 5 that has been formed in advance, as well as on the exposed metal surface 6 of the welded part 3 and its vicinity. 2, the coating film 7 near the upper corner 4a of the stepped portion 4 tends to become thinner as shown in the figure due to the paint flowing down along the stepped portion 4.
A problem arises in that the corrosion resistance in the vicinity of a decreases.
全体としての塗布量を多くすれば、上部コーナ部４ａ近
傍の塗布膜厚さも大きくなる。しかし面状の塗料膜２は
一般に第６図に示すように、スプし−のテール発生によ
りその両側端部２ａにおいて特に厚くなる傾向がある。If the total amount of coating is increased, the thickness of the coating near the upper corner portion 4a will also be increased. However, as shown in FIG. 6, the planar paint film 2 generally tends to be particularly thick at both end portions 2a due to tail formation of the spray.
また特に面状の塗料膜２を得るには、吐出圧力を下げな
ければならず、尚更その傾向が著しい。上記の場合、徒
らに塗膜端部５ａ上の塗布膜７の厚さを不必要に大きく
して、塗料の使用量を増大して、生産コストの上昇を招
くおそれがある。また塗布膜厚が増大すれば、これに伴
ない乾燥焼付に要する時間も増大する。In addition, especially in order to obtain a planar paint film 2, the discharge pressure must be lowered, and this tendency is even more pronounced. In the above case, there is a risk that the thickness of the coating film 7 on the coating film end portion 5a will be increased unnecessarily, increasing the amount of paint used, and causing an increase in production costs. Furthermore, as the coating film thickness increases, the time required for drying and baking also increases.
このため乾燥焼付の設備コスト、ランニングコストの増
大を招くことにもなる。This also results in increases in equipment costs and running costs for drying and baking.
（発明の目的）
本発明は、塗料の使用量を特に増大することなく、溶接
部の段差部の上部コーナ部近傍の塗布膜厚さがほぼ所定
範囲値になるように補修が可能な、エアレススプレーに
よる金属缶胴の溶接部の補修方法全提供することを目的
とする。(Object of the Invention) The present invention provides an airless repair method that enables repair so that the coating film thickness near the upper corner of the stepped portion of the welded portion is approximately within a predetermined range without increasing the amount of paint used. The purpose is to provide a complete method for repairing welds on metal can bodies by spraying.
（発明の構成）
本発明は、エアレススプレーノズルにより、第１の面状
塗料膜と第２の面状塗料膜がキ≠参キ≠成し、第１の塗
料膜が溶接部の進行方向にほぼ直角になるようにして、
第２の塗料膜を該溶接部の段差部の上部コー・す近傍に
当てて、該溶接部を補修することを特徴とする金属缶胴
の溶接部の補修方法を提供するものである。(Structure of the Invention) According to the present invention, a first planar paint film and a second planar paint film are formed by an airless spray nozzle, and the first paint film is directed in the advancing direction of the welded part. Make it almost a right angle,
The present invention provides a method for repairing a welded portion of a metal can body, characterized in that the welded portion is repaired by applying a second paint film near the upper corner of the stepped portion of the welded portion.
（問題点を解決するための手段とその作用）本発明にお
いては、第１の面状塗料膜と第２ののスグレー／やター
ンを形成し、第１の塗料膜が溶接部の進行方向にほぼ直
角になるようにして、第２の塗料膜を該溶接部の段差部
の上部コーナ近傍に当てて、該溶接部を補修する。(Means for Solving the Problems and Their Effects) In the present invention, a first planar paint film and a second planar paint film are formed so that the first paint film extends in the advancing direction of the welded part. The weld is repaired by applying a second paint film near the upper corner of the stepped portion of the weld at a substantially right angle.
従って第１の塗料膜によって溶接部近傍の金属露出部が
幅方向全体にわたって塗布される。同時に、段差部の上
部コーナ部近傍が第２の塗料膜によって、特に多量の塗
料によって塗布され、そのため全体の塗布量を特に多く
しなくても、上部コーナ部近傍の塗布膜が特に薄くなる
ことなく、全体として比較的均一な厚さの塗布膜が、補
修されるべき溶接部近傍に形成される。Therefore, the first paint film is applied to the entire exposed metal portion near the weld in the width direction. At the same time, the area near the top corner of the stepped portion is coated with a second paint film, especially a large amount of paint, so that the coating film near the top corner becomes particularly thin, even if the overall coating amount is not particularly large. Instead, a coating film having a relatively uniform thickness as a whole is formed in the vicinity of the weld to be repaired.
（実施例） 以下実施例について説明する。(Example) Examples will be described below.
ｉ１図、第２図において１１はエアレスｆｖ−ノズルで
あって、ノズル開口部１２は、第２図に特に明瞭に示さ
れるように、４個の山形状部１２Ｂが互に直角をなして
突出した、十字形状に形成されている。このスグレーノ
ズル１１かう形成される非霧化領域のスプレー／４’タ
ーン１３は、第１の面状塗料膜１４と第２の面状塗料膜
１５が直角に交叉して、第３図および第７図に示すよう
に、断面十字形状になっている。In FIG. i1 and FIG. 2, 11 is an airless FV-nozzle, and the nozzle opening 12 has four chevron-shaped portions 12B projecting at right angles to each other, as shown particularly clearly in FIG. It is shaped like a cross. The spray/4' turn 13 of the non-atomized area thus formed by the sougret nozzle 11 is formed by the first planar paint film 14 and the second planar paint film 15 intersecting each other at right angles, as shown in FIG. As shown in FIG. 7, it has a cross-shaped cross section.
塗料膜１４．１５を形成するだめの塗料１６（第１図）
としては、溶剤型塗料（溶剤として水をも含める）およ
びオルガノゾル等が好ましく用いられる。溶剤型塗料と
しては、フェノール・エポキシ系、フェノール・アミノ
系、アクリル系、エポキシエステル系、アクリル・アミ
ノ系、アルキ、ド系、アミノ・アルキッド系、ポリウレ
タン系、不飽和ポリエステル系、ビニル系、変性ビニル
系、ポリブタジェン系の塗料、およびこれらの混合系塗
料等が例示される。溶剤の含有量は１０〜９０重量％が
好ましい。必要に応じ顔料等を含んでもよい。塗料粘度
は一般的に４０秒以下（２５℃、す４フオードカツプ測
定）が好ましい。Paint 16 forming a paint film 14.15 (Fig. 1)
As such, solvent-based paints (including water as a solvent), organosols, and the like are preferably used. Solvent-based paints include phenol/epoxy, phenol/amino, acrylic, epoxy ester, acrylic/amino, alky, do, amino/alkyd, polyurethane, unsaturated polyester, vinyl, and modified. Examples include vinyl-based paints, polybutadiene-based paints, and mixed paints thereof. The content of the solvent is preferably 10 to 90% by weight. Pigments and the like may be included if necessary. The viscosity of the coating material is generally preferably 40 seconds or less (measured at 25° C. with a four-force cup).
第４図は、スグレーパターン１３の塗料膜１４゜１５を
、第３図の１点鎖線で示す８の位置にある、金属缶胴８
の溶接部３近傍に当てて補修を行なっている状態を示し
たものである。FIG. 4 shows the paint film 14°15 of the gray pattern 13 on the metal can body 8 at position 8 indicated by the dashed line in FIG.
This figure shows a state in which repair is being carried out near the welded part 3.
金属缶胴８は、錫めっき鋼板、ティンフリースチール等
の金属ブランク等より形成された缶胴成形体の重ね合せ
部をマツシュシーム電気抵抗溶接することによって形成
される。５は内面（ｌｌｌに予め形成されている耐食性
塗膜（例えばエポキシ・フェノール系焼付塗膜）であり
、その端部５ ａ 、５ａ間の溶接部３近傍の内面は金
属露出面６となっている。The metal can body 8 is formed by welding the overlapped portions of can body molded bodies made of metal blanks such as tin-plated steel plates and tin-free steel by electric resistance welding. Reference numeral 5 denotes a corrosion-resistant coating film (e.g., epoxy/phenol baked coating film) that is preformed on the inner surface (llll), and the inner surface near the welding part 3 between the ends 5 a and 5 a becomes a metal exposed surface 6 . There is.
塗布は、第１の塗料膜１４が溶接部３の進行方向にほぼ
直角になるように、かつ金属露出面６および塗膜５の端
部５ａ、５ａを覆うように、かつ第２の塗料膜１５が溶
接部３の段差部４の上部コ−す（凸状コーナ）４ａ近傍
に当るようにして行なわれる。そのため形成される塗布
膜７は、上部コーナ４ａ近傍において比較的厚くなり、
この部分より塗料が一部幅方向外方に流れるため、全体
として比較的均一な厚さの塗布膜７が形成される。The application is carried out so that the first paint film 14 is approximately perpendicular to the direction of movement of the welded part 3 and covers the exposed metal surface 6 and the ends 5a, 5a of the paint film 5, and the second paint film is 15 is applied to the vicinity of the upper course (convex corner) 4a of the stepped portion 4 of the welding portion 3. Therefore, the coating film 7 formed becomes relatively thick near the upper corner 4a,
Since the paint partially flows outward in the width direction from this portion, a coating film 7 having a relatively uniform thickness is formed as a whole.
そしてスプレー量、金属缶胴８の移行速度、塗料の粘度
等を適宜定めることにより、上部コーナ部４ａの塗布膜
の乾燥後の厚さをほぼ所定範囲値（５〜２０μｍ、好ま
しくは１５μｍ）におさめるてもよい。By appropriately determining the amount of spray, the transfer speed of the metal can body 8, the viscosity of the paint, etc., the thickness of the coating film on the upper corner portion 4a after drying is approximately within a predetermined range (5 to 20 μm, preferably 15 μm). You can store it.
（発明の効果）
本発明によれば、塗料の使用量を特に増大することなく
、溶接部の段差部の上部コーナ部近傍の塗布膜厚さがほ
ぼ所定範囲値になるように、溶接部近傍の金属露出面を
塗料により補修することが可能でちるという効果を奏す
る。(Effects of the Invention) According to the present invention, the thickness of the coating film near the upper corner of the stepped portion of the welded portion is approximately within a predetermined range without increasing the amount of paint used. It is possible to repair the exposed metal surface with paint, which has the effect of reducing dust.
第１図は本発明に適用されるエアレススプレーノズルの
例を示す縦断面図、第２図は第１図のノズルの要部拡大
平面図であって、ノズル開口部を示す図面、第３図は第
１図のノズルにより形成されるスプレー・ぐターンを示
す正面図、第４図は本発明を実施するため第３図のスプ
レーパターンを溶接部近傍に当てている状態の例を示す
１部切断正面図、第５図は従来のスプレー・ぞターンを
溶接部近傍に当てている状態金示す１部切断正面図、第
６図は第５図のＶ＋−Ｖｔ線に沿う横断面図であって、
従来のスプレーパターンの横断面形状を示す図面、第７
図は第４図の■−■線に沿う横断面図であって、本発明
のスプレー・ぐターンの横断面形状を示す図面である。
３・・・溶接部、４・・・段差部、４ａ・・・上部コー
ナ、８・・・金属缶胴、１１・・・エアレススプレーノ
ズル、１３・・・スプレーパターン、１４・・・第１の
面状塗料膜、１５・・・第２の面状塗料膜。
第１図
第２図
第４図
第５図
第６図 第７図FIG. 1 is a vertical cross-sectional view showing an example of an airless spray nozzle applied to the present invention, FIG. 2 is an enlarged plan view of the main part of the nozzle in FIG. 1, showing the nozzle opening, and FIG. 1 is a front view showing the spray pattern formed by the nozzle shown in FIG. 1, and FIG. 4 is a part 1 showing an example of the state in which the spray pattern shown in FIG. FIG. 5 is a partially cutaway front view showing a state in which a conventional spray/zoom is applied near the welding part, and FIG. 6 is a cross-sectional view taken along the V+-Vt line in FIG. 5. hand,
Drawing showing the cross-sectional shape of a conventional spray pattern, No. 7
This figure is a cross-sectional view taken along the line ■--■ in FIG. 4, and is a drawing showing the cross-sectional shape of the spray gun of the present invention. 3... Welding part, 4... Step part, 4a... Upper corner, 8... Metal can body, 11... Airless spray nozzle, 13... Spray pattern, 14... First 15... second planar paint film. Figure 1 Figure 2 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
膜と第２の面状塗料膜が交叉した、断面がほぼ十字形状
のスプレーパターンを形成し、第１の塗料膜が溶接部の
進行方向にほぼ直角になるようにして、第２の塗料膜を
該溶接部の段差部の上部コーナ近傍に当てて、該溶接部
を補修することを特徴とする金属缶胴の溶接部の補修方
法。(1) The airless spray nozzle forms a spray pattern with an approximately cross-shaped cross section in which the first and second planar paint films intersect, and the first paint film is directed in the traveling direction of the welded part. A method for repairing a welded part of a metal can body, the method comprising repairing the welded part by applying a second paint film near the upper corner of the stepped part of the welded part so as to be substantially perpendicular to the welded part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17827785A JPS6238276A (en) | 1985-08-13 | 1985-08-13 | Method for repairing welded part of metal drum body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17827785A JPS6238276A (en) | 1985-08-13 | 1985-08-13 | Method for repairing welded part of metal drum body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6238276A true JPS6238276A (en) | 1987-02-19 |
| JPH0342948B2 JPH0342948B2 (en) | 1991-06-28 |
Family
ID=16045656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17827785A Granted JPS6238276A (en) | 1985-08-13 | 1985-08-13 | Method for repairing welded part of metal drum body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6238276A (en) |
-
1985
- 1985-08-13 JP JP17827785A patent/JPS6238276A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0342948B2 (en) | 1991-06-28 |
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