EP0633069B1 - Painting method for a ship hull block or the like - Google Patents
Painting method for a ship hull block or the like Download PDFInfo
- Publication number
- EP0633069B1 EP0633069B1 EP93110942A EP93110942A EP0633069B1 EP 0633069 B1 EP0633069 B1 EP 0633069B1 EP 93110942 A EP93110942 A EP 93110942A EP 93110942 A EP93110942 A EP 93110942A EP 0633069 B1 EP0633069 B1 EP 0633069B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- painting
- assembly block
- powder
- baking
- steel member
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/042—Directing or stopping the fluid to be coated with air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
Definitions
- (1) steel plates used for a ship are subjected to (2) primary surface treatment by shotblasting and then to (3) shop primer painting.
- the steel plates are (4) cut and bent, and (5) a block assembly step is performed comprising intermediate and major assemblies.
- secondary surface treatment, block painting, and unit painting are performed.
- an outfit work step secondary surface treatment, inside painting, and bottom shell painting are performed. Then, the ship is (7) launched.
- an electrostatic powder-coating method for selectively coating a pattern on the surface of steel plate and an apparatus for carrying out the method comprises the steps of the pre-characterizing clause of claim 1. It comprises depositing coating powders uniformly on the surface of a steel plate and arranging that the coating powders adhere electrostatically to the article surface, and selectively removing the deposited powders from the surface of areas not requiring any powder coating using a force stronger than the adhesive force between the coated powders and the steel plate surface. Subsequently, the surface of the steel plate is heated to form the coating film on the surface areas containing deposited powders. The coating powders may be scattered uniformly on the surface and then charged or vice versa.
- Those portions of the powder on areas which do not require a coating treatment may be removed by using an air-stream or using suction, so that a pattern-like coating of the surface can be obtained. Thereby, those portions from which the powder has been removed have the charges left unerased.
- an object of the present invention is to provide an economical painting method for a ship hull block or the like, which provides labor and manpower saving, shortened work period, and reduced cost due to an improvement of work environment, safety of work, and lightening of labor.
- the first mode of the present invention wherein the painting method comprises a baking step in which electrostatic painting powder is scattered uniformly on both surfaces of a steel plate, which is subjected to shop primer painting or chemical conversion coating treatment after being shotblasted or pickled, the unnecessary portions of scattered electrostatic painting powder on the steel plate is removed by means of a suction nozzle moving under numerical control, and thereafter the scattered electrostatic painting powder on both surfaces of the steel plate is baked by the high-frequency baking method; an intermediate assembly block step in which the baked steel plate is cut into a predetermined shape under numerical control, and a related steel plate is welded to the unpainted portion to form an intermediate assembly block, is characterised by a major assembly block step in which a plurality of intermediate assembly blocks are welded to each other to form a major assembly block; and an integrated assembly block step in which the major assembly block is subjected to secondary surface treatment by pickling, and thereafter secondary painting is performed on the major assembly block before forming an integrated assembly block.
- the painting method comprises the steps of independent claim 2
- the painting method for a ship hull block or the like comprises the steps of independent claim 3.
- a preferred mode of the present invention is characterized in that, in the painting method for a ship hull block or the like according to claim 2, the remaining electrostatic painting powder on said steel member having a required sectional area is baked by the infrared ray baking method in addition to the high-frequency baking method.
- Process A in Fig.1 after a regular-size steel plate, which has been shotblasted or pickled, is subjected to shop primer painting or chemical conversion coating treatment, electrostatic painting powder is scattered uniformly. Then, the electrostatic painting powder at portions of cutting, welding, and burning for bending, which is performed in the subsequent process, is selectively removed by means of a suction nozzle moved under numerical control. The electrostatic painting powder remaining on the regular-size steel plate is baked into a predetermined shape on the regular-size steel plate, which is cut into a predetermined shape and marked with part number, etc. under numerical control. After major assembly is completed via intermediate assembly, second surface treatment by pickling is performed. In this process, the unpainted portions are cleaned by pickling, and high-performance painting is performed as the secondary painting before integrated assembly is performed.
- a steel plate which is subjected to shop primer painting or chemical conversion coating treatment as described in claim 1 is cut and marked under numerical control.
- the surface treatment by pickling and the scattering of electrostatic painting powder are performed, and thereafter the electrostatic painting powder at the unnecessary portions is selectively removed under numerical control or by masking before applying the powder.
- the welded member After being baked by the high-frequency baking method, the welded member enters Process A at the intermediate assembly for subsequent processes. Therefore, this mode is also suitable for the assembly and painting of sections and straight pipes.
- a steel plate which is subjected to shop primer painting or chemical conversion coating treatment as described in claim 1 is cut and marked under numerical control.
- the surface treatment by pickling is performed and then the scattering of electrostatic painting powder is performed; thereafter, the electrostatic painting powder at the unnecessary portions is selectively removed under numerical control or by masking before applying the powder.
- the welded member is baked by the far infrared ray or near infrared ray baking method. Therefore, this mode is suitable for the assembly and painting of subassembled members, outfittings, and deformed pipes.
- Fig.1 is a flowchart showing the entire process of the embodiment
- Fig.2 is a block diagram showing Process A in Fig.1.
- the present invention consists of a steel plate precoating process with numerical control unpainted portions shown on the left half of the figure, a block painting process on the upper right half, and an on-berth painting process on the lower right half.
- Process A indicates the method described in claim 1
- Process B indicates the method described in claim 2
- Process C indicates the method described in claim 3.
- the on-berth painting process is publicly known.
- Process A is the basic process.
- a regular-size steel plate 1, which has been shotblasted or pickled, is subjected to shop primer painting or chemical conversion coating treatment 1a.
- electrostatic painting powder 2 is uniformly scattered on the entire surface of plate.
- the electrostatic painting powder applied to the portions which are cut, welded, or burnt for bending in the following process is selectively removed by means of a numerically controlled suction nozzle 3, that is, unpainted portions 4 are formed.
- the electrostatic painting powder 5 remaining on the regular-size steel plate is baked in a predetermined shape 7 on the steel plate by high-frequency baking 6.
- the steel plate is cut by an numerically controlled cutter 8 into a predetermined shape 7, and part number, etc. are marked under numerical control. After that, intermediate assembly 9 and major assembly 10 are performed.
- secondary surface preparation 11 by pickling is further performed, where the unpainted portions 4 are cleaned by pickling.
- high-performance painting is carried out as secondary painting 12 before integrated assembly 13 is performed.
- the block is erected on the berth 14 in the conventional manner. Afterwards, block joint painting and finish painting are performed by conventional methods. Thus, the ship is completed and delivered.
- This basic process A offers the following effects by the process in which electrostatic painting powder 2 is scattered and unnecessary powder is removed under numerical control, that is, by forming unpainted portions 4 on both surfaces.
- the high-frequency baking 6 of the electrostatic painting powder 2 offers the following effects:
- the paint coating is less prone to be damaged mechanically and thermally during numerically controlled cutting, assembly, and welding.
- the high-frequency baking achieves energy saving due to short-time heating.
- uniform heating sometimes cannot be effected in the thickness direction due to the temperature distribution shown in Fig.3(A) when a thick paint film is heated in a very short time because the back surface side of the coating is heated.
- the coating is heated from the top surface side, so that the temperature distribution is as shown in Fig.3(B). Therefore, by combining the high-frequency baking and the far infrared ray heating, the temperature distribution shown in Fig.3(C) is attained, thereby effecting heating which is uniform in the film thickness direction.
- Process B The blocks of intermediate assembly with a somewhat complicated shape and construction are painted by Process B in Fig.1.
- the steel plate which is subjected to shop primer painting or chemical conversion coating treatment 1a at the initial stage of Process A, undergoes numerically controlled cutting 8 and part number is marked on each part.
- surface treatment 16 by pickling is performed and electrostatic painting powder 2 is scattered.
- selective removal 3 of electrostatic painting powder at the unnecessary portions is performed under numerical control or by masking before applying the powder.
- Baking is completed by high-frequency baking 6, and the subassembled member enters the aforesaid Process A at the intermediate assembly 9 for subsequent processes.
- Process B is suitable for the assembly and painting of sections, straight pipes and so forth.
- pre-painting heat baking 17 or fluidized-bed coating powder painting 18 may be performed in place of high-frequency baking 6.
- the object to be painted is heated before painting, and the painting film can be formed by spraying paint by the electrostatic method or by the fluidized-bed coating (immersion in paint floated by air) method.
- the unpainted portions are masked or removed after film formation. If full curing is not achieved, heating is further performed subsequently.
- Subassembled members and the like are processed as shown in Process C in Fig.1.
- the steel plate which is subjected to shop primer painting or chemical conversion coating treatment 1a at the initial stage of Process A, undergoes numerically controlled cutting 8 and part number is marked on each part.
- surface treatment 16 by pickling is performed and electrostatic painting powder is scattered.
- far infrared ray baking 19 is performed.
- Process C is suitable for the assembly and painting of not only subassembled members but also outfittings and deformed pipes.
- pre-painting heat baking 17 or fluidized-bed coating powder painting 18 may be performed in place of far/near infrared ray baking.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
Claims (4)
- A painting method for a ship hull block or the like comprising the following steps:a baking step in which electrostatic painting powder (2) is scattered uniformly on both surfaces of a steel plate (1), which was subjected to shop primer painting or chemical conversion coating treatment after being shotblasted or pickled, any unnecessary portion of electrostatic painting powder scattered on the steel plate is removed by means of a suction nozzle (3) moving under numerical control, and thereafter the electrostatic powder (5) scattered on both surfaces of the steel plate is baked by a high-frequency baking method (6); andan intermediate assembly block step in which the baked steel plate (1) is cut into a predetermined shape (7) under numerical control, and a related steel plate is welded to the unpainted portion (4) of the cut steel plate so as to form an intermediate assembly block (9);
characterized bya major assembly block step in which a plurality of intermediate assembly blocks (9) are welded to each other to form a major assembly block (10); andan integrated assembly block step in which the major assembly block (10) is subjected to secondary surface treatment (11) by pickling and thereafter to secondary painting (12) before forming an integrated assembly block (13). - A painting method for a ship hull block or the like comprising the following steps:a welding assembly step in which a steel member having a required sectional area is formed by appropriately assembling a plurality of strip-shaped steel plates, which are cut and marked under numerical control, the strip-shaped steel plates being cut from a steel plate which was subjected to shop primer painting or chemical conversion coating treatment after having been shotblasted or pickled;an electrostatic painting powder scattering step in which the steel member having a required sectional area is subjected to surface treatment by pickling, and thereafter electrostatic painting powder is uniformly scattered on the entire surface of the steel member;an unpainted portion forming step in which any unnecessary portion of the electrostatic painting powder on the steel member having a required sectional area is removed by means of a suction nozzle (3) moving under numerical control or by leaving an unpainted portion (4) on the steel member by masking,a baking step in which the remaining electrostatic painting powder (5) on the steel member having a required sectional area is baked by high-frequency baking or by prepainting heat-baking,a further welding step by which a related steel plate is welded to said unpainted portion of the steel member so as to form an intermediate assembly block (9), andwelding a plurality of the intermediate assembly blocks (9) together so as to form a major assembly block (10),subjecting the major assembly block (10) to secondary surface treatment (11) by pickling andthereafter performing secondary painting (12) on the major assembly block so as to form an integrated assembly block (13).
- A painting method for a ship hull block or the like comprising the following steps:a welding assembly step in which a steel member having a required sectional area is formed by appropriately assembling a plurality of strip-shaped steel plates, which are cut and marked under numerical control, the strip-shaped steel plates being cut from a steel plate which was subjected to shop primer painting or chemical conversion coating treatment after having been shotblasted or pickled;an electrostatic painting powder scattering step in which the steel member having a required sectional area is subjected to surface treatment by pickling, and thereafter electrostatic painting powder is uniformly scattered on the entire surface of the steel member;an unpainted portion forming step in which any unnecessary portion of the electrostatic painting powder on the steel member having a required sectional area is removed by means of a suction nozzle (3) moving under numerical control or by leaving an unpainted portion (4) on the steel member by masking,a baking step in which the remaining electrostatic painting powder (5) on the steel member having a required sectional area is baked by far infrared ray baking or near infrared ray baking,a further welding step by which a related steel plate is welded to said unpainted portion of the steel member so as to form an intermediate assembly block (9), andwelding a plurality of the intermediate assembly blocks (9) together so as to form a major assembly block (10),subjecting the major assembly block (10) to secondary surface treatment (11) by pickling andthereafter performing secondary painting (12) on the major assembly block so as to form an integrated assembly block (13).
- The painting method for a ship hull block or the like, according to claim 2, in which the remaining electrostatic painting powder on the steel member having a required sectional area is baked by infrared ray baking in addition to the highfrequency baking.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3731392A JP2999052B2 (en) | 1992-01-28 | 1992-01-28 | Method for coating hull block or the like |
DE69321223T DE69321223T2 (en) | 1992-01-28 | 1993-07-08 | Process for painting ship hull structures or the like |
DK93110942T DK0633069T3 (en) | 1992-01-28 | 1993-07-08 | Painting method for a hull or similar |
ES93110942T ES2124272T3 (en) | 1992-01-28 | 1993-07-08 | PROCEDURE FOR PAINTING SHIPS HATS OR THE LIKE. |
EP93110942A EP0633069B1 (en) | 1992-01-28 | 1993-07-08 | Painting method for a ship hull block or the like |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3731392A JP2999052B2 (en) | 1992-01-28 | 1992-01-28 | Method for coating hull block or the like |
EP93110942A EP0633069B1 (en) | 1992-01-28 | 1993-07-08 | Painting method for a ship hull block or the like |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0633069A1 EP0633069A1 (en) | 1995-01-11 |
EP0633069B1 true EP0633069B1 (en) | 1998-09-23 |
Family
ID=26133316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93110942A Expired - Lifetime EP0633069B1 (en) | 1992-01-28 | 1993-07-08 | Painting method for a ship hull block or the like |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0633069B1 (en) |
JP (1) | JP2999052B2 (en) |
DE (1) | DE69321223T2 (en) |
DK (1) | DK0633069T3 (en) |
ES (1) | ES2124272T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102527617A (en) * | 2010-12-15 | 2012-07-04 | 鞍钢股份有限公司 | Production method of color-painted furniture plate |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0824781A (en) * | 1994-07-18 | 1996-01-30 | Mitsubishi Heavy Ind Ltd | Method for coating hull block |
KR20010040921A (en) * | 1998-02-17 | 2001-05-15 | 메리 이. 보울러 | Method for producing powder coatings |
US6451117B1 (en) | 2000-08-11 | 2002-09-17 | Ford Global Tech., Inc. | Paint mask and a method for utilizing the same |
CN100440294C (en) * | 2002-07-03 | 2008-12-03 | Nec液晶技术株式会社 | LCD unit with input pixel data reregulating circuit |
KR100639277B1 (en) * | 2005-04-20 | 2006-10-27 | 주식회사 융진 | Carrier for removing primer coated with angle |
JP2018122371A (en) * | 2017-01-30 | 2018-08-09 | 株式会社三井E&Sホールディングス | Coating film polishing device and die steel material processing system |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5017444A (en) * | 1973-06-18 | 1975-02-24 |
-
1992
- 1992-01-28 JP JP3731392A patent/JP2999052B2/en not_active Expired - Lifetime
-
1993
- 1993-07-08 DK DK93110942T patent/DK0633069T3/en active
- 1993-07-08 ES ES93110942T patent/ES2124272T3/en not_active Expired - Lifetime
- 1993-07-08 EP EP93110942A patent/EP0633069B1/en not_active Expired - Lifetime
- 1993-07-08 DE DE69321223T patent/DE69321223T2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102527617A (en) * | 2010-12-15 | 2012-07-04 | 鞍钢股份有限公司 | Production method of color-painted furniture plate |
CN102527617B (en) * | 2010-12-15 | 2013-09-04 | 鞍钢股份有限公司 | Production method of color-painted furniture plate |
Also Published As
Publication number | Publication date |
---|---|
DE69321223D1 (en) | 1998-10-29 |
ES2124272T3 (en) | 1999-02-01 |
JPH05200359A (en) | 1993-08-10 |
DK0633069T3 (en) | 1999-06-14 |
DE69321223T2 (en) | 1999-05-27 |
EP0633069A1 (en) | 1995-01-11 |
JP2999052B2 (en) | 2000-01-17 |
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