JP2006122821A - Sheet metal surface-treatment method, putty material, and coating agent - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet metal surface-treatment method that effects the efficiency and unskillfulness in a sheet metal repairing of automobile bodies and a sheet metal surface treatment using putty, to provide a putty material and to provide a coating agent. <P>SOLUTION: In finish putty working to apply resin putty to a portion to be coated and to polish it prior to the step of coating the sheet metal surface, the sheet metal surface treatment method comprises at first using a black or dark color putty material 5 and making possible of observation with eyes of subtle unevenness by means of gloss by spraying a high boiling point weak solvent (polishing material) 6 during the polishing to temporarily making the face to be polished wet, practicing the smoothing working by confirming the unevenness, after the completion of the polishing of the putty material 5, applying a coloring strip paint (confirmation agent) that is strippable from the putty face after drying the putty, conducting the final confirmation by the observation with eyes of the subtle unevenness by means of gloss of the coated face, stripping the colored strip paint film after the drying and conducting the next coating step. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet metal surface processing method such as repair work for dents and scratches on a painted surface of a vehicle or the like, and other pre-painting treatment work for smoothing the surface of the sheet metal with a putty, and putty materials and coating agents used in the method It is about.

  Repairs have been made for minor car accidents, body dents, and scratches on painted surfaces. For repair, peel off the damaged part coating surface in an appropriate range (damaged part peeling process), repair the dent (sheet metal process), smooth the surface with sheet metal putty (sheet metal putty process), and surface with finishing putty Smoothing is performed (finishing putty process), and then a painting process for base coating and finishing coating is performed.

  More specifically, in the damaged part peeling step, the old coating film at the repair target part is peeled off, and the peeling range includes the peripheral part of the damaged part.

  In the sheet metal process, a washer is welded (stat welding) to a recessed portion, hammering (flattening of the surface by striking) is performed while pulling the washer, and the washer is separated after processing (Patent Document 1: Japanese Patent Application Laid-Open No. Hei 8-257576). Publication: FIGS. 3 and 5).

  In the sheet metal putty process, the sheet metal putty is applied to the portion where the coating film is peeled, and after drying, is polished with 80 to 100 # abrasive paper. In the finishing putty process, a resin putty is applied to the range of the surrounding old paint film and polished with 120 to 180 # polishing paper (Patent Document 2: JP-A-9-192590, column 0002).

  In Patent Document 2 and Patent Document 3 (Japanese Patent Laid-Open No. 10-192777), the surface of the damaged surface is smoothed by using a jig (roller or the like) after applying the putty and before curing the composition on the putty. It has been proposed to simplify the putty process such as a means for leveling a resin putty applied with a corresponding spatula and coating it with a spray putty.

FIG. 3 and FIG. 5 of JP-A-8-257639. 0002 column of JP-A-9-192590. JP-A-10-192777.

  In the above-mentioned conventional repair method, the surface smoothing operation is carried out while confirming by visual inspection or touch, especially when polishing after application of sheet metal putty in the putty process or wear reduction after application of resin putty. It is necessary. In particular, skill is required for confirmation by touch.

  Of course, the smoothing means using a jig or the like after applying the putty cannot be used as a putty finish when repairing a vehicle such as a passenger car that requires a delicate finish. Must rely on skilled workers.

  Therefore, the present invention provides a sheet metal surface processing method for performing a novel sheet metal putty work process that can be applied to the above-described repair method and a general sheet metal surface pre-painting process, a novel putty material used in the processing method, and A coating agent for confirmation is proposed. Further, the present invention proposes a dent repairing means suitable for the processing method particularly in sheet metal repair.

  The sheet metal surface processing method according to the present invention uses a black or dark-colored putty material first in a finishing putty operation in which a resin putty is applied to a portion to be coated and polished before the sheet metal surface is coated. At the same time, the high boiling point weak solvent is sprayed and applied during polishing to make the polished surface temporarily a wet surface, allowing the subtle unevenness to be visually recognized by gloss, and checking the unevenness to smooth the polished surface. The operation is performed (claim 1).

  Accordingly, the degree of the polishing finish can be easily confirmed by visual observation, and the operator can easily and easily recognize the necessary portion for polishing, so that the polishing finishing operation can be carried out promptly without requiring skill.

  In addition, in the finishing putty operation, the sheet metal surface processing method according to the present invention, secondly, after the polishing of the resin putty material is applied, a confirmation colorant that can be peeled off from the putty surface after the putty drying is applied, and the applied surface The final confirmation by visual inspection of subtle irregularities by the gloss of [2] is performed, the dried colorant coating for confirmation is peeled off, and the next painting step is performed (Claim 2).

  Therefore, the finished state of the finished putty (surface irregularity state) can be confirmed, and since it peels after confirmation, there is no problem in the next painting process.

  Moreover, the putty material according to the present invention is a finishing resin putty used on the surface of a sheet metal, and is characterized by being mixed with a black or dark pigment (Claim 5). The colored coating agent is characterized in that it can be peeled off after application and drying and has a quick drying property with respect to the dried surface of the finishing resin putty used for the sheet metal surface processing operation.

  Further, the processing method of the surface of the sheet metal of the present invention is a process corresponding to the previous damaged part peeling step, the sheet metal step, and the sheet metal putty step before the finishing putty operation (the processing method of claims 1 to 3), Before peeling off the old paint film at the repair target, after roughing and hammering with an adhesive puller, peel off the old paint film only at the part where the stat is welded, and then apply the washer's stat to perform sheet metal processing. And after completion of the sheet metal work, the coating film peeling portion is filled with an epoxy resin putty (claim 4).

  Therefore, it is possible to narrow the area to be repaired by roughing and hammering with an adhesive puller before peeling the damaged part and limiting the peeling range, and filling the area where the paint is peeled off with an epoxy resin putty. This simplifies the sheet metal putty process.

  Since this invention is the above structure, in the sheet metal process (Claim 4) including coating film peeling, reduction of a coating repair area and simplification of an operation | work are implement | achieved. In the finishing putty operation (Claim 1), the degree of polishing finish can be easily confirmed visually, and a reliable polishing operation is performed. Further, the final confirmation of finishing (claim 2) is also easily made by visual observation, so that the work can be carried out efficiently without requiring skill.

  Next, an example in which the embodiment of the present invention is repaired to a portion where a coating surface such as a vehicle is scratched and recessed will be described. The entire repair method consists of a sheet metal process including an old paint film peeling process corresponding to the previous damaged part peeling process and the sheet metal process, and an order of the putty process before the painting process corresponding to the previous sheet metal putty process and the finishing putty process. Made in

  The sheet metal process is performed in the order of the front sheet metal work, the peeling work, and the rear sheet metal work. 1), attach an adhesive puller 1 (FIG. 1), apply hammering while roughing, and pull out the area around the repaired area to make it the original state without any dents. This can narrow the repair range.

  The peeling work is to peel off the old coating film 2 at a place necessary for the repairing work, and the peeling place peels only the place 3 where the washer is stud-welded in the subsequent rear sheet metal work (FIG. 2).

  In the post-sheet metal work, a washer is stud-welded to the panel metal part (general steel plate, high-tensile steel plate, aluminum plate, etc.) of the old paint film peeling point 3 to correct distortion by hammering. At this time, consideration is given to heating, cooling, hammering strength and the like according to the material of the metal. In particular, in the present invention, since there are few exfoliation parts of the old paint film 2, accurate and appropriate distortion removing work is performed while irradiating the old paint film 2 with light and visually recognizing the reflected light (gloss) of the old paint film 2 Can be implemented. When the distortion removal is completed, the washer is separated.

  When the sheet metal process is completed, a putty process is performed. The putty process includes a filling operation for backfilling the peeled portion 3, a finishing putty operation, and a confirmation operation.

  In the filling operation for backfilling, the peeling portion 3 is filled with a filler 4 made of an epoxy resin. This backfilling operation corresponds to the conventional sheet metal putty process. However, since the area of the peeled portion 3 is particularly small, the polishing operation for the putty as in the previous process for strain adjustment is not required.

  In the finishing putty operation, the putty material 5 is first applied to the range where the surface of the backfilling part and the old coating film 2 around the backfilling part exist. This putty material 5 is a conventional finishing resin putty, which is a black or dark color putty material obtained by mixing a black or dark pigment.

  After applying the putty material 5, polishing is performed with about 180 # polishing paper to smooth the surface, and when the polishing is almost finished, the polishing material 6 is sprayed. This polishing material 6 is a high-boiling weak solvent (difficult to dry and easy to be integrated with the putty material and difficult to elute). Remarkable irregularities are visually recognized (FIG. 3). As a result, the portion requiring correction is re-polished to finish the putty operation.

  When the putty polishing finish is completed, a confirmation work is performed. The confirmation work is the application of the colored strip paint (coloring coating agent for confirmation) 7 to the polished surface after finishing the putty polishing finish (FIG. 4I). ).

  The colored strip paint 7 can be peeled off after application and drying, and has a quick drying property. By wetting the polished surface immediately after application, fine unevenness due to gloss (reflected light) can be visually recognized. The surface finish state can be confirmed reliably and easily by this visual observation, and after drying, the dry film 7a of the paint 7 is peeled off (FIG. 4B), and then the same painting process as before is carried out.

  In addition, this invention is not limited to the thing regarding the vehicle repair which requires the above-mentioned sheet-metal process, When the sheet-metal process is not required, the putty material 5 is apply | coated as it is with respect to a damage | wound, or appropriate | suitable It is only necessary to carry out a putty process for applying the putty material 5 after surface treatment (removal of the old paint film, etc.), and put the sheet metal surface on other articles regardless of the sheet metal of the vehicle body. The present invention can be applied to all the processes formed by the above method.

Explanatory drawing of the puller mounting state of embodiment of this invention. Explanatory drawing of the peeling location. Explanatory drawing (cross-sectional view) of the filling operation. Explanatory drawing (cross-sectional view) of the finishing putty operation. Explanatory drawing (sectional drawing) of the confirmation work.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Puller 2 Old coating film 3 Peeling part 4 Filler 5 Putty material 6 Polishing material 7 Colored strip paint (coloring coating agent for confirmation)

Claims (6)

  In the finishing putty operation where resin putty is applied to the part to be coated and polished before the coating process on the surface of the sheet metal surface, a dark-colored putty material is used and a polishing material consisting of a high-boiling weak solvent is sprayed during polishing. Applying the polishing surface as a temporarily wet surface, enabling the subtle unevenness to be visually recognized by gloss, and performing the smoothing operation of the polishing surface by confirming the unevenness. Processing method.   In the finishing putty operation where the resin putty is applied and polished to the place to be coated before the coating process on the surface of the sheet metal surface, a confirmation colorant that can be peeled off from the putty surface after the putty material is polished and dried A method for processing a surface of a sheet metal, characterized in that the coating is subjected to final confirmation by visual observation of delicate unevenness by gloss of the coated surface, and the dried colorant coating for confirmation is peeled off to perform the next painting step.   In finishing putty work where a resin putty is applied to the surface to be coated and polished before the painting process on the surface of the sheet metal, a black or dark putty material is used, and a polishing material consisting of a high boiling weak solvent during polishing The polishing surface is temporarily applied as a wet surface by spraying, and the polishing surface is smoothed by visually recognizing subtle irregularities due to gloss.After polishing of the resin putty material, the putty surface is dried after putty drying. It is characterized by applying a colorant for confirmation that can be peeled off, performing final confirmation by visual inspection of subtle unevenness by gloss of the coated surface, and peeling off the dried colorant film for confirmation and performing the next painting process The processing method of the sheet metal surface.   Before peeling off the old paint film at the repair target, after roughing and hammering with an adhesive puller, peel off the old paint film only at the part where the stat is welded, and then apply the washer's stat to perform sheet metal processing. 4. A sheet metal surface processing method comprising: performing a finishing putty operation according to claims 1 to 3;   A putty material characterized in that it is a finishing resin putty used on the surface of a sheet metal, and is made by mixing a black or dark pigment.   A color coating agent for finishing confirmation, which is capable of being peeled off after application and drying and has a quick drying property with respect to a dry surface of a finishing resin putty used on a sheet metal surface.

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