CN1159113C - Method of repairing finishing coat of motor vehicle - Google Patents

Abstract

The present invention relates to a method for repairing finishing coat of motor vehicles, particularly to a method for repairing micro-damage of finishing coat of motor vehicles, which comprises the steps of old finishing coat film removing, cleaning by a cleaning agent, filling by fine particle bottom ash, grinding by dry abrasive paper, adhesive adding, finishing coat spreading, mirror surface glazing by clear finishing coat, grinding by waterproof abrasive paper and fine grinding by grinding paste. The present invention is characterized in that after the step of grinding by the dry abrasive paper, proper amount of adhesive is added; the micro-damage of finishing coat is dried in the air for 3 to 50 seconds at the normal temperature of 10 to 35 DEG C, and then the steps of finishing coat spreading and post treatment are carried out. The method can thoroughly repair the tiny scratches on the surface of a motor vehicle, and ensure that the repaired surface of the motor vehicle is smooth and flat; the finishing coat has the same color, and users can not find out the repairing trace with a visual method.

Description

A kind of method of repairing finishing coat of motor vehicle

The present invention relates to a kind of method of repairing finishing coat of motor vehicle, the invention particularly relates to a kind of method of repairing finishing coat of motor vehicle microlesion.

At present, domestic in China because the development of automotive industry, corresponding maintenance industry also gradually prosperity get up.And repair for the finish paint of automotive surfaces, then be the most general and common in the maintenance.Generally appear at scuffing, chap, wound, come off at automotive surfaces, aging person, all car must be delivered to repair shop and go to repair.And the repairing of Auto repair shop no matter the damage of bodywork surface is slightly or serious, all will be wiped the finish paint of former damaged portion in large area off, sprays paint and glazing after the cleaning again, and needs for a long time.This method does not have practical value for minute scratch marks aspect economy and the timeliness.In fact, when cut about several centimetres appearred only having in vehicle body, people often can't repair.

Therefore, when minute scratch marks occurring, people wish to adopt a kind of effectively, save time, method that expense is low, go to address this problem.Develop into now, have only following several processing method: 1, adopt the method for homemade touch-up paint pen, three for example domestic patents (patent No.: 94241544,94241938,94242656) just told about the method that solves this type of problem.Homemade touch-up paint pen generally is a kind of one to two kind of paint, portable, as can to smear pen that is equipped with, and it only can play the temporary transient antirust and the simplest function of smearing.2, the external method of repairing pen of employing, for example Britain's Laue gets the HOLTS repairing pen that global group releases.External repairing pen generally is the reparation articles for use by several bottles of inner wrappings, as bottom ash, grinding agent, paint etc., with several reparation apparatus, as wood particle, sand paper, abrasive cloth etc., be packaged together in the etui, the maintenance personal can carry out the cut reparation with above-mentioned articles for use by the desired method of its specification then.Because the limitation of its restorative procedure, this repairing pen also can only play temporary transient antirust and certain decoration functions, and finally still will remove to carry out the large tracts of land touch-up paint, could repair cut comparatively completely to repair shop.This shows, for minute scratch marks, the restorative procedure that also do not have at present effectively, save time, expense is low.

In order to overcome the shortcoming of above-mentioned technology, the invention provides a kind of new method for repairing and mending.Can repair the automotive surfaces minute scratch marks up hill and dale, and make the automotive surfaces after the repairing reach smooth, bright and clean, the tone of finish paint is consistent, and adopts visual method can't observe out the repairing vestige.It below is exactly relevant statement of the present invention.

By the document of general touch-up paint as can be known, the conventional steps of clear depainting is use earlier the paint stripper depainting, simultaneously for fear of the influence of the remaining wax in paint stripper surface, and must be with solvent or nertralizer scouring injured surface.For clearance clean after, can adopt technologies such as filling up particulate bottom ash (" particulate bottom ash " is exactly said usually " putty "), polishing, japanning, finish, polish and wax.But adopt above method, when removing big cut, have effect preferably.Can only use above-mentioned technology for handling small cut, the especially cut below several centimetres, when being easy in the end polish enamelled coating be destroyed or expose bottom ash.Making a concrete analysis of its principle, mainly is that the result causes the adhesion of bottom ash and damage surface, bottom ash and lacquer not enough, and above-mentioned situation occurs because cut is too little.Therefore, by the present invention, after the polishing of conventional touch-up paint flow process, need coat an amount of polyvinyl alcohol, and carry out the air-dry of certain hour.Even phase reaction takes place and generates firm combination in these polyvinyl alcohol and bottom ash, tightly attached to damaged surface.And carry out bonding, permeable reactive at the gummed interface with subsequently japanning, and make that damaged interface, bottom ash, lacquer are molten to be one, be convenient to polishing, and strengthen the uniformity of tone.Be fit to air-dry time and temperature but how to control, this is a critical problem.This method required normal temperature 10-35 ℃ of air-dry 3-50 second because under this condition osmotic effect the best, the most favourable polishing, thus can thoroughly repair minute scratch marks.

The objective of the invention is to be achieved through the following technical solutions:

At first, the method for said a kind of repairing finishing coat of motor vehicle microlesion, its Hotfix comprises that old paint film depainting, cleaning agent cleaning, particulate bottom ash are filled up, dry abrasive paper polishing, japanning, minute surface varnish Lacquer finish, silicon carbide paper are ground, the abrasive pastes correct grinding.It is characterized in that after dry abrasive paper polishing, will coating an amount of polyvinyl alcohol normal temperature 10-35 ℃ of air-dry 3-50 second, post processing such as paint then.

Simultaneously, after filling up the particulate bottom ash, also dry at least 15-60 second, polish again.And dry abrasive paper polishing back 5-60 will coat polyvinyl alcohol in second.

By the requirement of this method, the repairing pen that packing forms can thoroughly, permanently be eliminated the automotive surfaces minute scratch marks, reaches convenient and practicality.This method can be repaired the cut that scratches apart from only there being 2 millimeters, and repairs the back aberration less than Δ 0.3, adopts visual method can't observe out the repairing vestige.

Embodiment 1: for the Honda Accord automobile of a shadow scratch, vehicle body side has a cut 3.2cm, the position that can directly scratch with the dry abrasive paper polishing, the unstable paint film of its surrounding edge is thoroughly ground, with the cleaning cloth adhesional wetting interface cleaning agent spot that it is surperficial, oil stain, wax stain and dust thoroughly clean, use particulate putty (atom ash) to fill up the cut position again, polish to smooth surface with dry abrasive paper after 30 fens kinds, coat an amount of polyvinyl alcohol then, under the room temperature air-dry 10 seconds, after the color of mending paint and the color of being repaired car checked and approved, the container of finishing touch-up paint was fully shaken 2 minutes, to coat with lacquer liquid even fully after, brush and repair the position, after 20 minutes, minute surface varnish waved after evenly carry out Lacquer finish, make and repair the position and keep a little higher than former vehicle body lacquer painting; When drying varniss solidifies after 4 hours, with silicon carbide paper with lacquer painting drip and brush mark gently water polish back and forth to the same smooth surfaces of former vehicle body, with bright grinding agent the roll line of repairing the position is ground again, lacquer painting is desalinated gradually, repairing position and former vehicle body lacquer painting with the naked eye can't be distinguished.

Example 2 a: motorcycle is arranged, cylinder cap has one 4.5 centimetres of cuts, earlier with the come off dust such as spot, oil stain, wax stain of position light face of powerful paint stripper cleaning, the position of using particulate putty (atom ash) to repair is again filled up fully, polishes to the dustiness of level and smooth and thorough clean surface with dry abrasive paper; Coat an amount of polyvinyl alcohol then, under the room temperature air-dry 30 seconds, after the color and the color of being repaired vehicle body of mending paint checked and approved, the container of finishing touch-up paint fluctuate 2 fens kinds to coat with lacquer liquid evenly after, brush the repairing position again; After 20 minutes, minute surface varnish is waved 30 seconds to evenly carrying out Lacquer finish, make the repairing lacquer painting keep a little higher than former vehicle body lacquer painting; When drying varniss solidifies after 4 hours, with silicon carbide paper with lacquer painting drip and brush mark water (can not with annular polishing) same plane of polishing back and forth gently to former vehicle body, with bright abrasive pastes the roll line position of repairing the position is ground again, old lacquer painting is desalinated gradually, its repairing position and former vehicle body lacquer painting with the naked eye can't be distinguished.

Claims (3)

1, a kind of method of repairing finishing coat of motor vehicle, its program comprises that old paint film depainting, cleaning agent cleaning, particulate bottom ash are filled up, dry abrasive paper polishing, japanning, minute surface varnish Lacquer finish, silicon carbide paper are ground, the abrasive pastes correct grinding, it is characterized in that after the dry abrasive paper polishing, coat an amount of polyvinyl alcohol, normal temperature 10-35 ℃ of air-dry 3-50 second, and then paint, minute surface varnish Lacquer finish, silicon carbide paper grind, the post processing of abrasive pastes correct grinding.

2, method according to claim 1 is characterized in that filling up after the particulate bottom ash, dry at least 15-60 second, carries out the dry abrasive paper polishing again.

3, method according to claim 1 is characterized in that dry abrasive paper polishing back 5-60 will coat polyvinyl alcohol in second.