CN117659869A - Preparation method of repair varnish and repair method of vehicle matt paint - Google Patents
Preparation method of repair varnish and repair method of vehicle matt paint Download PDFInfo
- Publication number
- CN117659869A CN117659869A CN202311465567.1A CN202311465567A CN117659869A CN 117659869 A CN117659869 A CN 117659869A CN 202311465567 A CN202311465567 A CN 202311465567A CN 117659869 A CN117659869 A CN 117659869A
- Authority
- CN
- China
- Prior art keywords
- repair
- varnish
- paint
- spray gun
- spraying
- 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
- 239000003973 paint Substances 0.000 title claims abstract description 344
- 230000008439 repair process Effects 0.000 title claims abstract description 311
- 239000002966 varnish Substances 0.000 title claims abstract description 242
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 104
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003085 diluting agent Substances 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims description 148
- 238000005498 polishing Methods 0.000 claims description 27
- 230000002950 deficient Effects 0.000 claims description 9
- 238000000889 atomisation Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 11
- 230000007547 defect Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 239000011435 rock Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 244000137852 Petrea volubilis Species 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 6
- 229910021389 graphene Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 235000003913 Coccoloba uvifera Nutrition 0.000 description 3
- 240000008976 Pterocarpus marsupium Species 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013067 intermediate product Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
- 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
- B05D3/12—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 mechanical means
-
- 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
-
- 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
- B05D3/02—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 baking
- B05D3/0254—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D201/00—Coating compositions based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/80—Processes for incorporating ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a preparation method of repair varnish, which comprises the steps of mixing and fully and uniformly stirring a repair varnish main agent, a curing agent, a diluent and interface water according to a certain proportion to obtain the repair varnish. On the other hand, the invention provides a repairing method for the vehicle matte paint, which is characterized in that the prepared repairing varnish is utilized to obtain a matte layer on the surface of a repairing bright layer by changing spraying parameters and the method, and the obtained composite repairing paint surface can achieve the same effect as the original matte paint surface. The prepared repair varnish breaks through the difficult problem that the matte paint cannot be repaired on line by a special repair process; compared with the existing repair scheme that the matte paint depends on replacement parts and whole vehicle back spraying, the traditional repair process form is broken through, the repair process is simplified, the repair cost is reduced, and the repair efficiency is improved.
Description
Technical Field
The invention relates to the technical field of automobile coating and spraying, in particular to a preparation method of repair varnish and a repair method of vehicle matt paint using the repair varnish.
Background
The matte color coating is also called as a matte paint, is one of automobile coating, and the glossiness of the common matte paint is 30% -40% (60 degrees) after being sprayed, so that the aesthetic feeling and texture of an automobile can be improved by spraying the matte paint, and the paint is deeply favored by young consumers.
Compared with the traditional varnish, the matt varnish has the characteristics of high extinction efficiency, high hardness and the like, and the matt varnish has the effect of forming the rough surface of a paint film by adding a small amount of matt powder with high specific surface area into the base varnish. However, the requirements of the spraying environment such as temperature and humidity, cleanliness, technological parameters and the like are more severe than those of the varnish, and the matte varnish is difficult to batch and high in manufacturing cost due to the uniqueness and difficult repairability of the matte varnish surface, so that the matte varnish is often embodied in the customized production of high-end vehicle types.
The repair of the matt paint surface commonly used at present is solved by adopting a mode of replacing parts or re-spraying the whole vehicle body. Paint repair is also called paint repair, and the normal process of paint repair involves steps of polishing, paint spraying and the like, and the luster and the hue of the matt paint surface are changed after polishing and spraying, so that the matt paint surface is different from the original paint surface, and the appearance of a product is influenced. In order to ensure the appearance of the product, manufacturers generally replace the surface parts of the defective products with the qualified matte paint after spraying, or polish and planarize the defective paint surface and then spray the whole vehicle body again. In the existing compact process for coating automobiles, the matte automobile paint surface repair adopts a single line-passing spraying mode of matte parts or a repainting mode of an integral automobile body after polishing of defective paint surfaces, so that the process occupies beats, unnecessary production waste is caused, and the production efficiency is low.
Because the matte paint has the characteristic of difficult restoration, the conventional matte paint surface repair method can firstly prepare a qualified glossy paint surface on a paint component, then spray the matte paint, and the preparation process also involves qualified and unqualified intermediate products, and the defective intermediate products need to be repaired, and finally prepare a matte varnish layer on the glossy varnish layer of the qualified intermediate products, thereby finally obtaining the matte paint component. The preparation process relates to repairing the bright paint surface, but does not relate to the repairing problem of the matte paint surface, in other words, the bright paint surface repairing process is adopted in a compromise for avoiding the repairing of the matte paint surface. Moreover, the repair method has complex process, involves at least two varnish spraying processes, and has high spraying cost.
Disclosure of Invention
The invention aims to overcome the defect of high repair difficulty of the existing matte paint surface, and provides a preparation method of repair varnish and a repair method of the vehicle matte paint using the repair varnish, which not only solve the problem that a matte paint surface product is difficult to repair directly or cannot be qualified completely, improve the product qualification rate, but also effectively avoid the cost waste caused by the preparation process of a matte part.
In order to solve the technical problems, the invention provides the following improvements: in one aspect, a method for preparing repair varnish is provided, wherein the repair varnish is obtained by fully and uniformly mixing and stirring a repair varnish main agent, a curing agent, a diluent and interface water according to a certain proportion. On the other hand, the invention provides a repairing method for the vehicle matte paint, which is characterized in that the prepared repairing varnish is utilized to obtain a matte layer on the surface of a repairing bright layer by changing spraying parameters and the method, and the obtained composite repairing paint surface can achieve the same effect as the original matte paint surface.
The invention provides a preparation method of repair varnish, which comprises the following steps:
step A1, adding a varnish main agent for repairing into a container;
step A2, adding a varnish curing agent and a diluent into the container, and fully and uniformly stirring to obtain a pre-repair varnish, wherein the volume ratio of the varnish main agent to the varnish curing agent to the diluent is 1:0.3-1.5:0.5-2.0;
and A3, adding interface water into the pre-repair varnish obtained in the step A2, and fully and uniformly stirring to obtain the repair varnish, wherein the volume ratio of the pre-repair varnish to the interface water is 3:0.5-1.5.
Further, the volume ratio of the varnish main agent, the varnish curing agent and the diluent is 1:0.6-0.8:1.0-1.4.
Further, the volume ratio of the pre-repair varnish to the interface water is 3:0.8-1.2.
The invention also provides a repair method of the vehicle matt paint by using the repair varnish, which comprises the following steps:
step B1, polishing defective positions of the paint surfaces to form paint surfaces to be sprayed;
step B2, spraying the repair color paint on the surface to be painted formed in the step B1 repeatedly and uniformly until the repair color paint covers the surface to be painted, so as to obtain a pre-repair color paint surface;
step B3, curing the pre-repair color paint surface, and obtaining the repair color paint surface after curing;
step B4, uniformly spraying the repair varnish on the repair colored paint surface until the repair varnish covers the repair colored paint surface formed in the step B3, so as to obtain a pre-repair varnish paint surface;
step B5, curing the pre-repair varnish paint surface to obtain a repair varnish paint surface;
step B6, uniformly spraying the repair varnish on the repair varnish paint surface by using a spraying device, atomizing the repair varnish to the repair varnish paint surface by controlling the air pressure and the fan amplitude of the spraying device, and obtaining a pre-repair matte varnish paint surface by utilizing the atomization effect of the repair varnish;
and B7, curing the pre-repair matte varnish paint surface to obtain the repair matte varnish paint surface.
Further, in the step B1, sand paper with the mesh number of 800# -3000# is used for polishing; more preferably, the polishing is carried out by using sand paper with the mesh number of 2000# -2500 #.
In the step B2, the tool for spraying and repairing the colored paint is a spray gun, and the pressure range of the spray gun is 0.5-1.5bar; the ejection amount of the spray gun is rotated to 1-3 circles by the ejection amount control knob, and the spray gun is used for spraying repeatedly, wherein the value of the reciprocating times is 3-15 times; the width of the fan of the spray gun is adjusted to be minimum, and the fan control knob of the spray gun is adjusted to 1 circle (usually 1-7 circles, the fan corresponding to 1 circle is minimum, and the corresponding circles of the spray guns of different models are different). More preferably, the lance pressure range value is 0.5-0.7bar; the ejection amount of the spray gun is rotated to 1-1.5 circles by an ejection amount control knob; the range of the reciprocating times is 6-10 times. Particularly, the phenomenon of shining paint surface caused by excessive discharge amount at one time is avoided in the spraying process.
Further, in the step B4, the tool for spraying the repair varnish is a spray gun, and the pressure range of the spray gun is 0.5-2.0bar; the ejection amount of the spray gun is rotated to 3-10 circles by the ejection amount control knob, and the spray gun is used for spraying repeatedly, wherein the value of the reciprocating times is 3-15 times. More preferably, the lance pressure range value is 0.7-1.5bar; the ejection amount of the spray gun is rotated to 3-6 circles by an ejection amount control knob; the range of the reciprocating times is 6-10 times. Particularly, the phenomenon of shining paint surface caused by excessive discharge amount at one time is avoided in the spraying process.
Further, in the step B5, curing is performed in a baking mode by using a baking gun, wherein the temperature range of the baking gun is set to be 450-800 ℃, and the baking time range of the baking gun is set to be 5-60 seconds. More preferably, the baking gun is set to a temperature range of 620-680 ℃ and the time range of baking using the baking gun is 15-30 seconds.
Further, in the step B6, the tool for spraying the repair varnish is a spray gun, and the pressure range of the spray gun is 0.5-2.0bar; the ejection amount of the spray gun is rotated to 1-3 circles by the ejection amount control knob, and the spray gun is used for spraying repeatedly, wherein the value of the reciprocating times is 3-15 times; the fan width of the gun is adjusted to a maximum by adjusting the fan control knob for the spray to 7 turns (or other larger number). More preferably, the lance pressure range value is 1.5-2.0bar; the ejection amount of the spray gun is rotated to 1-1.5 circles by an ejection amount control knob; the range of the reciprocating times is 7-12 times. In particular, the varnish is completely atomized on the repair varnish surface, so that the varnish achieves the atomization effect.
Further, in the step B7, the curing is performed in a baking mode by using a baking lamp, wherein the temperature range of the baking lamp is set to be 80-150 ℃, and the baking time range of the baking gun is set to be 5-60 minutes. More preferably, the baking lamp is set to a temperature range of 100-120 ℃ and the baking time range of 8-15 minutes using the baking gun.
Compared with the prior art, the invention has the beneficial effects that:
1. the purpose of repairing the matte varnish by taking the matte varnish as a repairing raw material is realized, and the limitation of raw materials is broken through;
2. the batch online repair process of the matte paint is realized, and the traditional repair process that the matte paint depends on replacement parts and whole vehicle back spraying is eliminated;
3. the prepared repair varnish breaks through the difficult problem that the matte paint cannot be repaired on line by a special repair process; compared with the existing repair scheme that the matte paint depends on replacement parts and whole vehicle back spraying, the traditional repair process form is broken through, the repair process is simplified, the repair cost is reduced, and the repair efficiency is improved.
Drawings
FIG. 1 is a flow chart of a method for preparing repair varnish;
FIG. 2 is a flow chart of a method of reworking a vehicle matt paint;
FIG. 3 is a flow chart of a repair method of a vehicle matt paint according to embodiment three;
FIG. 4 is a schematic diagram showing the effect of the repair method of the vehicle matt paint disclosed by the invention;
fig. 5 is a schematic diagram showing the effect of the conventional repair method of the matt paint (red frame area is "black print" effect).
Detailed Description
The invention is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "front", "rear", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances. Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
Embodiment one:
as shown in fig. 1, the embodiment provides a method for preparing repair varnish, which includes the following steps:
step A1, adding a varnish main agent for repairing into a container, wherein the model of the varnish main agent is KINO 6200K varnish;
step A2, adding a varnish curing agent and a diluent into the container, and fully and uniformly stirring the mixed solution by using a steel rule to obtain pre-repair varnish, wherein the volume ratio of the varnish main agent to the varnish curing agent to the diluent is 1:0.3-1.5:0.5-2.0, the model of the curing agent is KINO 6200 2K varnish curing agent, and the model of the diluent is KINO 6200 2K varnish diluent;
and A3, adding water at a joint (also called joint water or paint repair joint water) into the pre-repair varnish obtained in the step A2, wherein the water at the joint is LACS2K water at the joint (Vigorboom), and fully and uniformly stirring the mixed solution by using a steel rule to obtain the repair varnish, wherein the volume ratio of the pre-repair varnish to the water at the joint is 3:0.5-1.5.
It should be noted that, in some embodiments, in order to further enhance the use effect of the repair varnish, the volume ratio of the varnish main agent, the varnish curing agent and the diluent is 1:0.6-0.8:1.0-1.4, that is, for 1 volume of the varnish main agent, a varnish curing agent including but not limited to 0.6 volume, 0.7 volume and 0.8 volume, and a diluent including but not limited to 1.0 volume, 1.2 volume and 1.4 volume may be added; the addition volume of the varnish curing agent may be any value ranging from 0.6 to 0.8, and the addition volume of the diluent may be any value ranging from 1.0 to 1.4.
Likewise, in other embodiments, to optimize the final visual effect of the repair varnish, the volume ratio of the pre-repair varnish to the interface water is 3:0.8-1.2, that is, for 3 volumes of the pre-repair varnish, interface water may be added including, but not limited to, 0.8, 1.0, and 1.2 volumes of interface water, which may also be any value in the range of 0.8 to 1.2 volumes.
Repair spraying was performed using the repair varnishes prepared according to the method steps A1 to A3 described above, as well as the other two control varnishes. The preparation parameters and the final spray effect of the varnish are shown in the following table:
in the table:
the proportion 1 refers to the volume proportion of the varnish main agent, the varnish curing agent and the diluent;
the ratio 2 refers to the volume ratio of the pre-repair varnish to the interface water.
The repair varnish 01 is prepared according to the steps A1-A3, the glossiness and color difference of the final lacquer surface are close to the quality of the matt varnish product, and no appearance defects such as particles exist, so that the product meets the requirement of going out. The repair varnish 02 and 03 are prepared by using different blending parameters, wherein the final paint surface of the repair varnish 02 generates poor appearance of large-area particles, and the obtained matte paint surface cannot meet the requirements of vehicle departure; the appearance of the final paint surface of the repair varnish 03 has bright spots to generate color difference, and the obtained matte paint surface can not meet the requirements of vehicle discharge.
Embodiment two:
as shown in fig. 2, the present embodiment provides a repair method for a vehicle matt paint, for matching with the repair varnish disclosed in the first embodiment, the method comprising the following steps:
step B1, polishing the defective positions of the paint surfaces by using abrasive paper with the mesh number of 800# -3000# to form the paint surfaces to be sprayed, wherein, for finer polishing effect, the abrasive paper can also use abrasive paper with the mesh number of 2000# or 2500# or any mesh number of abrasive paper between the abrasive paper and the abrasive paper;
and B2, uniformly spraying the repair color paint on the surface to be sprayed formed in the step B1 repeatedly and repeatedly by using a spray gun with the model of the rock field LPH-101 until the repair color paint covers the surface to be sprayed to obtain a pre-repair color paint surface, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-1.5bar;
(2) The ejection volume control knob of the spray gun is rotated to 1-3 circles;
(3) The fan control knob of the spray gun is rotated to 1 circle, namely the fan width of the spray gun is adjusted to be minimum;
(4) Spraying repair color paint on the surface to be sprayed by using the spray gun for 3-15 times in a reciprocating way;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.5-0.7bar, (2) the discharge amount control knob is rotated to 1-1.5 circles, and the spray gun is used for spraying repair color paint on the surface to be sprayed with paint for 6-10 times, so as to obtain a pre-repair color paint surface with better color forming effect;
step B3, curing the pre-repair color paint surface to obtain a repair color paint surface, wherein the curing action can be performed by using equipment such as a hot baking gun or a baking lamp which is convenient to heat, and curing the paint surface by heating;
and B4, uniformly spraying the repair varnish prepared in the embodiment I on the repair paint surface by using a spray gun with the model of the rock field LPH-101 until the repair varnish covers the repair paint surface formed in the step B3, so as to obtain a pre-repair varnish paint surface, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 3-10 circles;
(3) Spraying repair varnish on the surface to be sprayed by using the spray gun for 3-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.7-1.5bar, (2) the discharge amount control knob is rotated to 3-6 circles, and the spray gun is used for spraying repair varnish on the surface to be sprayed with paint for 6-10 times;
step B5, curing the pre-repair varnish paint surface to obtain repair varnish paint surface, wherein heating equipment used in the curing action is a baking gun, the temperature range of the baking gun is set to be any value between 450 and 800 ℃, and the baking gun is used for baking the pre-repair varnish paint surface for at least 5 seconds and at most 60 seconds;
of course, in other embodiments, the temperature of the baking gun may also be set to include, but not limited to, 620 ℃, 630 ℃, 640 ℃, 650 ℃, 660 ℃, 670 ℃ and 680 ℃, or any value between 620 ℃ and 680 ℃ and baking the pre-repair varnish paint for 15-30 seconds;
and B6, uniformly spraying the repair varnish on the repair varnish paint surface by using a spray gun with the model of rock field LPH-101, atomizing the repair varnish to the repair varnish paint surface by controlling the air pressure and the fan amplitude of the spray gun, and obtaining the pre-repair matte varnish paint surface by utilizing the atomization effect of the repair varnish, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 1-3 circles;
(3) The fan control knob of the spray gun is rotated to 7 circles (7 circles are the values of the fan control knob corresponding to the maximum fan width of the spray gun of different types can be different for the spray gun of the type of the rock field LPH-101 used in the embodiment), namely the fan width of the spray gun is adjusted to be maximum;
(4) Spraying repair varnish on the surface to be sprayed by using the spray gun for 3-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 1.5-2.0bar, (2) the discharge amount control knob is rotated to 1.0-1.5 circles, and the spray gun is used for spraying repair varnish on the surface to be sprayed with paint for 7-12 times;
step B7, curing the pre-repair matte varnish to obtain a repaired matte varnish, wherein heating equipment used in the curing action is a baking lamp, the temperature range of the baking lamp is set to be any value between 80 and 150 ℃, and a baking gun is used for baking the pre-repair varnish for at least 5 minutes and at most 60 minutes;
of course, in other embodiments, the temperature of the baking lamps may also be set to include, but not limited to, 100 ℃, 110 ℃, and 120 ℃, or any value between 100 ℃ and 120 ℃ and baking the pre-repair varnish paint for 8-15 minutes.
The effect verification of the repair method of the vehicle matt paint is carried out through the 'matt fighter green' vehicle paint of a certain automobile brand. The average glossiness of the 'matte fighter green' vehicle paint under the 60-degree test condition at the factory is measured to be 32.6 (the 60-degree glossiness standard of the 'matte fighter green' vehicle paint is 30-40), namely, the glossiness of the vehicle paint which is not repaired by the method is 32.6 (60 degrees). After the treatment of the method steps, the average glossiness of the 'matte fighter green' under the 60-degree test condition is 34.5, namely, the glossiness of the matte paint after repair is not obviously different. Therefore, the problem that the matte varnish cannot be repaired on line can be overcome by combining the method disclosed by the embodiment with the repair varnish prepared by the embodiment I, and the purpose of repairing the matte varnish by taking the repair varnish as a repair raw material is realized.
Embodiment III:
referring to fig. 3, this embodiment discloses another repair method for a vehicle matt paint, which is different from the second embodiment in that the method is mainly aimed at the situation that the metal layer is exposed after polishing at the defect position on the premise of creating the idea based on the same invention. The method disclosed in the embodiment comprises the following steps:
step C1, polishing the defective position of the paint surface by using 400# 2000# abrasive paper to form a paint surface to be sprayed, wherein, for finer polishing effect, the 400# abrasive paper or 1000# abrasive paper or any mesh abrasive paper between the two can be used, and the step can polish the metal layer faster by using the abrasive paper with smaller mesh (higher roughness) and can have a certain shaping effect on the metal layer; during polishing, the polishing area is reduced as much as possible, and the polished colored paint layer and the polished varnish layer keep gradual and smooth coating of the edges of the paint surface, so that the step shape is avoided;
step C2, polishing the exposed metal layer in the step C1, and then spraying primer back and forth at the polished exposed bottom by using a spray gun until the exposed metal is covered by the primer, so as to obtain a pre-repair primer paint surface; wherein the pressure range value of the spray gun is regulated to any value between 0.5 and 1.5bar;
step C3, drying and polishing the pre-repaired primer paint surface to obtain a repaired primer paint surface, specifically, drying the pre-repaired primer paint surface by using a drying gun, and polishing the dried primer paint surface by using sand paper with the mesh number of 800# -3000#;
of course, in some embodiments, the abrasive paper may be any value with the mesh number of 2000# -2500#, so as to obtain finer polishing effect;
and C4, spraying the repair color paint on the repair primer paint surface prepared in the step C3 repeatedly and uniformly by using a spray gun with the model of the rock field LPH-101 until the repair color paint covers the repair primer paint surface to obtain a first layer of pre-repair color paint surface, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 3-10 circles;
(3) Spraying repair color paint on the repair primer paint surface by using the spray gun to reciprocate for 2-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.7-1.5bar, (2) the discharge amount control knob is rotated to 3-6 circles, and the spray gun is used for spraying repair color paint on the repair primer paint surface for 4-8 times in a reciprocating manner, so that a first layer of pre-repair color paint surface with better color forming effect is obtained;
step C5, curing the first layer of pre-repair color paint to obtain a first layer of repair color paint, wherein the curing action can be performed by using equipment such as a hot baking gun or a baking lamp which is convenient to heat, and curing the paint by heating;
and C6, uniformly spraying the repair varnish prepared in the embodiment I on the first layer of repair paint by using a spray gun with the model of the rock field LPH-101 until the repair varnish covers the first layer of repair paint formed in the step C5 to obtain a first layer of pre-repair varnish paint, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 3-10 circles;
(3) Spraying repair varnish on the painted surface of the first layer of repair colored paint by using the spray gun for 2-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.7-1.5bar, (2) the discharge amount control knob is rotated to 3-6 circles, and the spray gun is used for spraying repair varnish on the first layer of repair color paint surface for 4-8 times;
step C7, baking and polishing the first layer of pre-repair varnish paint surface, baking until the paint surface is solidified, and polishing the defect of the dried pre-repair varnish paint surface to be smooth by using sand paper with the mesh number of any value between 800 and 3000# to obtain the first layer of repair varnish paint surface;
of course, in other embodiments, the sand paper used in this step may be any value between 2000# -3000#, and in addition, the non-defective portion of the first layer of pre-repair varnish paint may be polished once by using the sand paper, so as to increase the adhesion of the subsequent coating;
and C8, spraying the repair color paint on the first layer of repair varnish paint surface formed in the step C7 repeatedly and uniformly by using a spray gun with the model of the rock field LPH-101 until the repair color paint covers the paint surface to be sprayed to obtain a second layer of pre-repair color paint surface, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-1.5bar;
(2) The ejection volume control knob of the spray gun is rotated to 1-3 circles;
(3) The fan control knob of the spray gun is rotated to 1 circle, namely the fan width of the spray gun is adjusted to be minimum;
(4) Spraying repair color paint on the surface to be sprayed by using the spray gun for 3-15 times in a reciprocating way;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.5-0.7bar, (2) the discharge amount control knob is rotated to 1-1.5 circles, and the spray gun is used for spraying repair color paint on the surface to be sprayed with paint for 6-10 times, so that a second layer of pre-repair color paint surface with better color forming effect is obtained;
step C9, curing the second layer of pre-repair color paint to obtain a second layer of repair color paint, wherein the curing action can be performed by using equipment such as a hot baking gun or a baking lamp which is convenient to heat, and curing the paint by heating;
and C10, uniformly spraying the repair varnish prepared in the embodiment I on the second-layer repair color paint surface by using a spray gun with the model of the rock field LPH-101 until the repair varnish covers the second-layer repair color paint surface formed in the step C9, so as to obtain a second-layer pre-repair varnish paint surface, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 3-10 circles;
(3) Spraying repair varnish on the painted surface of the first layer of repair colored paint by using the spray gun for 2-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 0.7-1.5bar, (2) the discharge amount control knob is rotated to 3-6 circles, and the spray gun is used for spraying repair varnish on the first layer of repair color paint surface for 4-8 times;
step C11, curing the second-layer pre-repair varnish paint surface to obtain a second-layer repair varnish paint surface, wherein heating equipment used in the curing action is a baking gun, the temperature range of the baking gun is set to be any value between 450 and 800 ℃, and the baking gun is used for baking the second-layer pre-repair varnish paint surface for at least 5 seconds and at most 60 seconds;
of course, in other embodiments, the temperature of the baking gun may also be set to include, but not limited to, 620 ℃, 630 ℃, 640 ℃, 650 ℃, 660 ℃, 670 ℃ and 680 ℃, or any value between 620 ℃ and 680 ℃ and the second layer of pre-repair varnish paint is baked for 15-30 seconds;
step C12, uniformly spraying the repair varnish on the second layer repair varnish paint surface by using a spray gun with the model of rock field LPH-101, atomizing the repair varnish to the second layer repair varnish paint surface by controlling the air pressure and the fan amplitude of the spray gun, and obtaining the pre-repair matte varnish paint surface by utilizing the atomization effect of the repair varnish, wherein the parameters of the spray gun are set as follows:
(1) The pressure range value of the spray gun is set to be 0.5-2.0bar;
(2) The ejection volume control knob of the spray gun is rotated to 1-3 circles;
(3) The fan control knob of the spray gun is rotated to 7 circles (7 circles are the values of the fan control knob corresponding to the maximum fan width of the spray gun of different types can be different for the spray gun of the type of the rock field LPH-101 used in the embodiment), namely the fan width of the spray gun is adjusted to be maximum;
(4) Spraying repair varnish on the painted surface of the second layer of repair varnish by using the spray gun for 3-15 times;
of course, in other embodiments, parameters of the lance may also be set to: (1) The pressure range value is 1.5-2.0bar, (2) the discharge amount control knob is rotated to 1.0-1.5 circles, and the spray gun is used for spraying repair varnish on the second layer repair varnish paint surface for 7-12 times;
step C13, curing the pre-repair matte varnish paint surface to obtain a repaired matte varnish paint surface, wherein heating equipment used in the curing action is a baking lamp, the temperature range of the baking lamp is set to be any value between 80 and 150 ℃, and a baking gun is used for baking the pre-repair matte varnish paint surface for at least 5 minutes and at most 60 minutes;
of course, in other embodiments, the temperature of the baking lamps may also be set to include, but not limited to, 100 ℃, 110 ℃, and 120 ℃, or any value between 100 ℃ and 120 ℃ and baking the pre-repair varnish paint for 8-15 minutes.
Embodiment four:
a repairing method of a vehicle matt paint comprises the following steps:
step S1, selecting a matte 'green fighter' vehicle body with a poor colored paint layer, polishing and flattening the defect part by using 2000# hand-operated abrasive paper, and wiping the polished ash clean to obtain a clean and flattened paint surface to be sprayed;
s2, painting paint on the surface to be painted, and uniformly spraying repair paint on the surface to be painted by using a spray gun in a reciprocating manner for 6 times until the repair paint covers the surface to be painted, so as to obtain a pre-repair color paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 1 circle; the colored paint is a repairing colored paint of 'fighter plane green';
s3, baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent, so as to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
s4, carrying out bright varnish spraying treatment on the surface-dried repair colored paint, and carrying out reciprocating 6 times of uniform spraying on the repair colored paint surface prepared in the first embodiment by using a spray gun, wherein the spraying thickness is about 40-50um, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
s5, baking the pre-repair varnish paint surface, namely back and forth baking the pre-repair varnish paint surface for 15 seconds at the position 6cm away from the paint surface at the temperature of 630 ℃ by using a manual baking gun to obtain a surface-dry repair varnish paint surface;
s6, spraying matte treatment on the surface-dried repair varnish paint surface, spraying the repair varnish on the surface-dried repair varnish paint surface repeatedly and uniformly for 10 times by using a spray gun, wherein the spraying process completely atomizes the varnish onto the repair varnish paint surface by controlling air pressure and fan amplitude, and the pre-repaired matte varnish paint surface is obtained by utilizing the atomization effect of the gloss varnish; wherein the pressure value of the spray gun is 1.5bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 6 circles;
step S7, baking the pre-repair matte varnish paint surface, namely baking the pre-repair matte varnish paint surface in a certain time by using a baking lamp, and drying to obtain the 'green fighter' matte varnish surface; wherein the baking temperature of the baking lamp is 120 ℃ and the baking time is 10min.
The paint finish of the vehicle after completion of this example is shown in fig. 4.
Fifth embodiment:
a repairing method of a vehicle matt paint comprises the following steps:
step S1, selecting an 'graphene ash' vehicle body with a poor colored paint layer, polishing and flattening the defect part by using 2000# hand-operated abrasive paper, and wiping the polished ash clean to obtain a clean and flattened paint surface to be sprayed;
s2, painting paint on the surface to be painted, and spraying the repair paint on the surface to be painted repeatedly and uniformly for 7 times by using a spray gun until the repair paint covers the surface to be painted, so as to obtain a pre-repair color paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 1 circle; the colored paint is an 'graphene ash' repair colored paint;
s3, baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent, so as to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
s4, carrying out bright varnish spraying treatment on the surface-dried repair colored paint, and carrying out reciprocating 6 times of uniform spraying on the repair colored paint surface prepared in the first embodiment by using a spray gun, wherein the spraying thickness is about 40-50um, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
s5, baking the pre-repair varnish paint surface, namely back and forth baking the pre-repair varnish paint surface for 15 seconds at the position 6cm away from the paint surface at the temperature of 630 ℃ by using a manual baking gun to obtain a surface-dry repair varnish paint surface;
s6, spraying matte treatment on the surface-dried repair varnish paint surface, spraying the repair varnish on the surface-dried repair varnish paint surface by using a spray gun repeatedly and uniformly for 9 times, wherein the spraying process completely atomizes the varnish onto the repair varnish paint surface by controlling air pressure and fan amplitude, and the pre-repaired matte varnish paint surface is obtained by utilizing the atomization effect of the gloss varnish; wherein the pressure value of the spray gun is 1.5bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 6 circles;
step S7, baking the pre-repair matte varnish paint surface, namely baking the pre-repair matte varnish paint surface in a certain time by using a baking lamp, and drying to obtain the green matte varnish paint surface of the fighter; wherein the baking temperature of the baking lamp is 120 ℃ and the baking time is 10min.
Example six:
a repairing method of a vehicle matt paint comprises the following steps:
step S1, selecting a 'matte gray' vehicle body with a poor colored paint layer, polishing and flattening the defect by using 2000# hand-operated abrasive paper, and wiping the polished gray to obtain a clean and flattened paint surface to be sprayed;
s2, painting paint on the surface to be painted, and uniformly spraying repair paint on the surface to be painted by using a spray gun in a reciprocating manner for 6 times until the repair paint covers the surface to be painted, so as to obtain a pre-repair color paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 1 circle; the colored paint is an 'graphene ash' repair colored paint;
s3, baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent, so as to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
s4, carrying out bright varnish spraying treatment on the surface-dried repair colored paint surface, and carrying out reciprocating 7 times of uniform spraying on the repair colored paint surface prepared in the first embodiment by using a spray gun, wherein the spraying thickness is about 40-50um, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
s5, baking the pre-repair varnish paint surface, namely back and forth baking the pre-repair varnish paint surface for 15 seconds at the position 6cm away from the paint surface at the temperature of 630 ℃ by using a manual baking gun to obtain a surface-dry repair varnish paint surface;
s6, spraying matte treatment on the surface-dried repair varnish paint surface, spraying the repair varnish on the surface-dried repair varnish paint surface by using a spray gun for 8 times, wherein the spraying process is to completely atomize the varnish onto the repair varnish paint surface by controlling air pressure and fan amplitude, and the pre-repair matte varnish paint surface is obtained by utilizing the atomization effect of the gloss varnish; wherein the pressure value of the spray gun is 1.5bar, the discharge amount control knob of the spray gun is rotated to 1 circle, and the fan width of the spray gun is adjusted to 6 circles;
step S7, baking the pre-repair matte varnish paint surface, namely baking the pre-repair matte varnish paint surface in a certain time by using a baking lamp, and drying to obtain the green matte varnish paint surface of the fighter; wherein the baking temperature of the baking lamp is 120 ℃ and the baking time is 10min.
Comparative example one:
(1) Selecting a matte 'green fighter' body with a poor colored paint layer, polishing and flattening the defect by using 2000# hand-operated abrasive paper, and wiping the polished ash clean to obtain a clean and flattened paint surface to be sprayed;
(2) Spraying the colored paint on the surface to be sprayed, and uniformly spraying the repair colored paint on the surface to be sprayed by using a spray gun in a reciprocating manner for 6 times until the repair colored paint covers the surface to be sprayed, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, the fan width of the spray gun is adjusted to 1 circle, and the colored paint is "fighter green" repair colored paint;
(3) Baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
(4) Spraying the matte varnish on the surface-dried repair colored paint, and uniformly spraying the matte varnish on the repair colored paint surface for 6 times by using a spray gun in a reciprocating way, wherein the spraying thickness is about 40-50um, and the spraying is finished to obtain the repair matte varnish paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
(5) Baking the repaired matte varnish paint surface, namely baking the repaired matte varnish paint surface by using a baking lamp at the temperature of 140 ℃ for 20min, and drying to obtain the 'fighter green' matte varnish surface.
The paint finish of the vehicle after completion of this comparative example is shown in fig. 5.
Control II:
(1) Selecting an 'graphene ash' vehicle body with a poor colored paint layer, polishing and flattening the defect part by using 2000# hand-operated abrasive paper, and wiping the polished ash clean to obtain a clean and flattened paint surface to be sprayed;
(2) Spraying the colored paint on the surface to be sprayed, and uniformly spraying the repair colored paint on the surface to be sprayed by using a spray gun in a reciprocating manner for 6 times until the repair colored paint covers the surface to be sprayed, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, the fan width of the spray gun is adjusted to 1 circle, and the colored paint is the repair colored paint of 'graphene ash';
(3) Baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
(4) Spraying the matte varnish on the surface-dried repair colored paint, and uniformly spraying the matte varnish on the repair colored paint surface for 6 times by using a spray gun in a reciprocating way, wherein the spraying thickness is about 40-50um, and the spraying is finished to obtain the repair matte varnish paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
(5) Baking the repaired matte varnish paint surface, namely baking the repaired matte varnish paint surface by using a baking lamp at the temperature of 140 ℃ for 20min, and drying to obtain the 'graphene ash' matte varnish surface.
Control three:
(1) Selecting a 'matte gray' vehicle body with a poor colored paint layer, polishing and flattening the defect part by using 2000# hand-operated abrasive paper, and wiping the polished gray clean to obtain a clean and flattened paint surface to be sprayed;
(2) Spraying the colored paint on the surface to be sprayed, and uniformly spraying the repair colored paint on the surface to be sprayed by using a spray gun in a reciprocating manner for 6 times until the repair colored paint covers the surface to be sprayed, so as to obtain a pre-repair colored paint surface; wherein the pressure value of the spray gun is 0.6bar, the discharge amount control knob of the spray gun is rotated to 1 circle, the fan width of the spray gun is adjusted to 1 circle, and the colored paint is bright moon gray repair colored paint;
(3) Baking the paint surface of the pre-repair color paint, namely baking the paint surface of the pre-repair color paint to volatilize a solvent to obtain the paint surface of the surface-dried repair color paint; wherein the baking temperature is 120 ℃, and the baking time is 3min;
(4) Spraying the matte varnish on the surface-dried repair colored paint, and uniformly spraying the matte varnish on the repair colored paint surface for 6 times by using a spray gun in a reciprocating way, wherein the spraying thickness is about 40-50um, and the spraying is finished to obtain the repair matte varnish paint surface; wherein the pressure value of the spray gun is 1bar, and the discharge amount control knob of the spray gun is rotated to 3 circles;
(5) And (3) baking the repaired matte varnish paint surface, namely baking the repaired matte varnish paint surface by using a baking lamp under the conditions that the temperature is 140 ℃ and the baking time is 20min, and drying to obtain the matte gray matte paint surface.
The repair results of the paint of the fourth, fifth, sixth and third examples are shown in the following table:
as can be seen from the above table, compared with the conventional repairing methods (i.e. comparative examples one to three), the repairing method disclosed by the invention has the advantages that the glossiness of the vehicle paint after repairing can reach the standard of the matt paint, and no color difference exists after repairing, and black marks or dark conditions often occur in the conventional repairing method. The repairing method disclosed by the invention can enable the glossiness and chromatic aberration of the final paint surface to be more similar to the quality of a matte varnish product, so that the product meets the requirement of going out.
In the specific content of the above embodiment, any combination of the technical features may be performed without contradiction, and for brevity of description, all possible combinations of the technical features are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The preparation method of the repair varnish is characterized by comprising the following steps of:
step A1, adding a varnish main agent for repairing into a container;
step A2, adding a varnish curing agent and a diluent into the container, and fully and uniformly stirring to obtain a pre-repair varnish, wherein the volume ratio of the varnish main agent to the varnish curing agent to the diluent is 1:0.3-1.5:0.5-2.0;
and A3, adding interface water into the pre-repair varnish obtained in the step A2, and fully and uniformly stirring to obtain the repair varnish, wherein the volume ratio of the pre-repair varnish to the interface water is 3:0.5-1.5.
2. The method for preparing a repair varnish according to claim 1, wherein the volume ratio of the varnish main agent, the varnish curing agent and the diluent is 1:0.6-0.8:1.0-1.4.
3. The method of claim 1, wherein the volume ratio of the pre-repair varnish to the interface water is 3:0.8-1.2.
4. The repairing method of the vehicle matt paint is characterized by comprising the following steps of:
step B1, polishing defective positions of the paint surfaces to form paint surfaces to be sprayed;
step B2, spraying the repair color paint on the surface to be painted formed in the step B1 repeatedly and uniformly until the repair color paint covers the surface to be painted, so as to obtain a pre-repair color paint surface;
step B3, curing the pre-repair color paint surface, and obtaining the repair color paint surface after curing;
step B4, uniformly spraying the repair varnish according to any one of claims 1-3 on the repair colored paint surface until the repair varnish covers the repair colored paint surface formed in the step B3, so as to obtain a pre-repair varnish paint surface;
step B5, curing the pre-repair varnish paint surface to obtain a repair varnish paint surface;
step B6, uniformly spraying the repair varnish on the repair varnish paint surface by using a spraying device, atomizing the repair varnish to the repair varnish paint surface by controlling the air pressure and the fan amplitude of the spraying device, and obtaining the pre-repair matte varnish paint surface by utilizing the atomization effect of the repair varnish;
and B7, curing the pre-repair matte varnish paint surface to obtain the repair matte varnish paint surface.
5. The method for repairing a matt paint for vehicles according to claim 4, wherein step B1 is performed by polishing with 800# 3000 grit sandpaper.
6. The repair method of the vehicle matt paint according to claim 4, characterized in that in step B2, the means for spraying repair paint is a spray gun having a pressure in the range of 0.5-1.5bar; spraying repeatedly by using a spray gun, wherein the range of the reciprocating times is 3-15 times; the width of the fan of the spray gun is adjusted to the minimum.
7. The method for repairing a vehicle matt paint according to claim 4, characterized in that in step B4, the means for spraying repair varnish is a spray gun having a pressure in the range of 0.5-2.0bar; spraying repeatedly by using a spray gun, wherein the range of the reciprocating times is 3-15 times.
8. The method for reworking a matted paint for vehicles according to claim 4, wherein in step B5, curing is performed in a manner of baking using a baking gun having a set temperature range value of 450 to 800 ℃ and a time range value of 5 to 60 seconds.
9. The method for repairing a vehicle matt paint according to claim 4, characterized in that in step B6, the means for spraying repair varnish is a spray gun having a pressure in the range of 0.5-2.0bar; spraying repeatedly by using a spray gun, wherein the range of the reciprocating times is 3-15 times; the width of the fan of the spray gun is adjusted to the maximum.
10. The method for reworking a matted paint for vehicles according to claim 4, wherein in step B7, curing is performed by baking using a baking lamp, wherein the baking lamp is set to a temperature range of 80 to 150 ℃ and the baking time range is set to a time range of 5 to 60 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311465567.1A CN117659869A (en) | 2023-11-06 | 2023-11-06 | Preparation method of repair varnish and repair method of vehicle matt paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311465567.1A CN117659869A (en) | 2023-11-06 | 2023-11-06 | Preparation method of repair varnish and repair method of vehicle matt paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117659869A true CN117659869A (en) | 2024-03-08 |
Family
ID=90079800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311465567.1A Pending CN117659869A (en) | 2023-11-06 | 2023-11-06 | Preparation method of repair varnish and repair method of vehicle matt paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117659869A (en) |
-
2023
- 2023-11-06 CN CN202311465567.1A patent/CN117659869A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110681556A (en) | Automobile mirror coating process | |
| CN113634470A (en) | Spraying method of paint layer on surface of automobile body | |
| CN114918120A (en) | Novel furniture coating process | |
| CN117659869A (en) | Preparation method of repair varnish and repair method of vehicle matt paint | |
| CN111816810B (en) | Flash sand process for composite board of mobile phone battery cover | |
| CN114226203A (en) | Coating method for silk effect of automobile body | |
| JP5183002B2 (en) | Metallic pigment composition, coating composition, ink composition, resin composition, rubber composition, and method for producing metallic pigment composition | |
| CN112588542A (en) | Method for high-transmittance coating of solid wood by using water-based paint | |
| CN112620048A (en) | 3D color coating method for automobile body | |
| CN115445881B (en) | Spraying method of automobile body paint film | |
| CN115318594A (en) | Spraying method for Zhanjia No. 7 | |
| JP4712630B2 (en) | Method for repairing multilayer coating film and article obtained therefrom | |
| CN113578716A (en) | Coating process of African rosewood water-based paint | |
| JP2001009364A (en) | Repairing method of metallic coating film | |
| JP2002248424A (en) | Method for repairing metallic composite coating film | |
| CN117427862A (en) | Matte color repairing method for automobile coating | |
| JPH06447A (en) | Method for repairing of color clear coating | |
| JP4540466B2 (en) | Repair painting method | |
| JP2005046718A (en) | Method for repairing film | |
| JP4079468B2 (en) | Metallic coating structure and method for forming metallic coating | |
| JP2001149862A (en) | Partial repairing method of metallic coating film | |
| JP3826803B2 (en) | How to repair the coating | |
| JP2002126638A (en) | Method for mending multilayer coating film, and automobile or automotive parts | |
| CN116833067A (en) | Optimized repair method for paint produced by whole vehicle | |
| JPH0824886B2 (en) | Car top coating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Country or region after: China Address after: No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Applicant after: Guangzhou Automobile Group Co.,Ltd. Address before: No. 633, Jinshan Avenue East Road, Guangzhou, Guangdong, Panyu District Applicant before: Guangzhou Automobile Passenger Car Co.,Ltd. Country or region before: China |
|
| CB02 | Change of applicant information |