CN105381942A - Car body coating method of novel nanometer pretreatment combining floating-coating-free water paint - Google Patents
Car body coating method of novel nanometer pretreatment combining floating-coating-free water paint Download PDFInfo
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- CN105381942A CN105381942A CN201510708497.7A CN201510708497A CN105381942A CN 105381942 A CN105381942 A CN 105381942A CN 201510708497 A CN201510708497 A CN 201510708497A CN 105381942 A CN105381942 A CN 105381942A
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- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
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- 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
- B05D3/007—After-treatment
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- 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
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- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/586—No clear coat specified each layer being cured, at least partially, separately
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
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- 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
- B05D2506/00—Halogenated polymers
- B05D2506/20—Chlorinated polymers
- B05D2506/25—PVC
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a car body coating method of novel nanometer pretreatment combining floating-coating-free water paint. The method includes the following steps of novel nanometer pretreatment, electrophoretic coating, electrophoretic drying, PVC sealant and stone-chip-resistant paint coating, PVC sealant pre-drying, floating-coating-free water colored paint spraying, water colored paint pre-drying, varnish spraying and finish paint drying. Compared with a traditional coating method of phosphorization pretreatment combining solvent type floating-coating finish paint, the car body coating method has the beneficial effects that the area of a factory and a production line are saved, a building period is shortened, environmental protection benefits are great, and the social benefits of low pollutant emission, energy conservation and consumption reduction are remarkable.
Description
Technical field
The invention belongs to coachbuilt body incrustation and guard technology field, particularly relate to a kind of novel nano pre-treatment and exempt from the supporting finishing of car body method of middle painting water paint.
Background technology
The traditional coating process of coachbuilt body is zinc, manganese, the pre-treatment of nickel ternary phosphatization with have the supporting coating process of middle painting solvent-borne type finish paint, technology maturation, excellent performance, to be widely used, but there is the problems such as the pollutant discharge amounts such as spent organic solvent (VOC), waste water, waste residue are large, energy consumption is high, technological process is long, application integrated cost is high, the novel nano pretreatment technology of Abroad in Recent Years auto vendor exploitation comprises zirconates pre-treatment, silane pre-treatment etc., the heavy metal pollution that phosphatization pre-treatment exists can be eliminated, reduce sewage generation and energy consumption; The a series of compact finish paint technology developed, comprise water-based 3C1B, exempt from middle painting water paint technology etc., possess significantly reduce VOC discharge, technological process is compact, save energy consumption, be conducive to reducing the advantages such as painting cost.Novel nano pre-treatment and compact finish paint complete sets of Techniques use, the maximization of environmental protection, energy saving profit can be realized, but based on these two kinds of new technologies feature separately, the each coating surface quality state of vehicle body controls difficulty, therefore adopt novel nano pre-treatment and the supporting application techniques of compact finish paint to carry out finishing of car body, be not reported both at home and abroad so far.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, a kind of novel nano pre-treatment is provided and exempts from the supporting finishing of car body method of middle painting water paint, arranged and monitoring by suitable technical process and equipment Design, reasonably technological parameter, control vehicle body at each operation coating surface quality state.
Technical scheme of the present invention is: a kind of novel nano pre-treatment with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis dries → be coated with PVC fluid sealant and middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry is exempted from stone-impact-proof paint → PVC glue preliminary drying → spraying;
Described novel nano pre-treating technology: comprise silane zirconates Combined Processing, described silane zirconates Combined Processing is: use silane zirconates complexing agent and deionized water to be made into tank liquor, entirely soak, processing time 150-240s, temperature 33-37 DEG C, pH value 4.4-4.9;
Middle painting water colour paint technique is exempted from described spraying: use aqueous functional colored paint B0 and water-based effect colored paint B1, and the first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 12-15 μm, then automatic coating thickness is the water-based effect colored paint B1 of 10-18 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 10-18 μm.
Preferably, described novel nano pre-treating technology process comprises: repeatedly Combined Processing → the continuation of washing → silane zirconates is repeatedly washed,
In described repeatedly washing, last washing uses deionized water entirely to soak, and processing time 60-150s, is washed till deionized water electrical conductivity≤300 μ s/cm;
Described continuation is last washing use deionized water spray in repeatedly washing, and processing time 30-90s, is washed till deionized water electrical conductivity≤30 μ s/cm.
Preferably, in described novel nano pre-treating technology process, silane zirconates composite treating agent and deionized water join in tank liquor: zirconium content 100-200mg/L, copper content 0.8-2.4mg/L, free fluorine content 30-45mg/L, silicone content 25-55mg/L, pH value 4.4-4.9.
Preferably, described electrophoresis coating technique process comprises: electrophoresis → repeatedly deionization washing;
Described electrophoresis is: entirely soak, solid part 19-22% in electrophoresis groove liquid, ash content 15-19%, electrical conductivity 1300-2000 μ s/cm, pH value 5.8-6.5;
In described repeatedly deionization washing, be washed till deionized water electrical conductivity < 5 μ s/cm for the last time.
Preferably, described electrophoresis dries employing two sections oven dry, and first paragraph bake out temperature 110-130 DEG C, time 2-4min, second segment bake out temperature is 165-195 DEG C, time 12-25min.
Preferably, described spraying is exempted from middle painting water colour paint technique: between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is greater than 4min;
Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 6-10 μm; Second station coating thickness 4-8 μm.
Preferably, described water paint preliminary drying technique is crossed and is called: heating → insulation → cooling,
Described heating process time 3-4min, car body temperature 30-50 DEG C;
Described heat preservation method time 3-4min, car body temperature 60-65 DEG C;
Described process for cooling time 2-3min, car body temperature 30-35 DEG C.
Preferably, described lacquer varnish technique is crossed and is called: vehicle body inner surface hand spray thickness is after the varnish of 35-40 μm, then is the varnish of 40-45 μm at vehicle body outside surface automatic coating thickness.
Preferably, described finish paint stoving process is: bake out temperature 140-150 DEG C, drying time 20-25min.
Further, the sheet material that vehicle body uses comprises heat zinc coating plate and cold-reduced sheet, and on the heat zinc coating plate of described novel nano pre-treatment rear, in gained conversion film, zirconium content is 80-180mg/m
2, vehicle body cold-reduced sheet in gained conversion film zirconium content be 30-100mg/m
2.
The original electrical conductivity < 5 μ s/cm of the deionized water used in the present invention.
In the present invention, silane zirconates composite treating agent uses Oxsilan9831 silane zirconates composite treating agent, and Oxsilan9831 is Kai Miteer chemical company silane treatment product.
After in the present invention, vehicle body outside surface refers to that the opening tools such as car door, luggage-boot lid, engine engine lid are closed, vehicle body visible part; After vehicle body inner surface refers to open above-mentioned opening tool, the interior zones such as opening tool inside and engine bin, storage room, body sill, doorframe.
Beneficial effect of the present invention is:
1. zinc-nickel manganese ternary phosphorizing liquid causes in the waste water produced containing the harmful heavy metal such as nickel ion, manganese ion, the present invention uses novel nano pretreatment technology, use the non-phosphatic type reagent not containing nickel, manganese heavy metal, on vehicle body, form fine and close nanometer scale ceramics conversion film while of environment amenable, increase metal corrosion-resistant ability and paint adhesion.And the phosphating coat that in prior art, the pre-treatment of ternary phosphatization obtains is about 1-2 μm, after novel nano pre-treatment, gained conversion film thickness is about 0.1 μm, an order of magnitude less of thickness before.
2. develop novel nano pre-treatment and exempt from the supporting finishing of car body method of middle painting water paint, traditional solvent-borne type has middle lacker finish to comprise: middle painting is sprayed paint, middle painting is dried, middle painting polishing, follow-up dedusting, save middle painting technique in the present invention completely, save production equipment, factory building, artificial etc.Compare phosphatization pre-treatment and solvent-borne type has the supporting traditional coating process of middle painting finish paint, coating process plant area of the present invention reduces 9200m
2(saving the plant area of 1/4), production line reduces investment outlay about 5,000 ten thousand yuans, and the construction period shortens 1/5.
3. the vehicle body outward appearance level obtained, performance reach traditional coating process level, in traditional solvent-type paint, solvent is up to 80%, the water colour paint organic solvent used in the present invention is only 10%, therefore, in whole technique, (VOC) discharges minimizing 60%, discharge of wastewater declines 28%, heavy metal waste slag zero-emission, energy resource consumption declines 26%, bicycle application integrated cost declines 13%, and overall environmental protection energy-saving effect is better than single use novel nano pretreatment technology or exempts from middle painting water paint technology.
4. environmental protection income of the present invention is very big, has the discharge of significant low stain thing, energy-saving and cost-reducing social benefit.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart
Detailed description of the invention
Embodiment 1
As shown in Figure 1, novel nano pre-treatment of the present invention with exempt from the supporting finishing of car body method of middle painting water paint, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis is dried → is coated with PVC fluid sealant and stone-impact-proof paint → PVC glue preliminary drying → spraying and exempts from middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry.
Novel nano pre-treating technology: de-2 → washing, the 1 → washing of degreasing 1 → fat 2 → washing 3 → silane zirconates Combined Processing → washing 4 → washing 5 → washing 6,
Degreasing 1 is: spray, and the processing time is 150s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 1, wherein free alkali 6.0-15.0pt, pH value 10-11.5;
Degreasing 2 is: entirely soak, and the processing time is 250s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 2, wherein free alkali 9.0-20.0pt, pH value 10-11.5;
Washing 1 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 7-11.8, electrical conductivity≤3000 μ s/cm;
Washing 2 is: industry water soaks entirely, processing time 120s, room temperature, and industrial washing, to pH value 6-9.5, is washed till electrical conductivity≤1000 μ s/cm;
Washing 3 is: deionized water is soaked entirely, room temperature, processing time 60-150s (preferred 120s), and deionized water is washed till pH value 6.5-8.9, is washed till electrical conductivity≤300 μ s/cm;
Silane zirconates Combined Processing: use Kai Miteer chemical company product Oxsilan9831 as silane zirconates composite treating agent, tank liquor is made into deionized water, full leaching, processing time 150-240s, temperature 33-37 DEG C of (preferably 90s, 34 DEG C), in tank liquor: zirconium content 100-200mg/L, copper content 0.8-2.4mg/L, free fluorine content 30-45mg/L, silicone content 25-55mg/L, pH value 4.4-4.9, electrical conductivity <4000 μ s/cm, (preferred zirconium content 120mg/L, copper content 1mg/L, free fluorine content 32mg/L, silicone content 30mg/L, pH value 4.8),
Washing 4 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 6.5-9, electrical conductivity≤400 μ s/cm;
Washing 5 is: deionized water is soaked entirely, processing time 120s, room temperature, and deionized water is washed till pH value 5.5-8, electrical conductivity≤50 μ s/cm;
Washing 6 is: deionized water sprays, and processing time 30-90s (preferred 50s), room temperature, deionized water is washed till electrical conductivity≤30 μ s/cm.
Pre-treatment is examined in the treated conversion film of vehicle body eventually, and hot-dip galvanizing sheet steel zirconium content is 80-180mg/m
2(preferred 120mg/m
2), cold-reduced sheet zirconium content is 30-100mg/m
2(preferred 50mg/m
2).
Above-mentioned degreasing 1, degreasing 2 all use GardocleanS5176 and GardobondAdditiveH7419 degreasing agent; GardocleanS5176 and GardobondAdditiveH7419 is the Treatment of Metal Surface additive that German Gardobond company produces.The pH value 6.8-7.5 of the industry water used, electrical conductivity 300-400 μ s/cm.
Electrophoretic painting: → deionization washing 1 → deionization washing 2 is washed in electrophoresis → ultrafiltration,
Electrophoresis: processing mode is full leaching, material is POWERNICS1421F-2 resin and POWERNICS1421F-1 graining paste (being Japanese ippon Products), time 210-230s, temperature 28-32 DEG C of (preferred 210s, 30 DEG C), join to obtain electrophoresis groove liquid: solid part 19-22% (mass fraction), ash content 15-19% (mass fraction), electrical conductivity 1300-2000 μ s/cm, pH value 5.8-6.5, MEQ acid number 20-28meq, solvent 0.8-1.8% (mass fraction), (preferred solid part 20%, ash content 18%, electrical conductivity 1500 μ s/cm, pH value 6, MEQ acid number 24meq, solvent 1%) electrophoretic voltage employing two-period form, electrophoresis one section of voltage 230V, two sections of voltage 260V.Vehicle body outside surface electrophoretic paint thickness 18-24 μm (preferably 20 μm).
Ultrafiltration is washed: use ultrafiltrate in electrophoresis tank to rinse, be washed till solid part < 0.1% in ultrafiltrate.
Deionization washing 1: be washed till deionized water electrical conductivity < 50 μ s/cm, solid part < 0.1%.
Deionization washing 2: be washed till deionized water electrical conductivity < 5 μ s/cm, pH value 5.5-7.0.
For eliminating electrophoresis striped, electrophoresis tank entrance is equipped with deionized water spraying, ensures that vehicle body is entirely wet and enters electrophoresis tank; For reducing horizontal plane electrophoretic particles, between ultrafiltration washes 2 and ultrafiltration washes 3, electrophoretic particles is equipped with to wet sander; Wide-angle water logging rolling bed is equipped with for reducing electrophoretic paint knurl, after fresh deionized water is washed, before entering drying oven.
Electrophoresis is dried: adopt two-period form to dry, first paragraph bake out temperature 110-130 DEG C, time 2-4min (preferably 115 DEG C, 3min); Second segment bake out temperature 165-195 DEG C, time 12-25min (preferably 190 DEG C, 15min).
Be coated with PVC fluid sealant and stone-impact-proof paint: the material of use is TEROLAN8540CN fluid sealant (Henkel Corp.'s product), BETAGVARDDC2010/13 stone-impact-proof paint (U.S.'s Essex Products), fluid sealant is squeezing and coating constructions, stone-impact-proof paint is spraying application, stone-impact-proof paint coating thickness 500-600 μm (preferably 550 μm).
PVC glue preliminary drying: bake out temperature 140-160 DEG C, drying time 10-15min (preferably 150 DEG C, 10min).
Middle painting water colour paint is exempted from spraying: use aqueous functional colored paint B0 (white, light grey, in Dark grey any one, be white in the present embodiment) and water-based effect colored paint B1 (the plain color colored paint of shades of colour or metal flash paint, as: white colored paint, BOKDEAUX metal flash paint, shark ash metal flash paint, amber palm fibre metallic paint, the brilliant Summoning paint of carbon, be white colored paint in the present embodiment), the first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 12-15 μm (preferably 13 μm), automatic coating thickness is the water-based effect colored paint B1 of 10-18 μm (preferably 13 μm) again, vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 10-18 μm (preferably 13 μm).The spraying of vehicle body outside surface and inner surface is independent, there is no sequencing to limit, but because existing technique outer lower face surface automatic coating B0 can cause part to spray to inner surface, the B0 therefore having sprayed outer surface adopts hand spray inner surface B1, then automatic coating outer surface B1.
Between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is greater than 4min; Outer surface automatic coating B0 automatic coating flow 550cc/min, high pressure 80KV, rotating speed 50kt/min; Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 6-10 μm (preferably 7 μm), first stop flow 450cc/min, high pressure 70KV, rotating speed 50kt/min; Second station coating thickness 4-8 μm (preferably 6 μm), second station flow 250cc/min, high pressure 70KV, rotating speed 55kt/min.
Water colour paint preliminary drying: heating → insulation → cooling,
Described heating process time 3-4min, car body temperature 30-50 DEG C (preferred 3min, 40 DEG C);
Described heat preservation method time 3-4min, car body temperature 60-65 DEG C (preferred 3min, 60 DEG C);
Described process for cooling time 2-3min, car body temperature 30-35 DEG C (preferred 2min, 30 DEG C).
Lacquer varnish: vehicle body inner surface hand spray thickness is after the varnish of 35-40 μm (preferably 35 μm), be the varnish of 40-45 μm (preferably 40 μm) again at vehicle body outside surface automatic coating thickness, the material used is two component solvent-based varnishes, varnish automatic coating flow 550cc/min, high pressure 80KV.
Finish paint is dried: bake out temperature 140-150 DEG C, drying time 20-25min (preferably 150 DEG C, 20min).
Embodiment 2
As shown in Figure 1, novel nano pre-treatment of the present invention with exempt from the supporting finishing of car body method of middle painting water paint, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis is dried → is coated with PVC fluid sealant and stone-impact-proof paint → PVC glue preliminary drying → spraying and exempts from middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry.
Novel nano pre-treating technology: de-2 → washing, the 1 → washing of degreasing 1 → fat 2 → washing 3 → silane zirconates Combined Processing → washing 4 → washing 5 → washing 6,
Degreasing 1 is: spray, and the processing time is 150s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 1, wherein free alkali 6.0-15.0pt, pH value 10-11.5;
Degreasing 2 is: entirely soak, and the processing time is 250s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 2, wherein free alkali 9.0-20.0pt, pH value 10-11.5;
Washing 1 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 7-11.8, electrical conductivity≤3000 μ s/cm;
Washing 2 is: industry water soaks entirely, processing time 120s, room temperature, and industrial washing, to pH value 6-9.5, is washed till electrical conductivity≤1000 μ s/cm;
Washing 3 is: deionized water is soaked entirely, room temperature, processing time 60s, and deionized water is washed till pH value 6.5-8.9, is washed till electrical conductivity≤300 μ s/cm;
Silane zirconates Combined Processing: use Kai Miteer chemical company product Oxsilan9831 as silane zirconates composite treating agent, tank liquor is made into deionized water, full leaching, processing time 150s, temperature 33 DEG C, in tank liquor: zirconium content 100mg/L, copper content 0.8mg/L, free fluorine content 30mg/L, silicone content 25mg/L, pH value 4.4, electrical conductivity <4000 μ s/cm;
Washing 4 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 6.5-9, electrical conductivity≤400 μ s/cm;
Washing 5 is: deionized water is soaked entirely, processing time 120s, room temperature, and deionized water is washed till pH value 5.5-8, electrical conductivity≤50 μ s/cm;
Washing 6 is: deionized water sprays, and processing time 30s, room temperature, deionized water is washed till electrical conductivity≤30 μ s/cm.
Pre-treatment is examined in the treated conversion film of vehicle body eventually, and hot-dip galvanizing sheet steel zirconium content is 80mg/m
2, cold-reduced sheet zirconium content is 30mg/m
2.
Above-mentioned degreasing 1, degreasing 2 all use GardocleanS5176 and GardobondAdditiveH7419 degreasing agent; GardocleanS5176 and GardobondAdditiveH7419 is the Treatment of Metal Surface additive that German Gardobond company produces.The pH value 6.8-7.5 of the industry water used, electrical conductivity 300-400 μ s/cm.
Electrophoretic painting: → deionization washing 1 → deionization washing 2 is washed in electrophoresis → ultrafiltration,
Electrophoresis: processing mode is full leaching, and material is POWERNICS1421F-2 resin and POWERNICS1421F-1 graining paste (being Japanese ippon Products), time 210s, temperature 28 DEG C, join to obtain electrophoresis groove liquid: solid part 19% (mass fraction), ash content 15% (mass fraction), electrical conductivity 1300 μ s/cm, pH value 5.8, MEQ acid number 20meq, solvent 0.8%, electrophoretic voltage adopts two-period form, electrophoresis one section of voltage 230V, two sections of voltage 260V.Vehicle body outside surface electrophoretic paint thickness 18 μm.
Ultrafiltration is washed: use ultrafiltrate in electrophoresis tank to rinse, be washed till solid part < 0.1% in ultrafiltrate.
Deionization washing 1: be washed till deionized water washing lotion electrical conductivity < 50 μ s/cm, solid part < 0.1%.
Deionization washing 2: be washed till deionized water electrical conductivity < 5 μ s/cm, pH value 5.5-7.0.
For eliminating electrophoresis striped, electrophoresis tank entrance is equipped with deionized water spraying, ensures that vehicle body is entirely wet and enters electrophoresis tank; For reducing horizontal plane electrophoretic particles, between ultrafiltration washes 2 and ultrafiltration washes 3, electrophoretic particles is equipped with to wet sander; Wide-angle water logging rolling bed is equipped with for reducing electrophoretic paint knurl, after fresh deionized water is washed, before entering drying oven.
Electrophoresis is dried: adopt two-period form to dry, first paragraph bake out temperature 110 DEG C, time 2min; Second segment bake out temperature 165 DEG C, time 12min.
Be coated with PVC fluid sealant and stone-impact-proof paint: the material of use is TEROLAN8540CN fluid sealant (Henkel Corp.'s product), BETAGVARDDC2010/13 stone-impact-proof paint, fluid sealant is squeezing and coating constructions, stone-impact-proof paint is spraying application, stone-impact-proof paint coating thickness 500 μm.
PVC glue preliminary drying: bake out temperature 140 DEG C, drying time 10min.
Middle painting water colour paint is exempted from spraying: use aqueous functional colored paint B0 (in white, light grey, Dark grey any one, be light grey in the present embodiment) and water-based effect colored paint B1 (the plain color colored paint of shades of colour or metal flash paint, as: white colored paint, BOKDEAUX metal flash paint, shark ash metal flash paint, amber palm fibre metallic paint, carbon brilliant Summoning paint are BOKDEAUX metal flash paint in the present embodiment).The first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 12 μm, then automatic coating thickness is the water-based effect colored paint B1 of 10 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 10 μm.The spraying of vehicle body outside surface and inner surface is independent, there is no sequencing to limit, but because existing technique outer lower face surface automatic coating B0 can cause part to spray to inner surface, the B0 therefore having sprayed outer surface adopts hand spray inner surface B1, then automatic coating outer surface B1.
Between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is 5min; Outer surface automatic coating B0 automatic coating flow 550cc/min, high pressure 80KV, rotating speed 50kt/min; Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 6 μm, first stop flow 450cc/min, high pressure 70KV, rotating speed 50kt/min; Second station coating thickness 4 μm, second station flow 250cc/min, high pressure 70KV, rotating speed 55kt/min.
Water colour paint preliminary drying: heating → insulation → cooling,
Described heating process time 3min, car body temperature 30 DEG C;
Described heat preservation method time 3min, car body temperature 60 C;
Described process for cooling time 2min, car body temperature 30 DEG C.
Lacquer varnish: vehicle body inner surface hand spray thickness is after the varnish of 35 μm, then be the varnish of 40 μm at vehicle body outside surface automatic coating thickness, the material of use is two component solvent-based varnishes, varnish automatic coating flow 550cc/min, high pressure 80KV.
Finish paint is dried: bake out temperature 140 DEG C, drying time 20min.
Embodiment 3
As shown in Figure 1, novel nano pre-treatment of the present invention with exempt from the supporting finishing of car body method of middle painting water paint, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis is dried → is coated with PVC fluid sealant and stone-impact-proof paint → PVC glue preliminary drying → spraying and exempts from middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry.
Novel nano pre-treating technology: de-2 → washing, the 1 → washing of degreasing 1 → fat 2 → washing 3 → silane zirconates Combined Processing → washing 4 → washing 5 → washing 6,
Degreasing 1 is: spray, and the processing time is 150s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 1, wherein free alkali 6.0-15.0pt, pH value 10-11.5;
Degreasing 2 is: entirely soak, and the processing time is 250s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 2, wherein free alkali 9.0-20.0pt, pH value 10-11.5;
Washing 1 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 7-11.8, electrical conductivity≤3000 μ s/cm;
Washing 2 is: industry water soaks entirely, processing time 120s, room temperature, and industrial washing, to pH value 6-9.5, is washed till electrical conductivity≤1000 μ s/cm;
Washing 3 is: deionized water is soaked entirely, room temperature, processing time 150s, and deionized water is washed till pH value 6.5-8.9, is washed till electrical conductivity≤300 μ s/cm;
Silane zirconates Combined Processing: use Kai Miteer chemical company product Oxsilan9831 as silane zirconates composite treating agent, tank liquor is made into deionized water, full leaching, processing time 240s, temperature 37 DEG C, in tank liquor: zirconium content 200mg/L, copper content 2.4mg/L, free fluorine content 45mg/L, silicone content 55mg/L, pH value 4.9, electrical conductivity <4000 μ s/cm;
Washing 4 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 6.5-9, electrical conductivity≤400 μ s/cm;
Washing 5 is: deionized water is soaked entirely, processing time 120s, room temperature, and deionized water is washed till pH value 8, electrical conductivity≤50 μ s/cm;
Washing 6 is: deionized water sprays, and processing time 90s, room temperature, deionized water is washed till electrical conductivity≤30 μ s/cm.
Pre-treatment is examined in the treated conversion film of vehicle body eventually, and hot-dip galvanizing sheet steel zirconium content is 180mg/m
2, cold-reduced sheet zirconium content is 100mg/m
2.
Above-mentioned degreasing 1, degreasing 2 all use GardocleanS5176 and GardobondAdditiveH7419 degreasing agent; GardocleanS5176 and GardobondAdditiveH7419 is the Treatment of Metal Surface additive that German Gardobond company produces.The pH value 6.8-7.5 of the industry water used, electrical conductivity 300-400 μ s/cm.
Electrophoretic painting: → deionization washing 1 → deionization washing 2 is washed in electrophoresis → ultrafiltration,
Electrophoresis: processing mode is full leaching, and material is POWERNICS1421F-2 resin and POWERNICS1421F-1 graining paste (being Japanese ippon Products), time 230s, temperature 32 DEG C, join to obtain electrophoresis groove liquid: solid part 22% (mass fraction), ash content 19% (mass fraction), electrical conductivity 2000 μ s/cm, pH value 6.5, MEQ acid number 28meq, solvent 1.8%, electrophoretic voltage adopts two-period form, electrophoresis one section of voltage 230V, two sections of voltage 260V.Vehicle body outside surface electrophoretic paint thickness 24 μm.
Ultrafiltration is washed: use ultrafiltrate in electrophoresis tank to rinse, be washed till solid part < 0.1% in ultrafiltrate.
Deionization washing 1: be washed till deionized water washing lotion electrical conductivity < 50 μ s/cm, solid part < 0.1%.
Deionization washing 2: be washed till deionized water electrical conductivity < 5 μ s/cm, pH value 5.5-7.0.
For eliminating electrophoresis striped, electrophoresis tank entrance is equipped with deionized water spraying, ensures that vehicle body is entirely wet and enters electrophoresis tank; For reducing horizontal plane electrophoretic particles, between ultrafiltration washes 2 and ultrafiltration washes 3, electrophoretic particles is equipped with to wet sander; Wide-angle water logging rolling bed is equipped with for reducing electrophoretic paint knurl, after fresh deionized water is washed, before entering drying oven.
Electrophoresis is dried: adopt two-period form to dry, first paragraph bake out temperature 130 DEG C, time 4min; Second segment bake out temperature 195 DEG C, time 25min.
Be coated with PVC fluid sealant and stone-impact-proof paint: the material of use is TEROLAN8540CN fluid sealant (Henkel Corp.'s product), BETAGVARDDC2010/13 stone-impact-proof paint, fluid sealant is squeezing and coating constructions, stone-impact-proof paint is spraying application, stone-impact-proof paint coating thickness 600 μm.
PVC glue preliminary drying: bake out temperature 160 DEG C, drying time 15min.
Middle painting water colour paint is exempted from spraying: use aqueous functional colored paint B0 (in white, light grey, Dark grey any one, be light grey in the present embodiment) and water-based effect colored paint B1 (the plain color colored paint of shades of colour or metal flash paint, as: white colored paint, BOKDEAUX metal flash paint, shark ash metal flash paint, amber palm fibre metallic paint, carbon brilliant Summoning paint are shark ash metal flash paint in the present embodiment).The first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 15 μm, then automatic coating thickness is the water-based effect colored paint B1 of 18 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 18 μm.The spraying of vehicle body outside surface and inner surface is independent, there is no sequencing to limit, but because existing technique outer lower face surface automatic coating B0 can cause part to spray to inner surface, the B0 therefore having sprayed outer surface adopts hand spray inner surface B1, then automatic coating outer surface B1.
Between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is 6min; Outer surface automatic coating B0 automatic coating flow 550cc/min, high pressure 80KV, rotating speed 50kt/min; Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 10 μm, first stop flow 450cc/min, high pressure 70KV, rotating speed 50kt/min; Second station coating thickness 8 μm, second station flow 250cc/min, high pressure 70KV, rotating speed 55kt/min.
Water colour paint preliminary drying: heating → insulation → cooling,
Described heating process time 4min, car body temperature 50 C;
Described heat preservation method time 4min, car body temperature 65 DEG C;
Described process for cooling time 3min, car body temperature 35 DEG C.
Lacquer varnish: vehicle body inner surface hand spray thickness is after the varnish of 40 μm, then be the varnish of 45 μm at vehicle body outside surface automatic coating thickness, the material of use is two component solvent-based varnishes, varnish automatic coating flow 550cc/min, high pressure 80KV.
Finish paint is dried: bake out temperature 150 DEG C, drying time 25min.
Embodiment 4
As shown in Figure 1, novel nano pre-treatment of the present invention with exempt from the supporting finishing of car body method of middle painting water paint, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis is dried → is coated with PVC fluid sealant and stone-impact-proof paint → PVC glue preliminary drying → spraying and exempts from middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry.
Novel nano pre-treating technology: de-2 → washing, the 1 → washing of degreasing 1 → fat 2 → washing 3 → silane zirconates Combined Processing → washing 4 → washing 5 → washing 6,
Degreasing 1 is: spray, and the processing time is 150s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 1, wherein free alkali 6.0-15.0pt, pH value 10-11.5;
Degreasing 2 is: entirely soak, and the processing time is 250s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 2, wherein free alkali 9.0-20.0pt, pH value 10-11.5;
Washing 1 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 7-11.8, electrical conductivity≤3000 μ s/cm;
Washing 2 is: industry water soaks entirely, processing time 120s, room temperature, and industrial washing, to pH value 6-9.5, is washed till electrical conductivity≤1000 μ s/cm;
Washing 3 is: deionized water is soaked entirely, room temperature, processing time 90s, and deionized water is washed till pH value 6.5-8.9, is washed till electrical conductivity≤300 μ s/cm;
Silane zirconates Combined Processing: use Kai Miteer chemical company product Oxsilan9831 as silane zirconates composite treating agent, tank liquor is made into deionized water, full leaching, processing time 200s, temperature 35 DEG C, in tank liquor: zirconium content 150mg/L, copper content 1.6mg/L, free fluorine content 36mg/L, silicone content 40mg/L, pH value 4.6, electrical conductivity <4000 μ s/cm;
Washing 4 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 6.5-9, electrical conductivity≤400 μ s/cm;
Washing 5 is: deionized water is soaked entirely, processing time 120s, room temperature, and deionized water is washed till pH value 5.5-8, electrical conductivity≤50 μ s/cm;
Washing 6 is: deionized water sprays, and processing time 60s, room temperature, deionized water is washed till electrical conductivity≤30 μ s/cm.
Pre-treatment is examined in the treated conversion film of vehicle body eventually, and hot-dip galvanizing sheet steel zirconium content is 130mg/m
2, cold-reduced sheet zirconium content is 65mg/m
2.
Above-mentioned degreasing 1, degreasing 2 all use GardocleanS5176 and GardobondAdditiveH7419 degreasing agent; GardocleanS5176 and GardobondAdditiveH7419 is the Treatment of Metal Surface additive that German Gardobond company produces.The pH value 6.8-7.5 of the industry water used, electrical conductivity 300-400 μ s/cm.
Electrophoretic painting: → deionization washing 1 → deionization washing 2 is washed in electrophoresis → ultrafiltration,
Electrophoresis: processing mode is full leaching, and material is POWERNICS1421F-2 resin and POWERNICS1421F-1 graining paste (being Japanese ippon Products), time 220s, temperature 30 DEG C, join to obtain electrophoresis groove liquid: solid part 20% (mass fraction), ash content 17% (mass fraction), electrical conductivity 1600 μ s/cm, pH value 6.1, MEQ acid number 25meq, solvent 1.5%, electrophoretic voltage adopts two-period form, electrophoresis one section of voltage 230V, two sections of voltage 260V.Vehicle body outside surface electrophoretic paint thickness 21 μm.
Ultrafiltration is washed: use ultrafiltrate in electrophoresis tank to rinse, be washed till solid part < 0.1% in ultrafiltrate.
Deionization washing 1: be washed till deionized water washing lotion electrical conductivity < 50 μ s/cm, solid part < 0.1%.
Deionization washing 2: be washed till deionized water electrical conductivity < 5 μ s/cm, pH value 5.5-7.0.
For eliminating electrophoresis striped, electrophoresis tank entrance is equipped with deionized water spraying, ensures that vehicle body is entirely wet and enters electrophoresis tank; For reducing horizontal plane electrophoretic particles, between ultrafiltration washes 2 and ultrafiltration washes 3, electrophoretic particles is equipped with to wet sander; Wide-angle water logging rolling bed is equipped with for reducing electrophoretic paint knurl, after fresh deionized water is washed, before entering drying oven.
Electrophoresis is dried: adopt two-period form to dry, first paragraph bake out temperature 120 DEG C, time 3min; Second segment bake out temperature 180 DEG C, time 18min.
Be coated with PVC fluid sealant and stone-impact-proof paint: the material of use is TEROLAN8540CN fluid sealant (Henkel Corp.'s product), BETAGVARDDC2010/13 stone-impact-proof paint, fluid sealant is squeezing and coating constructions, stone-impact-proof paint is spraying application, stone-impact-proof paint coating thickness 550 μm.
PVC glue preliminary drying: bake out temperature 150 DEG C, drying time 12min.
Middle painting water colour paint is exempted from spraying: use aqueous functional colored paint B0 (in white, light grey, Dark grey any one, be Dark grey in the present embodiment) and water-based effect colored paint B1 (the plain color colored paint of shades of colour or metal flash paint, as: white colored paint, BOKDEAUX metal flash paint, shark ash metal flash paint, amber palm fibre metallic paint, carbon brilliant Summoning paint are amber palm fibre metallic paint in the present embodiment).The first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 13 μm, then automatic coating thickness is the water-based effect colored paint B1 of 14 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 14 μm.The spraying of vehicle body outside surface and inner surface is independent, there is no sequencing to limit, but because existing technique outer lower face surface automatic coating B0 can cause part to spray to inner surface, the B0 therefore having sprayed outer surface adopts hand spray inner surface B1, then automatic coating outer surface B1.
Between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is 7min; Outer surface automatic coating B0 automatic coating flow 550cc/min, high pressure 80KV, rotating speed 50kt/min; Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 8 μm, first stop flow 450cc/min, high pressure 70KV, rotating speed 50kt/min; Second station coating thickness 6 μm, second station flow 250cc/min, high pressure 70KV, rotating speed 55kt/min.
Water colour paint preliminary drying: heating → insulation → cooling,
Described heating process time 3.5min, car body temperature 40 DEG C;
Described heat preservation method time 3.5min, car body temperature 62 DEG C;
Described process for cooling time 2.5min, car body temperature 32 DEG C.
Lacquer varnish: vehicle body inner surface hand spray thickness is after the varnish of 38 μm, then be the varnish of 42 μm at vehicle body outside surface automatic coating thickness, the material of use is two component solvent-based varnishes, varnish automatic coating flow 550cc/min, high pressure 80KV.
Finish paint is dried: bake out temperature 145 DEG C, drying time 22min.
Embodiment 5
As shown in Figure 1, novel nano pre-treatment of the present invention with exempt from the supporting finishing of car body method of middle painting water paint, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis is dried → is coated with PVC fluid sealant and stone-impact-proof paint → PVC glue preliminary drying → spraying and exempts from middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry.
Novel nano pre-treating technology: de-2 → washing, the 1 → washing of degreasing 1 → fat 2 → washing 3 → silane zirconates Combined Processing → washing 4 → washing 5 → washing 6,
Degreasing 1 is: spray, and the processing time is 150s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 1, wherein free alkali 6.0-15.0pt, pH value 10-11.5;
Degreasing 2 is: entirely soak, and the processing time is 250s, temperature 55-59 DEG C, uses GardocleanS5176 and GardobondAdditiveH7419 degreasing agent and deionized water to join to obtain degreaser 2, wherein free alkali 9.0-20.0pt, pH value 10-11.5;
Washing 1 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 7-11.8, electrical conductivity≤3000 μ s/cm;
Washing 2 is: industry water soaks entirely, processing time 120s, room temperature, and industrial washing, to pH value 6-9.5, is washed till electrical conductivity≤1000 μ s/cm;
Washing 3 is: deionized water is soaked entirely, room temperature, processing time 120s, and deionized water is washed till pH value 6.5-8.9, is washed till electrical conductivity≤300 μ s/cm;
Silane zirconates Combined Processing: use Kai Miteer chemical company product Oxsilan9831 as silane zirconates composite treating agent, tank liquor is made into deionized water, full leaching, processing time 200s, temperature 36 DEG C, in tank liquor: zirconium content 180mg/L, copper content 2mg/L, free fluorine content 40mg/L, silicone content 50mg/L, pH value 4.8, electrical conductivity <4000 μ s/cm;
Washing 4 is: industry water sprays, processing time 50s, room temperature, industrial washing to pH value 6.5-9, electrical conductivity≤400 μ s/cm;
Washing 5 is: deionized water is soaked entirely, processing time 120s, room temperature, and deionized water is washed till pH value 5.5-8, electrical conductivity≤50 μ s/cm;
Washing 6 is: deionized water sprays, and processing time 80s, room temperature, deionized water is washed till electrical conductivity≤30 μ s/cm.
Pre-treatment is examined in the treated conversion film of vehicle body eventually, and hot-dip galvanizing sheet steel zirconium content is 160mg/m
2, cold-reduced sheet zirconium content is 80mg/m
2.
Above-mentioned degreasing 1, degreasing 2 all use GardocleanS5176 and GardobondAdditiveH7419 degreasing agent; GardocleanS5176 and GardobondAdditiveH7419 is the Treatment of Metal Surface additive that German Gardobond company produces.The pH value 6.8-7.5 of the industry water used, electrical conductivity 300-400 μ s/cm.
Electrophoretic painting: → deionization washing 1 → deionization washing 2 is washed in electrophoresis → ultrafiltration,
Electrophoresis: processing mode is full leaching, and material is POWERNICS1421F-2 resin and POWERNICS1421F-1 graining paste (being Japanese ippon Products), time 225s, temperature 31 DEG C, join to obtain electrophoresis groove liquid: solid part 21% (mass fraction), ash content 18% (mass fraction), electrical conductivity 1800 μ s/cm, pH value 6, MEQ acid number 26meq, solvent 1.5%, electrophoretic voltage adopts two-period form, electrophoresis one section of voltage 230V, two sections of voltage 260V.Vehicle body outside surface electrophoretic paint thickness 22 μm.
Ultrafiltration is washed: use ultrafiltrate in electrophoresis tank to rinse, be washed till solid part < 0.1% in ultrafiltrate.
Deionization washing 1: be washed till deionized water washing lotion electrical conductivity < 50 μ s/cm, solid part < 0.1%.
Deionization washing 2: be washed till deionized water electrical conductivity < 5 μ s/cm, pH value 5.5-7.0.
For eliminating electrophoresis striped, electrophoresis tank entrance is equipped with deionized water spraying, ensures that vehicle body is entirely wet and enters electrophoresis tank; For reducing horizontal plane electrophoretic particles, between ultrafiltration washes 2 and ultrafiltration washes 3, electrophoretic particles is equipped with to wet sander; Wide-angle water logging rolling bed is equipped with for reducing electrophoretic paint knurl, after fresh deionized water is washed, before entering drying oven.
Electrophoresis is dried: adopt two-period form to dry, first paragraph bake out temperature 125 DEG C, time 3.5min; Second segment bake out temperature 180 DEG C, time 20min.
Be coated with PVC fluid sealant and stone-impact-proof paint: the material of use is TEROLAN8540CN fluid sealant (Henkel Corp.'s product), BETAGVARDDC2010/13 stone-impact-proof paint, fluid sealant is squeezing and coating constructions, stone-impact-proof paint is spraying application, stone-impact-proof paint coating thickness 580 μm.
PVC glue preliminary drying: bake out temperature 155 DEG C, drying time 14min.
Middle painting water colour paint is exempted from spraying: use aqueous functional colored paint B0 (in white, light grey, Dark grey any one, be Dark grey in the present embodiment) and water-based effect colored paint B1 (the plain color colored paint of shades of colour or metal flash paint, as: white colored paint, BOKDEAUX metal flash paint, shark ash metal flash paint, amber palm fibre metallic paint, carbon brilliant Summoning paint are the brilliant Summoning paint of carbon in the present embodiment).The first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 14 μm, then automatic coating thickness is the water-based effect colored paint B1 of 16 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 16 μm.The spraying of vehicle body outside surface and inner surface is independent, there is no sequencing to limit, but because existing technique outer lower face surface automatic coating B0 can cause part to spray to inner surface, the B0 therefore having sprayed outer surface adopts hand spray inner surface B1, then automatic coating outer surface B1.
Between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is 6min; Outer surface automatic coating B0 automatic coating flow 550cc/min, high pressure 80KV, rotating speed 50kt/min; Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 9 μm, first stop flow 450cc/min, high pressure 70KV, rotating speed 50kt/min; Second station coating thickness 7 μm, second station flow 250cc/min, high pressure 70KV, rotating speed 55kt/min.
Water colour paint preliminary drying: heating → insulation → cooling,
Described heating process time 3min, car body temperature 45 C;
Described heat preservation method time 3min, car body temperature 61 DEG C;
Described process for cooling time 3min, car body temperature 34 DEG C.
Lacquer varnish: vehicle body inner surface hand spray thickness is after the varnish of 36 μm, then be the varnish of 43 μm at vehicle body outside surface automatic coating thickness, the material of use is two component solvent-based varnishes, varnish automatic coating flow 550cc/min, high pressure 80KV.
Finish paint is dried: bake out temperature 148 DEG C, drying time 25min.
Performance test: embodiment and traditional coating process body paint appearance of coat quality, performance, environmental protection and energy saving effect and cost situation are contrasted, traditional coating process is that phosphatization pre-treatment matching dissolvent type has middle painting finish paint technology.
Table 1 the present invention and conventional method body paint appearance of coat quality comparation
From the data of table 1, body paint appearance of coat quality level of the present invention reaches conventional method outward appearance level.
Table 2 the present invention compares with conventional method body paint coating main performance
From table 2, painting layer antiseptic property of the present invention is suitable with conventional method, and scratch resistance and acid rain resistant Performance Ratio conventional method improve, and are conducive to tackling current harsh climate environment.
Table 3 the present invention compares with conventional method bicycle coating material organic solvent content
From table 3, the relative conventional method of the present invention, bicycle consumption of organic solvent reduces 3.5Kg.
Table 4 the present invention and conventional method vehicle body environmental protection and energy saving effectiveness comparison
| Conventional method | The present invention | Relatively | |
| VOC generation (g/m 2) | 50.9 | 19.7 | Reduce by 61% |
| Heavy metal waste slag generation (g/ platform) | 17 | 0 | Eliminate completely |
| Total waste water generation (Kg/ platform) | 395 | 283 | Reduce by 28% |
| Total energy consumption (KWH/ platform) | 605 | 450 | Reduce by 26% |
From table 4, the present invention is at reduction VOC discharge, heavy metal pollution, waste water and save Be very effective in energy consumption, and environmental protection income is very big.
Table 5 the present invention compares with conventional method bicycle application integrated cost
| Project | Conventional method (unit/platform) | The present invention's (unit/platform) | Cost declining (unit/platform) |
| Material of paint | 494.5 | 455.3 | 39.2 |
| The energy | 201.4 | 140.5 | 60.9 |
| Manually | 99.5 | 91.8 | 7.7 |
| Auxiliary material | 14.8 | 13.3 | 1.5 |
| Amount to | 810.2 | 700.9 | 109.3 |
From table 5, bicycle application integrated cost of the present invention comparatively conventional method declines 13.5%, has and reduces painting cost effect.
Claims (10)
1. a novel nano pre-treatment with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, step is as follows: novel nano pre-treatment → electrophoretic painting → electrophoresis dries → be coated with PVC fluid sealant and middle painting water colour paint → water colour paint preliminary drying → lacquer varnish → finish paint oven dry is exempted from stone-impact-proof paint → PVC glue preliminary drying → spraying;
Described novel nano pre-treating technology: comprise silane zirconates Combined Processing, described silane zirconates Combined Processing is: use silane zirconates complexing agent and deionized water to be made into tank liquor, entirely soak, processing time 150-240s, temperature 33-37 DEG C, pH value 4.4-4.9;
Middle painting water colour paint technique is exempted from described spraying: use aqueous functional colored paint B0 and water-based effect colored paint B1, and the first automatic coating thickness of vehicle body outside surface is the aqueous functional colored paint B0 of 12-15 μm, then automatic coating thickness is the water-based effect colored paint B1 of 10-18 μm; Vehicle body inner surface only hand spray thickness is the water-based effect colored paint B1 of 10-18 μm.
2. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described novel nano pre-treating technology process comprises: repeatedly Combined Processing → the continuation of washing → silane zirconates is repeatedly washed,
In described repeatedly washing, last washing uses deionized water entirely to soak, and processing time 60-150s, is washed till deionized water electrical conductivity≤300 μ s/cm;
During described continuation is repeatedly washed, last washing uses deionized water spray, and processing time 30-90s, is washed till deionized water electrical conductivity≤30 μ s/cm.
3. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, in described novel nano pre-treating technology, silane zirconates composite treating agent and deionized water join in tank liquor: zirconium content 100-200mg/L, copper content 0.8-2.4mg/L, free fluorine content 30-45mg/L, silicone content 25-55mg/L, tank liquor pH value 4.4-4.9.
4. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described electrophoresis coating technique process comprises: the washing of the deionization of electrophoresis → repeatedly;
Described electrophoresis is: entirely soak, solid part 19-22% in electrophoresis groove liquid, ash content 15-19%, electrical conductivity 1300-2000 μ s/cm, pH value 5.8-6.5;
In described repeatedly deionization washing, be washed till deionized water electrical conductivity < 5 μ s/cm for the last time.
5. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described electrophoresis dries employing two sections oven dry, first paragraph bake out temperature 110-130 DEG C, time 2-4min, second segment bake out temperature is 165-195 DEG C, time 12-25min.
6. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described spraying is exempted from middle painting water colour paint technique: between outer surface automatic coating B0, outer surface automatic coating B1, flash-off time is greater than 4min;
Outer surface automatic coating B1 is two standing posture sprayings, automatic coating first stop coating thickness 6-10 μm; Second station coating thickness 4-8 μm.
7. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described water paint preliminary drying technical process is: heating → insulation → cooling,
Described heating process time 3-4min, car body temperature 30-50 DEG C;
Described heat preservation method time 3-4min, car body temperature 60-65 DEG C;
Described process for cooling time 2-3min, car body temperature 30-35 DEG C.
8. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described lacquer varnish technique is crossed and is called: vehicle body inner surface hand spray thickness is after the varnish of 35-40 μm, then is the varnish of 40-45 μm at vehicle body outside surface automatic coating thickness.
9. a kind of novel nano pre-treatment as claimed in claim 1 with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, described finish paint stoving process is: bake out temperature 140-150 DEG C, drying time 20-25min.
10. as described in claim 1 or 3 novel nano pre-treatment with exempt from the supporting finishing of car body method of middle painting water paint, it is characterized in that, the sheet material that vehicle body uses comprises heat zinc coating plate and cold-reduced sheet, and on the heat zinc coating plate of described novel nano pre-treatment rear, in gained conversion film, zirconium content is 80-180mg/m
2, vehicle body cold-reduced sheet in gained conversion film zirconium content be 30-100mg/m
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360043A (en) * | 2018-01-04 | 2018-08-03 | 湖南吉利汽车部件有限公司 | A kind of Car Body Painting method |
| CN110129783A (en) * | 2019-04-15 | 2019-08-16 | 汉腾汽车有限公司 | A kind of Pretreatment Technology Before Finishing |
| CN110813680A (en) * | 2019-11-15 | 2020-02-21 | 襄阳航林机械有限公司 | Rust prevention method for cast iron cylinder body by heating infiltration |
| CN111763981A (en) * | 2020-07-31 | 2020-10-13 | 东风本田汽车有限公司 | Vehicle body coating process matched with amino resin modified zirconium salt pretreatment and electrophoresis |
| CN115739571A (en) * | 2022-11-15 | 2023-03-07 | 东风柳州汽车有限公司 | Coating method for paint collinear coating |
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| CN101927234A (en) * | 2009-06-24 | 2010-12-29 | 中国第一汽车集团公司 | Primerless paint system for steel workpieces |
| CN103031584A (en) * | 2012-12-06 | 2013-04-10 | 安徽未来表面技术有限公司 | Process of silane-zirconium salt conversion treatment before metal cathode electrophoresis coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101927234A (en) * | 2009-06-24 | 2010-12-29 | 中国第一汽车集团公司 | Primerless paint system for steel workpieces |
| CN103031584A (en) * | 2012-12-06 | 2013-04-10 | 安徽未来表面技术有限公司 | Process of silane-zirconium salt conversion treatment before metal cathode electrophoresis coating |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360043A (en) * | 2018-01-04 | 2018-08-03 | 湖南吉利汽车部件有限公司 | A kind of Car Body Painting method |
| CN110129783A (en) * | 2019-04-15 | 2019-08-16 | 汉腾汽车有限公司 | A kind of Pretreatment Technology Before Finishing |
| CN110813680A (en) * | 2019-11-15 | 2020-02-21 | 襄阳航林机械有限公司 | Rust prevention method for cast iron cylinder body by heating infiltration |
| CN111763981A (en) * | 2020-07-31 | 2020-10-13 | 东风本田汽车有限公司 | Vehicle body coating process matched with amino resin modified zirconium salt pretreatment and electrophoresis |
| CN115739571A (en) * | 2022-11-15 | 2023-03-07 | 东风柳州汽车有限公司 | Coating method for paint collinear coating |
| CN115739571B (en) * | 2022-11-15 | 2023-11-21 | 东风柳州汽车有限公司 | Coating method for collinear coating of paint |
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