CN103909050B - Improved wheel spraying technology - Google Patents
Improved wheel spraying technology Download PDFInfo
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- CN103909050B CN103909050B CN201410141925.8A CN201410141925A CN103909050B CN 103909050 B CN103909050 B CN 103909050B CN 201410141925 A CN201410141925 A CN 201410141925A CN 103909050 B CN103909050 B CN 103909050B
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Abstract
The invention discloses improved wheel spraying technology. The technological process includes pretreatment, drying, base powder spraying, colored paint spraying, curing, pretreatment, drying, tinted spraying of copper paint, curing, pretreatment, drying, spraying of semi-matte transparent powder and curing. Spraying parameters are optimized, an improved spraying mode and a repair method are adopted, production efficiency is improved greatly, and local bronze effect is clear and gorgeous.
Description
Technical field
The present invention relates to spraying field, relate to a kind of aluminum alloy surface chromatography coating process specifically.
Background technology
Wheel is the important appearance member of automobile, for lifting automobile aesthetic feeling, attracts consumer alert to play an important role.Along with the demand of people to automobile appearance personalization is more and more higher, fashion, the dynamic trend having become a kind of epoch.The increasing automobile assembling wheel product of composite color., there is the defects such as qualification rate is low, complex process, technical difficulty are large in the wheel chromatography technique of prior art.
Summary of the invention
The wheel spraying coating process that the present invention improves, technological process is: repair-spray half dumb light transparent powder under pretreatment-spraying end powder-spraying colored paint-pretreatment-chromatography spraying-line.
Described pretreating process comprises pre-degreasing, degreasing, washing, pickling, washing, passivation, washing, closes, washes, dries 10 operations, realizes wheel surface passivation film forming, overall paint film property after guarantee spraying.
Powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 150-250 ㎜, tells powder pressure at 0.5-1.5bar; Static pressure controls at 40-80KV, tells powder amount and is about 3.0-4.5 m
3/ h, front coating thickness is at 130-180 μm, and end powder solidification temperature is 175-180 DEG C, and temperature retention time is 18-25 minute.
Described spraying colored paint operation adopts air cannon spraying, air cannon and wheel surface distance are 150-250 ㎜, air cannon atomizing pressure is 2.0-4.0bar, fan-shaped pressure is 2.0-4.5bar, telling paint amount is 60-120cc/min, and colored paint coating thickness is at 10-20 μ, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 145 DEG C-150 DEG C, and temperature retention time is 15-20 minute.
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm.Adopt safety device, non-color-registering part is effectively covered, ensure color-registering part color tinted clear.
Described chromatography spraying process, adopts hand spray, and spray gun is 150-250mm with being taken turns distance by spraying vehicle, the total blast 5-6bar of compressed air, paint viscosity 18-20 second (viscosity measurements instrument: be coated with 4# cup, stopwatch); During spraying, each circle of wheel forward and backward, singly turns time 17-19 second; Hand lance be 70-90 ° by the angle spraying portion faces.
Repair spraying process under described line, adopt and manually repair.Patching material is 800-1500# sand paper, reagent containing acetone 50%.By long for sand paper cutting 80mm × wide 40mm rectangle, dip in described reagent 3-5g, along the counterclockwise polishing of wheel spoke window.Make the distinct of color-registering part, greatly raise the efficiency.
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are at 150-250 ㎜, and telling powder pressure is 0.5-1.5bar; Static pressure controls, for 40-60KV, to tell powder amount and be about 2.5-4.0 m
3/ h, front coating thickness is at 80-120 μm, and transparent powder solidification temperature is 185 DEG C-190 DEG C, and temperature retention time is 15-20 minute.
Specific embodiment
Example 1: the wheel spraying coating process that the present invention improves, technological process is: repair-spray half dumb light transparent powder under pretreatment-spraying end powder-spraying colored paint-pretreatment-chromatography spraying-line.
Described pretreating process comprises pre-degreasing, degreasing, washing, pickling, washing, passivation, washing, closes, washes, dries 10 operations, realizes wheel surface passivation film forming, overall paint film property after guarantee spraying.
Powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 150 ㎜, tells powder pressure 0.5bar; Static pressure controls at 40KV, tells powder amount and is about 3.0 m
3/ h, front coating thickness 130 μm, end powder solidification temperature is 175 DEG C, and temperature retention time is 18 minutes.
Described spraying colored paint operation adopts air cannon spraying, the distance of air cannon and wheel surface is 150 ㎜, air cannon atomizing pressure is 2.0bar, fan-shaped pressure is 2.0bar, telling paint amount is 60cc/min, and colored paint coating thickness is 10 μ, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 145 DEG C, and temperature retention time is 15 minutes.
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm.Adopt safety device, non-color-registering part is effectively covered, ensure color-registering part color tinted clear.
Described chromatography spraying process, adopts hand spray, and spray gun and wheel tracks are from 150-250mm, and compression stroke total blast control 5-6bar, paints viscosity 18 seconds (viscosity measurements instrument: be coated with 4# cup, stopwatch); During spraying, each circle of wheel forward and backward, singly turns time 17-19 second; Hand lance be 70 ° by the angle spraying portion faces.
Repair spraying process under described line, adopt and manually repair.Patching material is 800# sand paper, reagent containing acetone 50%.Sand paper is cut to 80mm × 40mm rectangle, dips in described reagent 3g, along the counterclockwise polishing of wheel spoke window, make the distinct of color-registering part, greatly raise the efficiency.
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are 150 ㎜, and telling powder pressure is 0.5bar; Static pressure is 40KV, tells powder amount and is about 2.5 m
3/ h, front coating thickness 80 μm, transparent powder solidification temperature is 185 DEG C, and temperature retention time is 15 minutes.
Example 2: powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 250 ㎜, tells powder pressure at 1.5bar; Static pressure controls at 80KV, tells powder amount and is about 4.5 m
3/ h, front coating thickness 180 μm, end powder solidification temperature is 180 DEG C, and temperature retention time is 25 minutes.
Described spraying colored paint operation adopts air cannon spraying, the distance of air cannon and wheel surface is 250 ㎜, air cannon atomizing pressure is 4.0bar, fan-shaped pressure is 4.5bar, telling paint amount is 120cc/min, and colored paint coating thickness is 20 μ, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 150 DEG C, and temperature retention time is 20 minutes.
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm.Adopt safety device, non-color-registering part is effectively covered, ensure color-registering part color tinted clear.
Described chromatography spraying process, adopts hand spray technology, and the distance of spray gun and wheel surface is at 150-250mm, and compression stroke total blast control 5-6bar, paints viscosity and adjust 20 seconds (viscosity measurements instrument: be coated with 4# cup, stopwatch); During spraying, each circle of wheel forward and backward, singly turns time 17-19 second; Hand lance is with to be sprayed portion faces vertical, and angle is 90 °.
Repair spraying process under described line, adopt and manually repair.Patching material is 800-1500# sand paper, reagent containing acetone 50%.By sand paper cutting 80mm × 40mm rectangle, dip in described reagent 5g, along the counterclockwise polishing of wheel spoke window, make the distinct of color-registering part, greatly raise the efficiency.
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are 250 ㎜, and telling powder pressure is 1.5bar; Static pressure is 60KV, tells powder amount and is about 4.0 m
3/ h, front coating thickness 120 μm, transparent powder solidification temperature is 190 DEG C, and temperature retention time is 20 minutes.
Claims (3)
1. the wheel spraying coating process improved, technological process is: repair-spray half dumb light transparent powder under pretreatment-spraying end powder-spraying colored paint-pretreatment-chromatography spraying-line, described pretreating process comprise pre-degreasing, degreasing, washing, pickling, washing, passivation, washing, close, washing, baking operation, it is characterized in that:
Powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 150-250mm, and telling powder pressure is 0.5-1.5bar; Static pressure is 40-80KV, and telling powder amount is 3.0-4.5m
3/ h, front coating thickness is 130-180 μm, and end powder solidification temperature is 175-180 DEG C, and temperature retention time is 18-25 minute;
Described spraying colored paint operation adopts air cannon spraying, air cannon and wheel surface distance are 150-250mm, air cannon atomizing pressure is 2.0-4.0bar, fan-shaped pressure is 2.0-4.5bar, telling paint amount is 60-120cc/min, and colored paint coating thickness is at 10-20 μm, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 145 DEG C-150 DEG C, and temperature retention time is 15-20 minute;
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm;
Described chromatography spraying process adopts hand spray, and spray gun is 150-250mm with being taken turns distance by spraying vehicle, the total blast 5-6bar of compressed air, paints viscosity 18-20 second; Viscosity measurements instrument is for being coated with 4# cup and stopwatch; Wheel forward and backward each circle during spraying, the time that singly turns is 17-19 second; Hand lance be 70-90 ° by the angle spraying portion faces;
Repair spraying process under described line and adopt artificial reparation, patching material is 800-1500# sand paper, reagent containing acetone 50%; By long for sand paper cutting 80mm × wide 40mm rectangle, dip in described reagent 3-5g, along the counterclockwise polishing of wheel spoke window;
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are at 150-250mm, and telling powder pressure is 0.5-1.5bar; Static pressure controls as 40-60KV, and telling powder amount is 2.5-4.0m
3/ h, front coating thickness is 80-120 μm, and transparent powder solidification temperature is 185 DEG C-190 DEG C, and temperature retention time is 15-20 minute.
2. according to a kind of described in claim 1 wheel spraying coating process of improvement, it is characterized in that: powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 150mm, and telling powder pressure is 0.5bar; Static pressure is 40KV, and telling powder amount is 3.0m
3/ h, front coating thickness is 130 μm, and end powder solidification temperature is 175 DEG C, and temperature retention time is 18 minutes;
Described spraying colored paint operation adopts air cannon spraying, the distance of air cannon and wheel surface is 150mm, air cannon atomizing pressure is 2.0bar, fan-shaped pressure is 2.0bar, telling paint amount is 60cc/min, and colored paint coating thickness is 10 μm, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 145 DEG C, and temperature retention time is 15 minutes;
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm;
Described chromatography spraying process adopts hand spray, and spray gun and wheel tracks are from 150-250mm, and compression stroke total blast control 5-6bar, paints viscosity 18 seconds; Viscosity measurements instrument is for being coated with 4# cup and stopwatch; During spraying, each circle of wheel forward and backward, singly turns time 17-19 second; Hand lance be 70 ° by the angle spraying portion faces;
Repair spraying process under described line and adopt artificial reparation, patching material is 800# sand paper, reagent containing acetone 50%;
Sand paper is cut to 80mm × 40mm rectangle, dips in described reagent 3g, along the counterclockwise polishing of wheel spoke window;
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are 150mm, and telling powder pressure is 0.5bar; Static pressure is 40KV, and telling powder amount is 2.5m
3/ h, front coating thickness 80 μm, transparent powder solidification temperature is 185 DEG C, and temperature retention time is 15 minutes.
3. according to a kind of described in claim 1 wheel spraying coating process of improvement, it is characterized in that: powder operation at the bottom of described spraying adopts static gun spraying, and the distance of static gun and wheel surface is 250mm, tells powder pressure at 1.5bar; Static pressure controls at 80KV, and telling powder amount is 4.5m
3/ h, front coating thickness 180 μm, end powder solidification temperature is 180 DEG C, and temperature retention time is 25 minutes;
Described spraying colored paint operation adopts air cannon spraying, the distance of air cannon and wheel surface is 250mm, air cannon atomizing pressure is 4.0bar, fan-shaped pressure is 4.5bar, telling paint amount is 120cc/min, and colored paint coating thickness is 20 μ, and wheel workpiece temperature is 40-50 DEG C, colored paint solidification temperature is 150 DEG C, and temperature retention time is 20 minutes;
Described chromatography spraying process, the bore of hand gun is 0.8-1.4mm;
Described chromatography spraying process, adopts hand spray technology, and the distance of spray gun and wheel surface is at 150-250mm, and compression stroke total blast control 5-6bar, paints viscosity and adjust 20 seconds; Viscosity measurements instrument is for being coated with 4# cup and stopwatch; During spraying, each circle of wheel forward and backward, singly turns time 17-19 second; Hand lance is with to be sprayed portion faces vertical, and angle is 90 °;
Repair spraying process under described line, adopt and manually repair, patching material is 800-1500# sand paper, reagent containing acetone 50%, by sand paper cutting 80mm × 40mm rectangle, dip in described reagent 5g, along the counterclockwise polishing of wheel spoke window;
Described half dumb light transparent powder spraying process adopts static gun spraying method, and static gun and wheel surface distance are 250mm, and telling powder pressure is 1.5bar; Static pressure is 60KV, and telling powder amount is 4.0m
3/ h, front coating thickness 120 μm, transparent powder solidification temperature is 190 DEG C, and temperature retention time is 20 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410141925.8A CN103909050B (en) | 2014-04-10 | 2014-04-10 | Improved wheel spraying technology |
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| CN201410141925.8A CN103909050B (en) | 2014-04-10 | 2014-04-10 | Improved wheel spraying technology |
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| CN103909050B true CN103909050B (en) | 2015-07-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104841622A (en) * | 2015-05-08 | 2015-08-19 | 苏州雅泛迪铝业有限公司 | Coating method of automotive chromatographical wheel |
| CN105289957B (en) * | 2015-11-18 | 2018-10-12 | 威海万丰奥威汽轮有限公司 | Three color aluminium alloy wheel hubs of one kind and its production technology |
| CN107214063A (en) * | 2017-06-22 | 2017-09-29 | 中信戴卡股份有限公司 | A kind of aluminium alloy wheel hub polishes chromatography technique |
| CN115957953A (en) * | 2022-12-30 | 2023-04-14 | 大亚车轮制造有限公司 | Lettering and color registering process for wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000246166A (en) * | 1999-02-26 | 2000-09-12 | Wilson:Kk | Partially spray coating method for vehicle surface to be coated |
| CN101602042B (en) * | 2009-07-10 | 2011-07-27 | 广州市金钟汽车零件制造有限公司 | Automatic powder spraying line for automobile wheel hub finishing components |
| CN102059207A (en) * | 2010-12-31 | 2011-05-18 | 天津戴卡轮毂制造有限公司 | Aluminum alloy wheel coating process |
| CN102284408B (en) * | 2011-08-12 | 2013-07-10 | 中信戴卡股份有限公司 | Improved wheel coating process |
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