WO2013023419A1 - 改进的车轮涂装工艺 - Google Patents

改进的车轮涂装工艺 Download PDF

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Publication number
WO2013023419A1
WO2013023419A1 PCT/CN2011/083601 CN2011083601W WO2013023419A1 WO 2013023419 A1 WO2013023419 A1 WO 2013023419A1 CN 2011083601 W CN2011083601 W CN 2011083601W WO 2013023419 A1 WO2013023419 A1 WO 2013023419A1
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Prior art keywords
paint
controlled
powder
spraying
spray gun
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PCT/CN2011/083601
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English (en)
French (fr)
Inventor
秦智伟
冯亮
张俊龙
刘长材
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中信戴卡轮毂制造股份有限公司
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Publication of WO2013023419A1 publication Critical patent/WO2013023419A1/zh

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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
    • B05D7/57—Three layers or more the last layer being a clear coat
    • B05D7/577—Three layers or more the last layer being a clear coat some layers being coated "wet-on-wet", the others not
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • 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
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • 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

Definitions

  • the present invention relates to a coating process, and more particularly to an aluminum wheel coating process.
  • the present invention proposes a finishing process for a fine-faced aluminum alloy wheel, which greatly improves the machining efficiency and appearance quality of the wheel.
  • the specific process flow of the invention is: pretreatment-drying-spraying powder-curing-spraying paint-spray protection paint-curing-machined car glossy surface-pretreatment-drying-spray transparent powder or transparent paint.
  • the bottom powder spraying process is sprayed by an electrostatic spray gun, the voltage is controlled at 60-80 KV, and the powder output is controlled at 10-15 g/s to ensure excellent adhesion between coatings.
  • the surface temperature of the workpiece is controlled to be 180 degrees Celsius for 8-12 minutes to maintain a certain flexibility and better interlayer adhesion.
  • the paint spraying process is sprayed with an air spray gun, the paint quantity is controlled by 50-100 cc/min, the atomization fan pressure is 2-3 bar, the gun distance is 150-200 mm, and the thickness of the upper edge of the window is ensured to be 10-15 um.
  • the protective paint spraying process spraying with an air spray gun, the paint quantity is controlled by 20-50 cc/min, the atomizing fan pressure is 2-3 bar, the gun distance is 150-200 mm, the spray gun angle is inclined by 30 degrees, and the spray gun direction is the same as the machining cutting direction. .
  • the workpiece temperature is controlled to 150 degrees and maintained for 10-15 minutes, so that the paint has better flexibility and better interlayer adhesion.
  • the machining process of the machine is as follows: control speed S1200rpm, feed rate F0.2mm/r, processing twice, feed per feed 0.2mm.
  • the spraying transparent powder process the coating thickness is 60-90 um.
  • the transparent powder curing process the workpiece temperature is 177 degrees Celsius, and keeps 10-15 Minutes, to ensure that the product can improve the flexibility of the coating under the premise of meeting the customer's standard, and avoid the defect of the collapse of the defective product.
  • the invention optimizes the process parameters of the spraying and curing, so that the machining production efficiency of the finishing wheel of the fine car is doubled, and the appearance quality is obviously improved.
  • Example 1 Improved wheel coating process, the specific process flow is: pretreatment-drying-spraying powder-curing-spraying paint-spray protection paint-curing-machined car glossy surface-pretreatment-drying- Spray transparent powder or clear lacquer.
  • the bottom powder spraying process is sprayed by an electrostatic spray gun, the voltage is 60KV, and the powder output is controlled at 10g/s to ensure excellent adhesion between coatings.
  • the surface temperature of the workpiece is controlled to 180 degrees Celsius for 8 minutes to maintain a certain flexibility and better interlayer adhesion.
  • the paint spraying process is sprayed with an air spray gun, the paint amount is controlled by 50 cc/min, the atomization fan pressure is 2 bar, and the gun distance is 150 mm, so that the thickness of the upper edge of the window is 10 um.
  • the protective paint spraying process spraying with air spray gun, the paint quantity is controlled by 20cc/min, the atomizing fan pressure is 2bar, the gun distance is 150mm, the spray gun angle is inclined by 30 degrees, the thickness of the window side protective paint is guaranteed to be 5um, the spray gun direction and machining The cutting direction is the same.
  • the workpiece temperature is controlled to 150 degrees for 10 minutes, so that the paint has better flexibility and better interlayer adhesion.
  • the machining process of the machine is as follows: control speed S1200rpm, feed rate F0.2mm/r, processing twice, feed per feed 0.2mm.
  • the spraying transparent powder process the coating thickness is 60 um.
  • the transparent powder curing process workpiece temperature 177 degrees Celsius, keep 10 Minutes, to ensure that the product can improve the flexibility of the coating under the premise of meeting the customer's standard, and avoid the defect of the collapse of the defective product.
  • Example 2 Improved wheel coating process, the specific process flow is: pretreatment-drying-spraying powder-curing-spraying paint-spray protection paint-curing-machined car glossy surface-pretreatment-drying- Spray transparent powder or clear lacquer.
  • the bottom powder spraying process is sprayed by an electrostatic spray gun, the voltage is controlled at 70KV, and the powder output is controlled at 13g/s to ensure excellent adhesion between coatings.
  • the surface temperature of the workpiece is controlled to be 180 degrees Celsius for 10 minutes to maintain a certain flexibility and better interlayer adhesion.
  • the paint spraying process is sprayed with an air spray gun, the paint quantity is controlled by 80 cc/min, the atomization fan pressure is 2.5 bar, the gun distance is 180 mm, and the thickness of the upper edge of the window is 13 um.
  • the protective paint spraying process spraying with air spray gun, the paint quantity is controlled by 35 cc/min, the atomizing fan pressure is 2.5 bar, the gun distance is 175 mm, the spray gun angle is inclined by 30 degrees, and the thickness of the window side protective paint is 7.5 um, and the spray gun direction is Machining cutting direction is the same.
  • the workpiece temperature is controlled to 150 degrees and maintained for 13 minutes, so that the paint has better flexibility and better interlayer adhesion.
  • the machining process of the machine is as follows: control speed S1200rpm, feed rate F0.2mm/r, processing twice, feed per feed 0.2mm.
  • the spraying transparent powder process the coating thickness is 75 um.
  • the transparent powder curing process the workpiece temperature is 177 degrees Celsius, and maintains 13 Minutes, to ensure that the product can improve the flexibility of the coating under the premise of meeting the customer's standard, and avoid the defect of the collapse of the defective product.
  • Example 3 Improved wheel coating process, the specific process flow is: pretreatment-drying-spraying powder-curing-spraying paint-spray protection paint-curing-machining car glossy surface-pretreatment-drying- Spray transparent powder or clear lacquer.
  • the bottom powder spraying process is sprayed by an electrostatic spray gun, the voltage is controlled at 80KV, and the powder output is controlled at 15g/s to ensure excellent adhesion between coatings.
  • the surface temperature of the workpiece is controlled to be 180 degrees Celsius for 12 minutes to maintain a certain flexibility and better interlayer adhesion.
  • the color paint spraying process is sprayed with an air spray gun, the paint quantity is controlled by 100 cc/min, the atomization fan pressure is 3 bar, the gun distance is 200 mm, and the thickness of the upper edge of the window is 15 um.
  • the protective paint spraying process spraying with air spray gun, paint quantity control 50cc/min, atomizing fan pressure 3bar, gun distance 200mm, spray gun angle inclined 30 degrees, ensuring window single side protective paint thickness 10um, spray gun direction and machining The cutting direction is the same.
  • the workpiece temperature is controlled to 150 degrees for 15 minutes, so that the paint has better flexibility and better interlayer adhesion.
  • the machining process of the machine is as follows: control speed S1200rpm, feed rate F0.2mm/r, processing twice, feed per feed 0.2mm.
  • the spraying transparent powder process the coating thickness is 60-90 um.
  • the transparent powder curing process the workpiece temperature is 177 degrees Celsius, and remains 15 Minutes, to ensure that the product can improve the flexibility of the coating under the premise of meeting the customer's standard, and avoid the defect of the collapse of the defective product.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

一种改进的车轮涂装工艺，其包括：预处理——烘干——喷涂底粉——固化——喷色漆——喷保护漆——固化——机加工车亮面——预处理——烘干——喷透明粉或透明漆。通过对喷涂和固化的工艺参数进行优化，提高了精车亮面车轮的机加工生产效率，改善了外观质量。

Description

改进的车轮涂装工艺 说明书
技术领域：
本发明涉及一种涂装工艺，具体地说涉及一种铝车轮涂装工艺。
背景技术
目前精车亮面产品制造工艺：预处理-烘干-喷粉-固化-喷色漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆，其中机加工过程中非常容易出现车轮窗口色漆被打花，加工边沿崩漆，为减少这两类缺陷，通常是机加工调整进给率、加工转速，增加加工遍数，从而导致加工效率降低，严重影响最终外观效果及生产效率，而效果不明显。
发明内容
为克服以上工艺中存在的不足，本发明提出一种精车亮面铝合金车轮涂装工艺，使得此种类型车轮机加工效率及加工后的外观质量得到大幅提高。
本发明的具体工艺流程为：预处理-烘干-喷涂底粉-固化-喷色漆-喷保护漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆。
所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在60-80KV，出粉量控制在10-15g/s，保证优良的涂层间附着力。
所述粉末固化工序，工件表面温度控制为180摄氏度，保持8-12分钟，从而使粉末保持一定柔韧性与更好的层间附着力。
所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制50-100cc/min，雾化扇形压力2-3bar，枪距150-200mm，保证窗口上边沿厚度10-15um。
所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制20-50cc/min，雾化扇形压力2-3bar，枪距150-200mm，喷枪角度倾斜30度，喷枪方向与机加工切削方向相同。
所述油漆固化工序，工件温度控制为150度，保持10-15分钟，使油漆有较好的柔韧性与更好的层间附着力。
所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm 。
所述喷涂透明粉工序：涂层厚度 60-90um 。
所述透明粉固化工序：工件温度 177 摄氏度，保持 10-15 分钟，从而保证产品在能满足客户标准前提下提高涂层柔韧性，避免不合格品返工产生崩漆缺陷。
本发明由于优化了喷涂及固化的工艺参数，使得精车亮面车轮的机加工生产效率提高一倍，且外观质量得到明显改善。
具体实施方式
实施例1：改进的车轮涂装工艺，具体工艺流程为：预处理-烘干-喷涂底粉-固化-喷色漆-喷保护漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆。
所述底粉喷涂工序，采用静电喷枪喷涂，电压为60KV，出粉量控制在10g/s，保证优良的涂层间附着力。
所述粉末固化工序，工件表面温度控制为180摄氏度，保持8分钟，从而使粉末保持一定柔韧性与更好的层间附着力。
所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制50cc/min，雾化扇形压力2bar，枪距150mm，保证窗口上边沿厚度10um。
所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制20cc/min，雾化扇形压力2bar，枪距150mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度5um，喷枪方向与机加工切削方向相同。
所述油漆固化工序，工件温度控制为150度，保持10分钟，使油漆有较好的柔韧性与更好的层间附着力。
所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm 。
所述喷涂透明粉工序：涂层厚度 60um 。
所述透明粉固化工序：工件温度 177 摄氏度，保持 10 分钟，从而保证产品在能满足客户标准前提下提高涂层柔韧性，避免不合格品返工产生崩漆缺陷。
实施例2：改进的车轮涂装工艺，具体工艺流程为：预处理-烘干-喷涂底粉-固化-喷色漆-喷保护漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆。
所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在70KV，出粉量控制在13g/s，保证优良的涂层间附着力。
所述粉末固化工序，工件表面温度控制为180摄氏度，保持10分钟，从而使粉末保持一定柔韧性与更好的层间附着力。
所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制80cc/min，雾化扇形压力2.5bar，枪距180mm，保证窗口上边沿厚度13um。
所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制35cc/min，雾化扇形压力2.5bar，枪距175mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度7.5um，喷枪方向与机加工切削方向相同。
所述油漆固化工序，工件温度控制为150度，保持13分钟，使油漆有较好的柔韧性与更好的层间附着力。
所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm 。
所述喷涂透明粉工序：涂层厚度 75um 。
所述透明粉固化工序：工件温度 177 摄氏度，保持 13 分钟，从而保证产品在能满足客户标准前提下提高涂层柔韧性，避免不合格品返工产生崩漆缺陷。
实施例3：改进的车轮涂装工艺，具体工艺流程为：预处理-烘干-喷涂底粉-固化-喷色漆-喷保护漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆。
所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在80KV，出粉量控制在15g/s，保证优良的涂层间附着力。
所述粉末固化工序，工件表面温度控制为180摄氏度，保持12分钟，从而使粉末保持一定柔韧性与更好的层间附着力。
所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制100cc/min，雾化扇形压力3bar，枪距200mm，保证窗口上边沿厚度15um。
所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制50cc/min，雾化扇形压力3bar，枪距200mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度10um，喷枪方向与机加工切削方向相同。
所述油漆固化工序，工件温度控制为150度，保持15分钟，使油漆有较好的柔韧性与更好的层间附着力。
所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm 。
所述喷涂透明粉工序：涂层厚度 60-90um 。
所述透明粉固化工序：工件温度 177 摄氏度，保持 15 分钟，从而保证产品在能满足客户标准前提下提高涂层柔韧性，避免不合格品返工产生崩漆缺陷。

Claims (4)

  1. 改进的车轮涂装工艺，其特征在于：预处理-烘干-喷涂底粉-固化-喷色漆-喷保护漆-固化-机加工车亮面-预处理-烘干-喷透明粉或透明漆；
    所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在60-80KV，出粉量控制在10-15g/s，保证优良的涂层间附着力；
    所述粉末固化工序，工件表面温度控制为180摄氏度，保持8-12分钟，从而使粉末保持一定柔韧性与更好的层间附着力；
    所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制50-100cc/min，雾化扇形压力2-3bar，枪距150-200mm，保证窗口上边沿厚度10-15um；
    所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制20-50cc/min，雾化扇形压力2-3bar，枪距150-200mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度5-10um，喷枪方向与机加工切削方向相同；
    所述油漆固化工序，工件温度控制为150度，保持10-15分钟，使油漆有较好的柔韧性与更好的层间附着力；
    所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm ；
    所述喷涂透明粉工序：涂层厚度 60-90um ；
    所述透明粉固化工序：工件温度 177 摄氏度，保持 10-15 分钟。
  2. 按照权利要求 1 所述的改进的车轮涂装工艺，其特征在于：
    所述底粉喷涂工序，采用静电喷枪喷涂，电压为60KV，出粉量控制在10g/s，保证优良的涂层间附着力；
    所述粉末固化工序，工件表面温度控制为180摄氏度，保持8分钟，从而使粉末保持一定柔韧性与更好的层间附着力；
    所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制50cc/min，雾化扇形压力2bar，枪距150mm，保证窗口上边沿厚度10um；
    所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制20cc/min，雾化扇形压力2bar，枪距150mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度5um，喷枪方向与机加工切削方向相同；
    所述油漆固化工序，工件温度控制为150度，保持10分钟，使油漆有较好的柔韧性与更好的层间附着力；
    所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm ；
    所述喷涂透明粉工序：涂层厚度 60um ；
    所述透明粉固化工序：工件温度 177 摄氏度，保持 10 分钟。
  3. 按照权利要求 1 所述的改进的车轮涂装工艺，其特征在于：
    所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在70KV，出粉量控制在13g/s，保证优良的涂层间附着力；
    所述粉末固化工序，工件表面温度控制为180摄氏度，保持10分钟，从而使粉末保持一定柔韧性与更好的层间附着力；
    所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制80cc/min，雾化扇形压力2.5bar，枪距180mm，保证窗口上边沿厚度13um；
    所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制35cc/min，雾化扇形压力2.5bar，枪距175mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度7.5um，喷枪方向与机加工切削方向相同；
    所述油漆固化工序，工件温度控制为150度，保持13分钟，使油漆有较好的柔韧性与更好的层间附着力；
    所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm ；
    所述喷涂透明粉工序：涂层厚度 75um ；
    所述透明粉固化工序：工件温度 177 摄氏度，保持 13 分钟。
  4. 按照权利要求 1 所述的改进的车轮涂装工艺，其特征在于：
    所述底粉喷涂工序，采用静电喷枪喷涂，电压控制在80KV，出粉量控制在15g/s，保证优良的涂层间附着力；
    所述粉末固化工序，工件表面温度控制为180摄氏度，保持12分钟，从而使粉末保持一定柔韧性与更好的层间附着力；
    所述色漆喷涂工序，采用空气喷枪喷涂，出漆量控制100cc/min，雾化扇形压力3bar，枪距200mm，保证窗口上边沿厚度15um；
    所述保护漆喷涂工序：采用空气喷枪喷涂，出漆量控制50cc/min，雾化扇形压力3bar，枪距200mm，喷枪角度倾斜30度，保证窗口单侧保护漆厚度10um，喷枪方向与机加工切削方向相同；
    所述油漆固化工序，工件温度控制为150度，保持15分钟，使油漆有较好的柔韧性与更好的层间附着力；
    所述机加工车亮面工序：控制转速 S1200rpm ，进给率为 F0.2mm/r ，加工两遍，每遍进给量 0.2mm ；
    所述喷涂透明粉工序：涂层厚度 60-90um ；
    所述透明粉固化工序：工件温度 177 摄氏度，保持 15 分钟。
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