CN108176567A - 一种真空静电涂装工艺方法 - Google Patents
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Abstract
本发明公开了一种真空静电涂装工艺方法，工艺流程为：抛丸→真空静电喷涂底漆→真空辐射固化→刮腻子→烘干→风冷→打磨吹灰→静电喷涂第一道面漆→空气喷涂第二道面漆→真空辐射固化→烘干固化→风冷→下线。先采用静电喷枪在真空条件下喷涂底漆，漆膜更薄，油漆用量少，节省了油漆和成本；再采用红外辐射‑热风循环加热干燥方式对底漆进行固化，利用辐射加热对漆膜进行从内到外干燥，同时热风循环能加快漆膜表面的固化速度，有效地提高油漆固化效率，增加漆膜附着力；之后采用真空静电喷涂与传统空气喷涂相结合的方式，进行面漆的喷涂，喷涂后外观好，均匀性好，光泽度满足要求。
Description
技术领域
本发明涉及一种油漆涂装方法，具体涉及一种真空静电涂装工艺方法。
背景技术
随着我国工程机械的迅猛发展，其涂装质量也得到了很大提高。工程机械结构件的涂装一般都在主机厂完成，近年来不少主机厂纷纷取消对结构件的地摊式喷涂，先后建立了大型的涂装线，使涂装质量得打很大的改善。同时随着产量不断增加，涂装的每个工位节拍也越来越快。
环保真空静电涂装技术是把真空技术和静电涂装技术相结合而产生的新型涂装技术。环保真空静电涂装技术是指在一定的真空度下对工件进行油漆静电涂装，并且对废气进行过滤回收，降低废气排放的技术。目前，涂装行业常用的涂装方法有空气喷涂、静电涂装、电泳涂装和机器人喷涂等。
但传统的普通空气喷涂的方式油漆浪费严重，不适合大批量的生产。因此为了节约成本相继出现了空气喷涂、无气喷涂、混气喷涂、混气静电喷涂等喷涂工艺，综合对比混气静电喷涂效果最好。
有鉴于此结合实际生产，采用传统空气喷涂与真空静电喷涂相结合的方式，提供一种真空静电涂装工艺方法。
发明内容
本发明提供了一种真空静电涂装工艺方法，该喷涂工艺方法油漆利用率高，喷涂外观好，均匀性好，光泽度满足一定要求。
为实现上述目的，本发明采用以下技术方案：
一种真空静电涂装工艺方法，工艺流程为：抛丸→真空静电喷涂底漆→真空辐射固化→刮腻子→烘干→风冷→打磨吹灰→静电喷涂第一道面漆→空气喷涂第二道面漆→真空辐射固化→烘干固化→风冷→下线；
所述真空静电喷涂底漆工序，采用静电喷枪喷涂，真空度在0.04-0.007MPa，喷涂速度在0.3-0.5m/s，枪距在200-280mm；
所述真空辐射固化工序，采用红外辐射-热风循环加热，相对环境湿度在50-65%，真空度在0.005-0.008Pa，工件表面温度控制在110-150℃，保持5-10min；
所述静电喷涂第一道面漆工序，采用静电喷枪喷涂，喷涂速度在0.3-0.5m/s，枪距在200-250mm；
所述空气喷涂第二道面漆工序，采用空气喷枪喷涂，出漆量控制25-40cc/min，枪距在160-240mm。
其中，所述真空辐射固化工序，热空气加热干燥气流速度在0.5-3rn/s，温度在30-50℃。
其中，所述烘干固化工序具体条件为：加热温度100-120℃，加热烘干20-35min。
其中，所述底漆的喷涂厚度在5-15μm，第一道面漆的喷涂厚度在15-30μm，第二道面漆的喷涂厚度在10-20μm。
本发明有益效果如下：
本发明中先采用静电喷枪在真空条件下喷涂底漆，在真空环境下，油漆颗粒更细小，同样光亮度的情况下漆膜更薄，油漆用量少，节省了油漆和成本；再采用红外辐射-热风循环加热干燥方式对底漆进行固化，利用辐射加热对漆膜进行从内到外干燥，使油漆里的溶剂挥发，同时热风循环能加快漆膜表面的固化速度，有效地提高油漆固化效率，增加漆膜附着力；之后采用真空静电喷涂与传统空气喷涂相结合的方式，进行面漆的喷涂，提高油漆的利用率，喷涂后外观好，均匀性好，光泽度满足要求，可广泛应用于各种塑料、陶瓷、玻璃等制品的表面涂装。
具体实施方式
实施例1
一种真空静电涂装工艺方法，工艺流程为：抛丸→真空静电喷涂底漆→真空辐射固化→刮腻子→烘干→风冷→打磨吹灰→静电喷涂第一道面漆→空气喷涂第二道面漆→真空辐射固化→烘干固化→风冷→下线；
所述真空静电喷涂底漆工序，采用静电喷枪喷涂，真空度在0.04MPa，喷涂速度在0.5m/s，枪距在250mm，喷涂厚度在8μm；
所述真空辐射固化工序，采用红外辐射-热风循环加热，相对环境湿度在65%，真空度在0.007Pa，热空气加热干燥气流速度在1rn/s，温度在50℃，工件表面温度控制在150℃，保持8min；
所述静电喷涂第一道面漆工序，采用静电喷枪喷涂，喷涂速度在0.5m/s，枪距在220mm，喷涂厚度在20μm；
所述空气喷涂第二道面漆工序，采用空气喷枪喷涂，出漆量控制40cc/min，枪距在200mm，喷涂厚度在10μm；
所述烘干固化工序，加热温度在110℃，加热烘干30min。
实施例2
一种真空静电涂装工艺方法，工艺流程为：抛丸→真空静电喷涂底漆→真空辐射固化→刮腻子→烘干→风冷→打磨吹灰→静电喷涂第一道面漆→空气喷涂第二道面漆→真空辐射固化→烘干固化→风冷→下线；
所述真空静电喷涂底漆工序，采用静电喷枪喷涂，真空度在0.007MPa，喷涂速度在0.3m/s，枪距在280mm，喷涂厚度在15μm；
所述真空辐射固化工序，采用红外辐射-热风循环加热，相对环境湿度在65%，真空度在0.007Pa，热空气加热干燥气流速度在1rn/s，温度在50℃，工件表面温度控制在150℃，保持10min；
所述静电喷涂第一道面漆工序，采用静电喷枪喷涂，喷涂速度在0.3m/s，枪距在250mm，喷涂厚度在30μm；
所述空气喷涂第二道面漆工序，采用空气喷枪喷涂，出漆量控制40cc/min，枪距在240mm，喷涂厚度在20μm；
所述烘干固化工序，加热温度在120℃，加热烘干35min。
Claims (4)
1.一种真空静电涂装工艺方法，其特征在于，工艺流程为：抛丸→真空静电喷涂底漆→真空辐射固化→刮腻子→烘干→风冷→打磨吹灰→静电喷涂第一道面漆→空气喷涂第二道面漆→真空辐射固化→烘干固化→风冷→下线；
所述真空静电喷涂底漆工序，采用静电喷枪喷涂，真空度在0.04-0.007MPa，喷涂速度在0.3-0.5m/s，枪距在200-280mm；
所述真空辐射固化工序，采用红外辐射-热风循环加热，相对环境湿度在50-65%，真空度在0.005-0.008Pa，工件表面温度控制在110-150℃，保持5-10min；
所述静电喷涂第一道面漆工序，采用静电喷枪喷涂，喷涂速度在0.3-0.5m/s，枪距在200-250mm；
所述空气喷涂第二道面漆工序，采用空气喷枪喷涂，出漆量控制25-40cc/min，枪距在160-240mm。
2.根据权利要求1所述的一种真空静电涂装工艺方法，其特征在于，所述真空辐射固化工序，热空气加热干燥气流速度在0.5-3rn/s，温度在30-50℃。
3.根据权利要求1所述的一种真空静电涂装工艺方法，其特征在于，所述烘干固化工序具体条件为：加热温度100-120℃，加热烘干20-35min。
4.根据权利要求1所述的一种真空静电涂装工艺方法，其特征在于，所述底漆的喷涂厚度在5-15μm，第一道面漆的喷涂厚度在15-30μm，第二道面漆的喷涂厚度在10-20μm。
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| CN109821709A (zh) * | 2019-02-27 | 2019-05-31 | 浙江超浪新材料有限公司 | 一种保护木纹转印粉末涂料的喷涂工艺及该粉末涂料 |
| CN113000334A (zh) * | 2021-03-02 | 2021-06-22 | 西安万祥新材料有限公司 | 一种特厚膜静电涂料的喷涂工艺 |
| CN116532290A (zh) * | 2023-04-19 | 2023-08-04 | 武汉湾流科技股份有限公司 | 基于融合增强现实技术的汽车工件喷涂系统 |
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Cited By (3)
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| CN109821709A (zh) * | 2019-02-27 | 2019-05-31 | 浙江超浪新材料有限公司 | 一种保护木纹转印粉末涂料的喷涂工艺及该粉末涂料 |
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| CN116532290A (zh) * | 2023-04-19 | 2023-08-04 | 武汉湾流科技股份有限公司 | 基于融合增强现实技术的汽车工件喷涂系统 |
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