CN107138379A - 电脑机箱的喷涂工艺 - Google Patents
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Abstract
本发明公开了一种电脑机箱的喷涂工艺,包括以下步骤:步骤S1,对电脑机箱表面进行氧化过程生成化学氧化膜;步骤S2,对机箱表面的化学氧化膜进行烘烤处理以脱去化学氧化膜中分子结合水;步骤S3,对机箱表面的化学氧化膜进行砂纸打磨以增加机箱表面粗糙度;步骤S4,对打磨后的机箱表面进行清洁擦洗;步骤S5,在化学氧化膜表面喷涂聚氟乙烯涂料形成漆膜;步骤S6,对漆膜进行烘干成膜。本发明在涂料喷涂之前对氧化膜进行烘烤使氧化膜中的分子结合水预先脱去,避免影响后续漆膜的附着力,产生流挂现象。本发明方法简单,易于操作。
Description
技术领域
本发明涉及一种电脑机箱的喷涂工艺。
背景技术
电脑机箱作为电脑配件中的一部分,用于提供空间放置电源、主板、各种扩展板卡、安装架、软盘驱动器、光盘驱动器、硬盘驱动器等电脑配件,并通过机箱内部的支撑部、支架、螺丝、夹子等连接件将上述各种电脑配件牢固地固定在机箱内部,形成一个集约型的整体。可见,电脑机箱主要用于放置和固定各电脑配件,起到一个承托和保护的作用,成为人们在组装电脑时最为关心的电脑配件之一。
现有的电脑机箱,其烤漆工艺均采用液体烤漆,将选择好的所需液态漆喷在备好的钢板上,然后烤干、固化,虽然成本较低,但液体烤漆采用大量有机溶剂,存在着严重的环境污染隐患,对人体会产生不可预知的影响,不利于环保。并且完成喷涂的机箱外壳产品在仓储器件出现漆膜开裂起皮现象。
发明内容
本发明的目的在于克服现有技术中的不足,提供了一种电脑机箱的喷涂工艺,此方法可以避免漆膜的开裂起皮现象。
为解决上述技术问题,本发明提供了一种电脑机箱的喷涂工艺,其特征是,包括以下步骤:
步骤S1,对电脑机箱表面进行氧化过程生成化学氧化膜;
步骤S2,对机箱表面的化学氧化膜进行烘烤处理以脱去化学氧化膜中分子结合水;
步骤S3,对机箱表面的化学氧化膜进行砂纸打磨以增加机箱表面粗糙度;
步骤S4,对打磨后的机箱表面进行清洁擦洗;
步骤S5,在化学氧化膜表面喷涂聚氟乙烯涂料形成漆膜;
步骤S6,对漆膜进行烘干成膜。
进一步的,步骤S1中氧化过程采用的材料包括CrO3、K3Fe(CN)6和NH4F,氧化过程为10~60s。
进一步的,化学氧化膜的厚度为0.5~4μm。
进一步的,步骤S2中烘烤处理的条件为:在80°~100°温度下烘烤30min~1h。
进一步的,步骤S4中清洁擦洗时采用无水乙醇。
进一步的,步骤S6中烘干温度范围为250°~290°。
进一步的,漆膜厚度为40~60μm。
与现有技术相比,本发明所达到的有益效果是:本发明在涂料喷涂之前对氧化膜进行烘烤使氧化膜中的分子结合水预先脱去,避免影响后续漆膜的附着力,产生流挂现象。本发明方法简单,易于操作。
具体实施方式
下面对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案,而不能以此来限制本发明的保护范围。
在本发明专利的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系,仅是为了便于描述本发明专利和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明专利的限制。此外,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。
在本发明专利的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明专利中的具体含义。
本发明的一种电脑机箱的喷涂工艺,包括以下步骤:
步骤S1,对电脑机箱表面进行氧化过程生成化学氧化膜;
现有技术中电脑机箱为铝合金机箱,为了使机箱表面具有三防性能(防水、防盐雾、防腐蚀),需对其表面进行氧化和涂料喷涂。氧化过程采用的材料包括CrO3、K3Fe(CN)6和NH4F,氧化过程为10~60s。氧化后形成化学氧化膜的成分为CrFe(CN)6·6Cr(OH)3·H2CrO4·4Al2O3·8H2O,化学氧化膜的厚度为0.5~4μm。
步骤S2,对机箱表面的化学氧化膜进行烘烤处理以脱去化学氧化膜中分子结合水;
经试验,氧化过程生成的这层化学氧化膜在高温环境下结构不够稳定,相关文献数据显示,化学氧化膜可以耐受的温度不超过60℃。温度超过60℃,水合物体系的结合水分子结合键就会被破坏,水分子变成水蒸气脱逸出去。先对化学氧化膜进行烘烤,烘烤处理的条件为:在80°~100°温度下烘烤30min~1h,使分子结合水都逃脱出去,可以避免分子结合水影响后续聚氟乙烯在高温喷涂时效果。因为如果不进行烘烤吹离,分子结合水仍在化学氧化膜中,而后续聚氟乙烯的喷涂和烘干需要在高温(大于250°)下进行,在此高温条件下,化学氧化膜中分子结合水就会逃脱出来,生成的气泡将覆盖在上面的漆膜顶起,使漆膜与化学氧化膜之间形成空穴,或气泡穿透漆膜后形成空洞。空穴或孔洞使漆膜同基体氧化膜在起泡区域脱离接触,不能形成漆膜附着力。工件在仓储或进行环境试验时,潮湿空气通过孔洞到达基体金属进而破坏已成为孔洞的化学氧化膜骨架结构,出现漆膜开裂起皮现象,并使其粉化,从而出现白色粉末状物质。
因此在喷涂涂料之前进行烘烤处理,一方面可以避免影响涂料形成漆膜的附着力,另一方面也可以避免后续漆膜出现开裂起皮甚至粉化的现象。
步骤S3,对机箱表面的化学氧化膜进行砂纸打磨以增加机箱表面粗糙度;以防过于光滑导致后续的漆膜产生流挂。
步骤S4,对打磨后的机箱表面进行清洁擦洗;清洁擦洗时采用无水乙醇。
步骤S5,在化学氧化膜表面喷涂聚氟乙烯涂料形成漆膜;
步骤S6,对漆膜进行烘干成膜。烘干温度范围为250°~290°。最终形成的漆膜厚度为40~60μm。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变型,这些改进和变型也应视为本发明的保护范围。
Claims (7)
1.电脑机箱的喷涂工艺,其特征是,包括以下步骤:
步骤S1,对电脑机箱表面进行氧化过程生成化学氧化膜;
步骤S2,对机箱表面的化学氧化膜进行烘烤处理以脱去化学氧化膜中分子结合水;
步骤S3,对机箱表面的化学氧化膜进行砂纸打磨以增加机箱表面粗糙度;
步骤S4,对打磨后的机箱表面进行清洁擦洗;
步骤S5,在化学氧化膜表面喷涂聚氟乙烯涂料形成漆膜;
步骤S6,对漆膜进行烘干成膜。
2.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,步骤S1中氧化过程采用的材料包括CrO3、K3Fe(CN)6和NH4F,氧化过程为10~60s。
3.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,化学氧化膜的厚度为0.5~4μm。
4.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,步骤S2中烘烤处理的条件为:在80°~100°温度下烘烤30min~1h。
5.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,步骤S4中清洁擦洗时采用无水乙醇。
6.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,步骤S6中烘干温度范围为250°~290°。
7.根据权利要求1所述的电脑机箱的喷涂工艺,其特征是,漆膜厚度为40~60μm。
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Citations (3)
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DE102005030488A1 (de) * | 2005-06-30 | 2007-01-04 | Chemetall Gmbh | Verfahren zum Beschichten metallischer Oberflächen mit einer korrosionsschützenden Beschichtung |
RU2413746C2 (ru) * | 2005-08-27 | 2011-03-10 | Эрликон Лейболд Вэкьюм Гмбх | Изделия с покрытием |
CN106536836A (zh) * | 2014-05-29 | 2017-03-22 | 日新制钢株式会社 | 涂装金属板及其制造方法、以及外装建材 |
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DE102005030488A1 (de) * | 2005-06-30 | 2007-01-04 | Chemetall Gmbh | Verfahren zum Beschichten metallischer Oberflächen mit einer korrosionsschützenden Beschichtung |
RU2413746C2 (ru) * | 2005-08-27 | 2011-03-10 | Эрликон Лейболд Вэкьюм Гмбх | Изделия с покрытием |
CN106536836A (zh) * | 2014-05-29 | 2017-03-22 | 日新制钢株式会社 | 涂装金属板及其制造方法、以及外装建材 |
Non-Patent Citations (1)
Title |
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