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铝型材粉末氟碳喷涂前的工艺

点击次数:   更新时间:22/11/02 09:03:11     来源:www.wfdyyh.com关闭分    享:
  铝型材粉末氟碳喷涂前要进行化学前处理,使表面形成均匀的化学转化膜,以提高涂层的附着力和耐蚀性,常用的工艺有以下几种,接下来为大家详细介绍,快来一起了解
  (1)铝型材粉末氟碳喷涂前进行脱脂→水洗→碱蚀→水洗→出光→水洗→化学转化→水洗→水洗→烘干(60~85℃);
  (2)铝型材粉末氟碳喷涂前的“三合一”,清洗→水洗→水洗→化学转化→水洗→水洗→烘干(60~85℃)。
  粉末氟碳喷涂前的化学转化处理分为铬化、磷铬化及无铬化学处理,由于铬化膜的耐蚀性好,与漆层附着力强,工艺稳定,应用较广,但六价铬致癌,污染环境,无铬化学氧化性能远不及铬化、磷铬化,其应用受到一定限制。
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