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九洲國際四期涂料案例

所屬分類:案例展示 發布時間:2020-04-29 瀏覽次數:201
  流痕嚴重原因:
  
  涂料流動性差,粘度高,涂料向下流動時不能滴落,從而產生嚴重的流痕;涂料流出時壓力過大,流涂桿頭與型腔表面距離太近,涂料液對涂層表面形成沖擊,出現凸凹不平的痕跡;涂料流量小,流動不穩定,在型腔的表面會形成流痕。
  
  采取措施:
  
  1.流涂時采用大流量從上到下迅速流完,不要長時間停留在砂型表面。
  
  2.提高涂料流動性流平性,降低粘度。
  
  3. 加大流涂桿頭與型腔表面距離,一般距離為18-25mm為宜。
  
  4.采用扇形流涂桿頭。

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