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噴涂知識

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熱噴涂的操作方法

人氣:    發布時間:2021/08/28
熱噴涂的操作方法

  根據熱噴涂使用的熱源不同和噴涂材料狀態的區別。

  

  電弧噴涂是在兩根分別接電源正極及負極的不斷送進的金屬絲材間產生電弧,加熱的熔融部分被壓縮空氣射流使其霧化,噴射到基體上形成涂層的方法。

  

  由于這種方法只適于噴涂絲材,所以又稱為電弧絲噴涂。

  

  1、特點

  

  (1)噴涂材料必須是導電材料。

  

  (2)電弧溫度低于等離子體的溫度,但高于氧乙炔火焰溫度。霧化絲材的壓縮空氣壓力可以較高,所以噴涂層比較致密。

  

  (3)由于兩根金屬絲同時送進,所以噴涂效率高。

  

  2、用途

  

  適用于大型軸類、滾筒的噴涂以及用于大型結構件的長效防護。


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