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軸套表面等離子噴涂陶瓷涂層

日期:2022-08-12 16:51 人氣:
       軸套是套在轉軸上筒狀機械零件,是滑動軸承的一個組成部分,轉動的時候軸和軸套是相對運動的,長時間的運動容易導致軸套磨損。目前,常用的修復方式主要有熱噴涂加工、噴焊、激光熔覆等。
       此次天盟公司受客戶委托,對一批軸套進行表面修復強化。采用等離子噴涂工藝,在表面噴涂陶瓷涂層。等離子噴涂是一種材料表面強化和表面改性技術,可以使基體表面具有耐磨、耐蝕、耐高溫氧化、電絕緣、隔熱、減磨合密封等性能。等離子噴涂技術是采用由直流電驅動的等離子電弧作為熱源,將陶瓷、合金、金屬等材料加熱到熔融或半熔融的狀態,并高速噴向經過預處理的工件表面而形成附著牢固的表面層的方法。
        陶瓷通常是指各種氧化物(主要是金屬氧化物)、氮化物、硼化物、硅化物、碳化物的通稱。陶瓷涂層主要分為以下幾種
        1、氧化鋁:純氧化鋁涂層是白色的,具有良好的耐高溫性、絕熱性和化學穩定性,還具有很高的硬度。
        2、氧化鋯:氧化鋯具有很高的熔點和很低的熱導率,因而,具有良好的耐熱性和絕熱性,即使在高溫下化學性能也是穩定的。
        3、氧化鉻:氧化鉻粉末熔點2435℃,具有很好的耐腐蝕性能和耐磨性能。
 
軸套表面等離子噴涂陶瓷涂層

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