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全國服務熱線:400-0708-056

熱噴涂涂層后處理

日期:2019-11-02 11:44 人氣:
    經過噴涂所得涂層有時不能直接使用,必須進行一系列的后處理。用于防腐蝕的涂層為了防止腐蝕介質透過涂層的孔隙到達基材引起基材的腐蝕,必須對涂層進行封孔處理。用作封孔劑的材料很多,但要根據工件的工作介質、環境、溫度及成本等多種因素進行考慮。
    對于承受高應力載荷或沖擊磨損的工件,為了提高涂層的結合強度,要對噴涂層進行重熔處理(如火焰重熔、感應重熔、激光重熔以及熱等靜壓等),使多孔的且與基體僅以機械結合的涂層變為與基材呈冶金結合的致密涂層有尺寸精度要求的,要對涂層進行機械加工。
    由于噴涂涂層具有與一般的金屬及陶瓷材料不同的特點,如涂層有微孔,不利于散熱;涂層本身的強度較低,不能承受很大的切削力;涂層中有很多硬的質點,對刀具的磨損很快等,因而形成了噴涂涂層不同于一般材料的難于加工的特點。所以必須選用合理的加工方法和相應的工藝參數才能保證噴涂層機械加工的順利進行和保證達到所要求的尺寸精度。
    本信息由信息部張忠霞搜集整理,服務熱線:400-0708-056。
熱噴涂涂層后處理

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