鋼材表面粗糙度對熱浸鍍鋅鍍層機械性質之研究

鋅為淺灰色的金屬，比重為7.14，原子量等於65.37，在化合物中鋅為二價金屬，鋅的標準電位為-0.76伏特，電化當量為1.22克/安培-小時，熔點為419 ℃，熱浸鍍鋅，具有表面形態及厚度可控制、免維護、成本較低、鍍層耐腐蝕性強等優點，而鋼材表面粗糙度是依據加工方法的不同所產生的，以一般加工單位為例，各製造工廠於零件加工製造過程中，因加工精度不同且機具運轉中會產生高頻振動，加工零件會與刀具會產生一定的摩擦，導致加工材料於加工後表面會產生粗糙度不一的零件。因一般機械加工零件，因藍圖及規範後續需進行熱浸鍍材處理，故鍍層的附著性及表面粗糙度就顯得格外重要，故本研究即針對鋼材經機械加工後，不同表面粗糙度與其機械性質相關變異進行研究。

關鍵字

鍍鋅；熱浸鍍；表面粗糙度；附著性；機械性質

並列摘要

Zinc is a light gray metal with a specific gravity of 7.14 and an atomic weight of 65.37. Zinc is a divalent metal in the compound. The standard potential of zinc is -0.76 volts, the electrochemical equivalent is 1.22 g/ampere-hour, and the melting point is 419 ° C. Zinc-plated, with surface shape and thickness controllable, maintenance-free, low cost, strong corrosion resistance of the coating, etc., and the surface roughness of the steel is produced according to the different manufacturing methods. Take the general processing unit as an example, each manufacturing process in a mechanical plant, different machining precisions and high-frequency vibrations during machining would result in various tolenrence. The machining parts will have a certain surface friction with the tool, resulting in the machining materials having different roughness on the machined surface. Due to the mechanical processing of the parts, the blueprint and the specification need to be hot-dip coated, so the adhesion and surface roughness of the coating are particularly important. Therefore, this study is aimed at the different surface roughness of the steel after mechanical processing. Mechanical properties related variations were studied.