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一、概述在仪器仪表中光綫指示的光学系統零件,一般均用黑鎳和发藍作为工作保护层,以达到能防止光的乱反射,又有足够好的防腐蝕能力。鉴于黑鎳和发藍的防腐蝕性能不够理想,它們在24小时湿热試驗中,一般都有白花和生銹的現象;同时黑鎳鍍层不耐摩擦,在运輸和装配过程中常常会发生边緣及表面鍍层擦伤露底,影响美观和防腐蝕性。我們經过一年多的摸索試驗,成功地采用了黑铬鍍层,并且在长期实际生产应用中証明效果甚好。二、黑鉻鍍层的防腐蝕性能黑鎔鍍层是含有75%铬和25%氧化铬的混合物,鍍层耐磨,可以拋光,并在实际应用中証明:在真空
First, an overview of the light in the instrumentation of the optical system components, usually with black nickel and blue as a protective layer of work in order to prevent the light of the chaos reflection, but also good enough anti-corrosion ability. In view of the unsatisfactory anti-corrosion properties of black nickel and blue, they are generally white and rusty in a 24-hour hot and humid test; at the same time, the black nickel coating is not resistant to abrasion and often occurs during transportation and assembly Edge and surface coating abrasion exposure, affect the appearance and corrosion resistance. After more than a year of groping trials, we succeeded in using black chrome plating and proved to be very effective in long-term practical applications. Second, the anti-corrosion properties of black chrome plating Black plating is a mixture containing 75% chromium and 25% chromium oxide, wear-resistant coating can be polished and proved in practice: in a vacuum