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一、前言ＧＢ/Ｔ13911-1992《金属镀覆和化学处理表示方法》规定了金属镀覆和化学处理的表示方法,适用于金属和非金属制件上进行电镀、化学镀、化学处理和电化学处理的表示。对金属而言,若表面防护不当,就会使金属表面被锈蚀。金属的锈蚀在形式上有表面均匀锈蚀,表面局部锈蚀,?
First, the preface GB / T13911-1992 “metal plating and chemical processing that” provides for the representation of metal plating and chemical treatment, suitable for metal and non-metallic parts plating, electroless plating, chemical treatment and electrochemical Representation of the process. Metal, if the surface protection is not properly, it will make the metal surface is rust. Metal rust in the form of uniform surface rust, the surface of the local corrosion,?