标准摘要
[中文适用范围]： ISO 27831-2 规定了非铁金属及其合金表面在任何制造、存储或服务阶段去除无关或不必要沉积物或其他材料，以及为这些表面进行进一步处理的处理过程。它不涵盖与操作服务期间积聚的厚重油、油脂或污垢的初步去除、焊接准备或电气接触清洁相关的清洁操作。然而，用户可自行决定使用本部分包含的许多此类操作。本部分涵盖为以下表面涂层制备金属表面所需的过程：电镀金属涂层；自催化金属涂层（自催化和置换型）；转化涂层；阳极氧化涂层；热浸涂层；喷涂金属涂层；玻璃搪瓷涂层；通过物理气相沉积铝和镉产生的涂层；粉末涂层。本部分描述了执行以下处理的过程：脱脂；除鳞；酸洗；蚀刻；除锈；化学平滑；化学抛光；电解抛光；氟阳极氧化（用于清洁镁合金）。 [外文原描述]： ISO 27831-2:2008 specifies processes for the cleaning of the surfaces of non-ferrous metals and their alloys to remove any irrelevant or unwanted deposits or other material at any stage of manufacture, storage or service and for the preparation of these surfaces for further treatment. It does not cover cleaning operations associated with the preliminary removal of heavy deposits of oil, grease or dirt accumulated during operational service, preparations for welding or the cleaning of electrical contacts. It covers processes which are needed for the preparation of metal surfaces prior to the application of the following surface coatings: electrodeposited metal coatings; autocatalytic metal coatings (autocatalytic and displacement types); conversion coatings; anodic oxidation coatings; hot-dipped coatings; sprayed metal coatings; coatings produced by vitreous enamelling; coatings produced by physical vapour deposition of aluminium and cadmium; powder coatings. It describes processes for carrying out the following treatments: degreasing; descaling; pickling; etching; de-rusting; chemical smoothing; chemical polishing; electrobrightening; electropolishing; fluoride anodizing (for cleaning magnesium alloys). It relates the processes described above to the following metals: aluminium and aluminium alloys; copper and copper alloys; nickel alloys; titanium and titanium alloys; magnesium alloys; zinc-based alloys; tin and tin alloys; tungsten alloys; lead and lead alloys; zinc-, cadmium-, chromium- and gold-coated items.
英文名称Metallic and other inorganic coatings — Cleaning and preparation of metal surfaces — Part 2: Non-ferrous metals and alloys