标准摘要
[中文适用范围]： 本国际标准规定了通过渗锌工艺应用于黑色金属材料的六类锌涂层的最小厚度要求，以防止腐蚀和磨损。 本国际标准没有规定渗锌前母材表面状况（表面光洁度或粗糙度）的要求。 国际标准不涵盖渗锌部件的后处理（转换层）、后续处理或有机涂层（复式系统）。 注 1：关于后处理的一般信息，参见附录 C 和附录 D。 本国际标准不适用于有特定标准且存在附加要求或与本国际标准不同的要求的渗锌产品（例如紧固件、管道）。 要求可能适用。 注 2：个别产品标准可能会按编号引用本标准的涂层或将其与产品特定的修改结合起来。 [外文原描述]： ISO 17668:2016 specifies minimum thickness requirements for six classes of zinc diffusion layers applied to ferrous products by the sherardizing process for the purpose of protection against corrosion and wear. ISO 17668:2016 does not specify any requirements for the surface condition (finish or roughness) of the basis material before sherardizing. Post-treatments (conversion coatings), after-treatments or organic over-coatings (Duplex) of sherardized articles are not in the scope of this International Standard. NOTE 1 For general information about post-treatments, see Annex C and Annex D. ISO 17668:2016 does not apply to sherardized products (e.g. fasteners, tubes) for which specific standards exist and which might include additional requirements or requirements which are different from those of this International Standard. NOTE 2 Individual product standards can incorporate this International Standard for the coating by quoting its number, or can incorporate it with modification specific to the product.
英文名称Zinc diffusion coatings on ferrous products — Sherardizing — Specification