ISO 4042:2022 紧固件 电镀涂层系统
标准编号：ISO 4042:2022
中文名称：紧固件 电镀涂层系统
英文名称：Fasteners — Electroplated coating systems
发布日期：2022-06
标准范围
本文件规定了具有电镀涂层和涂层系统的钢紧固件的要求。与尺寸特性相关的要求也适用于铜或铜合金制成的紧固件。它还规定了将氢脆风险降至最低的要求和建议，见4.4和附录B它主要适用于具有锌和锌合金涂层系统（锌、锌镍、锌铁）和镉的紧固件，主要用于防腐和其他功能特性:—？有或没有转化膜，—？带或不带密封剂，—？有无面漆，—？有或没有润滑剂（整体润滑剂和/或随后添加的润滑剂）。其他电镀涂层和涂层系统规范（锡、锡锌、铜锡、铜银、铜、银、铜-锌、镍、镍铬、铜镍、铜镍铬）仅用于与ISO？紧固件相关的尺寸要求公制螺纹。本文件对电镀紧固件的要求优先于其他文件处理电镀。本文件适用于ISO公制螺纹的钢螺栓、螺钉、螺柱和螺母，适用于其他螺纹紧固件和非螺纹紧固件，如垫圈、销、夹子和铆钉。注意电镀也适用于不锈钢紧固件，例如用于润滑以避免磨损。涂层紧固件的设计和组装信息见附录A.本文件未规定焊接性或可涂漆性等特性的要求。
This document specifies requirements for steel fasteners with electroplated coatings and coating systems. The requirements related to dimensional properties also apply to fasteners made of copper or copper alloys.It also specifies requirements and gives recommendations to minimize the risk of hydrogen embrittlement, see 4.4 and Annex B.It mainly applies to fasteners with zinc and zinc alloy coating systems (zinc, zinc-nickel, zinc-iron) and cadmium, primarily intended for corrosion protection and other functional properties:— with or without conversion coating,— with or without sealant,— with or without top coat,— with or without lubricant (integral lubricant and/or subsequently added lubricant).Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, copper-silver, copper, silver, copper-zinc, nickel, nickel-chromium, copper-nickel, copper-nickel-chromium) are included in this document only for dimensional requirements related to fasteners with ISO metric threads.The requirements of this document for electroplated fasteners take precedence over other documents dealing with electroplating.This document applies to steel bolts, screws, studs and nuts with ISO metric thread, to other threaded fasteners and to non-threaded fasteners such as washers, pins, clips and rivets.NOTE Electroplating is also applied to stainless steel fasteners, e.g. for the purpose of lubrication in order to avoid galling.Information for design and assembly of coated fasteners is given in Annex A.This document does not specify requirements for properties such as weldability or paintability.
标准预览图
