1. Theme and Scope of Application This standard specifies the relevant technical requirements for copper electroplated coatings used in engineering on metal substrates. This standard is applicable to copper electroplating coatings for engineering purposes, such as copper electroplating coatings that act as a barrier layer on the surface of heat treated parts; copper electroplating coatings that require wear reduction during wire drawing processing; A copper electroplating layer used as the bottom layer of a tin coating to prevent the diffusion of the base metal. This standard is not applicable to copper electroplating coatings and copper substrates for decorative purposes, as well as copper coatings for electroforming. 2. Reference standard "GB 1238 Metal Coatings and Chemical Treatment Representation Methods GB 2423.28 Basic Environmental Testing Procedures for Electrical and Electronic Products Test T; Tin Welding Test Method GB 4955 Determination of Metal Coating Thickness Anodic Dissolution Coulomb Method GB 4956 Measurement of Non magnetic Coating Thickness on Magnetic Metal Substrates Magnetic Method GB 5270 Metal Coating on Metal Substrates (Electrodeposited and Chemical Deposited Layers) Adhesion strength test method GB 5931 Thickness test method for metal coatings and chemically treated coatings on light industrial products β X-ray backscatter method GB 6462 Microscopic measurement method for cross-sectional thickness of metal and oxide coatings GB 6463 Evaluation of measurement methods for thickness of metal and other inorganic coatings GB 12609 Electrodeposited metal coatings and related precision finishing Sampling inspection procedures GB 12334 Definitions and general rules for thickness measurement of metal and other inorganic coatings Terminology 3 The plating on certain surfaces that have been or are to be plated on the main surface products is important for the appearance and/or usability of the products. 3.2 Minimum Local Thickness The minimum value of the local thickness measured on the main surface of a workpiece, also known as the minimum friction. The representation method for copper coating and related treatment is shown in GB 1238
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