ISO 12686 pdf download

ISO 12686 pdf download.Metallic and other inorganic coatings — Automated controlled shot-peening of metallic articles prior to nickel, autocatalytic nickel or chromium plating, or as a final finish 1 Scope This International Standard describes the requirements for automated, controlled shot-peening of metallic articles prior to electrolytic or autocatalytic deposition of nickel or chromium, or as a final finish, using shot made of cast steel, conditioned cut wire, ceramic shot or glass beads. The process is applicable to those materials on which test work has shown it to be beneficial within given intensity ranges. It is usually not suitable for brittle materials. Hand- peening and rotary flap-peening are specifically excluded. Shot-peening induces residual compressive stresses in the surface and near surface layers of metallic articles, and changes the surface microstructure (including phase transformation), thereby controlling or limiting the reduction in fatigue properties that occurs from nickel or chromium plating of the article, or increasing the fatigue properties of unplated articles. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards.ISO 565:1 990, Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings. ISO 21 94:1 991 , Industrial screens — Woven wire cloth, perforated plate and electroformed sheet — Designation and nominal sizes of openings. ISO 331 0-1 :1 990, Test sieves — Technical requirements and testing — Part 1 : Test sieves of metal wire cloth. ISO 3453:1 984, Non-destructive testing — Liquid penetrant inspection — Means of verification. ISO 6933:1 986, Railway rolling stock material — Magnetic particle acceptance testing. 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 Almen strip UNS G1 0700 carbon steel specimens that are used to calibrate the energy of a shot-peening stream (see Figure 1 ) 3.2 Almen strip holding fixture fixture for holding Almen strips in suitable locations that represent the position and angular orientation of the...