ISO 12686:1999 PDF

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.

ISO 12686:1999 Referenced Document

ISO 2194:1991 Industrial screens; woven wire cloth, perforated plate and electroformed sheet; designation and nominal sizes of openings
ISO 3310-1:1990 Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
ISO 3453:1984 Non-destructive testing; Liquid penetrant inspection; Means of verification
ISO 565:1990 Test sieves; metal wire cloth, perforated metal plate and electroformed sheet; nominal sizes of openings
ISO 6933:1986 Railway rolling stock material; magnetic particle acceptance testing

1999 ISO 12686:1999 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