ISO 12686-1999 金属和其他无机覆盖层 金属件电镀镍、自催化镀镍或电镀铬或作为最后精饰前的自动控制喷丸硬化

标准号：ISO 12686-1999
中文标准名称：金属和其他无机覆盖层 金属件电镀镍、自催化镀镍或电镀铬或作为*后精饰前的自动控制喷丸硬化
英文标准名称：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
标准类型：A29
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：A29
国际标准分类号：25.220.40
适用范围：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.