GB/T 41706-2022 Translated English of Chinese Standard (GB/T 41706-2022, GBT41706-2022): Metallic powders - Test method for determination of non-metallic inclusions in metal powders for powder forging [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 22 Haz 2023 - 10 sayfa This document specifies a metallographic method for determining the content of non-metallic inclusions in metallic powders by using powder-forged samples. This measurement method requires that the powder-forged sample has as little lateral flow as possible (<1%) during forging, and requires that the central area of the powder-forged sample has no visible pores under the magnification of 100¡Á. This document applies to the detection of non-metallic inclusion content in powder-forged parts. In parts with a large amount of lateral flow of material, the separation distance between nearest neighbors needs to be adjusted, or the size of inclusions that nee |
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544 nm green applicable ASTM E3 central area concept of nearest-neighbor content of non-metallic content of powders Description of indexing Detection of non-metallic determination of non-metallic flow as possible grinding and polishing guide for preparation inclusion cluster inclusion particles inclusions in metal inclusions larger indexing number individual inclusion ISO/TR less than 30 little lateral flow magnification of 100 maximum Feret diameter measurement Metal Materials metallic inclusions Metallic powders metallographic method for determination method requires microscope nearest neighbor separation nm green filter non-metallic inclusion content Nonferrous Metals normative reference number of inclusion numerical aperture objective lens polished sample polished surface powder forging powder metallurgy powder-forged sample powders for powder precision and deviation presentation of precision principle of nearest referenced documents represent the central Residual porosity safety issues Sample preparation Schematic diagram separation distance shown in Figure Sintered size of inclusions Standard guide Terms and definitions Test method wavelength of light