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See Chinese contents: GB/T 41706-2022 GB/T 41706-2022: Metallic powders - Test method for determination of non-metallic inclusions in metal powders for powder forging
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 ( and lt;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
