GB/T 224-2019 Translated English of Chinese Standard. (GBT 224-2019, GB/T224-2019, GBT224-2019): Determination of the depth of decarburization of steelshttps://www.chinesestandard.net, 3 ส.ค. 2019 - 22 หน้า This Standard specifies requirements for sampling, determination method and test report of steel decarburization. This Standard is applicable to measuring depths of decarburization of steel (blank) and its parts. The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. |
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| 3 | |
Scope | 6 |
Terms and definitions | 7 |
Sampling | 9 |
Determination method | 11 |
Test report | 18 |
Annex A Informative Typical structural photo example of decarburization depth determined by metallographic method | 20 |
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accordance with GB/T adopted international standard agreed by parties Averaging method carbide curve of carbon decarburization depth determined decarburization is determined decarburization of steels deepest uniform decarburization depth curve depth of decarburization depth of total Determination of depth electron probe method Electron probe microanalysis ethanol ferrite Figure A.1 functional decarburization glow spectroscopy method hardness value heat treatment Image is zoomed induction furnace Knoop hardness magnification multiple measure decarburization measure depth nitric acid partial decarburization pearlite perpendicular to surface position where hardness position where substrate product standard replace ISO Sample preparation sample surface section of sample serious view field shadow band specified in product spheroidized annealed spring steel standard to replace straight-line method substrate carbon content supplier and purchaser Surface decarburization surface of sample surface Polishing surface surface to position Take average value tool steel total decarburization Typical sampling method Typical structural photo uniform decarburization zone Vickers hardness view field method