GB/T 33522-2017 Translated English of Chinese Standard. (GBT 33522-2017, GB/T33522-2017, GBT33522-2017): Carburizing Bearing Steel Forgings - Technical Specificationshttps://www.chinesestandard.net, 2. 6. 2018 - Počet stran: 14 This Standard specifies the ordering requirements, manufacturing process, technical requirements, inspection rules and test methods, acceptance and quality certificate, mark and package of carburizing bearing steel forgings. This Standard is applicable to the ordering, manufacturing and inspection of high quality carburizing bearing steel forgings used for manufacturing rolling bearing rings and rolling elements. |
Obsah
Foreword | 5 |
Technical Requirements | 6 |
Inspection Rules and Test Methods | 9 |
Acceptance and Quality Certificate | 11 |
Appendix A Informative Supplementary Technical Requirements | 13 |
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acid aqueous solution Allowable Deviation Allowances and Tolerances Analysis results carbon deoxidation VCD chemical compositions 6.1.1 Chemical Compositions Mass Coarse Coarse Coarse compositions 5.1.1 Compositions Mass Fraction electrode electrolytic finished forgings finished products forging and uniform forging ratio forgings are forged Forgings on Hammer Grain size greater than 229HBW Hardness test Heat treatment hydrochloric acid aqueous identification number implemented inspection and non-metallic Inspection Rules inspectors JB/T Machining Allowances Macrostructure inspection Metallurgical structure 5.3.1 Non-destructive test non-metallic inclusion rating number of forgings Open Die Forgings permissible deviation phosphorus product quality provisions of GB/T provisions of Table purchaser required Quality Certificate renormalized required supplementary inspections Rules and Test sample and analyze sample preparation method sampling and sample sampling quantities smelting furnace number Smelting method specified in Table Steel Open supplementary technical requirements supplier shall analyze supplier shall provide surface defects tempered or annealed Test Methods Tolerances for Steel ultrasonic inspection Ultrasonic test