GB/T 14991-2016 Translated English of Chinese Standard (GBT 14991-2016, GB/T14991-2016, GBT14991-2016): Deformable permanent-magnet steels
https://www.chinesestandard.net, 27 mag 2017 - 12 pagine
This Standard specifies the designations, dimensions, shapes and tolerances, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of deformable permanent-magnet steels. This Standard is applicable to the deformable permanent-magnet cold rolled strips, hot rolled (forged) bars and flat materials used to manufacture permanent magnets.
Annex A Informative Recommended heat treatment system for permanentmagnet steel samples
Annex B Normative Preparation and test for permanentmagnet steel sample
100°C boiling water 5min aging is greater allowable deviation Width analysis of iron bars and flat batch boiling water aging Br·Hc chemical analysis Chemical composition cold rolled strip content GB/T Deformable permanent-magnet steels delivered in straight delivery status Determination deviation allowable Length deviation mm Thickness deviation shall comply Diameter deviation allowable Diameter Diameter deviation Finished product flat materials Furnace GB/T greater than 5h heat treatment system Hot rolled flat Hot rolled forged induction intensity inspection and acceptance Inspection item inspection piece roll insulate for 10min magnetic properties marks and quality Method after Combustion Methods for chemical Normal fire oil quenching permanent magnet permanent-magnet steel samples Preheat at 500°C properties of permanent-magnet provisions of Table quality certificate Recommended heat treatment residual magnetic sampling quantity Smelting method Spectrophotometric Method GB/T Standard steel and alloy Steel and Alloy-Determination supplier Surface quality system for permanent-magnet Test method GB/T Thickness allowable deviation unqualified Width allowable deviation YB/T