5 records  
Number  Name Description (tasks and duties) Micro Groups 

72620

AnnealerHeats metal objects in furnace and cools them at predetermined rate to relieve internal stresses, restore ductility and refine grain structure. Display Titles

72630

HardenerHardens steel objects throughout by heating in furnace and quenching them. Display Titles

72640

Case-HardenerImparts hard skin and tough, ductile core to steel objects by treating them with chemicals, heating and quenching or cooling them. Display Titles

72650

TempererReheats hardened steel objects in furnace and quenches them to relieve stresses caused in hardening process and impart toughness. Display Titles

72690

Other Metal Annealers, Temperers and Case-HardenersThis group includes metal annealers, temperers and case hardeners not elsewhere classified, for example those who assist heat treaters by loading furnaces, packing metal objects in chemicals, preparing quenching media, and quenching metal objects. Display Titles
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