Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: METALLURGY OF IRON
Subclass:: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING

Related Keywords

ANNEALING of metal articlesFURNACES for heat treatment of metals or particular articlesHARDENING of metal articlesHEAT TREATMENT of metal articlesgeneral methods of or devices for heat treatment of NON-FERROUS metals or alloysTEMPERING of metal articles

22 direct subcodes

Child Classifications

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C21D 9/02 for springs
C21D 9/04 for rails
C21D 9/08 for tubular bodies or pipes
C21D 9/16 for explosive shells
C21D 9/18 for knives, scythes, scissors, or like hand cutting tools
C21D 9/2 for blades for skates
C21D 9/22 for drills; for milling cutters; for machine cutting tools
C21D 9/24 for saw blades
C21D 9/26 for needles; for teeth for card-clothing
C21D 9/28 for plain shafts
C21D 9/3 for crankshafts; for camshafts
C21D 9/32 for gear wheels, worm wheels, or the like
C21D 9/34 for tyres; for rims
C21D 9/36 for balls; for rollers
C21D 9/38 for roll bodies
C21D 9/4 for rings; for bearing races
C21D 9/42 for armour plate
C21D 9/44 for equipment for lining mine shafts, e.g. segments, rings or props
C21D 9/46 for sheet metals
C21D 9/5 for welded joints