C | CHEMISTRY; METALLURGY | |||
Note(s) [2009.01]
| ||||
METALLURGY | ||||
C21 | METALLURGY OF IRON | |||
C21D | MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS (cementation by diffusion processes C23C; surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F 17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B) | |||
Note(s) [2012.01]
| ||||
C21D 1/00 | ||||
C21D 1/02 | • | |||
C21D 1/04 | • with simultaneous application of supersonic waves, magnetic or electric fields [2006.01] | |||
C21D 1/06 | • | |||
C21D 1/08 | • • with flames [2006.01] | |||
C21D 1/09 | • • by direct application of electrical or wave energy; by particle radiation [2006.01] | |||
C21D 1/10 | • • • by electric induction [2006.01] | |||
C21D 1/18 | • | |||
C21D 1/19 | • • | |||
C21D 1/20 | • • • | |||
C21D 1/22 | • • • | |||
C21D 1/25 | • • | |||
C21D 1/26 | • Methods of annealing [2006.01] | |||
C21D 1/28 | • • Normalising [2006.01] | |||
C21D 1/30 | • • Stress-relieving [2006.01] | |||
C21D 1/32 | • • Soft annealing, e.g. spheroidising [2006.01] | |||
C21D 1/34 | • | |||
C21D 1/38 | • • Heating by cathodic discharges [2006.01] | |||
C21D 1/40 | • • Direct resistance heating [2006.01] | |||
C21D 1/42 | • • Induction heating [2006.01] | |||
C21D 1/44 | • • | |||
C21D 1/46 | • • • Salt baths [2006.01] | |||
C21D 1/48 | • • • Metal baths [2006.01] | |||
C21D 1/50 | • • • Oil baths [2006.01] | |||
C21D 1/52 | • • with flames [2006.01] | |||
C21D 1/53 | • • Heating in fluidised beds [2006.01] | |||
C21D 1/54 | • | |||
C21D 1/55 | • Hardenability tests, e.g. end-quench tests [2006.01] | |||
C21D 1/56 | • | |||
C21D 1/58 | • • Oils [2006.01] | |||
C21D 1/60 | • • Aqueous agents [2006.01] | |||
C21D 1/607 | • • Molten salts [2006.01] | |||
C21D 1/613 | • • | |||
C21D 1/62 | • | |||
C21D 1/63 | • • | |||
C21D 1/64 | • • • with circulating liquids [2006.01] | |||
C21D 1/667 | • • | |||
C21D 1/673 | • • | |||
C21D 1/68 | • | |||
C21D 1/70 | • • | |||
C21D 1/72 | • • during chemical change of surfaces [2006.01] | |||
C21D 1/74 | • | |||
C21D 1/76 | • • Adjusting the composition of the atmosphere [2006.01] | |||
C21D 1/767 | • • with forced gas circulation; Reheating thereof [2006.01] | |||
C21D 1/773 | • • under reduced pressure or vacuum [2006.01] | |||
C21D 1/78 | • Combined heat-treatments not provided for above [2006.01] | |||
C21D 1/82 | • | |||
C21D 1/84 | • Controlled slow cooling (cooling-beds for metal rolling B21B 43/00) [2006.01] | |||
C21D 3/00 | ||||
C21D 3/02 | • Extraction of non-metals [2006.01] | |||
C21D 3/04 | • • Decarburising [2006.01] | |||
C21D 3/06 | • • Extraction of hydrogen [2006.01] | |||
C21D 3/08 | • • Extraction of nitrogen [2006.01] | |||
C21D 3/10 | • Furnaces therefor [2006.01] | |||
C21D 5/00 | ||||
C21D 5/02 | • | |||
C21D 5/04 | • | |||
C21D 5/06 | • • Malleabilising [2006.01] | |||
C21D 5/08 | • • • with oxidation of carbon [2006.01] | |||
C21D 5/10 | • • • • in gaseous agents [2006.01] | |||
C21D 5/12 | • • • • in solid agents [2006.01] | |||
C21D 5/14 | • • • Graphitising [2006.01] | |||
C21D 5/16 | • • • • Packing agents [2006.01] | |||
C21D 6/00 | ||||
Note(s) [2006.01]
| ||||
C21D 6/02 | • | |||
C21D 6/04 | • | |||
C21D 7/00 | ||||
C21D 7/02 | • by cold working [2006.01] | |||
C21D 7/04 | • • of the surface [2006.01] | |||
C21D 7/06 | • • • by shot-peening or the like [2006.01] | |||
C21D 7/08 | • • • by burnishing or the like [2006.01] | |||
C21D 7/10 | • • of the whole cross-section, e.g. of concrete reinforcing bars [2006.01] | |||
C21D 7/12 | • • • by expanding tubular bodies [2006.01] | |||
C21D 7/13 | • by hot working [2006.01] | |||
C21D 8/00 | ||||
C21D 8/02 | • | |||
C21D 8/04 | • • to produce plates or strips for deep-drawing [2006.01] | |||
C21D 8/06 | • during manufacturing of rods or wires [2006.01] | |||
C21D 8/08 | • • for concrete reinforcement [2006.01] | |||
C21D 8/10 | • during manufacturing of tubular bodies [2006.01] | |||
C21D 8/12 | • during manufacturing of articles with special electromagnetic properties [2006.01] | |||
C21D 9/00 | ||||
C21D 9/02 | • for springs [2006.01] | |||
C21D 9/04 | • for rails [2006.01] | |||
C21D 9/06 | • • with diminished tendency to become wavy [2006.01] | |||
C21D 9/08 | • for tubular bodies or pipes [2006.01] | |||
C21D 9/10 | • • shotgun barrels [2006.01] | |||
C21D 9/12 | • • barrels for ordnance [2006.01] | |||
C21D 9/14 | • • wear-resistant or pressure-resistant pipes [2006.01] | |||
C21D 9/16 | • for explosive shells [2006.01] | |||
C21D 9/18 | • for knives, scythes, scissors, or like hand cutting tools [2006.01] | |||
C21D 9/20 | • for blades for skates [2006.01] | |||
C21D 9/22 | • for drills; for milling cutters; for machine cutting tools [2006.01] | |||
C21D 9/24 | • for saw blades [2006.01] | |||
C21D 9/26 | • for needles; for teeth for card-clothing [2006.01] | |||
C21D 9/28 | • for plain shafts [2006.01] | |||
C21D 9/30 | • for crankshafts; for camshafts [2006.01] | |||
C21D 9/32 | • for gear wheels, worm wheels, or the like [2006.01] | |||
C21D 9/34 | • for tyres; for rims [2006.01] | |||
C21D 9/36 | • for balls; for rollers [2006.01] | |||
C21D 9/38 | • for roll bodies [2006.01] | |||
C21D 9/40 | • for rings; for bearing races [2006.01] | |||
C21D 9/42 | • for armour plate [2006.01] | |||
C21D 9/44 | • for equipment for lining mine shafts, e.g. segments, rings or props [2006.01] | |||
C21D 9/46 | • for sheet metals [2006.01] | |||
C21D 9/48 | • • deep-drawing sheets [2006.01] | |||
C21D 9/50 | • for welded joints [2006.01] | |||
C21D 9/52 | • for wires; for strips [2006.01] | |||
C21D 9/54 | • • Furnaces for treating strips or wire [2006.01] | |||
C21D 9/56 | • • • Continuous furnaces for strip or wire [2006.01] | |||
C21D 9/567 | • • • • with heating in fluidised beds [2006.01] | |||
C21D 9/573 | • • • • with cooling [2006.01] | |||
C21D 9/58 | • • • • with heating by baths [2006.01] | |||
C21D 9/60 | • • • • with induction heating [2006.01] | |||
C21D 9/62 | • • • • with direct resistance heating [2006.01] | |||
C21D 9/63 | • • • • the strip being supported by a cushion of gas [2006.01] | |||
C21D 9/64 | • • • Patenting furnaces [2006.01] | |||
C21D 9/66 | • • • Tower-type furnaces [2006.01] | |||
C21D 9/663 | • • • Bell-type furnaces [2006.01] | |||
C21D 9/665 | • • • • inverted or side-facing [2006.01] | |||
C21D 9/667 | • • • • Multi-station furnaces [2006.01] | |||
C21D 9/67 | • • • • • adapted for treating the charge in vacuum or special atmosphere [2006.01] | |||
C21D 9/673 | • • • • Details, accessories, or equipment peculiar to bell-type furnaces [2006.01] | |||
C21D 9/675 | • • • • Arrangements of charging or discharging devices [2006.01] | |||
C21D 9/677 | • • • • Arrangements of heating devices [2006.01] | |||
C21D 9/68 | • • • Furnace coilers; Hot coilers (cold coilers B21C 47/00) [2006.01] | |||
C21D 9/70 | • Furnaces for ingots, i.e. soaking pits [2006.01] | |||
C21D 10/00 | ||||
C21D 11/00 | Process control or regulation for heat treatments [2006.01] |