Heat treatment

CCHEMISTRY METALLURGY C21Iron metallurgy C21DMODIFYING 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

C21D9/00Heat treatment

C21D9/0006Details, accessories not peculiar to any of the following furnaces C21D9/0012Rolls; Roll arrangements C21D9/0018for charging, discharging or manipulation of charge C21D9/0025Supports; Baskets; Containers; Covers C21D9/0031Rotary furnaces with horizontal or slightly inclined axis C21D9/0037Rotary furnaces with vertical axis; Furnaces with rotating floor C21D9/0043Muffle furnaces; Retort furnaces C21D9/005Furnaces in which the charge is moving up or down C21D9/0056Furnaces through which the charge is moved in a horizontal straight path C21D9/0062Heat-treating apparatus with a cooling or quenching zone C21D9/0068for particular articles not mentioned below C21D9/0075for rods of limited length C21D9/0081for slabs; for billets C21D9/0087for chains, for chain links C21D9/0093for screws; for bolts C21D9/02for springs C21D9/04for rails C21D9/06with diminished tendency to become wavy C21D9/08for tubular bodies or pipes C21D9/085Cooling or quenching C21D9/10shotgun barrels C21D9/12barrels for ordnance C21D9/14wear- or pressure-resistant pipes C21D9/16for explosive shells C21D9/18for knives, scythes, scissors, or like hand cutting tools C21D9/20for blades for skates C21D9/22for drills for milling cutters for machine cutting tools C21D9/24for saw blades C21D9/26for needles for teeth for card-clothing C21D9/28for plain shafts C21D9/30for crankshafts for camshafts C21D9/32for gear wheels, worm wheels, or the like C21D9/34for tyres for rims C21D9/36for balls for rollers C21D9/38for roll bodies C21D9/40for rings for bearing races C21D9/42for armour plate C21D9/44for equipment for lining mine shafts C21D9/46for sheet metals C21D9/48deep-drawing sheets C21D9/50for welded joints C21D9/505Cooling thereof C21D9/52for wires for strips; for rods of unlimited length C21D9/525for wire, for rods C21D9/54Furnaces for treating strips or wire C21D9/56Continuous furnaces for strip or wire C21D9/561with a controlled atmosphere or vacuum C21D9/562Details C21D9/563Rolls; Drums; Roll arrangements C21D9/564Tension control C21D9/565Sealing arrangements C21D9/567with heating in fluidised beds C21D9/573with cooling C21D9/5732of wires; of rods C21D9/5735Details C21D9/5737Rolls; Drums; Roll arrangements C21D9/58with heating by baths C21D9/60with induction heating C21D9/62with direct resistance heating C21D9/63the strip being supported by a cushion of gas C21D9/64Patenting furnaces C21D9/66Tower-type furnaces C21D9/663Bell-type furnaces C21D9/665inverted or side-facing C21D9/667Multi-station furnaces C21D9/67adapted for treating the charge in vacuum or special atmosphere C21D9/673Details, accessories, or equipment peculiar to bell-type furnaces C21D9/675Arrangements of charging or discharging devices C21D9/677Arrangements of heating devices C21D9/68Furnace coilers hot coilers C21D9/70Furnaces for ingots