B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
  
SHAPING
 B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (casting, powder metallurgy B22; shearing B23D; working of metal by the action of a high concentration of electric current B23H; soldering, welding, flame-cutting B23K; other working of metal B23P; punching sheet material in general B26F; processes for changing of physical properties of metals C21D, C22F; electroforming C25D 1/00)
 B21

Note(s)

  1. This class does not cover:
  2. Processes of a kind covered by this class but applied to non-metallic materials are classified in this class if they are applicable to metal and cannot be classified fully in another class.
 B21J
FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P 9/00; compacting surfaces by blasting with particulate material B24C 1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27)
 B21J
Subclass index
PREPARING METAL STOCK 1/00
FORGING; HAMMERING; PRESSING
General methods, equipment therefor 5/00
Machines, presses, hammers 7/00 - 13/00
Lubrication 3/00
Furnaces 17/00
RIVETING 15/00
OTHER BLACKSMITHS' REQUISITES 19/00
P:0 B21J 1/00
Preparing metal stock
P:20 B21J 3/00
Lubricating during forging or pressing (lubricating in general F16N)
P:10 B21J 5/00
Methods for forging, hammering, or pressing (for working sheet metal or metal tubes, rods, or profiles B21D; for working wire B21F); Special equipment or accessories therefor
 B21J 5/06
·  for performing particular operations (making screw-thread by forging, pressing, or hammering B21K)
P:40 B21J 7/00
Hammers; Forging machines with hammers or die jaws acting by impact (hand hammers B25D; electrical features section H)
P:50 B21J 9/00
Forging presses
P:30 B21J 11/00
Forging hammers combined with forging presses; Forging machines with provision for hammering and pressing
P:60 B21J 13/00
Details of machines for forging, pressing, or hammering
 B21J 13/02
·  Dies or mountings therefor  [2]
P:70 B21J 15/00
Riveting
P:80 B21J 17/00
Forge furnaces (furnaces for heat treatment C21D 9/00; furnaces in general F27)
P:90 B21J 19/00
Blacksmiths' requisites not otherwise provided for