B
SECTION B — PERFORMING OPERATIONS
  
SHAPING
 B22
CASTING; POWDER METALLURGY
 B22C
FOUNDRY MOULDING (moulding refractory materials in general B28B)
 B22C

Note(s)

This sub-class deals with the making of moulds for casting metals or of other refractory moulds. It embraces selection and preparation of materials therefor and also the necessary patterns, processes, machines, accessory devices or tools.


 B22D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (casting or moulding specially adapted for plastics B29; metallurgical processing, selection of substances to be added to metal C21, C22)
 B22D

Note(s)

In this sub-class any material to be cast is referred to as metal.


 B22F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; OBTAINING METALLIC POWDER, NOT OTHERWISE PROVIDED FOR (processes or apparatus for obtaining metallic powder, covered by a single other sub-class, see the relevant sub-class, e.g. obtaining by spraying molten metal B22D 23/08; moulding articles from wood particles B29J; making ceramics by compacting or sintering C04B, e.g. C04B 35/64; making alloys by compacting or sintering C22C 1/04, C22C 33/02)
 B22F

Note(s)

  1. The term "metallic powder" is to be understood as covering powders containing a substantial proportion of non-metallic material.
  2. The term "powder" is not intended to exclude somewhat larger particles which or behave in a way similar.