|  | B |
SECTION B — PERFORMING OPERATIONS

SHAPING

|  | B22 |
CASTING; POWDER METALLURGY

|  | B22C |
FOUNDRY MOULDING (moulding refractory materials in general Fulltext... Hierarchy... Expanded...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 (metallurgical processing, selection of substances to be added to metal Fulltext... Hierarchy... Expanded...C21, Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...B22D 23/08; making ceramics by compacting or sintering Fulltext... Hierarchy... Expanded...C04B, e.g. Fulltext... Hierarchy... Expanded...C04B 35/64; making alloys by compacting or sintering Fulltext... Hierarchy... Expanded...C22C 1/04, Fulltext... Hierarchy... Expanded...C22C 33/02)

|  | B22F |
Note(s) The term "metallic powder" is to be understood as covering powders containing a substantial proportion of non-metallic material. The term "powder" is not intended to exclude somewhat larger particles which behave in a similar way.