|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

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 (casting or moulding specially adapted for plastics Fulltext... Hierarchy... Expanded...B29; 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; MAKING METALLIC POWDER (processes or devices for granulating materials in general Fulltext... Hierarchy... Expanded...B01J 2/00; making ceramics by compacting or sintering Fulltext... Hierarchy... Expanded...C04B, e.g. Fulltext... Hierarchy... Expanded...C04B 35/64; for the production of metals as such, see class Fulltext... Hierarchy... Expanded...C22; reduction or decomposition of metal compounds in general Fulltext... Hierarchy... Expanded...C22B; making alloys by powder metallurgy Fulltext... Hierarchy... Expanded...C22C; electrolytic production of metal powder Fulltext... Hierarchy... Expanded...C25C 5/00)

|  | 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 are worked, obtained or behave in a manner similar to powder, e.g. fibres. The production of metal powder is classified in this sub-class insofar as the invention relates to the preparation of powder with specific physical characteristics. [3]