B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
Introduced: September 1968
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
Description
B21K covers mechanical metal-working processes that form metal products through forging, pressing, or similar deformation techniques without substantial material removal. This includes manufacturing discrete metal articles such as rivets, bolts, horseshoes, wheels, and other components shaped by impact, pressure, or combined force. The classification encompasses both the machinery and methods for cold or hot forming operations, as well as finishing steps integral to the forging or pressing process. Adjacent classes (B21C-B21F) address continuous or specialized metal-forming operations, while B21H-B21J cover metal-cutting and surface-treatment activities excluded from this subclass.
Related Keywords
16 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B21K 1/00 Making machine elements
- B21K 11/00 Making cutlery wares; Making garden tools or the like
- B21K 13/00 Making locksmiths' goods, e.g. handles for cases
- B21K 15/00 Making blacksmiths' goods
- B21K 17/00 Making sport articles, e.g. skates
- B21K 19/00 Making articles for agricultural machinery
- B21K 21/00 Making hollow articles not covered by any single one of groups
- B21K 23/00 Making other articles
- B21K 25/00 Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components
- B21K 27/00 Handling devices, e.g. for feeding, aligning, discharging; Cutting-off means; Arrangement thereof
- B21K 29/00 Arrangements for heating or cooling during processing
- B21K 3/00 Making engine or like machine parts not covered by; Making propellers or the like
- B21K 31/00 Control devices specially adapted for positioning tool carriers
- B21K 5/00 Making tools or tool parts, e.g. pliers
- B21K 7/00 Making railway appurtenances; Making vehicle parts
- B21K 9/00 Reconditioning railroad accessories, e.g. rails