EP 3774123 A1 20210217 - METHOD FOR PRODUCING A COILED BODY
Title (en)
METHOD FOR PRODUCING A COILED BODY
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES GEWENDELTEN KÖRPERS
Title (fr)
PROCÉDÉ DE FABRICATION D'UN CORPS SPIRALÉ
Publication
Application
Priority
- DE 102018205588 A 20180412
- EP 2019059356 W 20190411
Abstract (en)
[origin: WO2019197584A1] The invention relates to a method for producing a hollow, coiled, electrically conductive body (1), wherein: first a coiled core (8) is produced from a core material that can be liquefied or vaporised under the influence of heat, and then coated with a first powder layer (3, 3') of an at least partially electrically conductive first powder by means of a powder-coating method; and the coiled core with the first powder layer is heated to a first temperature at which the core is liquefied or transforms into a gaseous form and the first powder layer is at least partially solidified in a porous form, wherein the core material is removed from the space surrounded by the powder coating and, after the removal of the core material from the space surrounded by the first powder layer, the first powder layer is further sintered, in particular such that the first powder layer is heated to a second temperature which is higher than the first temperature. The invention also relates to the coiled body.
IPC 8 full level
B22F 3/10 (2006.01); B22F 5/00 (2006.01); B22F 5/10 (2006.01); B22F 7/06 (2006.01)
CPC (source: EP US)
B22F 3/1017 (2013.01 - US); B22F 5/106 (2013.01 - EP US); B22F 7/06 (2013.01 - EP); B22F 3/10 (2013.01 - EP); B22F 3/1021 (2013.01 - EP); B22F 2005/004 (2013.01 - EP US); B22F 2005/103 (2013.01 - EP US); B22F 2998/10 (2013.01 - US); B22F 2999/00 (2013.01 - EP US); C22C 1/0425 (2013.01 - EP); C22C 1/0466 (2013.01 - EP)
Citation (search report)
See references of WO 2019197584A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019197584 A1 20191017; CN 112004626 A 20201127; CN 112004626 B 20231208; DE 102018205588 A1 20191017; EP 3774123 A1 20210217; US 2021121960 A1 20210429
DOCDB simple family (application)
EP 2019059356 W 20190411; CN 201980025300 A 20190411; DE 102018205588 A 20180412; EP 19717481 A 20190411; US 201917045972 A 20190411