Global Patent Index - EP 2953749 A1

EP 2953749 A1 20151216 - METHOD FOR LASER MELTING WITH AT LEAST ONE WORKING LASER BEAM

Title (en)

METHOD FOR LASER MELTING WITH AT LEAST ONE WORKING LASER BEAM

Title (de)

VERFAHREN ZUM LASERSCHMELZEN MIT MINDESTENS EINEM ARBEITSLASERSTRAHL

Title (fr)

PROCÉDÉ DE FUSION LASER AVEC AU MOINS UN FAISCEAU LASER DE TRAVAIL

Publication

EP 2953749 A1 20151216 (DE)

Application

EP 14709233 A 20140306

Priority

  • DE 102013205029 A 20130321
  • EP 2014054308 W 20140306

Abstract (en)

[origin: WO2014146903A1] The invention relates to a method for laser melting, in which a component is produced in layers (15). Serving for this purpose is a bed of powder (11), in which a molten pool (14) is created by a working laser beam (12). According to the invention, it is provided that further auxiliary laser beams (16a, 16b, 16c) are used, set to such a power density that they merely slow down the cooling of the material in one zone (18), but do not cause any renewed melting. In this way, the cooling rate of the microstructure can be set in such a way that an advantageous structural formation develops. This allows for example the mechanical properties of the component produced to be advantageously improved without downstream heat treatments.

IPC 8 full level

B22F 3/105 (2006.01); B29C 67/00 (2006.01)

CPC (source: EP US)

B22F 10/28 (2021.01 - EP US); B22F 10/36 (2021.01 - EP US); B22F 10/362 (2021.01 - EP US); B23K 26/0006 (2013.01 - US); B23K 26/342 (2015.10 - US); B29C 64/153 (2017.07 - EP US); B29C 64/268 (2017.07 - EP US); B22F 10/366 (2021.01 - EP US); B33Y 10/00 (2014.12 - US); Y02P 10/25 (2015.11 - EP US)

Citation (search report)

See references of WO 2014146903A1

Citation (examination)

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)

DE 102013205029 A1 20140925; CN 105188994 A 20151223; CN 105188994 B 20180216; EP 2953749 A1 20151216; US 10549385 B2 20200204; US 2016250717 A1 20160901; WO 2014146903 A1 20140925

DOCDB simple family (application)

DE 102013205029 A 20130321; CN 201480016348 A 20140306; EP 14709233 A 20140306; EP 2014054308 W 20140306; US 201414778524 A 20140306