Title:
SELECTIVE LASER SOLIDIFICATION APPARATUS AND METHOD
Document Type and Number:
WIPO Patent Application WO/2014/125258
Kind Code:
A3
Abstract:
This invention concerns a selective laser solidification apparatus. The apparatus comprises a powder bed (104) onto which a powder layer can be deposited, a gas flow unit for passing a flow of gas over the powder bed (104) along a gas flow direction (118), a laser scanning unit (106) for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form one or more objects and a processing unit (131). The processing unit 131 selects a scanning sequence of the laser beam based on the gas flow direction (118). The invention also concerns a method for selecting a scanning sequence.
Inventors:
FERRAR BEN IAN (GB)
Application Number:
PCT/GB2014/050389
Publication Date:
October 16, 2014
Filing Date:
February 11, 2014
Export Citation:
Assignee:
RENISHAW PLC (GB)
International Classes:
B22F3/105; B29C67/00
Domestic Patent References:
| WO1992008592A1 | 1992-05-29 |
Foreign References:
| EP2492084A1 | 2012-08-29 | |||
| US5352405A | 1994-10-04 | |||
| DE10208150A1 | 2002-09-12 |
Other References:
FERRAR B ET AL: "Gas flow effects on selective laser melting (SLM) manufacturing performance", JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, ELSEVIER, NL, vol. 212, no. 2, 26 September 2011 (2011-09-26), pages 355 - 364, XP028119930, ISSN: 0924-0136, [retrieved on 20111002], DOI: 10.1016/J.JMATPROTEC.2011.09.020
Attorney, Agent or Firm:
MATTHEWS, Paul et al. (Patent DepartmentNew Mills,Wotton-under-Edge, Gloucestershire GL12 8JR, GB)
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