Global Patent Index - EP 3552732 A1

EP 3552732 A1 20191016 - WAXLESS PRECISION CASTING PROCESS

Title (en)

WAXLESS PRECISION CASTING PROCESS

Title (de)

WACHSFREIES PRÄZISIONSGUSSVERFAHREN

Title (fr)

PROCESSUS DE COULÉE DE PRÉCISION SANS CIRE

Publication

EP 3552732 A1 20191016 (EN)

Application

EP 19172041 A 20101208

Priority

  • US 26771709 P 20091208
  • US 96162110 A 20101207
  • EP 10793385 A 20101208
  • US 2010059377 W 20101208

Abstract (en)

Alloy products are produced with a waxless casting process. A model of a ceramic casting vessel (34) defining a desired product shape is digitally divided into sections (10, 40, 42). Each section is translated into a soft alloy mater tool (14) including precision inserts (20) where needed for fine detail. A flexible mold (24) is cast from each master tool, and a section of the ceramic casting vessel is cast from the respective flexible mold. The vessel sections are assembled by aligning cooperating precision features (58, 60) cast directly into each section and the alloy part is cast therein. No wax or wax pattern tooling is needed to produce the cast alloy product. Engineered surface features (54) may be included on both the interior and exterior surfaces of the shell sections.

IPC 8 full level

B22C 9/02 (2006.01); B22C 9/10 (2006.01); B22C 9/24 (2006.01)

CPC (source: EP US)

B22C 7/06 (2013.01 - EP US); B22C 9/02 (2013.01 - EP US); B22C 9/04 (2013.01 - US); B22C 9/10 (2013.01 - US); B22C 9/103 (2013.01 - EP US); B22C 9/22 (2013.01 - US); B22C 9/24 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

  • [A] US 3965963 A 19760629 - PHIPPS CHARLES M, et al
  • [A] US 2003235272 A1 20031225 - APPLEBY MICHAEL [US], et al
  • [A] US 2006065383 A1 20060330 - ORTIZ MILTON [US], et al
  • [A] WO 0112361 A2 20010222 - HOWMET RES CORP [US]
  • [A] GB 1267247 A 19720315
  • [A] CHEAH C M ET AL: "Rapid prototyping and tooling techniques: a review of applications for rapid investment casting", THE INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, SPRINGER, BERLIN, DE, vol. 25, no. 3-4, 1 February 2005 (2005-02-01), pages 308 - 320, XP019380139, ISSN: 1433-3015, DOI: 10.1007/S00170-003-1840-6
  • [A] CHUA C K ET AL: "Rapid tooling technology. Part 1. A comparative study", THE INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, SPRINGER, BERLIN, DE, vol. 15, no. 8, 1 July 1999 (1999-07-01), pages 604 - 608, XP019700736, ISSN: 1433-3015
  • [A] ALTAN ET AL: "Manufacturing of Dies and Molds", CIRP ANNALS, ELSEVIER BV, NL, CH, FR, vol. 50, no. 2, 1 January 2001 (2001-01-01), pages 404 - 422, XP022144996, ISSN: 0007-8506, DOI: 10.1016/S0007-8506(07)62988-6
  • [A] BAUER W ET AL: "Development of a rapid prototyping process chain for the production of ceramic microcomponents", JOURNAL OF MATERIALS SCIENCE, KLUWER ACADEMIC PUBLISHERS, BO, vol. 37, no. 15, 1 August 2002 (2002-08-01), pages 3127 - 3140, XP019209662, ISSN: 1573-4803, DOI: 10.1023/A:1016150126206

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

DOCDB simple family (publication)

US 2011132562 A1 20110609; EP 2509727 A2 20121017; EP 2509727 B1 20190501; EP 3552732 A1 20191016; US 2014241938 A1 20140828; WO 2011071974 A2 20110616; WO 2011071974 A3 20110922

DOCDB simple family (application)

US 96162110 A 20101207; EP 10793385 A 20101208; EP 19172041 A 20101208; US 2010059377 W 20101208; US 201414268391 A 20140502