Global Patent Index - EP 2022582 A1

EP 2022582 A1 2009-02-11 - PROCESS FOR PRODUCING SPHERICAL TITANIUM ALLOY POWDER

Title (en)

PROCESS FOR PRODUCING SPHERICAL TITANIUM ALLOY POWDER

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES SPHÄRISCHEN TITANLEGIERUNGSPULVERS

Title (fr)

PROCÉDÉ DE FABRICATION DE POUDRE SPHÉRIQUE D'ALLIAGE DE TITANE

Publication

EP 2022582 A1 (EN)

Application

EP 07739304 A

Priority

  • JP 2007055861 W
  • JP 2006138730 A

Abstract (en)

In production of a titanium alloy spherical powder by a gas atomizing method, the difference in alloy composition depending on the product particle size is reduced economically. To achieve this, sponge titanium particles and additive metal element particles are mixed by means of a mixer having a pulverizing function such as a ball mill. The mixed particles are compressed to form a rod-formed raw material for melting. The formed rod-formed raw material for melting is powderized by a gas atomizing method. In the mixing step, the additive metal element particles are pulverized, or ground depending on the kind of particles, and solidly adhered to the surface of the sponge titanium particles, so that uniform mixing is possible.

IPC 8 full level (invention and additional information)

B22F 9/08 (2006.01); C22C 14/00 (2006.01); C22C 21/00 (2006.01)

CPC (invention and additional information)

C22C 14/00 (2013.01); B22F 9/082 (2013.01); C22C 1/06 (2013.01); C22C 21/00 (2013.01); C22F 1/183 (2013.01); B22F 2009/043 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

EPO simple patent family

EP 2022582 A1 20090211; EP 2022582 A4 20100721; AU 2007252758 A1 20071129; JP 2007308755 A 20071129; JP 4947690 B2 20120606; KR 20090018143 A 20090219; US 2009107294 A1 20090430; WO 2007135806 A1 20071129

INPADOC legal status


2011-03-30 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20101001

2010-07-21 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20100617

2009-03-11 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: NISHIOKA, KAZUO

2009-03-11 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: FUJITA, MAKOTO

2009-03-11 [RIN1] INVENTOR CHANGED BEFORE GRANT

- Inventor name: ARIMOTO, NOBUHIRO

2009-02-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20081104

2009-02-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

2009-02-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA HR MK RS