Hybride part and method of manufacture

• US 9,731,351 B2
• Filed: 07/25/2013
• Issued: 08/15/2017
• Est. Priority Date: 09/28/2012
• Status: Active Grant

• Current Assignee: Siemens Energy Global GmbH & Co. KG (Siemens AG)
• Original Assignee: Siemens AG
• Inventors: Andersson, Olov, Eriksson, Jonas, Graichen, Andreas
• Primary Examiner(s): Loney, Donald J
• Application Number:
  US14/431,834
• Publication Number:
  US 20150266092A1
• Time in Patent Office: 1,482 Days
• CPC Class Codes: B22F 10/28 Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
• CPC Class Codes: B22F 2007/068 repairing articles
• CPC Class Codes: B22F 5/009 of turbine components other than turbine blades of turbine blades B22F5/04
• CPC Class Codes: B22F 5/10 of articles with cavities or holes, not otherwise provided for in the preceding subgroups
• CPC Class Codes: B22F 7/06 of composite workpieces or articles from parts, e.g. to form tipped tools B22F7/002 takes precedence
• CPC Class Codes: B22F 7/062 involving the connection or repairing of preformed parts
• CPC Class Codes: B29C 64/10 Processes of additive manufacturing
• CPC Class Codes: B29C 64/153 using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• CPC Class Codes: B33Y 10/00 Processes of additive manufacturing
• CPC Class Codes: B33Y 30/00 Apparatus for additive manufacturing; Details thereof or accessories therefor
• CPC Class Codes: B33Y 80/00 Products made by additive manufacturing
• CPC Class Codes: Y02P 10/25 Process efficiency
• CPC Class Codes: Y10T 428/24322 Composite web or sheet
• CPC Class Codes: Y10T 428/24744 Longitudinal or transverse tubular cavity or cell

Abstract

A part (P) includes a first (FP), and a second portion (SP), which meet at an interface (IF). A channel (CH) extends from the first portion (FP) through the interface (IF) into the second portion (SP). Further there is a method to generate the part (P). To refurbish a part with tiny geometry channels, the second portion (SP) is produced by additive manufacturing technology on the interface (IF) with the first portion (FP), the channel (CH) has a first average diameter (DI) in the first portion (FP) and the interface (IF), and the channel (CH) has a second average diameter (D2) in the second portion (SP) at said interface (IF). The second diameter (D2) is larger than the first diameter (DI). The channel (CH) has a first tapered portion (TP) which narrows in the second portion (SP) at increasing distance from the interface (IF).

Claims

1. A hybride part comprising:

a first portion;

a second portion positioned at said first portion;

an interface defining said first portion from said second portion;

wherein said second portion is produced by additive manufacturing technology and is produced on said first portion and at said interface;

a channel extending from said first portion through said interface and into said second portion;

said channel has a first average diameter in said first portion and at said interface;

said channel has a second average diameter in said second portion and at said interface;

said second average diameter being larger than said first average diameter;

wherein said channel tapers narrower along a first tapered section of said channel in said second portion wherein said first tapered section tapers narrower at increasing distance from said interface;

wherein said channel extends along a first central axis in said first portion at least in proximity to said interface;

wherein said channel also extends along a second central axis in said second portion at least in proximity to said interface;

wherein said first axis is parallel to and offset from said second axis at and near said interface; and

wherein an end of said channel in said first portion at said interface and a first end of said first tapered section of said channel in said second portion at said interface are at a same level, one side of said end of channel in said first portion is within a portion of said first end of said channel in said second portion, said portion being within a third average diameter of a second section of said channel in said second portion, said second section ending at a second end of said first tapered section, and another side of said end of said channel in said first portion is outside of said portion of said first end of said first tapered section of said channel in said second portion.

2. The hybride part according to claim 1, wherein said third average diameter of said second section of said channel in said second portion is nominally the same as said first average diameter.

3. The hybride part according to claim 1, wherein said second section has a round, oval, or elliptic cross section.

4. A method to produce the hybride part according to claim 1, the method comprising:

providing said first portion for said hybride part;

forming said second portion for said hybride part by adding material by additive manufacturing to said first portion and thereby also forming said interface between said first and said second portions in order to build up said second portion, and said interface defining said first portion from said second portion;

providing said channel extending from said first portion, through said interface and into said second portion;

providing said first portion, in which said channel extends through said first portion along said first central axis at least in proximity to said interface;

wherein said channel has said first average diameter in said first portion at said interface;

adding material to build up said second portion at said interface and causing said channel to extend along said second central axis at least in proximity to said interface;

said channel has said second average diameter in said second portion at said interface;

wherein said second average diameter is larger than said first average diameter; and

wherein said channel in said second portion tapers along said first tapered section which becomes narrower in said second portion at increasing distance from said interface.

5. The method according to claim 4, wherein said second central axis of said second portion is offset from said first central axis over said interface, and said offset is smaller than the diameter of said channel in said second portion at said interface minus the diameter of said channel in said first portion at said interface.