Patents by Inventor Sebastian Piegert

Sebastian Piegert has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8808872
    Abstract: A germanium containing nickel-based solder having a similar composition to a nickel-based superalloy is provided. As a result of which the proportion of ?? formed in the solder is reduced. The solder also includes chromium, cobalt, molybdenum, tungsten, aluminum, and titanium. A component including the solder is also provided.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: August 19, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Ott, Sebastian Piegert, Peter Randelzhofer, Robert Singer
  • Publication number: 20140191017
    Abstract: The invention relates to a novel alloy which comprises the elements carbon (C), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), titanium (Ti), aluminium (Al), boron (B), and zirconium (Zr), based on nickel, and which has a very low tendency to form cracks during welding.
    Type: Application
    Filed: June 13, 2012
    Publication date: July 10, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Nikolai Arjakine, Torsten Jokisch, Andreas Neidel, Michael Ott, Sebastian Piegert, Dimitrios Thomaidis
  • Patent number: 8763885
    Abstract: Cobalt-based solder alloys are proposed. The cobalt-based solder alloys have germanium. The germanium has a higher melting point than nickel-based alloys such that the germanium is used advantageously for repairing or treating components having the nickel-based alloys used at high temperatures. The components are repaired or treated by soldering using the cobalt-based solder alloys.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: July 1, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Sebastian Piegert, Peter Randelzhofer, Robert Singer
  • Publication number: 20130302647
    Abstract: A multi component braze filler alloy is described having a melting temperature less than about 1235 deg. C. and greater than about 1150 deg. C. This alloy can be processed by hot isostatic pressing (HIP) at a temperature above about 1065 deg. C. and is particularly suited for the repair of gas turbine blades and vanes, especially those made from alloy 247. The relatively low Ti content in the present braze alloy tends to form less MC carbides at the joint interface, particularly in comparison with other braze alloys high in Zr and/or Hf.
    Type: Application
    Filed: May 9, 2012
    Publication date: November 14, 2013
    Inventors: Kazim Ozbaysal, Sebastian Piegert
  • Patent number: 8555500
    Abstract: A method of producing or repairing single-crystalline turbine or engine components by the following steps: heating of braze filler metal to a temperature which is greater than or equal to the melting temperature of the braze filler metal; introducing the molten mass of the braze filler metal produced through the heating process into a crack formed in the turbine or engine component, or into the gap formed between two turbine or engine components, or into a damaged area of a turbine or engine component; and non-isothermal control or regulation of the temperature of the braze filler metal or turbine or engine component during an epitaxic solidification process of the braze filler metal.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: October 15, 2013
    Assignee: MTU Aero Engines GmbH
    Inventors: Andreas Vossberg, Hans Joachim Rösler, Sebastian Piegert
  • Publication number: 20130136649
    Abstract: A nickel-based DS alloy for directional solidification, includes Cobalt (Co), Chromium (Cr), Molybdenum (Mo), Tungsten (W), Tantalum (Ta), Titanium (Ti), Aluminum (Al), Rhenium (Re), Hafnium (Hf), Boron (B), Carbon (C), and Zirconium (Zr). Further, a component, for example a turbine blade or vane, with such an alloy is provided.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 30, 2013
    Inventors: Winfried Eßer, Uwe Paul, Sebastian Piegert
  • Publication number: 20130101866
    Abstract: A combined welding and soldering process for a structural part and a structural part are provided. The combined welding and soldering process can achieve joints which are stable at high temperatures between the components. All contacts between the components can be joined to one another optionally in accordance with their loading.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 25, 2013
    Inventor: Sebastian Piegert
  • Publication number: 20130045129
    Abstract: A solder alloy including a base material, a solder, and an additive is provided. The solder alloy has the following formula: (1?x?y)*base material+x*solder+y*additive, where 0.2?x?0.8 and 0?y<0.8 and also (y<1?x)<(1?x). The base material includes chromium, cobalt, aluminum, and tungsten. The solder includes chromium, cobalt, aluminum, tungsten, germanium and/or gallium and nickel. The additive may include boron, zirconium, hafnium, niobium, and carbon.
    Type: Application
    Filed: April 12, 2010
    Publication date: February 21, 2013
    Inventors: Michael Ott, Sebastian Piegert
  • Publication number: 20130029179
    Abstract: A germanium containing nickel-based solder having a similar composition to a nickel-based superalloy is provided. As a result of which the proportion of ?? formed in the solder is reduced. The solder also includes chromium, cobalt, molybdenum, tungsten, aluminum, and titanium. A component including the solder is also provided.
    Type: Application
    Filed: April 6, 2011
    Publication date: January 31, 2013
    Inventors: Michael Ott, Sebastian Piegert, Peter Randelzhofer, Robert Singer
  • Publication number: 20130028783
    Abstract: A solder alloy including a base material, a solder, and an additive is provided. The solder alloy has the following formula: (1?x?y)*base material+x*solder+y*additive, where 0.2?x?0.8 and 0?y<0.8 and also (y<1?x). The base material includes chromium, nickel, aluminum, and tungsten. The solder includes chromium, cobalt, aluminum, tungsten, germanium and/or gallium, and nickel. The additive may include boron, zirconium, and carbon.
    Type: Application
    Filed: April 12, 2010
    Publication date: January 31, 2013
    Inventors: Michael Ott, Sebastian Piegert
  • Publication number: 20130001277
    Abstract: A method for brazing a surface of a metallic substrate having a generally passive metal oxide layer includes activating the surface of the metallic substrate by machining the metallic substrate with a hard metal tool, grit blasting powdered particles of an activating material on the surface, and wetting the grit blasted surface of the metallic substrate with a filler material at a brazing temperature, wherein the activating material is reactive with the metal oxide layer at the brazing temperature.
    Type: Application
    Filed: March 15, 2011
    Publication date: January 3, 2013
    Inventors: Sebastian Piegert, Ingo Reinkensmeier
  • Publication number: 20100291405
    Abstract: A method of producing or repairing single-crystalline turbine or engine components by the following steps: heating of braze filler metal to a temperature which is greater than or equal to the melting temperature of the braze filler metal; introducing the molten mass of the braze filler metal produced through the heating process into a crack formed in the turbine or engine component, or into the gap formed between two turbine or engine components, or into a damaged area of a turbine or engine component; and non-isothermal control or regulation of the temperature of the braze filler metal or turbine or engine component during an epitaxic solidification process of the braze filler metal.
    Type: Application
    Filed: May 31, 2007
    Publication date: November 18, 2010
    Inventors: Andreas Vossberg, Hans Joachin Rösler, Sebastian Piegert