公开(公告)号：EP1769099B1

公开(公告)日：2015-02-18

申请号：EP05759892.2

申请日：2005-07-08

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Siemens Aktiengesellschaft

发明人： BRENNER, Berndt ,  BONSS, Steffen ,  TIETZ, Frank ,  KASPAR, Jörg ,  WALTER, David

IPC分类号： C23C8/20 ,  C23C8/06 ,  C23C8/08 ,  C23C24/08 ,  B23K26/00 ,  C22B4/00 ,  B23K26/34 ,  B23K31/02 ,  C23C8/24

CPC分类号： C23C8/06 ,  B23K26/32 ,  B23K26/34 ,  B23K31/025 ,  B23K35/325 ,  B23K2201/001 ,  B23K2203/14 ,  C23C8/24 ,  C23C24/08 ,  Y02T50/67

公开(公告)号：EP2087141B1

公开(公告)日：2019-08-28

申请号：EP07818860.4

申请日：2007-10-10

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： BRENNER, Berndt ,  BONSS, Steffen ,  TIETZ, Frank ,  SEIFERT, Marko ,  HANNWEBER, Jan ,  KÜHN, Stefan ,  KARSUNKE, Udo

IPC分类号： C21D1/09 ,  C21D10/00

公开(公告)号：EP2087141A1

公开(公告)日：2009-08-12

申请号：EP07818860.4

申请日：2007-10-10

申请人： Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V.

发明人： BRENNER, Berndt ,  BONSS, Steffen ,  TIETZ, Frank ,  SEIFERT, Marko ,  HANNWEBER, Jan ,  KÜHN, Stefan ,  KARSUNKE, Udo

IPC分类号： C21D1/09 ,  C21D10/00

CPC分类号： C21D1/09 ,  C21D10/00 ,  C21D10/005 ,  C21D11/00

摘要： The invention relates to the hardening of the surface layer of parts of machines, plants and apparatuses and also tools. Objects for which the application is possible and advantageous are components which are subjected to severe fatigue or wear stresses and are composed of hardenable steels and have a complicated shape and whose surface has to be hardened selectively on the functional surfaces or whose functional surface has a multidimensional shape. The process for hardening the surface layer of components having a complicated shape is carried out by means of a plurality of energy input zones. According to the invention, it is characterized in that the energy input zones are conducted on different curved parts separately in space and time and by means of cooperatively working transport systems so that superposition of the individual temperature fields forms a uniform temperature field which completely covers the functional surface of the component and within which each surface element of the later hardening zone of the component attains the selected austenite formation temperature interval ΔTa at least once and the time interval Δt between the maximum temperatures Tmaxn of the individual temperature fields is from 3.1 to 3.n smaller than the time ΔtmS which is required to go below the martensite start temperature MS during the cooling phase. The apparatus by means of which the process of the invention can be carried out is, according to the invention, characterized in that the energy configuring units are connected to one or more energy sources for optical or electromagnetic radiation and are each fixed to separate but cooperatively operating transport systems.

公开(公告)号：EP1769099A1

公开(公告)日：2007-04-04

申请号：EP05759892.2

申请日：2005-07-08

申请人： Fraunhofer-Gesellschaft Zur Förderung der angewand ten Forschung e.v. ,  SIEMENS AKTIENGESELLSCHAFT

发明人： BRENNER, Berndt ,  BONSS, Steffen ,  TIETZ, Frank ,  KASPAR, Jörg ,  WALTER, David

IPC分类号： C23C8/20 ,  C23C8/06 ,  C23C8/08 ,  C23C24/08 ,  B23K26/00 ,  C22B4/00

CPC分类号： C23C8/06 ,  B23K26/32 ,  B23K26/34 ,  B23K31/025 ,  B23K35/325 ,  B23K2201/001 ,  B23K2203/14 ,  C23C8/24 ,  C23C24/08 ,  Y02T50/67

摘要： The invention relates to the edge layer finishing of functional components, and especially to a method for producing wear-resistant and fatigue-resistant edge layers from titanium alloys, and correspondingly produced components. The inventive method for producing wear-resistant and fatigue-resistant edge layers in titanium alloys by means of laser glass alloying is essentially characterised in that the laser glass alloying is carried out by means of a reaction gas that contains or releases interstitially soluble elements in the used titanium alloy. The partial pressure of the reaction gas is selected in such a way that it remains below the threshold value above which nitride, carbide or boride titanium phases are produced. The inventive wear-resistant and fatigue-resistant component consisting of a titanium alloy with a glass-alloyed edge layer is characterised in that the wear-resistant edge layer consists of a fine-grain mixture of a-titanium and ß-titanium grains containing an interstitially dissolved reaction gas, having a surface hardness Hs, measured on the polished surface, of 360 HV0.5 ≤ Hs ≤ 500 HV0.5, or an edge layer micro-hardness HR, measured on a polished cross-section at 0.1 mm below the surface, of 360 HV0.1 ≤ HR ≤ 560 HV0.1, extends over a depth tR of 0.1 mm ≤ tR ≤ 3.5 mm, and does not contain any nitride, carbide, or boride phases produced by the reaction gas.