公开(公告)号：CA2581033A1

公开(公告)日：2008-02-10

申请号：CA2581033

申请日：2007-03-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： LEVASSEUR GLENN N ,  SHI JUN ,  BUTLER SHAOLUO L ,  GREEN KEVIN E ,  SRINIVASAN GAJAWALLI V

IPC: F01D5/18 ,  F01D5/28 ,  F01D9/02 ,  F01D25/12

Abstract: A shroud suitable for use in a gas turbine engine exhibits substantially uniform thermal growth.

公开(公告)号：EP3055091A4

公开(公告)日：2017-07-05

申请号：EP14851677

申请日：2014-09-25

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GREGG SHAWN J ,  STAROSELSKY ALEXANDER ,  SRINIVASAN GAJAWALLI V

IPC: B22F3/105 ,  B22F3/11 ,  B22F5/04 ,  F01D5/28

CPC classification number: B23K26/342 ,  B22F3/1055 ,  B22F3/11 ,  B22F5/04 ,  B22F2207/13 ,  B22F2207/17 ,  B23K26/0006 ,  B23K26/12 ,  B23K26/144 ,  B23K2203/02 ,  B23K2203/08 ,  B23K2203/14 ,  B33Y10/00 ,  B33Y80/00 ,  F01D5/18 ,  F01D5/28 ,  Y02P10/295

Abstract: A method of forming a metal component having different regions containing different grain sizes and in porosities is by additive manufacturing. The method includes spreading a layer of starting powder on a temperature controlled moveable platform in a heated chamber with atmosphere and temperature control. Selected areas of the powder are melted and solidified with a computer controlled focused energy beam. The cooled platform is then indexed down and the process repeated. The grain size of the melted and solidified region can be controlled by the cooling rate during solidification which, in turn is controlled by the temperature of the chamber and the temperature of the cooled moveable platform.

Abstract translation: 形成具有不同粒度和孔隙度的不同区域的金属组分的方法是通过增材制造。 该方法包括在具有大气和温度控制的加热室中的温度控制的可移动平台上散布一层起始粉末。 选定的粉末区域通过计算机控制的聚焦能量束熔化并固化。 然后将冷却的平台索引下来并重复该过程。 熔化和凝固区域的晶粒尺寸可以通过凝固过程中的冷却速率来控制，凝固过程中的冷却速度又由腔室的温度和冷却的可移动平台的温度来控制。