公开(公告)号：US07779889B2

公开(公告)日：2010-08-24

申请号：US11834893

申请日：2007-08-07

Applicant: Umberto Aprile ,  Jean-Claude Jacques Giral ,  Bernard Louis Lallement ,  Jean-Louis Martial Verger

Inventor： Umberto Aprile ,  Jean-Claude Jacques Giral ,  Bernard Louis Lallement ,  Jean-Louis Martial Verger

IPC: B22D25/06 ,  B22D27/20

CPC classification number: B22C7/02 ,  B22C9/04 ,  B22D27/045 ,  C30B11/002 ,  C30B11/14 ,  C30B29/52

Abstract: A process for manufacturing at least one single-crystal seed that can be used as a starter seed in the manufacture of a single-crystal high-pressure turbine nozzle, with at least one vane between two platforms, by metal casting, is disclosed. The process includes producing a wax pattern that includes a pattern for the nozzle, a pattern for the starter seed, and a pattern for a crude seed; forming a ceramic shell mold from the wax pattern; incorporating a starter seed into the mold; pouring metal into the mold; directionally solidifying the metal in the mold from the starter seed; and separating the crude seed from the nozzle. The starter seed and the crude seed each include a flat face for localizing the crystalline orientations. The crude seed has the same crystallographic structure as the nozzle.

Abstract translation: 公开了一种用于制造可以用作制造单晶高压涡轮喷嘴的至少一种单晶种子的方法，其中通过金属铸造在两个平台之间具有至少一个叶片。 该方法包括制备蜡图案，其包括用于喷嘴的图案，起始种子的图案和粗种子的图案; 从蜡图案形成陶瓷壳模具; 将起始种子并入模具中; 将金属倒入模具中; 从起子种子定向凝固模具中的金属; 并将粗种子与喷嘴分离。 起始种子和粗种子各自包括用于定位结晶取向的平坦面。 粗种子具有与喷嘴相同的晶体结构。

公开(公告)号：US20080169076A1

公开(公告)日：2008-07-17

申请号：US11834893

申请日：2007-08-07

Applicant: Umberto APRILE ,  Jean-Claude Jacques Giral ,  Bernard Louis Lallement ,  Jean-Louis Martial Verger

Inventor： Umberto APRILE ,  Jean-Claude Jacques Giral ,  Bernard Louis Lallement ,  Jean-Louis Martial Verger

IPC: B22D27/04 ,  B22C9/04

CPC classification number: B22C7/02 ,  B22C9/04 ,  B22D27/045 ,  C30B11/002 ,  C30B11/14 ,  C30B29/52

Abstract: The present invention relates to a process for manufacturing at least one single-crystal seed that can be used as a starter seed in the manufacture of a single-crystal high-pressure turbine nozzle, with at least one vane between two platforms, by metal casting, wherein: a wax pattern is produced which comprises: a first element forming the pattern for the nozzle, a second element forming the pattern for the starter seed, including a flat face for localizing the crystalline orientations, and at least a third element incorporating a pattern for the crude seed with a flat face for localizing the crystalline orientations; a ceramic shell mold is formed from said wax pattern and a starter seed, including said flat face for localizing the crystalline orientations, is incorporated into the mold; a metal is poured into the mold; the metal undergoes directional solidification in the mold from the starter seed, so that the crude seed obtained has the same crystallographic structure as the part; and the crude seed obtained is separated from the part for subsequent use as a starter seed.

Abstract translation: 本发明涉及一种用于制造至少一种单晶种子的方法，该单晶种子可用作制造单晶高压涡轮喷嘴中的起始种子，其中两个平台之间具有至少一个叶片，通过金属铸造 其中：产生蜡图案，其包括：形成用于喷嘴的图案的第一元件，形成用于起始种子的图案的第二元件，包括用于定位晶体取向的平面，以及至少包括 具有平面的粗种子的图案用于定位晶体取向; 由所述蜡图案形成陶瓷壳模，并且将包括用于定位晶体取向的所述平面的起始种子并入模具中; 将金属倒入模具中; 金属在起始种子中在模具中进行定向凝固，使得得到的粗种子具有与该部分相同的晶体结构; 将得到的粗种子与该部分分离，作为起始种子后续使用。