Brazing process, braze assembly, and brazed article

摘要

A brazing process, a braze assembly, and a brazed article are disclosed. The brazing process includes applying a braze material to an article within a vacuum chamber while the vacuum chamber is substantially evacuated. The braze assembly is capable of applying a braze material to an article within a vacuum chamber while the vacuum chamber is substantially evacuated. The brazed article is devoid of re-formed oxides.

主权项

1. A brazing process, comprising:
providing an article, and a braze assembly including a braze material, wherein the article is a turbine component selected from a group consisting of a blade, a dovetail of a blade, a shroud, a nozzle, a bucket, or combination thereof; positioning the braze assembly and the article, wherein the braze assembly includes a configuration which contacts the article above a treatment region and mechanically suspends the braze assembly; placing the article and the braze assembly within a vacuum chamber; substantially evacuating the vacuum chamber to a predetermined vacuum pressure; heating the article and the braze assembly to a braze application temperature, the braze application temperature being below a braze temperature of the braze material, wherein heating the article and the braze assembly at the predetermined vacuum pressure cleans the article and the braze assembly, removing oxides; and subsequently applying the braze material to the treatment region from the braze assembly at the braze application temperature while the vacuum chamber is substantially evacuated.