Removal of oxide layers from titanium castings using an alkaline

Details Removal of oxide layers from titanium castings using an alkaline Removal of oxide layers from titanium castings using an alkaline

1991-12-03

1993-05-18

Roy, Upendra

Metal treatment

Stock

Titanium, zirconium, or hafnium base

420417, C21D 100

Patent

active

052117758

ABSTRACT:
The invention relates to a process for the removal of oxides and/or oxygen which are formed on the surface of the casting during the investment casting process to levels that are comparable to those found within the bulk of the metal casting thus reducing the inherent hardness of the surfaces of the casting. More specifically, the invention relates to a process for removing oxide layers from titanium casting using an alkaline earth deoxidizing agent.

REFERENCES:
patent: 2537068 (1951-01-01), Lilliendahl et al.
patent: 2653869 (1953-09-01), Gregory et al.
patent: 2834667 (1958-05-01), Rostron
patent: 4373947 (1983-02-01), Buttner et al.
patent: 4519837 (1985-05-01), Down
patent: 4923531 (1990-05-01), Fisher
patent: 5022935 (1991-06-01), Fisher

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