Strongback and method for positioning same

Details Strongback and method for positioning same Strongback and method for positioning same

1976-09-10

1978-03-14

Husar, Francis S.

Metal founding

Process

Shaping a forming surface

164 35, 164 60, 164235, 164246, B22C 910, B22C 702

Patent

active

040785980

ABSTRACT:
The present invention provides means for the improved positioning of a strongback in a pattern mold for formation of expendable patterns thereon. Investment casting molds formed around the assembly of strongback and patterns are characterized as having the strongback precisely and reproducibly suspended therein. Articles, such as turbine blade halves, cast in such investment molds have mating surfaces in close dimensional relationship and can be bonded one to any mating other to form a finished product.
In particular, a strongback having bonding locators near the opposite ends thereof is provided with additional locators to be used in suspending the strongback in the pattern mold. According to the invention, these pattern mold locators are colinear with and in close proximity to the bonding locators and are engaged by locating means in the pattern mold for establishing precise positioning of the strongback therein.

REFERENCES:
patent: 3965963 (1976-06-01), Phipps et al.

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