Method for joining single crystal turbine blade halves

Details Method for joining single crystal turbine blade halves Method for joining single crystal turbine blade halves

1991-03-11

1991-12-10

Seidel, Richard K.

Metal fusion bonding

Process

Feeding unfused filler into fusing contact with work part

228225, 22826313, 2988972, 219 7613, B21K 304, B23P 1504, B23P 3100

Patent

active

050710591

ABSTRACT:
Single crystal, nickel based superalloy turbine blades are formed by fusion welding together two matched blade halves. The matched blade halves are joined by an electrospark deposition process which deposits a weld filler metal along the matched faying surfaces. The deposited weld filler metal is preferably the same nickel based superalloy used to form the single crystal turbine blades. Total heat input to the base metal is minimal so that distortion and metallurgical structure changes of the base metal are virtually nonexistent.

REFERENCES:
patent: 2166998 (1939-07-01), Morgan
patent: 2463340 (1949-03-01), Wieberg
patent: 3088192 (1963-05-01), Turner
patent: 4551603 (1985-11-01), Rocklin
patent: 4611752 (1986-09-01), Jahnke
patent: 4649089 (1987-03-01), Johnson

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