Method of arc welding porous sheet metal

Details Method of arc welding porous sheet metal Method of arc welding porous sheet metal

1979-03-22

1981-07-21

Goldberg, E. A.

Electric heating

Metal heating

For bonding with pressure

219 61, 219 66, 219137R, B23K 902

Patent

active

042800404

ABSTRACT:
A method for manufacturing a gas turbine combustion chamber that preserves cooling fluid holes therein. Passages are formed in one surface of each of two metal sheets. A plurality of cooling fluid holes are drilled through the passages to the other surface of each sheet. The two metal sheets are abutted face-to-face so that their respective passages form channels and the sheets are thereafter brazed together. The brazed sheets are bent to form an annular shaped chamber having a butt joint running along the length of the chamber. The butt joint is electric-arc welded along each side of the same, there being only partial penetration by each weld thereby avoiding the filling in of any of the cooling fluid holes, in the line of the weld, with melted material.

REFERENCES:
patent: 1655931 (1928-01-01), Langstroth
patent: 3223816 (1965-12-01), Marsden
patent: 3319043 (1967-05-01), Rohrberg
patent: 3748429 (1973-07-01), Agusa
patent: 3860777 (1975-01-01), Sawhill
patent: 4038514 (1977-07-01), Ashton
patent: 4152568 (1979-05-01), Yamaguchi

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