Method and apparatus for forming reinforcing cage for prestresse

Details Method and apparatus for forming reinforcing cage for prestresse Method and apparatus for forming reinforcing cage for prestresse

1982-05-25

1985-08-27

Envall, Jr., Roy N.

Electric heating

Metal heating

Wire, rod, or bar bonding

219 56, 219110, B23K 1132

Patent

active

045380422

ABSTRACT:
Apparatus and method for forming a reinforcing cage for a prestressed concrete pile, in which the cage includes a set of main steel bars arranged in a circular pattern and an auxiliary wire which is helically wound around and welded at its crossings with the steel bars, that prevents any crossings from being welded when the current for welding is either insufficient in magnitude or not present and that prevents any unwelded crossings from being subsequently tempered.

REFERENCES:
patent: 3621193 (1971-11-01), Low
patent: 4242561 (1980-12-01), Long

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