Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1974-11-19
1976-06-29
White, Robert F.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264 40, 264314, 264334, B29C 700
Patent
active
039668711
ABSTRACT:
To inspect an internal zone of a tubular cavity having an open end, for example, a zone of possible damage in a heat-exchanger tube, an elastically hardenable casting plastic is transported to the zone and cast against the surface embraced by the internal zone, and after hardening to an elastic casting, is pulled from the zone for inspection outside of the open end of the cavity. Being elastic, the casting is not permanently deformed when pulled from the zone, the casting providing an undistorted physical image of the surface within the zone, permitting a determination of possible damage including pitting, cracks and the like.
REFERENCES:
patent: 907724 (1908-12-01), Boyle
patent: 2618014 (1952-11-01), Sawyer
patent: 2886852 (1959-05-01), Rose
patent: 3315017 (1967-04-01), Kemp
patent: 3356777 (1967-12-01), Barnett
patent: 3423500 (1969-01-01), Gregory
patent: 3440314 (1969-04-01), Frisch
patent: 3803276 (1974-04-01), Megias
patent: 3834422 (1974-09-01), Larson
patent: 3902528 (1975-09-01), Tartabini
patent: 3903730 (1975-09-01), Matthews
Kraftwerk Union Aktiengesellschaft
Pavelko Thomas P.
White Robert F.
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