Hydraulic punch tool for heat exchangers

Details Hydraulic punch tool for heat exchangers Hydraulic punch tool for heat exchangers

1986-01-03

1988-03-15

Watts, Douglas

Cutlery

Pipe and rod cutters

Rotary

30 92, B23D 2106, B26B 2700

Patent

active

047303921

ABSTRACT:
A punch tool is disclosed for puncturing the walls of heat exchanger tubes when they become worn in order that the tubes may be repaired. Said tool comprises a hardened, longitudinally drilled, steel rod that is able to fit within the heat exchanger tube. A piston with a cutting bit is fit within a milled slot that communicates with the longitudinally drilled hole of the hardened rod. Once the tool is inserted into a tube to be repaired hydraulic pressure is applied and the piston is forced outward thereby puncturing the tube.

REFERENCES:
patent: 3568657 (1971-03-01), Gue
patent: 4424629 (1984-01-01), Schott
patent: 4455746 (1984-06-01), Idzik et al.

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