Coolant tube for use in a liquid-cooled electrode disposed in a

Details Coolant tube for use in a liquid-cooled electrode disposed in a Coolant tube for use in a liquid-cooled electrode disposed in a

1996-10-28

1998-05-26

Paschall, Mark H.

Electric heating

Metal heating

By arc

219 75, 21912152, 219119, 31323131, B23K 1000

Patent

active

057569592

ABSTRACT:
A coolant tube for a liquid-cooled electrode disposed a plasma arc torch does not become damaged during an electrode blow-out condition. The coolant tube includes a hollow member and a substantially solid member. The hollow member has a first end, a second end and a coolant passage extending between the first and second ends. The first end can be secured within the torch such that the coolant tube is disposed adjacent the interior surface of the electrode and such that the coolant passage is in fluid communication with a coolant supply. The substantially solid member extends from the second end of the hollow member and has at least one flow restriction orifice extending therethrough. Each flow restriction orifice is fluid communication with the coolant passage for providing at least one high velocity jet of coolant to the interior surface of the electrode.

REFERENCES:
patent: 3818174 (1974-06-01), Camacho
patent: 4650956 (1987-03-01), Marchic et al.
patent: 5416296 (1995-05-01), Walter

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