Hot Wire Tig Process0 pages

Hot Wire Process

Contoured Wave AC High Capacity Feed Head Increased Deposition Rate Simple to Use >
Standard Hot Wire System Custom-designed Torch Dual-Axis Wire Positioner >
Contoured-Wave Hot Wire Power Supply This unique power supply is manufactured by Jet-
line Engineering specifically for the hot wire pro-
cess. The system features a contoured-wave, AC
output. Experience has shown that the use of an
AC power supply enhances the hot wire deposition
and reduces arc-blow problems experienced with
conventional hot wire systems using DC hot wire
power.The output of the power supply is controlled using asolid-state control module. This module contours
the AC waveform to create one which closely
simulates a sine wave. The use of sinusoidal AC
voltage greatly improves the flow of the hot wire
into the weld pool. Frequency is adjustable from 50
to 200 Hz. This waveform permits higher wire feed
speeds and currents leading to increased deposi-
tion rates and welding speeds.The power supply provides up to 200 amps of hotwire current at voltages which are adjustable from
2 to 10 VAC. The voltage is regulated by a poten-
tiometer on the hot wire power control or may be
controlled by a remote 0 to 10 VDC signal. Meters
are provided to indicate hot wire voltage and
current, and a gas purge button is supplied. Introduction The hot wire process is used in applications where ahigh deposition of the filler wire is desired. The
process is used primarily with the GTAW (TIG) or the
PAW (Plasma) welding process.Hot wire welding provides deposition rates morenormally associated with the GMAW (MIG) welding
process but with the added advantages offered by
GTAW (TIG) and PAW (Plasma) welding.These advantages include better control of theheat input because the welding current is indepen-
dent of the wire feed speed. This leads to reduced
dilution in overlay welds and better side wall fusion
in deep groove welds. Description A complete Jetline hot wire system consists of:Contoured-wave hot wire power supplyHot wire power control
Heavy-duty wire drive unit
Wire feed speed control
Hot wire torch
Hot wire torch positioner assemblyThe hot wire system is supplied as a completelyintegrated package with all the necessary inter-
connecting cables and hoses. The system has
universal fittings to allow it to fit on any GTAW (TIG)
or PAW (Plasma) torch and is supplied in a "ready-
to-weld" condition. Heavy-Duty Wire Drive Unit The wire drive unit consists of a four-roll feedhead
driven by a high capacity, DC motor. The wire drive
unit is mounted on a base which also supports the
wire reel holder. A wire straightener is supplied as
standard with the system.The wire feed speed is regulated by the 9629HWmicroprocessor control and is adjustable from 10 to
600 IPM (25 to 1,525 cm/min). This control permits
wire inching, wire speed ramp up at the start and
wire retract at the end of the weld. 15 Goodyear St, Irvine, California, 92618 U.S.A. Tel: (949) 951-1515 Օ Fax: (949) 951-9237 size="-2">