Holzmann PISA200AC/DC, Руководство пользователя

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OPERATION
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WIG/TIG Puls Inverter Schweißanlage / WIG/TIG Pulse inverter welding unit PISA200AC/DC
When the welding operation is finished, turn off argon bottle switch and cut off input
power of the welder.
12.1.4 PULSE ARGON ARC WELDING
Put the"9. Pulse choice switch "on "Pulse"
Selection of base current and pulse current( current regulation):
To carry out the pulse argon are welding,the base current"4"should be lower than pulse
current"3" (current regulation).If both the knobs are regulated clockwise, the current
will be increased,conversely,it will be decreased the base current regulating same as
"1.2 DC ARGON ARC WELDING "
Pulse frequency regulating: when the knob"6" is regulated clockwise,the frequency is
high and pulse speed is high; conversely the speed is low. The frequency changes be-
tween 0.5-25Hz.
Regulation of pulse width ratio; when the knob"5" is regulated clockwise, the width ra-
tio increase, conversely, it decrease. It can be selected between 0.1-0.9.
Regulation of down-slope time:when the knob"10" is regulated clockwise, the time
increase,conversely,it decrease.It can be selected between 0-10S.
Gas connecting and testing,are generating and are blowing off etc. are all the same as
DC are welding.
12.1.5 PULSE ARGON TUNGSTEN WElDING PROCESS (only for reference)
12.1.6 .Features and application scope of the process .
The pulse type argon tungsten are welding is different from the continuous(DC) argon are
welding.The welding current is pulsed.The wave form of the current is shown in the fol-
lowing sketch.Ip and Ib and their continuous time tp and tb can be regulated ac-
cording to requirements of the process. The amplitude value of electric current
changes periodically with certain frequency in case of the pulse current, molten base
will be formed in the workpiece and the molten bath will be solidified in care of base cur-
rent.The welding seam is formed by reciprocal overlaps. Welding heat input can be
controlled by regulating pulse frequency, pulse current amplitude, size of base cur-
rent,continuous time of pulse current and base current and therefore the welding
seam,size and quality of the zone influenced from heat can be controlled.