Lincoln Electric SVM158-A service manual Pulse Programs, Pulse on Pulse

B-8 B-8

OPERATION

PULSE PROGRAMS:

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	MODE	Range (IPM*)
.030	Steel	65	- 1200
.035	Steel	55	- 800
.045	Steel	50	- 700
.052	Steel	75	- 550
.045	Metal Core	50	- 650
.052	Metal Core	50	- 500
.030	Stainless Ar Blends	85	- 770
.030	Stainless He Ar CO2	110 - 770
.035	Stainless Ar Blends	65	- 770
.035	Stainless He Ar CO2	75	- 770
.045	Stainless Ar Blends	50	- 600
.045	Stainless He Ar CO2	50	- 600
.035 Aluminum 4043		100 - 700
.035 Aluminum 5356		115 - 740
3/64 Aluminum 4043		80	- 550
3/64 Aluminum 5356		85	- 700
1/16 Aluminum 4043		75	- 325
1/16 Aluminum 5356		75	- 450

.035 Nickel Alloys (Non Adaptive)	80 - 700
.045 Nickel Alloys (Non Adaptive)	75 - 550

COMMENTS

The V350 pulse programs are non-synergic and allow independent control of the wire feed speed (at the wire feeder) and the arc length. The Output Control Knob on the V350, adjusts an "SPD" value. Similar to trim, the "SPD" value indicates the relative arc length setting. The "SPD" value displayed on the V350 may not match the actual wire feed speed! The value of "SPD" is meant to be a point at which to set the arc length relative to the wire feed speed and should be set the same as actual speed for a starting point. Depending on the application, the "SPD" value can be adjust- ed to obtain the desired arc length. Refer to the detailed explana- tion at the end of this section.

The operation of the Arc Control knob on the V350 is similar to the PowerWave series. As Arc Control is increased, the frequency is increased and the background reduced. Decreasing Arc Control will reduce frequency and increase background current. Arc Control acts to fine tune the arc plasma to the specific application.

Preferred gas selections:

Steel Argon Blends = Argon with CO2 additions from 2 to 20 % or Oxygen additions from 2 to 5%.

Stainless Argon Blends = Argon with Oxygen additions up to 2%.

Stainless He Ar CO2 = ~ 90% Helium, 7 1/2 % Argon 2 1/2 CO2 Aluminum 100% Argon

The Nickel Alloy pulse programs are non adaptive. The operator sets the output control knob to deliver the correct arc length at desired wire feed speed and stick out. While welding, the operator manipulates the stick out to maintain the correct arc length. This method of operation produces very stable arc performance consid- ering the nature of nickel alloys.

Preferred gas: Argon/Helium Blends = for the best results add helium to the argon base from 0-25%.

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					PULSE ON PULSE
.035 4043		(4x	Pulse on Pulse)	120 - 600		Arc Control = Pulse on Pulse frequency. For faster travel
	3/64 4043	(4x	Pulse on Pulse)	85 - 400		speed welds, the arc control should be increased.
	.035 5356	(5x	Pulse on Pulse)	130 - 700		For larger puddle, slower travel speeds, the arc control
	3/64 5356	(5x	Pulse on Pulse)	100 - 550		should be decreased. Refer to the detailed explanation at the
						end of this section.
*IPM (INCHES PER MINUTE)

V350-PRO