Light Industrial Used Powerful DC Pulse TIG Welding Machine PROTIG-250Di   Product Description SPECIALIST FEATURE • Pulse control:
Built in pulsing functions help minimize heat input on thin materials, and provide for a faster freezing weld puddle for uphill welding on curved surfaces such as process piping. The TIG pulse also helps moderate filler metal deposition for consistent bead appearance.
• High-frequency TIG starting:
Makes it easy to establish an arc under a variety of conditions. Enhances quality by minimizing the potential for weld
contamination created by tungsten inclusions in the weld.
• Refined arc ignition from 3A.
• Hot Start Function reliably ignites the electrode and melts perfectly to ensure the best quality even at the start of the seam.
• Arc Force makes it easier to weld large-drop melting electrode types at low current strengths with a short arc in particular.
• Fast Spot Arc system simply controls the spot arc parameter and offers a stable arc.
• 4T Trigger Hold allows to hold the present current by user until press the trigger again.
• Fast, precise, clean arc ignition and arc ending.
• 10 channels memory capacity TECHNICAL SPECIFICATIONS

Item No			PROTIG-250Di
Rated Input Voltage			1PH ~ 230V ±15%
Max. Load Power Capacity			TIG: 6.3 KVA
			MMA: 7 KVA
Rated Duty Cycle(40oC)		60%	TIG: 250A/20V
			MMA: 200A/18V
		100%	TIG: 200A/28V
			MMA: 160A/26.4V
Welding Current/Voltage Range			TIG: 5A/10.2~250A/20V
			MMA: 10A/20.4~200A/28V
Open Circuit Voltage			60V
Power Factor			0.73
Efficiency			80%
TIG	Pulse Frequency		0.2Hz~50Hz
	Pulse Width (Ratio)		1~99
	Arc-starting Current		5A~160A
	Crater-filling Current		5A~200A
	Current Up-slope Time		0.1S~10S
	Current Down-slop Time		0.1S~10S
	Pre-Gas Time		0.1S~5S
	Flow-Gas Time		0.1S~10S
	Spot Arc Time		0.1S~10S
MMA	Arc Force		10A~100A
	Hot Start Time		2S
	Hot Start Current		5A~100A
Dimension (LxWxH)			410X190X305mm
Weight (KG)			15 KG

PULSED TIG CONTROLS   The Pulsed TIG function switches the amperage from a high(peak) to a low(background) at a set rate(PPS). Pulsing can reduce heat input by lowering the average amperage, increasing control of the weld puddle, penetration and distortion. The following parameters can be adjusted for desired results:  

Low-Speed Pulse	High-Speed Pulse
1 to 10 pulses per second(PPS) will produce a distinct ripple pattern in the weld bead. Can be used to time filler addition,reduce distortion and improve control.	100 pulses per second(PPS) and higher helps to focus the arc for increased stability, penetration an d travel speed. Increased puddle agitation improves weld microstructure.

  HOT START   Hot start function reliably ignites the electrode and melts perfectly to ensure the best quality even at the start of the seam. This solution makes lack of fusion and cold welds a thing of the past and significantly reduces weld reinforcement. Adjust the hot start current here and the time here.     Arcforce correction(welding characteristics)   Arcforce is a setting that allows you to adjust the arc to soft smooth arc to a more aggressive digging arc. Setting high is to bump up amperage when you have a really tight arc so that you keep welding.  

ARC FORCE CONTROL

    Company Information FAQ Q:Are you a factory or a trading company?
A: We are factory with more than 10 years manufacturing experience and we provide perfect OEM and after-sale service.

Q:How can I pay my order?
A: We accept T/T, Western Union, Alibaba Trade Assurance payments. For those orders less than 1000USD, we accept PayPal to pay.

Q:How about your warranty?
A: We offer 3-year product life guarantee ,and a generous 1 year warranty on al purchases that begins with the bill of lading.

Q: Do you have a CE certificate?
A: For every model of machine, it has a CE certificate.

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A: We usually quote within 24 hours after we get your inquiry. If you are urgent to get the price,please send the message on trade management or call us directly.