DP-TIG (key-hole) AUTO welding

Deep penetration TIG welding (DP-TIG) process is a new efficient automatic welding process, using a new type of "Keyhole" (small hole) welding technology with special high-power welding torch to solve the problems of traditional TIG arc with low stiffness, shallow melting, low welding efficiency.

Overview: Deep penetration TIG welding (DP-TIG) process is a new efficient automatic welding process, using a new type of "Keyhole" (small hole) welding technology with special high-power welding torch to solve the problems of traditional TIG arc with low stiffness, shallow melting, low welding efficiency.

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TECHNICAL ADVANTAGES

One time with good molding on back penetration：High arc energy & strong arc stiffness, excellent deep penetration welding, all kinds of plates of carbon steel, stainless steel, titanium alloy and other materials can be penetrated well at one time with good molding on back penetration.

Single-side welding & two-sided molding：Full penetration welding mode, compressed arc, using of keyhole effect technology, single-side welding & two-sided molding can be achieved, smooth and beautiful look of welding seam, small deformation.

Quick welding speed：Quick welding speed is faster 3-8 times than traditional TIG welding.

Simpler arc-collection control：Compared with plasma welding process, DP-TIG has no plasma gas control, arc control is simpler and welding is more reliable.

Good controllability：Good controllability and adjustability on arc modulation.

Bigger alignment tolerance：Lower requirements on clearance & unfitness of butt joint, bigger alignment tolerance on workpieces assembly.

Low porosity sensitivity：Low porosity sensitivity, avoiding porosity, small holes and other welding defects.

Save costs：Reduce the amount of multi-layer welding grinding, as well as the use of welding wire, shield gas and other consumables, saving comprehensive costs

No need to open the bevel in welding：The workpiece need not edge beveling, reducing the preparation time before welding, and the welding thickness has obvious advantages.12mm stainless steel plate & 14mm titanium plate can be welded without edge beveling.

TECHNICAL PARAMETERS

Welding technology parameters of austenitic stainless steel and its nickel-based alloys:
Material thickness	Welding current (A)	Welding speed(mm/min)	Allowable welding gap(mm)
3mm	270	500	0.5
4mm	325	350	0.5
6mm	425	300	0.8
8mm	480	280	1.0
10mm	500	240	1.5
12mm	520	220	1.5

Welding technology parameters of carbon steel and its alloy steel:
Material thickness	Welding current (A)	Welding speed(mm/min)	Allowable welding gap(mm)
3mm	380	350	0.5
4mm	400	300	0.5
6mm	450	260	0.8
8mm	500	325	1.0
10mm	560	220	1.5

Welding technology parameters of titanium alloy:
Material thickness	Welding current (A)	Welding speed(mm/min)	Allowable welding gap(mm)
3mm	280	500	0.5
4mm	320	500	0.5
6mm	350	350	0.8
8mm	430	300	1.0
10mm	470	280	1.5
13mm	520	240	1.8
15mm	560	200	2.0
Note:The above welding parameters must be achieved under certain conditions:
	1.Tungsten electrode 6mm;
	2.Shield gas is purified argon,flow rate 20 /min;
	3. The surface oxidation layer and oil pollution on the front and the back of welding area should be removed and clear; 4. The product gap is less than the allowable gap list in the table