UN Portable Butt Welder

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The UN portable butt welder provides consistent pressure distribution with a high output current. The device is energy saving and enables fast welding speeds with good welding quality. This welder is commonly applied for the welding of metal wires, rods, panels, and other specially shaped metal products. It is especially suited for welding reinforcing bars or other seamless welding jobs.

Features

Vertical pneumatic clamp and pneumatic command lever enable accurate and draw-resistant butt welds
Unique structure with high strength. A track carriage guide with two axes boasts high accuracy and wear- resistance, providing running stability to achieve consistent joint quality.
High secondary volts and microcomputer constant pressure control system for the precise control of the welding time and welding current
High Si content electrical steel sheets allows large current output and is helpful for energy conservation and environmental protection
Chillers at temperatures exceeding the dew point can be set to avoid internal sweating of the machine’s transformer and silicon-controlled rectifier (SCR), preventing electrical shorts.

Parameter

Item	Unit	UN-25	UN-40	UN-63	UN-80	UN-100
Rated voltage	V	380	380	380	380	380
Rated frequency	HZ	50/60	50/60	50/60	50/60	50/60
Rated capacity	KVA	25	40	63	80	100
Rated duty cycle	%	30	30	30	30	30
Insulation class		B	B	B	B	B
Maximum secondary short circuit current	A	8000	12000	20000	24000	28000
Maximum welding power	KVA	35	63	80	100	125
Maximum pressure	N	3900	3900	3900	6100	6100
Maximum forging force	KN	1.5	1.5	1.5	2.5	2.5
Input air pressure	Mpa	0.5	0.5	0.5	0.5	0.5
Cooling water flow	L/min	5	5	5	7	7
Control mode		numerical control