MZ7 Series of IGBT Inverter Submerged Welding Machine

Features

★ Soft switch technology, high efficiency, energy saving

★ Automatic switch off while the machine is in over current, overheat, over/under-voltage

★ Multifunctional: SAW, MMA, Gouging

★ Small, light, and easy to operate

★ CC/CV, can weld thin wire like 1.6-2.4mm as well as the general wire of 3-5mm

★ Can be used with column and boom

Process

1.Main parameters of power source

	MZ7-1000	MZ7-1250		MZ7-1600	MZ7-2000
Input power	3-phase 380V /415V 50Hz
Rated input power	59KVA	73KVA		93.9KVA	114KVA
Rated input current	90A	111A		143A	172A
Welding curr.	1000A 80%DE	1250A80%DE		1600A 80%DE	2000A 80%DE
Welding curr.	890A100%DE	1100A 100%DE		1400A100%DE	1550A100%DE
No-load voltage	90V	92V
Welding curr.	40-1000A	60-1250A		80-1600A		100-2000A
Diameter of wire	Φ3-5mm	Φ3-6mm				4-6mm
Wire feeding speed	50-460cm/min
Welding speed	0-120cm/min
Capacity of flux container	10L
Capacity of wire container	20Kg
Weight of tractor	45Kg
Air switch	100A		160A				225A
Input cable	3 x 16mm²
Insulation grade	F
Raising means	Lift
Protection grade	IP21S

2.Feature of tractor

MZ7 automatic submerged arc tractor and power source jointly consist of “automatic submerged arc welder”, which can be used in butt joint, lap joint, and corner joint of middle/thick steel structure. It can weld carbon steel, low alloy steel, stainless steel, and heat-resistant steel, etc.

(1) Front and back wheels of the tractor can move simultaneously, march stably, wide welding range, with diameter of welding wire being Ф3.0~Ф6.0mm

(2) Easy and flexible to do adjustment, integral turning of head and uplifted welding torch

(3) Beam can turn around and uplift

(4) Turnaround and fluctuation angle of the flux container can be adjusted

(5) The wire feeding instrument is equipped with alignment structure, feeding wire stably, good adjustment range, big pull, strong in wire feeding

(6) Print motor is adopted as the wire-feeding motor and marching motor, small default, long service life (the common pilot motor)

3.Technical parameter

Items	Parameter
Rated input voltage of marching part	Pilot motor DC110V (PMG), printing motor DC36V
Rated input voltage of wire feeding part	Pilot motor DC110V (PMG or exciter), printing motor DC36V
Feeding means of wire	Variable speed or equivalent speed wire feeding
Welding speed	0.2-1.5m/min
Wire feeding speed	0.3-3.0m/min
Rated welding current	630A, 800A, 1000A, 1250A
Diameter of wire	Φ1.6~Φ2.0/Φ3.0~Φ5.0
Vertical adjustment range of beam	100mm
Adjustment range of head	100´100´70 (up and down, right and left, back and front)
Turning angle of beam around the tractor	±90°
Deflextion angle of welding torch	±45°
Deflextion angle of head	±90°
Capacity of flux container	6L
Capacity of wire container	20kg
Dimensions (mm)	1020´480´740
Weight	54kg