MZ7-1000TG5 All-digital SAW Machine (Super Low Heat Input)

Main Features

• Automatic switch off fromphase lack, overcurrent, overheating, and over/undervoltage
• Accurate preset of welding current, voltage, and walking speed
• With constant current/constant voltage, suitable for welding both thin and thick wire
• Automatic identification of arc initiation through fixed-point contact and sliding friction, with fast arc initiation speed and stable arc combustion
• Automatic wire feeding detection, wire feeding will stop aromatically when it is in good contact with the workpiece; Press Wire Feeding or Wire Back without releasing, wire sending or wire drawing back will automatically accelerate. Wire retraction will realize automatically when welding ends
• Manual wire feeding/wire retraction, with both slow and full speed modes, can be freely switched to effectively improve production efficiency
• Automatic wire withdrawal upon arc stop, effectively preventing thermal adhesion between welding wire and workpiece
• Double closed-loop control, with a constant melting depth system, melting depth is divided into four levels: large, medium, small, and standard
• The control PCB of the power supply adopts chopper technology to accurately control the heat input. For example, normal welding can be realized with4mm welding wire, 600A welding current , and 25V welding voltage  
• Can weld carbon steel, stainless steel, nickel based and other metals, with beautiful weld formation, and can also be welded by surfacing

The whole machine adapts to a wide range of grid voltage: 280V-450V

Technical Parameter

1. Tractor Features

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)

2. Technical parameter

Introduction to control panel of the tractor

1. Marching speed meter: show the marching speed
2. Voltmeter: show the actual output voltage
3. Ammeter: show the actual output current
4. Marching speed knob of tractor: while being rotated clockwise, the marching speed will become higher, or it will become lower
5. Wire-feeding button: touch the button, the wire will be feed slowly; if the button is pressed for about 3 seconds, the wire feeding will speed up. If the wire touches the workpiece well, the wire-feeding will stop automatically. If you need to send wire compulsively, you can press the button and touch “Wire Back” button.
6. Wire back button: touch the button, the wire will be sent back slowly; if the button is pressed for about 3 seconds, the wire back will speed up.
7. Welding voltage knob: adjust it clockwise while doing welding, the voltage will become higher, or it will be lower
8. Marching button: touch the button, the tractor will begin to move and the welding speed can be set in advance at this time
9. Forward/Backward knob: being put on the position of “Forward”, the tractor will move forward; being put on the position of “Backward”, the tractor will move backward.
10. CC/CV knob: CV (short for Constant Voltage) is mainly for general SAW welding with wire of 3-5mm, CC (short for Constant Current) is selected while thin sheet, stainless steel sheet is welded or thin wire of 1.6-2.8mm is used
11. k. Welding current knob: while doing welding, adjust it clockwise, the welding current will increase, or it will decrease
12. l. Welding button: touch the button while needing doing welding, the tractor will begin to move and the welding will begin.
13. m. Stop button: touch the button, the tractor will stop moving and the welding will also stop.If the welding continue or the wire is stuck to the torch after touch the button in welding, press the button for 2 seconds, and then the welding will be stopped compulsively.