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Secondary Adjustable Variables

These variables cause changes in primary adjustable variables 
which in turn cause the desired change in the bead formation. 

They are:
1. 

Stick-Out - 

(distance between the end of the contact tube (tip) and 

the end of the electrode wire). Maintain at about 10mm stick-out

2. 

Wire Feed Speed - 

increase in wire feed speed increases weld 

current. Decrease in wire feed speed decreases weld current.

3. 

Nozzle Angle - 

This refers to the position of the welding gun in 

relation to the joint. The transverse angle is usually one half the 
included angle between plates forming the joint. The longitudinal 
angle is the angle between the centre line of the welding gun and 
a line perpendicular to the axis of the weld.

Establishing the Arc and Making Weld Beads

Before attempting to weld on a finished piece of work, it is 
recommended that practice welds be made on a sample metal of 
the same material as that of the finished piece.

The easiest welding procedure for the beginner to experiment 
with MIG welding is the flat position. The equipment is capable of 
flat, vertical and overhead positions.

For practicing MIG welding, secure some pieces of 16 or 18 gauge 
(1.5mm or 2.0mm) mild steel plate (150 x 150mm). Use (0.8mm) flux 
cored gasless wire or a solid wire with shielding gas.

Setting of the Power Source

Power source and Current (Wire Speed) setting requires some 
practice by the operator, as the welding plant has two control 
settings that have to balance. These are the Current (Wire Speed) 
control and the welding Voltage Control.

The welding current is determined by the Current (Wire Speed) 
control, the current will increase with increased Current (Wire 
Speed), resulting in a shorter arc. Less Current (Wire Speed) will 
reduce the current and lengthen the arc. Increasing the welding 
voltage hardly alters the current level, but lengthens the arc. 
By decreasing the voltage, a shorter arc is obtained with a little 
change in current level. 

When changing to a different electrode wire dia eter, different 
control settings are required. A thinner electrode wire needs 
more Current (Wire Speed) to achieve the same current level.

A satisfactory weld cannot be obtained if the Current (Wire 
Speed) and Voltage settings are not adjusted to suit the electrode 
wire diameter and the dimensions of the work piece.

If the Current (Wire Speed) is too high for the welding voltage, 
“stubbing” will occur as the wire dips into the molten pool and 
does not melt.

Welding in these conditions normally produces a poor weld due 
to lack of fusion. If, however, the welding

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voltage is too high, large drops will form on the end of the wire, 
causing spatter. The correct setting of voltage and Current (Wire 
Speed) can be seen in the shape of the weld deposit and heard 
by a smooth regular arc sound.

Electrode Wire Size Selection

The choice of Electrode wire size and shielding gas used 
depends on the following:
•  Thickness of the metal to be welded
•  Type of joint
•  Capacity of the wire feed unit and power source
•  The amount of penetration required
•  The deposition rate required
•  The bead profile desired
•  The position of welding
•  Cost of the wire

MIG 200

OWNER’S MANUAL

Summary of Contents for MIG 200

Page 1: ...MIG 200 OWNER S MANUAL www duralloy net au 1300 369 456 ...

Page 2: ...peration DURALLOY product is subject to stringent quality control and designed and manufactured to EN60974 1 2012 standards Common use of DURALLOY products include Light Engineering Automotive Home Hobby Engineering Farming Industrial Maintenance Repairs For industrial welding solutions check out the DURALLOY at www duralloy net au DURALLOY is a market leading provider of innovative power equipmen...

Page 3: ...uralloy net au 1300 369 456 CONTENTS Know Your Machine Quick Start Guide Wiring Diagram Care Maintenance Welding Settings Basic MIG Welding Guide Safety Warranty 5 7 9 10 10 11 16 21 3 MIG 200 OWNER S MANUAL ...

Page 4: ...Fascia cover IP23 Rating MIG EN60974 1 2012 APPLICATIONS Maintenance General Fabrication Rural Applications On site Fabrication MATERIALS Mild Steel Aluminium Stainless Steel PACKAGE INCLUDES Power Source 3M MB 24 Style MIG Torch 3M Earth Lead 1 5M Gas Hose Argon Regulator Owner s Manual 0 9 1 2 FC Roller for Gasless Wires 3 YEAR WARRANTY MIG 200 OWNER S MANUAL SPECIFICATIONS Power Supply 1 220 23...

Page 5: ...ed Speed Current Display Meter Displays wire feeding speed in m minute prior to welding during welding displays welding current output Display Meter Displays welding voltage Overload Error Indicator Lights when over voltage over current or electrical overheating due to exceeding duty cycle is detected and protection is activated When protection is activated welding output will be disabled until th...

Page 6: ...sired heat input for the weld it is likely that a change in wire size and or shielding gas type is required assuming all other factors are correct Wave Control This setting changes the MIG waveform to simulate changing the inductance of the welding circuit Inductance controls the rate of the current rise and fall as the welding wire contacts the workpiece known as a short circuit More inductance i...

Page 7: ...retainer 1 6 Once the correct drive rollers are selected and fitted manually feed the wire through the wire drive inlet guide through the www duralloy net au 1300 369 456 drive roller grooves and into the brass outlet wire guide tube Ensuring that the wire is correctly seated in the drive roller grooves replace the wire feed tension arms and lock them into place by rotating the wire feed tension a...

Page 8: ...he machine Ensure all connections are tight Open gas cylinder valve and adjust regulator flow should be between 10 25 l min depending on application 3 4 Set the welding voltage adjustment knob 2 wire speed control knob 1 and wave control knob 9 to the desired positions You are now ready to weld www duralloy net au 1300 369 456 8 Note MIG welding with aluminium provides a unique challenge due to th...

Page 9: ...www duralloy net au 1300 369 456 WIRING DIAGRAM 9 MIG 200 OWNER S MANUAL ...

Page 10: ...ce with relevant safety standards Only experts must carry out repairing of electrical appliances otherwise considerable danger for the user may result Use only genuine replacement parts Do not use modified or non genuine parts Storing the Welder When not in use the welder should be stored in the dry and frost free environment WARNING Before performing cleaning maintenance replacing cables connecti...

Page 11: ...e parts to be welded by heating them with an arc between a continuous flux filled electrode wire and the work Shielding is obtained through decomposition of the flux within the tubular wire Additional shielding may or may not be obtained from an externally supplied gas or gas mixture The process is normally applied semi automatically however the process may be applied automatically or by machine T...

Page 12: ... in the GMAW process are controlled by these variables Preselected Variables Preselected variables depend upon the type of material being welded the thickness of the material the welding position the deposition rate and the mechanical properties These variables are Type of electrode wire Size of electrode wire Type of gas Gas flow rate Primary Adjustable Variables These control the process after p...

Page 13: ...nt Wire Speed control and the welding Voltage Control The welding current is determined by the Current Wire Speed control the current will increase with increased Current Wire Speed resulting in a shorter arc Less Current Wire Speed will reduce the current and lengthen the arc Increasing the welding voltage hardly alters the current level but lengthens the arc By decreasing the voltage a shorter a...

Page 14: ...orosity within the weld metal Porosity always stems from some contaminant within the molten weld pool which is in the process of escaping during solidification of the molten metal Contaminants range from no gas around the welding arc to dirt on the workpiece surface Porosity can be reduced by checking the following points MIG WELDING TROUBLESHOOTING WARNING Disengage the feed roll when testing for...

Page 15: ...www duralloy net au 1300 369 456 15 Other weld problems can be reduced by checking the following points MIG 200 OWNER S MANUAL ...

Page 16: ... with bare hands Do not wear wet or damaged gloves 6 Protect yourself from electric shock Do not use the welder outdoors Insulate yourself from the work piece and the ground Use non flammable dry insulating material if possible or use dry rubber mats dry wood or plywood or other dry insulating material large enough to cover the area of contact with the work or the ground 7 Avoid inhaling dust Some...

Page 17: ...quipment serviced by a qualified repair person using identical replacement parts This will ensure that the safety of the power tool is maintained www duralloy net au 1300 369 456 Personal Safety CAUTION Keep the work area well lit Make sure there is adequate space surrounding the work area Always keep the work area free of obstructions grease oil trash and other debris Do not use equipment in area...

Page 18: ...reheating welding or cutting www duralloy net au 1300 369 456 Electricity Can Kill DANGER Touching live electrical parts can cause fatal shocks or severe burns The electrode and work circuit is electrically live whenever the output is on The input power circuit and machine internal circuits are also live when power is on In semi automatic or automatic wire welding the wire wire reel drive roll hou...

Page 19: ...k in a confined space only if it is well ventilated or while wearing an air supplied respirator Shielding ga es used for welding can displace air causing injury or death Be sure the breathing air is safe 6 Do not weld in locations near degreasing cleaning or spraying operations The heat and rays of the arc can react with vapours to form highly toxic and irritating gases 7 Do not weld on coated met...

Page 20: ...t use a welder to thaw frozen pipes 10 Remove the stick electrode from the holder or cut off the welding wire at the contact tip when not in use Sparks Hot Metal WARNING Chipping and grinding causes flying metal and as welds cool they can throw off slag 1 Wear an AS NZS approved face shield or safety goggles Side shields are recommended 2 Wear appropriate safety equipment to protect the skin and b...

Page 21: ...s Ancillary Equipment 3 months WARRANTY Duralloy Welding Equipment Plasma Cutting Range The Obligation of Duralloy Industrial Supply under this warranty is limited to the circumstance set out above and is subject to The customer being able to provide proof of purchase of the relevant equipment A defect in either material or workmanship The customer returning the product to Duralloy Industrial supp...

Page 22: ...www duralloy net au 1300 369 456 22 MIG 200 OWNER S MANUAL ...

Page 23: ...www duralloy net au 1300 369 456 23 MIG 200 OWNER S MANUAL ...

Page 24: ...www duralloy net au 1300 369 456 ...

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