Full Product Manual

TUNGSTEN SHARPENING

• Use a dedicated grinding wheel or contamination may result. Do not breath grinding dust! Wear eye protection and gloves.

• Grip the Tungsten rmly.

• Grind the Tungsten perpendicular to the wheel face. Allow tungsten to grind slowly without much pressure.

• Rotate the Tungsten quickly as it is being ground to keep the point even and symmetrical.

• Alternatively you may use a drill to hold the Tungsten. Rotate slowly.

• Do not grind the Tungsten parallel to wheel face or an unstable arc will result.

• Use a point for low amp use to help control arc. Create a slight truncation on the tip for higher amp use for best arc stability.

Grind the tip so that it is 2.5- 3 times longer than the tungsten is wide (Diameter).

• Do not ball the Tungsten while welding, or an erratic arc will result. Make sure that the grinding marks run parallel to the tip.

Concentric marks will also cause an erratic arc.

>50 A

<50 A

2.5 – 3 X Ø (DIAMETER)

TUNGSTEN SELECTION AND SHARPENING

Section 3 Basic Theory and Function

TUNGSTEN SELECTION

This unit is an inverter based welder. Tungsten types traditionally used in a Transformer machine do not work well and have issues

with melting and splitting. Pure Tungsten (Green) should never be used with this unit. Arc quality and stability will suffer, along

with over balling of the tungsten will result. Zirconiated (usually brown) has similar issues. Thoriated 2% (Red) Tungsten works

well with both AC and DC modes in inverters but tends to split at higher amperages in AC, or forms small nodules on the tip.

Consider the following tungsten types for use in this welder:

• Lanthanated 2% (Blue). Works great for AC or DC. Holds up good to higher inputs. Best for use in Power-Set mode at ex-

treme Amps. Excellent arc starts. 1.5%

• Ceriated 2% (Orange or Gray). Works great for AC or DC. Begins to fade at higher Amps. Great arc starts at low amps.

• Rare Earth or Tri-Mix (Purple). Generally great and holds good point. However some quality issues have been reported with

wide range of allowable percentages of rare earths. Primary rare earth component is usually an 1.5% oxided form of Lantha-

num (Lanthanated). Secondary rare earths are usually Zirconia and Ceria oxides ranging from .04 to .08% composition.

Some feature Yttrium as a secondary component. Use quality, well known sources.