INVERTER PLASMA CUTTER IGBT 40 – CUT 40
|ITEM||CUT 40 IGBT PLASMA CUTTER INVERTER|
|Current range (A)||15-40|
|Rated input current(A)||22|
|Rated output (voltage)V||96|
|Max Effective Current||22A|
|Housing grade protection||IP21S|
|Arc way||Touch arc|
|Pressure of air compressor(KG)Thickness ( mm)||4-51-12|
|Step 1. Place the drag shield on the edge of the base metal, or hold the correct standoff distance (typically 1/8 in.). Direct the arc straight down. (Dragging the tip will reduce tip life).||
|The arc starts immediately when trigger is pressed.Step 2. Raise the trigger lock, press the trigger and the pilot arc starts immediately.||
|Step 3. Once the cutting arc starts, begin to slowly move the torch across the metal.||
|Step 4 . Adjust your speed so sparks go thru metal and out bottom of cut.If the sparks are not visible at the bottom of the plate, the arc is not penetrating the metal. This can be caused by moving the torch too quickly, insufficient amperage or directing the plasma stream at an angle (not straight down). Insignificant grounding can also cause this problem.||
|Step 5 . At the end of a cut, angle the torch slightly towards the final edge or pause briefly before releasing trigger to completely sever the metal.||
|Step 6 . To cool torch, post-flow air continues for 20 – 30 seconds after releasing the trigger; pressing the trigger during post-flow instantly restarts the arc.||
Traveling at the right speed produces a very clean cut with less dross on the bottom of the cut, as well as little or no distortion to the metal. If the travel speed is too slow, the material you are cutting may become hot and accumulate more dross. To minimize dross, increase travel speed or reduce amperage (for an indication of how fast to move the torch, refer to the machine’s cutting speed graph or check the speed for a rated cut). Dross also accumulates when you push a machine to its maximum thickness. The only cure for this is a bigger machine.
Gouging and Piercing Techniques
To gouge — to remove old welds or imperfections — hold the torch at a 40 to 45° angle to the base metal. Establish an arc length of 1 to 1-1/2 in. and move the torch across the metal, adjusting torch speed, arc length and angle as needed. Direct sparks away from the torch, and do not gouge too deeply on one pass. Make multiple passes if needed.
To pierce metal — creating a hole, such as to start coping or insert a valve — place the torch at a 40 to 45° angle to the work piece. Press the trigger. After the machine initiates the cutting arc, bring the torch tip to a 90° angle and the arc will pierce the base metal. Generally, a machine can pierce metal up to one-half of its maximum cutting thickness. Powerful machines pierce 1/4 in. steel within a second or two.
If you select the appropriate plasma cutter and service it properly, you can experience years of trouble-free performance. In fact, most “problems” with plasma cutting relate to other systems (air, consumables), not the machine itself. Most importantly, almost every person who cuts with a plasma machine gets hooked on the technology. They couldn’t be paid to go back to other cutting methods.