DirectArcTM Controls and Probes

 

MA-40 Arc Pattern Control

This unit adds a new dimension to magnetic arc control: pattern control. With the MA-40, the welding arc can be shaped, widened or narrowed as required. The rapid, controlled motion of the arc stirs the molten puddle for a noticeable reduction in porosity and improvement of the grain structure in the weld.

The MA-40 Control Unit provides two-axis magnetic arc control with independent amplitude and position control for each axis. A stabilize mode with amplitude and position control adjustments is also available for one-axis oscillation.

All probes include simple, secure mounting provisions and can attach to most welding torches in minutes. Water-cooling hoses (where required) and probe cables are part of each probe assembly. See the controller/probe compatibility chart for system details.

  DirectArc MA-40 Control

MP-4 Probe

With four independently controlled magnetic coils, the MP-4 probe is the most flexible for weld bead profiling. It is used with the MA-40 control unit only. The Arc Products MA-40 Control Unit and MP-4 Probe provide the ability to shift the entire arc pattern relative to the weld seam with position controls.

The MA-40 Control Unit and MP-4 Probe provide the ability to shift the entire arc pattern relative to the weld seam with position controls, as shown below.


  DirectArc MA-40 Control

 

Arc Pattern Relative to Weld Seam

  1. Straight line oscillation along seam
  2. Elliptical pattern along seam symmetrical
  3. Circular pattern symmetrical
  4. Elliptical pattern across seam symmetrical
  5. Straight line oscillation across seam
  6. Elliptical pattern across seam offset
  7. Circular pattern offset
  8. Elliptical pattern along seam offset
  9. Straight line oscillation across seam offset

 

MA-20 Arc Control

Our most popular controller, the MA-20 features a PWM power supply and adjustable oscillation speeds from 7 per minute to 30 per second. Independently controlled left and right dwell settings create a weave effect, allowing maximum flexibility when working with an uneven work piece. A Stabilize/Oscillate switch allows you to disable the speed and dwell controls while the position and amplitude controls remain operative. Final Taper gradually reduces magnetic field during welding down-slope.

All probes include simple, secure mounting provisions and can attach to most welding torches in minutes. Water-cooling hoses (where required) and probe cables are part of each probe assembly. See the controller/probe compatibility chart for system details.


  DirectArc MA-20 Control

MP-1 Probe

The MP-1 is a single-tip, water-cooled probe that adapts to conventional torches. The MP-1 works well in tight clearances and is primarily used to weave the arc across the seam or to stabilize the arc.


  MP-1 Probe

MP-2 Probe

The dual-tip MP-2 slips over a conventional TIG torch and can be used either for cross-seam weaving or in-line weaving. In-line weave is primarily used in tube mills to preheat the tube, giving increased weld travel speeds.


  MP-2 Probe

MP-22 Probe

Use the MP-22 probe with the MA-20 control unit only. This twin-tip side-mount unit is capable of delivering the full 600 gauss magnetic field to the welding arc area. Though normally used in an air-cooled mode, if necessary, the MP-22 can also be water-cooled.


  MP-22 Probe
DirectArc Probe Chart