Arc Abrasion and Line Feeding Process
Arc abrasion can be a difficult process to master, as it requires the operator to position a small, controlled electric arc of high power between an electrode and the workpiece. This arc of electricity creates an intense heat that melts the surface of the material and causes it to vaporize. The vaporized material is then quickly cooled by the electrode and forms small, abrasive particles. These abrasive particles act like tiny sandpaper, removing surface material from the workpiece and thus forming small, milled grooves. This process is used to create a variety of intricate shapes, sizes, depths and finishes with the added benefit of being able to etch and mark other materials including metals, glass, wood and ceramic.
Line feeding is an essential part of the arc abrasion process. It is the method used to control the speed and size of the arc. Proper line-feeding makes it possible to create precise shapes, finished and deep grooving. By controlling the size and speed of the arc, the operator can adjust the quality and finish of the workpiece.
The most common way to line feed is to use a foot pedal connected to the machine’s power source. This allows the operator to easily adjust the speed and size of the arc using a pedal with their feet. The operator can also adjust the voltage and amperage of the arc—directly from the machine—for more precise control.
Another common method of line feeding is the use of a hand-held controller. By using this method, the operator is able to vary the size and speed of the arc without having to stop the process. Hand-held controllers are usually used for more intricate and time sensitive projects where the operator wants ultimate control over the performance of the machine.
Finally, it is important to note that proper communication between the operator and the machine is essential. On each machine, there are controls and monitors to alert the operator to any problems or changes with the machine. It is the job of the operator to make sure these controls and monitors are used correctly to ensure the desired outcome.
When done correctly, arc abrasion and line feeding can produce high quality results. It is important for the operator to remember that safety should always be the number one priority. Properly set up the machine, understand the controls and the types of materials the machine can work with, and use the appropriate protective gear. With the right precautions and care, arc abrasion and line feeding can produce wonderfully intricate results.
