Hot Start Ignition
Hot start ignition is a rapid heat transfer that prevents electrode sticking during stick welding and produces a stable arc.
Physikalisch-chemischer Wirkmechanismus
Hot start ignition heats the ignition area abruptly through a functional current surge. This prevents the electrode from sticking and ensures an immediately stable arc that starts the weld.
Metallurgical Relevance & Welding Risks
Missing or too weak hot start ignition can cause the electrode to stick, leading to erratic arcs and poor weld results. This increases the likelihood of porosity and reduces weld strength.
Werkstattpraxis & Handlungsanweisungen
Make sure the hot start ignition is set correctly. Check the current and duration of the ignition phase. A typical setting is a current surge of 10 to 20 amps for 50 to 100 milliseconds. Adjust these values to the specific conditions of the welding process and the materials used.