Manual Metal Arc Welding
Stick welding is a manual welding process using covered electrodes that form slag to protect the weld area from atmospheric influences. It is often used for fine welding.
Physico-chemical mechanism of action
Stick welding uses an electrode that is coated and contains a rod. The electrode is placed against the workpiece and electrified. The current causes a reaction between the metal and the flux, melting the metal and forming a joint.
Metallurgical relevance & risks in welding
The slag forms during welding and protects the freshly formed weld from corrosion and other atmospheric influences. Improper handling or excessive voltage can lead to overheating and distortion of materials, posing risks to weld strength and structure.
Workshop practice & instructions
Use stick welding for fine welding. Ensure the electrode is properly coated and the weld pool is clean. Maintain constant voltage and cool the weld slowly to ensure a homogeneous joint.