Flux-coated stick electrode
A stick electrode with a protective coating that forms gases and slag when melting. It shields the arc and deliberately alloys the weld metal.
Physico-chemical mechanism of action
The flux-coated stick electrode consists of a core that performs the actual electrolysis and a coating that contains liquids. These liquids react with the metals when melting and form gases and slag that are blown off. The coating also protects against corrosion and prevents unwanted alloys.
Metallurgical relevance & risks in welding
Correct use of this electrode ensures a clean weld without pores and cracks. A faulty coating can lead to corrosion of the electrode or cause unwanted alloys, which impairs strength. It is important that the liquids are correctly dosed and do not spill during application.
Workshop practice & instructions
Use the electrode in a clean environment and make sure the coating is intact. Ensure that the liquids are correctly dosed and do not spill during application. Use appropriate voltage and always keep the electrode dry.