Electrode for aluminium and Al-Mg materials, CHEM-WELD 800

Product detailed description

CHEM-WELD 800

Electrode for aluminium and its alloys up to Mg content of 3%

Very light welding electrode for welding and cladding of Al-Mg-Mn alloy steels up to 3% Mg content. High melting performance, light flux, smooth weld joints with colouring as base material. High strength. Applicable for aluminium sheets from 2 mm. For thicknesses above 5 mm, 80-150°C preheating must be used.

Applications: tanks in the food industry, pipelines, cylinder heads, engine blocks, oil pans, compressors, racks, ship masts..

How to weld aluminium with electrode?

CHEM-WELD's specific aluminum electrode coating reacts with aluminum oxides to form a protective gas shield over the weld bath, which reduces oxygen absorption and thus significantly prevents the formation of inclusions.

When welding aluminium with an electrode, it is necessary to remove the aluminium oxide by cleaning the welded parts (removal of dirt, degreasing and grinding). Also clean the surface of the material at the clamping point of the grounding clamp. The actual welding must follow immediately after cleaning, otherwise the material will be degraded again. Only dried electrodes should be used due to possible hydrogen problems and subsequent porosity of the weld.

Material up to thickness of. 5-8 mm can be welded without preheating, larger thicknesses with 80-250°C preheating.

Connect the welding cable with the electrode to the + pole. Set the welding parameters. Use the HOT START function to ignite the electrode, if the welding machine allows it, setting the welding parameters to approximately 130% of the standard welding current. Guide the electrode perpendicular to the material to be welded. Weld with a very short arc at a higher speed. If the weld shape is high, it is necessary to use preheat, or increase the welding current, or increase the welding speed. The slag formed can be easily removed, thus eliminating the formation of corrosion.