Cleaning the tungsten electrode before welding is crucial to ensure arc stability and weld quality. Here are common methods and precautions for cleaning tungsten electrodes:
Mechanical Cleaning
Use fine sandpaper, a grinding wheel, or a special grinding tip to gently sand the electrode to remove oxide layers and stains, restoring the end to its metallic color and smooth surface. Avoid using rough tools to prevent damage to the electrodes.
Solvent Cleaning
Wipe the electrode surface with oil-free and waterless alcohol or acetone to remove organic contaminants such as grease, oil, and hand sweat. Use a clean lint-free cloth when wiping to avoid secondary pollution.
Avoid Direct Hand Contact
Avoid touching the electrode head directly with your hands during operation to prevent sweat and grease from contaminating the surface.
Keep The Environment Clean
Cleaning operations should be carried out in a dust-free and dry environment to avoid dust and impurities from adhering to them.
Check Regularly
After cleaning, check whether the electrode head is smooth and free of scratches, and the shape meets the requirements of the welding process.
Avoid Using Water Or Water-containing Cleaners
Moisture can cause oxidation of the electrode, affecting welding performance.
Keeping the tungsten electrode clean through the above methods helps to improve arc initiation performance, arc stability, and welding quality, and extend the electrode life.
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