What should the welder ensure when selecting the cleaning compound for tungsten electrodes?

When selecting a cleaning compound for tungsten electrodes, it is essential to choose one that is suitable for the specific type of tungsten being used. Tungsten electrodes can vary in composition, such as pure tungsten or tungsten alloys with different elements like thorium, cerium, or lanthanum. Each type may have different cleaning requirements to effectively remove oxidation or contaminants without damaging the electrode.

Using a suitable cleaning compound helps to maintain the integrity of the tungsten tip, ensuring proper electrical conductivity and stable arc characteristics during welding. The correct cleaning method also contributes to achieving high-quality welds, as a clean tungsten surface promotes better arc stability and reduces the risk of impurities being introduced into the weld pool.

Choosing a cleaning compound solely based on cost, as suggested in one of the other options, may lead to ineffective cleaning or harm the tungsten. Similarly, a cleaner containing base metals or a standard household cleaner may not be formulated to address the specific cleaning needs of tungsten electrodes, potentially compromising their performance. Therefore, the focus should always be on compatibility and effectiveness relative to the type of tungsten used.