To judge whether the tungsten electrode is qualified, it is necessary to start from the appearance quality, but also to comprehensively evaluate the performance indicators and actual welding performance.
First of all, a qualified tungsten electrode should have a smooth surface without obvious cracks, porosity, inclusions or color spots. The diameter and length of the electrode should meet the relevant standard tolerances, and the tip should be uniform and burr-free. The content and uniformity of doped elements must meet the design requirements, which is related to the arcing performance and service life of the electrode.
Secondly, through performance testing, such as arc voltage testing, electrode head ablation degree evaluation, etc., the performance of the electrode in actual welding can be judged. The qualified electrode should be within the specified current range, with rapid and stable arc starting, stable arc combustion and low burnout rate. In addition, the electrode should have good thermal stability and mechanical strength, and is not easy to crack or deform due to high temperatures.
Finally, choosing reputable manufacturers and products that comply with international standards (such as AWS A5.12, EN ISO 6848) is an important guarantee to ensure the quality of tungsten electrodes. Only by combining the testing and judgment of these aspects can we ensure that the tungsten electrode used meets the welding process requirements and ensure the quality and safety of welding.
More details of tungsten electrodes, please visit website: http://tungsten.com.cn/tungsten-electrodes.html
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