Electrode's conditions afterwelding. Lists
Understanding behaviors of electrdoes during arc welding processes are very important factor to keep optimum condition.
You can enjoy another unique SEM images after arc welding.
| SEM images taken by Prof.Yang. | |||
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| 1. Details on EDX pictures. | Effects of temperature distribution during arc weldin on electrode's surface. Tungsten in green(left) and Thorium in red(right). |  |
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| 2. result after Ar200A15min | Electrode after 200A welding for 15minutes. |  |
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| 3. 2%ThW(Nano-1B)Ar | Special treated electrode. |  |
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| 4. 2%ThW(Normal)Ar | Normal picture after long time proper usage. |  |
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| 5. 2%ThW(Normal)He | Normal picture after long time usage. |  |
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| 6. pureW_Ar | Tip of elctrode is melting, because pure tugsten needs high temperatur to ignite electrons. |  |
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| 7. 2%CeW_Ar | Surface is meltin during welding. |  |
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| 8. 2%ThW(Normal)He | Thorium growth after helium arc. |  |
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| 9. 2%ThW(Nrml2)He | Typical image in Helium shield. |  |
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| 10．2%CeW_He | Afrter bad welding conditon. |  |
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| 11．2%ThW(Nrml)Ar+He | Electrode after long time usage without polishing. |  |
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| 12．2%ThW(Normal)Ne | Welding in Neon gas. |  |
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