| PART NO. | GR-TEL | |
| APPLICATION | ELECTRODE GRINDER / SHARPNER | |
| VOLTAGE | AC220V | |
| CLAMPS | 3 CLAMPS FOR 1.6MM, 2.4 MM, 3.2 MM | |
| CERTIFICATION | ISO-9001 |
1.The right sharpening direction for tungsten electrodes: axial instead of radial
When sharpening the TIG welding electrode, the grinding direction is decisive: If the grinding is transverse, i. e. radial to the welding electrode, a wide arc cone is generated. The penetration depth is then smaller, which as a result leads to root binding errors, for example in the case of an i-joint. If, on the other hand, the cut is longitudinal to the electrode, i. e. axially, the arc is more focused, enables deeper penetration and thus makes it easier for the weldder to apply the energy with pinpoint accuracy.
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There is a rule of thumb: the tip of the tungsten electrode should be twice as long as its diameter.
2. Sharpening at the correct angle
You get the best welding result with the correct grinding angle. The sharper the TIG welding electrode is ground, the more targeted and narrow the penetration. At the same time, however, the load on the electrode tip is extremely high, which in turn limits its service life. With an extreme peak of, for example, 30 °, tungsten can get into the weld pool and then contaminate it. If, on the other hand, the tungsten electrode is blunt-pointed and you weld with it at the same welding current as with the sharpened electrode, the penetration is wider and less focused. We recommend a grinding angle of 60 ° for TIG welding electrodes in order to achieve the best welding results.
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