Hardfacing, T-Bone and others

NC Wayne

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11-12-22:02:00

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Welding Techniques and Best Practices

Reflecting on my time in the field, I've examined the technical data provided by Stoody, which specifies a requirement of 100-120 Amps for the 1/8 rod. It is essential to note that the documentation mentions the optimal usage of DC+ as the primary polarity followed by AC. When manufacturers present the options this way, it usually indicates that the first option is the recommended approach for the best results. Using the incorrect polarity can lead to undesirable outcomes, such as concentrated heat on the rod rather than the base metal. However, since you are limited to your AC buzz box, running it with AC may be your only option.

As a personal recommendation, maintaining the amperage at a lower setting while varying the arc length during your passes can be advantageous. Each rod behaves differently, particularly hard facing rods, so experimentation is key. It’s common to encounter hardfaced buckets in quarries, typically not with ‘pretty’ beads, since the priority is more on functionality than aesthetics. In refurbishing a bucket, we usually strip the bottom with 4-inch strips of preheat treated material, which has proven robust under regular usage. However, should you need to tackle abrasive materials, Cronatron’s hard faced mild steel plates are an excellent choice. I’ve personally observed effective applications of these materials in various high-stress scenarios, and can confidently recommend them.

If you're facing the inner part of the bucket, you might find yourself with limited options. It's also worth considering whether the base metal was preheated before welding—this aspect is often overlooked in the documentation I reviewed. Although I doubt it's the core issue, preheating may enhance the welding outcome. I hope these insights prove helpful. Please don't hesitate to share your progress with us, and good luck!

• Stoody Literature

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