The application of fused tungsten carbides (FTCs) in nickel-based alloys is important for improving the wear resistance of tooling equipment in the mining industry. However, FTCs are thermally unstable and will dilute under excessive energy input during welding. The parameters affecting dilution in this context are diverse and not yet completely understood. To date, the existing scientific literature focuses on the impact of the melt bead characteristics to explain the degradation during gas metal arc welding (GMAW). The degradation-promoting influence of the droplet transfer mode has not yet been considered. A methodology was developed to experimentally quantify the dependence of the degradation kinetics of FTCs on the droplet transfer mode. The established experimental model demonstrated that the globular transfer mode leads to increased degradation of FTCs in comparison to that of the short-arc mode, which can be attributed to the higher process power and hence higher droplet temperature. In this context, the quantifiable impact of the droplet transfer mode was determined.

电熔碳化钨 (FTC) 在镍基合金中的应用对于提高采矿业工装设备的耐磨性具有重要意义。然而，FTC 是热不稳定的，并且会在焊接过程中输入过多的能量时被稀释。在这种情况下影响稀释的参数是多种多样的，尚未完全了解。迄今为止，现有的科学文献侧重于熔珠特性的影响，以解释气体保护金属电弧焊 (GMAW) 期间的退化。尚未考虑液滴转移模式的降解促进影响。开发了一种方法来通过实验量化 FTC 降解动力学对液滴转移模式的依赖性。建立的实验模型表明，与短弧模式相比，球状转移模式导致 FTC 的降解增加，这可归因于更高的工艺功率和更高的液滴温度。在这种情况下，确定了液滴转移模式的可量化影响。