What might indicate improper adjustment of a torch?

The presence of a hissing sound from the flame is a clear indicator of improper adjustment of a torch. In oxyfuel cutting, a well-adjusted torch should produce a flame that is both steady and quiet, typically characterized by a smooth, stable burn without any excessive noise. The hissing sound can suggest that there is an imbalance in the oxygen and fuel gas ratios; this imbalance could lead to an inefficient combustion process, which ultimately impacts the cutting quality and can potentially present safety hazards.

Other factors that you might expect from a properly adjusted torch include a clean burn which generates minimal soot and a bright blue flame, indicating that there is sufficient oxygen for complete combustion. Therefore, the presence of a hissing sound stands out as a distinct sign of misadjustment or malfunction in the torch settings.