The edges of an oxyfuel gas cut are generally very rough.

The edges of an oxyfuel gas cut are generally very rough.

• A. True
• B. False
• C. They are generally smooth
• D. Edge roughness varies with operator

Answer: (B)

In oxyfuel cutting, edge quality comes from controlling heat input and how quickly you remove the molten metal. When preheating is proper and you move the flame at a steady, correct speed with appropriate oxygen pressure, the cut edge tends to be quite clean and relatively smooth. Rough edges show up mainly when technique or setup is off—too slow or too fast travel, improper preheat, or wrong gas pressures can cause the kerf to widen, gouge, or trap slag. Dross may form on the bottom side, but the edge itself isn’t inherently very rough under good conditions. So the statement isn’t generally true; edge roughness is more about technique and settings than a fixed outcome of oxyfuel cutting.

In oxyfuel cutting, edge quality comes from controlling heat input and how quickly you remove the molten metal. When preheating is proper and you move the flame at a steady, correct speed with appropriate oxygen pressure, the cut edge tends to be quite clean and relatively smooth. Rough edges show up mainly when technique or setup is off—too slow or too fast travel, improper preheat, or wrong gas pressures can cause the kerf to widen, gouge, or trap slag. Dross may form on the bottom side, but the edge itself isn’t inherently very rough under good conditions. So the statement isn’t generally true; edge roughness is more about technique and settings than a fixed outcome of oxyfuel cutting.