Why Do Sheet Metal Bends Fail?
Are your sheet metal parts coming back from the fabricator cracked, distorted, or out of tolerance? Before you blame the press brake operator, check your design files! Our latest engineering guide breaks down the most common design-side errors that ruin a perfect bend and exactly how to solve them.
Main Reasons:
✅ Incorrect Bend Radius: Forcing the metal beyond its minimum limits causes immediate cracking.
✅ Wrong Grain Direction: Bending parallel to the grain increases stress, especially on high-strength alloys.
✅ Missing Bend Relief: Without a proper relief notch, the material is forced to tear to relieve stress.
✅ K-Factor Errors: Relying on software defaults leads to inaccurate flat patterns and misaligned assemblies.
✅ Feature Proximity: Holes and slots placed too close to a bend line will distort during the forming process.
