January 26, 2024
| Defects | Reasons | Measures |
| Cracks occur in the bending part of the bent part (the internal stress in the bending deformation zone exceeds the strength limit of the material). | 1. Eliminate burrs on the outside of the curved area, as burrs can cause stress concentration in that area. |
1. Reduce bending deformation. 2. Remove burrs from this area. 3. Place the side with burrs on the inside of the curved area. |
| 2.It is best to make the bending direction perpendicular to the fiber direction (rolling direction) of the material when bending the workpiece. | ||
| 3. The bending radius should not be too small, and the fillet radius should be increased as much as possible when the quality allows. | ||
| 4. The surface of the bent billet should be smooth and free of obvious protrusions and scars. | ||
| 5. During bending, an intermediate annealing process is used to eliminate internal stress, and the softened bending rarely produces cracks. | ||
| 6.When bending, it is necessary to apply lubricant to large bent parts to reduce friction during the bending process. |
