First, concave parts at the bottom of the uneven.
Possible reasons: the sheet is not smooth; concave mold is not installed inside the top material device; the contact area of the plate and roof is too little or insufficient. Solution: leveling the plate; install the charging device and adjust the charging strength; add integer process.
2. The width direction of the Sheet Metal Bending plate is changed, showing an arc or a bow angle.
The possible reasons are as follows: the width direction of the plate is different in the stretching process and the size of the shrinkage, and the change of radian and rotation angle occurs. Solution: increase the pressure of bending equipment on the plate; add correction process; notice in advance that the grain of the plate is consistent with the direction of bending.
Three. Cracking occurs at the bending part.
Possible causes: plate grain direction and bending direction do not intersect; the bending radius is small; burr side facing outward; the plasticity that chooses plank is too bad. Solution: adjust the arrangement of cutting material; increase the bending radius of the die; change the burr position on the plate inside the rounded corner; use plastic material or use an annealing process.
Four, bending leads to deformation of the hole.
Solution: enhance the pressure of the top plate; use type bending; plaid is added to the surface of the plate to increase the friction of the plate surface to prevent the displacement of the plate in the bending process.