Sticky dust cloth/dust removal cloth is a new type of wiping material, manufactured through a special process. It is soaked in resin, sticky, and thinly woven cloth, and has multiple functions such as soft texture, strong adsorption, high cleaning rate, and no fiber loss. Do you know what effect it has on the punching section of sticky dust cloth? If you don't know, let's follow the dust cloth manufacturer Wuxi Hengtai Adhesive to learn more!



When the gap is reasonable, during the plastic deformation stage, shear cracks are formed along the large direction of the convex and concave die edges, and their large directions are relatively the same. In the stage of fracture separation, the upper and lower shear cracks can meet, intersect, and overlap with less spacing. At this point, the cross-sectional area of the punched part, although with a corresponding inclination, is relatively vertical and smooth, with smaller arc bands and burrs.



2. When the gap is too large, the direction of the upper and lower shear cracks formed at the convex and concave die edges is different, and the direction of the shear cracks at the convex die edge is within the direction of the shear cracks at the concave die edge. The bending and stretching of the steel plate become larger, and the steel plate is torn, reducing the bright band of the workpiece, and both the arc and fracture band become larger. As the gap increases, the inclination of the workpiece cross-section also increases, and the burrs increase and cannot be removed.

3. When the gap is too small, the direction of the upper and lower shear cracks formed at the convex and concave die edges is different. It is necessary to use a dust roller to remove dust before achieving the same effect. The shear cracks formed at the convex die edges are located at the edge of the shear cracks in the larger direction of the concave die edges. When the punch is pressed down again, a part in the middle of the upper and lower cracks will form re cutting and extrusion forming. As a result, a bright band appeared again on the cross section of the punched part, with bright bands on both sides. There was a tearing surface in the middle of the cross section of the workpiece, and extremely long burrs appeared in the inner hole. Although there is a certain improvement in burrs, the workpiece has a small dome bend and a vertical cross-section. If the tear in the middle of the workpiece is not very deep, it can still be applied.