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china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

February 3, 2024

Defects Reasons Measures Surface scratches on deep drawn parts. Sharp pressure marks on the surface of the convex or concave molds, resulting in corresponding tensile marks on the surface of the workpiece. Simply grind or polish the damaged surface. The gap between the convex and concave molds is ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

February 2, 2024

Defects Reasons Measures Uneven and wrinkled edges of deep drawn parts. The center of the blank does not match the center of the convex and concave molds, or the material thickness is uneven, as well as the radius of the concave mold fillet and the gap between the convex and concave molds are uneven ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

February 1, 2024

Defects Reasons Measures The causes and prevention of wrinkling on the flange of deep drawn parts during the drawing process. The edge pressing force at the flange is too small to resist excessive tangential compressive stress and cause tangential deformation, resulting in the formation of wrinkles ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 31, 2024

Measures for significant thinning of the bent parts after bending: 1. The bending radius is too small relative to the plate thickness value (r/t>3 for right angle bending). Generally, increasing the bending radius is used. 2. Multi angle bending causes the bending area to become thinner and larger. ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 30, 2024

Defects Reasons Measures The position of the blank hole changes during bending. The position and size of the hole are incorrect (thinning due to bending and tension). Strictly control the bending radius, bending angle, and material thickness. Trim the neutral layer of the material and ensure that ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 29, 2024

Reasons for surface scratches on curved parts: 1.When continuously bending soft materials such as copper and aluminum alloys, metal particles or slag are prone to adhere to the surface of the working area, causing significant scratches on the workpiece. In this case, the shape of the working area, ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 27, 2024

The reasons for the deviation of bent parts during the bending process: During the bending process, when the billet slides along the surface of the concave die, it will experience frictional resistance. If the frictional resistance on both sides of the billet differs significantly, the billet will ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

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 ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 25, 2024

Defects Reasons Measures Unqualified size and shape when bending parts. Material rebound. 1. Select stamping materials with high elastic modulus and low yield point, which have relatively stable mechanical properties. 2. Add calibration procedures and use calibration bending instead of free bending. ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 24, 2024

When punching, the outer edge and inner hole precision of the punched parts are reduced and the reason for the change in size is: 1. The positions of positioning pins, stopper pins, etc. have changed or are too worn. 2. The operator's negligence caused the material to shift left and right when ...
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