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

Defects in stamping parts and preventive measures

January 23, 2024

Bending deformation of punched parts: The clearance force and reaction force do not generate torque on the same line. When the gap between the convex and concave molds is too large and the concave mold edge has a reverse taper, or when the contact area between the ejector and the workpiece is too ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 22, 2024

Reasons for burrs on stamping parts: 1. The punching gap is too large, too small, or uneven. 2. The cutting edge of the working part of the die becomes blunt. 3. Due to long-term vibration and impact, the centerline of the convex and concave molds changes, and the axis does not coincide, resulting ...
china latest news about Defects in stamping parts and preventive measures

Defects in stamping parts and preventive measures

January 19, 2024

Reasons for scrap: 1. Poor quality of raw materials. 2. Improper installation, adjustment, and use of stamping dies. 3. The operator did not correctly feed the strip along the positioning or did not ensure that the strip was fed with a certain gap. 4. Due to long-term use, the die may experience ...
china latest news about 14 geometric tolerances of parts: 6 shape tolerances and 8 position tolerances

14 geometric tolerances of parts: 6 shape tolerances and 8 position tolerances

January 18, 2024

Straightness: straightness refers to the condition that the actual shape of the straight line elements on the part maintains an ideal straight line. This is what is commonly referred to as straightness. Straightness is the maximum allowable variation of an actual line from an ideal straight line. ...
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