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Metal stamping - which parts are the main sections of blanking parts

Release Time：

2022-11-18 11:49

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The section of blanking parts can be divided into four distinct parts: Collapse corner, smooth surface (bright zone), rough surface (fracture zone) and burr

1.Collapse corner - collapse corner, also known as quadrangle band, is the result of the material near the cutting edge being implicated and drawn into deformation (bending and drawing) during blanking. The better the plasticity of the material, the greater the distance between punch and die, and the greater the collapse corner.

2.Smooth surface (bright band), also known as shear surface, is a bright vertical section formed by fine pressing of convex and female die sides and materials when plastic deformation occurs after cutting edge cuts into sheet metal. Smooth surface is the most ideal blanking section. The dimensional accuracy of blanking parts is measured by the size of the smooth surface. In ordinary blanking, the width of the smooth surface accounts for 1/3~12 of the thickness of the sheet metal. The better the shape of the material, the wider the smooth surface

3.Rough surface (fault band) is a tear surface formed by the through surface of the main crack, with a very rough surface and a certain slope. Materials with poor plasticity have serious tendency to tear, and the proportion of rough surface is large

4.Burr Blanking burrs are formed when microcracks appear in the material on the side near the cutting edge. When the punch continues to descend, the formed burrs are elongated and remain on the blanking parts. The smaller the blanking gap, the smaller the height of the burr


Cutting all kinds of copper, aluminum, iron, stainless steel and other precision parts by metal stamping discipline. Hexagonal copper column, middle column, connecting column, isolation column, all kinds of axles, iron axles and axles; copper nut; mobile phone nut; hardware rotating shaft; press riveting nut; lock element; worm; flashlight; pen accessories and other metal stamping parts

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