Slim Narrow Metal Stamping Part with Tight Bends

Slim Narrow Metal Stamping Part with Tight Bends

This custom stamping part is designed with a slim and narrow profile. Its structure features two bend flanges positioned closely together, with one flange containing multiple bends.

To achieve stable accuracy, some bends are produced directly during stamping, while others require press-brake forming with a gooseneck die to accommodate the limited flange spacing.

Part specification

• Dimensions: 290 × 32 × 56 mm

• Material: Electro galvanized steel, 1.5mm thickness

• Surface Treatment: None

Critical feature

Dimensional Tolerances

For this type of elongated stamping part, bending precision is critical. Small deviations at the bend lines tend to magnify along the full length, making tight control essential.

• Hole tolerance: ±0.02 mm

• Blanked features tolerance: ±0.05 mm

• Bending tolerance: ±0.20–±0.50 mm

The component’s long and narrow form increases the sensitivity to angular and linear deviations, which places higher demands on process control.

Managing Tight Bend Spacing

The distance between the two bend flanges is relatively small compared with their height. To form these features cleanly, a gooseneck die is required on the press brake.

Some bends are integrated into the stamping operation, while others must be formed separately because not all bending steps can be completed on a press brake alone.

This combination of methods ensures accuracy while preventing die interference in areas with tight bends.

Material: Electro-Galvanized Steel

The part is produced from electro-galvanized sheet steel, also referred to as zinc-coated sheet or zintec steel. This material provides good corrosion resistance and consistent forming characteristics, making it suitable for precision stamped metal parts.

Surface Polishing to Conceal Scratches

One side of the part undergoes polishing, creating random, textured patterns on the surface. The polishing process not only removes minor burrs but also helps hide small scratches, improving the overall appearance.

Blanking by Stamping

The blank is produced through stamping rather than laser cutting. This approach offers:

• Higher dimensional accuracy for mass production

• Straighter, more precise edges that improve bending accuracy

• Reliable hole-to-hole consistency where spacing is as small as 1.5 mm (equal to the material thickness)

• Clean forming of countersunk holes used for flush-mount screws

  

Using custom metal stampings for the blank ensures tighter overall tolerance control and provides a more stable reference for subsequent bending.

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If You Require Custom Fabrication

We have extensive experience in metal stamping, precision bending, and the production of complex custom stamping parts.
Please contact us if you need technical support or fabrication services