Minimum Hole Diameter in Perforated Metal: Sheet Thickness & Equipment Precision
Source:www.cn-psp.cnAuthor:河北森驰公司 Last updated:2025-05-06 09:12:06 Browse:
The minimum hole diameter of perforated metal is closely related to the sheet thickness and the precision of the processing equipment. Generally, to ensure material strength and extend die life, the hole diameter should not be smaller than the thickness of the sheet. With the aid of CNC punching machines and precision stamping equipment, today’s market can achieve ultra-fine holes as small as approximately 0.4 mm, which are widely used in microfiltration, decorative panels, heat sinks, and acoustic sound-absorbing boards.
In actual production, the common correspondence between minimum hole diameter and sheet thickness is as follows:
For sheet thickness up to 1.0 mm, the minimum hole diameter is typically 1.0 mm;
For sheet thickness up to 2.0 mm, the minimum hole diameter is typically 2.0 mm;
For sheet thickness up to 2.5 mm, the minimum hole diameter is typically 2.5 mm;
As sheet thickness increases, the hole diameter should be increased accordingly to ensure punching efficiency and prolong punch life.
To maintain high processing quality even at small hole diameters, the following strategies can be adopted during production:
Die Selection — Choose high‑hardness, high‑precision punches and dies, and perform regular fine adjustments and sharpening;
Process Optimization — Adjust punching speed and pressure, and apply lubrication appropriately to minimize material deformation;
Advanced Technologies — For extremely small hole diameters or complex hole shapes, consider non‑contact processing methods such as laser cutting or chemical etching.
During the design and material‑selection phase, factors such as light transmission, air permeability, aesthetics, and cost should all be taken into account. By balancing sheet thickness and hole diameter, you can ensure that perforated metal products meet functional requirements while also delivering economic benefits.
