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Perforated plates - perforation

Definition of perforation

The term "perforated metal plate" (commonly referred to as perforated plate or punched plate) is defined in DIN 24041 and DIN 4184/Part 2. According to the above-mentioned DIN standard, a perforated metal plate refers to sheet metal (plate, panel etc.) with identical openings (holes) at regular spacing that are produced during a stamping process.
Deviating from these standards, plates with irregular perforation and configuration are also produced.

The best known perforation types are categorised according to their geometrical features, from round to elliptical. However, there are numerous special shapes. They are shown in categoryOrnamental perforation or Deco + Design and are used in a multitude of applications.

Stamp-in/stamp-out side

Lochung - Einstanzseite und Ausstanzseite

The perforation process distinguishes between the stamp’s entry side (stamp-in side) and the stamp-out side.

At the entry side, a slight inward radius is created. On the stamp-out side, a punch burr is created. The stamp-in side is usually referred to as the “good” side, while a burr is created on the opposite side.

Open cross-section A0

This term refers to the relative open perforated area (air flow), expressed in %. This depends on the type of perforation, the hole diameter and the ratio of the diameter to the pitch. A larger diameter does not necessarily increase the A0 cross-section. In practical terms, this does not only define the air flow in technical applications but also determines the transparency in ornamental applications..

Example of an off-set round perforation:

Ø mm

Pitch mm

A0 in %

4

6

40

10

15

40

10

20

 

Depending on the application, different open cross-sections are required. By selecting the applicable perforation, almost any design can be accomplished.

Cost of perforated plates

 

 Audi facades

Audi facades

Berlin

Berlin

Provex

Provex

Piz Boè Alpine Lounge

Piz Boè Alpine Lounge

Jönköpin Sweden

Jönköpin Sweden

Missoni Delhi

Missoni Delhi

Museum of islamic art  Doha

Museum of islamic art Doha

BMW Museum

BMW Museum

Seniorresidenz Mannheim

Seniorresidenz Mannheim

King Abdullah Financial District

King Abdullah Financial District

winegrowers' cooperative

winegrowers' cooperative

Beispiel

Beispiel