Process of manufacturing perforated metal

The perforation of a perforated metal can be done with the various types of presses like CNC, sectional, turret,all-across etc., every press applies pressure with repetitive blows with punches that can produce various holes: rounds, squares, slots, and decorative patterns.

State-of-art technology followed by Heanjia Super-Metals enables for regular perforations with high precision. All-across or full width perforating presses are the rapid and the most efficient method for creating regular perforations in the large magnitude. These presses can perform at the different speeds from 100 to 800 strokes per minute, punching from several hundreds to thousands of holes per minute with high precision and very tight tolerances. These pressing machines can also be computer controlled to provide solid margins on the both sides of the metal sheet.

Turret and sectional presses, however these run at lower speeds, provide other benefits as these allow flexibility in perforating heavier gauge metals, short runs and special design perforated shapes, whole with an economical tooling.

The highly familiar perforation design is round hole, although square, rectangular, slot and special patterns like clovers, triangles, hexagons and combination of these patterns provide multiple decorative patterns in the perforated metal.

Distribution of perforations may vary as per the needs of the customer. Unlimited combinations of the perforation designs, distribution of the perforated area and the distance between perforations can be made. Although there are several commercial standard patterns that provide the benefit of being readily available at an affordable cost. The common distribution patterns are staggered(at angle 60o and 45o), diagonal and rectangular etc.

The Perforation metal spacing provides one more factor that should also be counted. The space left among the perforations is called bar. The open area provided by the perforated metal is due to the combination of the perforation design, dimensions of the perforation (diameter,in the case of slots and squares, length and width) and the perforation distribution. The pattern direction is also another considerable factor while designing the perforated metal, the factor that is significantly vital while dealing with slots or rectangular perforation designs. Although the straight row of holes is generally parallel to the long dimension of the sheet, that may not always be the case or meet the designer needs. An ultimate element for consideration is perforation sheet that should have side and end margins.

Round Holes Perforation Sheet