About Perforated Metal

What is Perforated Metal?

Perforated metal is a metal sheet that is punched with holes in a uniform pattern.
It is used in many fields.

Where is it used?

■Covers

Machinery covers, ornamental covers, speaker grills, storage, radiator grills, stove grills, protecting covers
Click HERE to see examples.

 

■Automotive Use

Air filters, oil filters, mufflers, front grills, interior and exterior parts
Click HERE to see examples.

 

■ Noise and Heat Insulation

Heat insulation panels, noise insulation panels for construction sites, vehicles and vessels
Click HERE to see examples.

 

■Architectural Applications

Wall paneling, partitioning, ornamentals, lighting equipment, exterior panels, fixtures, chairs, tables, ceilings
Click HERE to see examples.

 

■Strainers

For production of sugar, pulp and paper,flour, oil refining, distillation columns
Click HERE to see examples.

 

■Residential Applications

Boilers, ventilators, kitchen furniture, planters, shields for microwave ovens, dust boxes
Click HERE to see examples.

 

■Seives

For screening grains, seeds, coal, sands, gravels and chemical products
Click HERE to see examples.

 

■Granulation and Milling

For production of granular and tablet pharmaceuticals, cube sugar, instant coffee, agricultural chemicals, fertilizers, chemical products

 
For granulators ■ For granulators
Used for granulating solid materials to specific size and shape desired in particular applications.

■ Applications
Production of granular and tablet pharmaceuticals, cube sugar, instant coffee, agricultural chemicals, fertilizers, chemical products, etc.

 

For Mills ■ For Mills
Used in machines for physically crushing and milling solid materials.

■ Applications
Manufacture of drugs, agricultural chemicals, fertilizers, industrial chemicals, etc.

Perforated metals for granulators and mills are produced from materials and with plate thicknesses and hole sized suitable to particular applications.

 

■Centrifugal Separators

For food, chemicals, pharmaceuticals, pulp and paper, mining and ceramic industries

 
Centrifugal Separation ■ For Centrifugal Separators
Used for separating crystals from a filtrate in chemical industry.

■ Applications
Production process in food, chemicals, paper making, pharmaceuticals, mining, and ceramic industries as well as sewage treatment, waste treatment and industrial waste water treatment.

Sectorial or conical shapes can be formed upon request.

遠心分離機用パンチングメタル Please contact for more information.
 

Please make full use of our fabrication services.

What is it made of?

.Rolled Steel for General Structure(SS)
.Cold-Rolled Steel (SPCC-SD)
.Hot-Rolled Steel (SPHC-P)
.Galvanized Steel(SGCC)(SGHC)
.High-Tensile Steel
.Stainless Steel(SUS)
.Aluminum(ALP)

● Galvanized Steel
.Electro-Galvanized Steel(SECC)(SEHC)
.Hot-Dip Zinc-Coated Steel(SGCC)(SGHC)

.Surface-Treated Steel
.Colored Steel
.Brass(BSP)
.Copper(CUP)
.Titanium(Tip)
.Polyvinyl Chloride
.Rubber

●Aluminium-Coated Steel(Alstar)

 

Feed Direction

*In the case of sieves, please specify direction the of flow of object to be sifted, because the through-put might be increased depending on the feed direction.

■Round hole

<Example>
D=10 P=15 60 deg. staggered

 

■Round end slot

Please specify the orientation of slots in relation to the width and length of perforated metal sheet.

 

 

Punching process

(1) Die layout

  ■Standard   ■Step-and-a-half   ■Two-steps-and-a-half

Feed direction
   
       
  Standard layout: The pattern at the beginning and end of the sheet is complete, providing the finished ends. Optional layouts: When it is difficult to use the standard layout due to a hole size in relation to a plate thickness and/or a pitch required, such optional layout as a step-and-a-half and two-steps-and-a-half layouts is used. In such case, the pattern of holes at the beginning and end of the sheet is incomplete, as shown above, providing unfinished ends.

 

(2) Staggered holes

■Standard layout
■Step-and-a-half layout

As shown above, a perforating die layout for a staggered formation includes an even number of rows of punches in a die. The patterns at the beginning and end of the sheet are asymmetric.

 

Perforated areas (zone perforation)

For zone perforation, please specify A or B below.

A: Distance between the top end of the first hole and the bottom end of the last hole
B: Distance between centers of the first and last holes

Perforation processing is available only in specified zones as illustrated above.  (The finished metal sheet may be slightly strained.)

 

Slant and circular processing

■ Four-row die layout

■ Two-row die layout

Steps of die width are caused in slant and circular processing as illustrated above.  (Steps are less noticeable in the case of single-row die layout.)

 

Margins

■ With side and end margins

■ Without margins

A: Distance between the end of the sheet and end of the nearest hole
B: Distance between the end of the sheet and center of the nearest hole
Please note there are two kinds of dimensions.

 

Flatness (leveling)

All products have an excellent flatness, because they are subjected to corrective roll leveling after perforating process. Due to reaction of the forces accumulated in the perforated metal sheets during processing, the sheets may be slightly strained.

This should be noted especially in the following cases:

 

A Margins are wide.
B A blank area is present between perforated areas.
C The pitch is low. (The percentage of open area is high.)
D The sheet to be processed is relatively thick.
E The sheet to be processed is very long.
F Stainless steel or a special material is to be processed.
G A margin must be left in a disk-shaped plate.

 

 

Cuttig

●In the case of cutting from standard size, the final product should have either:

(1) no margin on any sides; or
(2) a margin on some sides.

Please let us know if (1) is specifically required.  Cutting to a specified size is also available.

(1) No margin on any sides

(2) Margin on some sides

Shown above are only examples of various cutting patterns available.

 

SUPERPUNCHING TM

Super-PunchingClick to enlarge.* Not shown in full scale.

Click to enlarge. Click to enlarge. Click to enlarge.
SUS304MK
(Open Area 23%)
t1×D0.75×P1.5 60deg. Staggered
SUS304L
t1.5×D1.2×P2.4 60deg. Staggered
SUS304L
(Open Area 22.6%)
t2×D1.5×P3 60deg. Staggered
Click to enlarge. Click to enlarge. Click to enlarge.
SUS304L
(Open Area 40.3%)
t3×D2×P3 60deg. Staggered
SUS304L
t3×D3×P4 60deg. Staggered
SUS304L
(Open Area 32.6%)
t4×D3×P5 60deg. Staggered
Click to enlarge. Click to enlarge. Click to enlarge.
SUS304L
(Open Area 32.6%)
t5×D3×P5 60deg. Staggered
A5052P
(Open Area 30.2%)
t6×D3.1×P5 Straight
SUS304L
t6×D5×P8 60deg. Staggered
Click to enlarge. Click to enlarge. Click to enlarge.
A5052P
(Open Area 18.7%)
t7×D5×P11 60deg. Staggered
SUS304
(Open Area 40.3%)
t9×D10×P15 60deg. Staggered
SS400 Galvanized
t12×D12×P23.5 Straight
Click to enlarge.    
SS400
(Open Area 15.7%)
t16.0×D10×P24 60deg. Staggered
   

 

Aluminum and Anodized Aluminum

Click to enlarge.* Not shown in full scale.

Click to enlarge. Click to enlarge. Click to enlarge.
Bronze
Delustered(BN)
2.0T×D8×P12 60deg. Staggered
Black
Delustered(KN)
2.0T×D8×P12 60deg. Staggered
Bronze
Luster(BC)
2.0T×D8×P12 60deg. Staggered
Click to enlarge. Click to enlarge. Click to enlarge.
Silver
Delustered(CN)
2.0T×D8×P12 60deg. Staggered
Silver
Luster(B1ED)
2.0T×D8×P12 60deg. Staggered
Stained(Pale).
Delustered(SN)
2.0T×D6×P9 60deg. Staggered

 

Other Products

Click to enlarge.* Not shown in full scale.

Click to enlarge. Click to enlarge. Click to enlarge.
SUS304
t1.5×Regular Hexagon12×
P13 60deg. Staggered
t2×D7/H1.3×P10  
Click to enlarge. Click to enlarge.  

 

Formed products can be supplied as well.

Click to enlarge.* Not shown in full scale.

Click to enlarge.    

 

Comparison of Cutting Methods

Compare finished perimeters.

Click to enlarge.* Not shown in full scale.

Click to enlarge. Click to enlarge.
Laser Beam Cutting
SUS304 0.5t-12t
* Please ask for other thicknesses.
Nibbling
SUS304 0.5t-3t
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