Corrugated Fin Walls

The CRCA coil is decoiled from the hydraulically controlled expandable decoiler and after a simultaneous coil cleaning process, fed forward in to a CNC controlled automatic fin folding machine. The corrugated fin walls are produced simultaneously and are sheared off by the combined cutting and edge bending units.

The fin walls and then fed in to the CNC controlled auto-robotic welding for the fin edges. After the seam welding on the edges, rectangular strips are spot welded underneath the fin walls to provide greater stability and strength to the panel. The corrugated fin walls with embossed channels, which provide greater stability to the corrugated fins, are then spot welded before the final bending station for 90 degrees downward bending for the two edges of the wall.


Corrugated Fin Walls Corrugated Fin Walls Corrugated Fin Walls Corrugated Fin Walls
Corrugated Fin Walls      


Technical Data

Description

Minimum

Maximum

Fin Fold Length (L)

300 mm

1300 mm

Fin Height(H)

50 mm

400 mm

Pitch(P)

45 mm

80 mm

Sheet Thickness (T)

1 mm

1.5 mm

Inner Gap(IG)

6 mm

Edge Front(EF)

 ≥ 40 mm

Edge Rear(ER)

 ≥ 40 mm

Edge Bending - 90 degree upwards

15 mm

300 mm

Edge Bending - 90 degree downwards

15 mm

80 mm

Spot Welding on the Rectangular Strips

To provide more stability to the wall panels

Embossing

One / Two depending up o the height of the fin

Spot welding on Embossing

One / Two depending up o the height of the fin


Types of Corrugated Walls

Corrugated Walls without Embossing

Corrugated Walls with One Embossing

Corrugated Walls with Two Embossing



Positions of Embossing



Material Thickness: Corrugated Walls with Embossing



Material Thickness: Corrugated Walls without Embossing

 

Benefits Corrugated
Type Transformer Tanks

Improved heat dissipation by using embossments
Reduced weight of transformer tanks
Reduce costs when compared to other designs
Compact in size
Saving of Oil
Oil cleaning is easier and economical
No blockage of oil flow into the fins