| Technical
Details |
| FIN
Details |
|
|
| Fins Thickness |
: |
Min. 0.8 MM to Max. 3 MM |
| Fins Height |
: |
Min 0.5” (12.7 MM) To Max. 1” (25.4
MM) (depending On the Basic Tube Outer Diameter
on which Fining is to be done)
|
| Fin Density |
: |
Min 80 Fins Per Meter to Max. 300 Fins per Meter
|
| Material |
: |
Carbon Steel, Stainless Steel, Alloy Steel and
Incolloy. |
| |
|
|
| TUBE
Details
|
|
|
| Tube Diameter |
: |
Min. 32 MM to Max. 168.3 MM OD |
| Tube Thickness |
: |
Minimum 2 MM |
| Tube Mateial |
: |
Carbon Steel, Stainless Steel, Alloy Steel &
Incolloy |
| |
|
|
| Production
Capacity |
| • High frequency welding of
2,40,000 mtrs. Of Spiral Wound High Fin Tubes
(Solid & Serrated) per annum. |
| |
| Production
Technique & Applications |
HF resistance
welding usually employs 450,000 Hz current.
With this technique, the fin is wound on edge
around the tube and a continuous weld is obtained.
The forming of the fin around the tube and the
heat of welding causes some upsetting or widening
of the base of the fin which results in a contact
area wider than the fin itself. Heat is thus
transferred across the whole interface and not
just through the weld itself. However, the interface
area is much smaller and quality of the HF weld
is more,this is important in maintaining negligible
resistance to heat transfer between the fin
and tube. HF welded fins shows less extensive
heat affected zone, the affected depth is minimal
when compared to other types of welding.
The use of high frequency current
results in very localized heating of the tube
surface and the edge of the fin due to “skin
effect”, this results in higher weld speeds
and greater ease in welding difficult material
combinations. The HF process also allows much
thicker fins to be welded. In fact, it is now
possible to weld fins heavy enough to replace
those previously available only with MIG, TIG
and stud welding processes, which do not give
equivalent quality or cost effectiveness.
|
-
Helical
Solid Finned Tube
The important features of this configuration
are efficient, effective bond of fin to
tube under all conditions of temperature
and pressure, and ability to withstand high
fin side temperatures. This solid fin configuration
is the most rugged and will stand up to
repeated cleanings if fin fouling if that
is a problem in the application.
-
Helical
Serrated Finned Tube
The important features of this configuration
too is efficient, effective bond of fin
to tube under all conditions of temperature
and pressure, and ability to withstand high
fin side temperatures. This Serrated fin
configuration is even better to withstand
the fin fouling is a problem in the application.
|
This Production
is done on the most modern sold state welding
mill, first of its kind installed in India.
The machine is equipped with latest state of
art equipment with controls for maintaining
a constant predefined weld current output, this
takes automatic care of minor variations over
the full length of the product, hence giving
consistent weld quality. It has a CNC controlled
driving systems for consistency in pitch. |
