Carbon Steel ASME SA106 GR.B High Frequency Welding Fin Tube Manufacturer
What is High Frequency Welded Fin Tube?
High frequency welded fin tube is a type of fin tube, which is
mainly welded by high frequency welding and is a new type of
excellent heat dissipation element. The high frequency welding
finned tube is welded with high frequency current, the welding
method is reliable and excellent, the welding seam is small, and
the surface of the radiator is more solid as well as beautiful.
High frequency welded finned tube is a heat sink element often used
in finned tube radiators. Welding high-frequency welded finned tube
on the base tube of the radiator improves the heat transfer
coefficient of the heat exchanger side of the radiator and enhances
the heat dissipation effect of the radiator, and the excellent heat
dissipation effect makes the finned tube more and more popular.
High frequency finned tubes features
(1) High production efficiency, continuous winding production;
(2) Low cost, it depends on the characteristics of high-frequency
welding itself — skin effect heating workpiece surface, to achieve
the purpose of welding, welding process does not need to add any
filler metal materials;
(3) Since the high-frequency current only passes on the shallow
surface of the steel tube, the welding heat affected zone is small,
so the additional wall thickness caused by this need not be
considered in the design calculation; No heat treatment is required
after the workpiece is welded.
(4) Solid welding, in the equipment configuration reasonable,
process parameters perfect under the circumstances, can achieve
between the fin and steel pipe welding firm, can withstand frequent
open, shutdown caused by the thermal shock wave.
(5)The heat exchange area is large
(6)Reduces the installation space of the required heat transfer
surface
(7)The stiffness and seismic performance of steel pipe are improved
High frequency fin tube specifications
Product specification: ∮ 25-219mm
Fin thickness: 0.8-2.5mm
Fin pitch: 4-35mm
Fin width: 10-25mm
Effective welding length: ≤15 m
Bending radius of finned tube: 50-300mm
Finned tube welding rate: more than 95%
Chemical Composition Of GR.B:
| Grade B |
|---|
| Carbon max. % | 0.30 |
|---|
| Manganese % | 0.29 to 1.06 |
|---|
| Phosphorous, max. % | 0.035 |
|---|
| Sulfur, max. % | 0.035 |
|---|
| Silicon, min.% | 0.10 |
|---|
| Chrome, max. % | 0.40 |
|---|
| Copper, max. % | 0.40 |
|---|
| Molybdenum, max. % | 0.15 |
|---|
| Nickel, max. % | 0.40 |
|---|
| Vanadium, min.% | 0.08 |
|---|
HFW fin tube principle:
The basic principle of this kind of fin tube is to take the
seamless steel tube on the outer packing band with a certain
distance (strip perpendicular to the outer surface of the tube) and
high-frequency current welding as the heat source.
By using the skin effect and electrical effect of high-frequency
current, the local heating tube, the steel strip and the contact
surface area to be welded can be plastically welded.
At the same time, the forging force of finned tube is applied to
the metal oxide and the plastic form of the contact outside of the
excess melt, so as to realize the combination of solid atoms
between the steel tube and the finned material.
Equivalent Material:
| Former | New |
|---|
| Standard | Material | Standard | Material |
|---|
| ASTM A106 | GRADE B | EN 10216-2 | P265GH |
Applications
-Power Plants
-Chemical Industry
-Heat Recovery Plants
-Heat Industry
-Steam Boiler
-Oil Refining
