Induction Bending Function
The induction bending function realizes efficient and precise bending processing of metal tubes through medium frequency induction heating technology, which is widely used in many industrial fields.
Control mode:
The inductive bending function is usually controlled by PLC programming, which can accurately control parameters such as heating temperature, bending angle, bending speed, cooling flow rate, etc. to ensure the consistency and repeatability of the process.
Equipment Composition:
The core of the induction bending function is the induction heating system, including the medium frequency induction coil, power supply and so on. The design of the induction coil directly affects the heating uniformity and efficiency. In addition, the machine is equipped with a mechanical bending device, a cooling system and a control system for precise control of the heating temperature, bending angle and speed.
The induction bending function is mainly based on medium frequency induction heating technology.
Its working process includes the following steps.
- Induction Heating:
The machine uses an induction coil to generate an alternating electromagnetic field.
The pipe section passing through the coil is selectively heated to a temperature of approximately 850–1100°C (1562–2012°F), depending on the material.
The heated section becomes malleable while the rest of the pipe remains cool and rigid.
- Controlled Bending:
The pipe is slowly pushed forward into a fixed radius former while being heated.
As it moves, the heated section bends without wall thinning, ovality, or wrinkles because the cold sections provide support.
The bending arm or clamping system ensures accuracy in bending angles and radii.
- Cooling Process:
Immediately after bending, the pipe is quenched (rapidly cooled) using water or air.
This cooling locks the shape and improves the mechanical properties of the bend.
- Final Inspection and Post-Processing:
The bent pipe is checked for dimensional accuracy, ovality, and defects.
Heat treatment or additional machining may be applied to enhance material properties.
Advantages of Induction Bending:
Minimal deformation – Maintains pipe wall thickness and shape.
Large diameter capability – Suitable for large-diameter, thick-walled pipes.
Energy-efficient – Uses localized heating instead of heating the entire pipe.
High precision – Produces smooth bends with controlled angles.
Common Applications:
Oil & gas pipelines.
Power plants.
Structural engineering.
Aerospace & automotive industries.
Shipbuilding.
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