Induction Pipe Bending Machine, Pipe Bending Machines, Pipe Bending Machinery, Welding Positioners, Anand, Gujarat, India

Induction Pipe Bending Machine, Pipe Bending Machines, Pipe Bending Machinery, Welding Positioners, Anand, Gujarat, India

Induction pipe Bending Machine

Induction Pipe Bending Machine

Pipe bending is a process wherein the pipe to be bend is heated to a specified temperature by high frequency induction heating coil and bending is done in hot condition. The pipe is clamped at the forward end by the radius arm clamp. The tail end of the pipe is locked in the pushing carriage clamp. The pushing carriage moves on the main track as it is fitted with a chain, which is driven by a DC Motor at a fixed constant speed through a gearbox.

When current is supplied through high frequency current transformer to the coil, heating of pipe starts. The heating temperature is strictly controlled depending upon the material of the pipe and its wall thickness. When the specified temperature is attained, the DC Motor is started at a preset speed which drives the pushing carriage in the forward direction. As a result the pipe begins to advance being bent simultaneously.

Immediately after the bending process, quenching will follow. The Radius Arm is designed so that the pipe will be bent by the same distance as the one between the center of a pair of rollers and the axis point of the arm. The arm rotates in natural mode around the pivotal point. The heated portion begins to transform its elasticity due to the difference of strength between the heated and unheated portion of the pipe.

BRIEF DESCRIPTION OF PIPE BENDING MACHINE :-

Pipe Bending Machine consists of the following :

  1. Hydraulic system.
  2. Induction heating unit.
  3. DC drive system for constant movement of pipe during bending.
  4. Water cooling system for quenching.
  5. Optical pyrometer for temperature monitoring.
  6. Air cooling system.
  7. The mechanical system.

1. HYDRAULIC SYSTEM :-

The hydraulic system consists of a power pack and is designed for 10,000 Psi working pressure.

It consists of total of twelve cylinders and are used as follows:
Two cylinders for clamping the pipe on pushing carriage.
Two cylinders for clamping the pipe on forward carriage.
Four cylinders for fixing the pivot base in pivot track.
Four cylinders for fixing the forward carriage on radius arm.
The hydraulic system is equipped with special type of return valve.

2. PIPE HEATING UNIT :-

The Pipe Bending Machine is equipped with 500 KW, 1 KHZ power supply; a matching transformer kept on a matching transformer stand which can be moved in three direction viz. forward/reverse; up/down and left/right direction and so the air, induction and water quench coils are concentric.

3. DC DRIVE SYSTEM :-

DC drive system consists of a DC motor and a gearbox. The DC motor is run with a DC drive. The DC motor is fitted with a taco generator to have a precise speed control. The pushing is controlled with a chain mechanism, DC motor & gear assembly in forward and reverse direction.

4. WATER COOLING SYSTEM FOR QUENCHING :-

There are three water cooling circuits in the machine. De-mineralized water circulation is used for cooling the induction furnace. DM water is stored in a water tank, circulates in the induction furnace and returns back to the DM water tank. The DM water is maintained under specific temperature with the help of a heat exchanger. Quenching and simultaneously cooling of the pipe is done with the help of another raw water line. Raw water is sprinkled continuously on the pipe from the water coil adjoining the induction coil.

5. OPTICAL PYROMETER :-

It consists of a temperature sensor fitted in the vicinity of heating area and is focused on the heated zone. The digital monitor is fitted on the operators console for the constant monitoring of the temperature of the pipe recorder. Temperature recorder records temperature maintained during the bend manufacturing.

6. AIR COOLING SYSTEM :-

Air cooling system is used to divert the quenching water away from the induction coil and the heated zone to have uniform heating of the pipe.

7. MECHANICAL SYSTEM :-

The mechanical system consists of a Pushing Carriage, Forward Carriage, Radius Arm, Pivot Base, Pivot Track, Chain, Gear box etc.

PRODUCT RANGE :-

Max. Pipe Size                  :     48” (1219.00 mm OD)
Min. Pipe Size                   :     8”   (219.10 mm OD)
Max. Pipe Length              :    16 Mtr.
Max. Bend Radius             :     6400 mm
Min. Bend Radius              :    750 mm
Feed Speed                      :    0-250 mm/min.
Bend Angle                       :    0-180°   
Max. Arc Length                :    9500 mm

APPLICATION ARIA :-

  • Piping system in conventional and nuclear power stations
  • Turbine piping
  • Oil and gas pipelines and compressor stations
  • Chemical and petrochemical process engineering
  • Riser bends for off shore platforms
  • Building and bridge construction

LINE DIAGRAM OF INDUCTION PIPE BENDING MACHINE

 

 

Induction Pipe Bending Machine

Induction Pipe Bending Machines

Induction Pipe Bending Machine