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In-line Seam Annealing Systems

The seam annealing process is dedicated to the normalization of the Heat Affected Zone (HAZ).
In many cases the welding line must be annealed after the welding process to prevent a failure point and provide a uniform metallurgical results.

The seam annealing process is dedicated to the normalization of the Heat Affected Zone (HAZ). In many cases the welding line must be annealed after the welding process to prevent a failure point and provide a uniform metallurgical results.

Both the American Petroleum Institute (API) and the American Society for Testing and Materials (ASTM) specify that on certain grades of pipe, the weld seam needs to be processed in order to ensure that no untempered material remains.

 

 

 

In-line Seam Annealing Systems

Fast

Precise

Efficient

Resistant

ADVANTAGES

  1. Independent heating units for increased operational flexibility.
  2. Possibility to treat pipes from 30 to 660 mm OD by adopting the new linear coil with reduced width.
  3. Precise temperature management thanks to closed loop PID system comparing the requested set point with the actual temperature read by the pyrometer.
  4. Independent power control for each heating head (PID).

Technical Info

Continuous output power

450 - 600 kW

Power regulation range

0 - 100%

Frequency range

1 - 3 kHz

Voltage supply

On demand

Output Stabilization

By Thyristor Control automatic voltage regulator

Cooling Method

Water to water by Stainless Steel heat excharger

Max. industrial water temperature

27°C

Standard color

Light grey RAL 7035

Features & Options

MACHINE FEATURES
  • Power and operating frequencies optimized according to production requirements.
  • IGBT based I-Power inverter working at proper frequency
  • Special and robust inductor design using copper bars and magnetic flux concentrators cores to focus the magnetic field on the tube seam area.
  • Pyrometer for temperature control.

MACHINE OPTIONS

  • Manual or automatic seam tracking device
  • Independent power control for each heating head
  • Integrated management desk for global control of the system
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In Line Seam Annealing

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