02 Processing machinery for metallic tubes and pipes
02.04 Machinery for the heat treatment of tubes
02.04.03 Induction annealing systems for tubes
Induction annealing systems for tubes
Product category: Induction welding equipment
Elestar produces and installs systems for longitudinal high-frequency welding of pipes derived from cold-rolled or hot-rolled steel strips. The adequate positioning of the heating inductor and the versatility of the profiling line make it possible to produce a wide range of pipes and profiles welded at a very high speed. The quality of the products and the continuous search for new solutions also make it possible to weld aluminium, ferritic and austenitic stainless steel, copper and brass tubes. Induction welding uses alternating currents generated by high power circuits. The range of frequencies used is between a few hundred Hz up to 2 MHz.
In induction heating systems the average frequency is used (the range of frequencies used is between a few hundred Hz and 50 kHz) because the induced currents spread to greater depth in the metals, allowing for deeper heat treatments, such as:
In-line annealing of stainless steel tubes for "BRIGHT ANNEALING" in a reducing atmosphere.
These systems are able to perform the bright annealing of stainless steel pipes at 1100 °C and the subsequent cooling down to the outlet temperature of about 50 - 100 °C, all in line and in a reducing atmosphere (hydrogen).
We are able to supply all the accessories for complementary applications to the induction heating system, for example:
Cooling towers, refrigeration units, heat exchangers. Mechanical support of the output stage of A.F. adjustable on the three orthogonal axes to better adapt the heating inductor to the production line. Infrared pyrometric system for the control and management of the welding and/or heating temperature. Automatic electronic system for regulating the heating power in relation to the speed of the production line. Customised inductor-holder extensions, inductors and impeders. Cabinets with dimensions, connection features and colours upon request. Mechanical equipment with computerised management for handling the AF/MF output stage or for the material to be treated.
Elestar is a company founded in 1995 that designs, manufactures, markets and installs industrial induction heating systems for metals all over the world.
By appropriately choosing the main operating parameters (power, frequency, heating time, shape and size of the heating element), it produces a wide range of induction heating systems, used for different applications.