Welding equipment - SEIT ELETTRONICA - #2

Seit Elettronica was founded in 1979 with the purpose of building high frequency induction generators to weld eyewear glasses components and has become in a few years the world leader with more than 10,000 machines manufactured and sold throughout the world. Its expansion has led to the applications not only in the field of the eyewear sector and has become a leader in the mechanical, electronic sectors and new technologies through the study and construction of the products in its departments of carpentry, mechanics and electronics. Seit Elettronica was the first in Italy to project and build welding generators for Titanium spectacles: many production lines have been installed since then and improvements led to the fulfillment of a complete technology including the casting of titanium for the components.

Pushed by its technological innovation, Seit Elettronica certainly could not miss in the construction of lasers for welding ND YAG and C0₂ for the marking and cutting. The updated knowledge of laser technology, along with more modern engineering gave birth to the exclusive technology of the LaserBridge, with two patents obtained by this revolutionary system.

Seit elettronica is also well-known in dental and goldsmith with specific ranges of MF and HF induction centrifugal machines, lasers and the lost wax.

The research has led the Seit Elettronica to build and to patent several electronic circuits to build welding systems with different frequencies and powers up to 50KW and to better meet the needs of customers specializing itself in the construction of all media and automation related to welding.

Especially for the industry, Seit elettronica is a leading manufacturer of MF and HF induction heating for industrial applications, or equipments such as:

> induction generators with separate heating head or monoblock

> complete welding stations and heat treatment

> HK shrinker for spindle holder (s electromagnetic induction heaters for holders held high rigidity and ensure minimum vibration even at high speed rotation).

> optical pyrometers high precision

> automated welding systems with operating in the alloy of silver, tin or deoxidizing liquid

These systems induction heating in high and medium frequency can make heat treatments (tempre, ricotture) or saldo-brasare with all kinds of metal or conductor (steel, copper, iron, brass, etc.). Quickly high quality and industrially repeatable.

The generators can have one or two separated heads, easy to apply to pneumatic cylinders and robotic systems, and can be connected to the control serial port RS232 via PC / PLC.

The operational advantages of induction welding, despite dl other types of welding flame, are mainly:

1. Fast Cycle Times - Induction heat is produced instantly and directly within the part being heated.

2. Ease of automation and flexibility of integration

3. Easy use of the machinery

4. Accurate Heat Zones - Through the formation of an inductor you can pinpoint a heat zone, small or large, without affecting surrounding areas.

5. Environmently Friendly: Induction Heat is a clean heat and does not produce harmful emissions or loud noise into the enviroment.

6. Economical to run: Induction heating uses electrical energy, which is much more cost effective than gas fired heating systems.

7. Consistent and Repeatable: Once a process is set with induction heating, the process will be consistent from day to day, month to month.

8. Easy to Maintain: With Induction Heating, there are not flames to constantly adjust or resistive electrodes to maintain.

The principle of the induction heating can be briefly explained as follows: The frequency generator produces the magnetic field around the piece to heat, through the alternating current that pases through the inductor coil, which is generally made of a electrolytic copper tubing, either round or square shaped of variable diameters from 1,5 - 5 milimeter in which cooling water passes through. The generator output power determines the heating speed of the piece.

Since the induction coil plays a fundamental role in the induction process, the experts from Seit Elettronica are at complete disposal of their customers to study and to realize the best inductor design for their application. There is a relation between the frequency of the alternating current and its penetration depth into the material; the generators produced by Seit Elettronica can therefore be subdivided in accordance to various application requirements, as follows: