At present, green energy is in a stage of continuous development. Europe's centralized installation of 75% turbines remains the most important market in the wind power industry. From the early stages of development, EFD has begun to provide induction heating solutions that meet the needs of this market. Wind turbines have changed in size from a few hundred kilowatts to a few megawatts in a very short time, which has led to changes in EFD's induction heating scheme. The HARDLINE ® and MINAC ® series of products are used to adapt to the induction heating of wind power components. EFD is constantly collaborating with the market to innovate, continue to invest and develop.
Slewing ring - HARDLINE ®
Slewing bearings in wind turbines - large bearings and gear assemblies are key components in current wind turbine design, and the quality of their products directly affects the efficiency of the mainframe. The life of the slewing bearing mainly depends on the quality of the intermediate frequency quenching, and depends on the hardened layer and shape distribution, hardness, crack condition, and quenching structure. Based on its ultimate use and the resulting strength requirements, EFD offers a complete solution for single or multiple raceway induction hardening, as well as single or integral quenching of gears – HARDLINE ® .
HARDLINE ® is a fixed induction heating system designed to meet the quenching, tempering and annealing requirements of all types of workpieces in a vertical, horizontal or custom machine concept. Offering PLC and / or CNC multi-axis control, quality supervision and automated handling systems, HARDLINE ® also features a wide range of output power and frequency induction heating power supplies in series and / or parallel compensation. HARDLINE? also includes dedicated solutions for many other components.
This product range is particularly suitable for the quenching application of slewing bearing components. It is a multi-axis CNC machine with a combination of flexible and versatile machines. The SINAC S-Series induction heating power supply provides an continuously optimized automatic compensation along the output power and a compact output transformer that makes the quenching process easier to control and execute. Depending on the configuration, mechanical/metallurgical requirements, EFD can provide an inductively heated output/inductor as a preheating solution. This unique flexibility is especially effective in materials with high carbon content and quenching processes that are prone to cracking.
Gears are also a major component of the force, and carburizing processes are often used over the years. New steel grades require verification of production and development licenses for induction hardening solutions to meet specific customer requirements. To this end, EFD offers single-tooth quenching, integral one-time quenching, and the latest induction heating solutions for the patented mixing concept (MFC). In addition, EFD induction provides solutions such as atmosphere protection to improve surface quality and reduce production costs.
Generator - MINAC ®
Based on IGBT transistor technology, EFD offers a mobile solution – the MINAC ® series, which offers single or dual independent outputs, each of which does not interfere with each other. Brazing of wind turbines with parallel heads, windings, short-circuit rings, etc. is an example of a versatile application of the MINAC® series of products. Customers can use it internally in the factory or in the use of power station installations and service stations.
As Europe's largest supplier of induction heating solutions, EFD offers fast, accurate and repeatable induction heating solutions through its extensive product application experience. At present, EFD has numerous manufacturing plants around the world (Germany, France, Norway, China, UK, USA, etc.), as well as local service sales, technical support, spare parts warehouse and all necessary localization support.
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