EFD Induction Induction Heating Systems for the Power Generation Industry
For decades EFD Induction has been bringing the benefits of induction heating to companies in the global power generation and distribution industries. The flexibility of EFD Induction systems lets them be used for practically any application in the power industry that requires heat. We also custom-make coils to suit specific applications and geometries.
The induction heating systems developed by EFD Induction are used primarily for the following tasks within the power industry:
- Brazing series connections
- Brazing turbo-generator connections
- Brazing short-circuit rings
- Solidifying bar ends
- Brazing strands / windings
- Shrink-fitting of end caps
- Cleaning varnish
- Post and pre-heating
- General shrink-fitting
- Expanding and removing of large bolts
Fast, safe and reliable induction heating systems
The key benefits of EFD Induction systems are speed, safety and reliability. When brazing series connections, for example, our induction systems’ precise heat pattern, rapid heating and narrow heat range virtually eliminate the risk of burn damage to the insulation.
Induction heating systems also minimise preparation work. This is particularly relevant when compared with flame brazing, where considerable time must be spent on protecting the insulation.
Handheld transformer for induction heating systems
EFD Induction provides a range of innovations and optional functions that further enhance productivity. For instance, we have developed a handheld transformer that incorporates a clamping mechanism. This eliminates the need for a separate clamping operation when brazing strands and wires, or when solidifying bar-ends.
Single-turn induction heating systems
We specialise in using single-turn inductors (coils) when brazing smaller-dimensioned work pieces. These coils minimise losses, which in turn reduces energy consumption.
Mobile and compact induction heating systems
The EFD Induction Minac range of mobile and compact induction heating systems is widely used by service and maintenance companies.
The small footprint, ease-of-use and manoeuvrability of a Minac make it ideal for power industry environments. A Minac is flexible, too: it is capable of performing heating tasks as diverse as brazing, pre and post-heating, shrink fitting and removing, and varnish removal. A single Minac converter supports a virtually unlimited range of custom-built coils.
Many Minac induction heating systems come in twin versions offering two independent power outputs (in effect doubling the productivity of a single system). The twin versions feature split-control panels from which each output can be controlled.
Minac induction heating systems can also be used together with separate heating stations. This lets the Minac support large, flexible coils that can be shaped on-site to fit curved or irregular-shaped work pieces.
Fast and reliable bolt-expansion system
EFD Induction’s bolt-expansion system is the proven time and labour-saving alternative to inefficient flame and resistance heating. With induction, a coil is inserted into the bolt. Controllable and localised heat is then induced directly in the bolt. The heat expands the bolt by an exact, pre-decided length, making it easy to remove the nut.
The speed and precision of induction heating prevents damage to the threads. The process is so quick there isn’t enough time for heat to travel into the thread area, and there’s no risk of rods melting inside the bolt (a common drawback with alternative heating methods).
With induction, crucial process parameters such as temperatures and dwell times are set in advance. Productivity is boosted by quick-release coils. It takes only seconds to attach new coils to the handheld transformers. The coils can be used with angle adapters to ensure smooth passage of the coil into the bolt.
EFD Induction bolt expansion systems use mobile Minac converters and elongated coils. When using a Minac Twin, one operator can work on two bolts at the same time — in effect achieving the productivity of two operators. Alternatively, two operators can work simultaneously, each with their own independent handheld transformer.
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EFD Induction, Europe's largest induction heating company, has won an order for an automatic induction hardening and quenching system from NSK of Japan, the bearing and precision parts manufacturer. The system, which is to be used for hardening automotive components, is due for delivery before the end of this year.
Read moreOil and gas contractor Bonatti has selected an EFD Induction post-weld heat treatment (PWHT) solution to help build the world's longest 13% Cr onshore pipeline. The corrosion-resistant pipeline is part of the In Salah Southern Fields project (ISSF) in the Algerian Sahara desert.
Read moreEFD Induction will be demonstrating a mobile Minac Twin output induction heating system at the International Air-conditioning, Heating and Refrigerating Exposition (AHR), to be held 28-30 January in Dallas, Texas, US.
Read moreEFD Induction, one of the world's leading makers of induction-based industrial heating solutions, has announced the appointment of Terje Moldestad as new group sales and marketing director.
Read moreMorten Lavergren has been appointed managing director of Electronic Heating Equipment (EHE), the Washington state-based coil, impeder and scarfing equipment supplier recently acquired by EFD Induction.
Read moreBjørn Eldar Petersen, a Norwegian executive with 20-plus years' experience in the global automotive industry, has been appointed CEO of the EFD Induction Group. Petersen takes over from Eivin Jørgensen, who, as planned, has stepped down on his 60th birthday.
Read moreJan Arve Fuglaas of EFD Induction Norway has been given special responsibility for sales of tube and pipe welding and normalizing systems in Asia.
Read morePeter Runeborg, formerly the Segment Manager for tube and pipe at EFD Induction Norway, has been made the company's new Sales and Service Manager.
Read moreBjørn Røsvik has been appointed the Manager of the Standardized Systems and Direct Sales Division at EFD Induction Norway.
Read moreEFD Induction, with Sweden's Royal Institute of Technology and leading research institute Swerea IVF, recently launched a 832-page book on heat treatment.
Read moreIn an important development for the induction heating industry in Asia, Hyderabad-based diagnostic testing specialist Powertest Asia has ordered two EFD Induction bolt expansion systems. The equipment is the first such EFD Induction units to enter service in the rapidly expanding Indian power gen
Read moreJeumont Electric, the France-based specialist in power generation and conversion technologies, has recently taken delivery of an EFD Induction Minac 18/25 Twin induction heating system. The Minac is being employed to wind large two-pole and four-pole rotors. Two teams use the Minac to simultaneou
Read moreAustria-based ANDRITZ HYDRO has ordered a Minac 25/40 Twin induction heating system from EFD Induction. The system will be used for copper brazing at ANDRITZ HYDRO's facility in Weiz, Austria. "This latest order means ANDRITZ companies have now purchased about 25 Minac systems from us o
Read moreAlstom Italy has purchased two EFD Induction mobile Minac 25/40 induction systems for its service activities in the electro-technical and power generation industries. The systems' first project for Alstom Italy involved scheduled maintenance on a steam turbine in Venice. The Minacs wer
Read moreEFD Induction Spain already supplies induction solutions to many of the Iberian Peninsula's leading automotive, electrical and engineering companies. But it recently opened a new chapter with the delivery of three EFD Induction Minac induction converters to Spain's two main manufacturers of wind-
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