EFD Induction is present in a series of industries for preheating—primarily the automotive, cable and wire, electrotechnical, and tube and pipe industries. In many cases, our preheating solutions are integrated into production lines.

Using induction rather than gas or a furnace for preheating has several advantages. Heat transfer is direct—minimizing heat loss and energy consumption while increasing the production rate and improving quality.

The heat can also be controlled precisely. This makes it possible to reduce the temperature when welding and then achieve a lower cooling rate. Less risk of cold cracking and excessive hardening are some of the benefits.

And you can forget heat-spreading flames. You get a better working environment, less need for cooling and a lower fire risk.

Minac
Sinac
HeatLine
Coils

Minac

Mobile heat generators

MOBILE, FLEXIBLE AND EASY-TO-USE

Wide range of applications.

Brazing, shrink fitting, hardening, curing, straightening, heat treatment, etc.

Versatile.

Suitable for heating all kinds of electrically conductive materials like copper, aluminum, steel, stainless steel, brass, titanium, etc.

Twin power output.

Many models come in a Twin version featuring two independent power outputs that can operate simultaneously.

Mobile induction.

You can move it around a workshop or factory floor. Can be loaded into a car or van and transported to work sites.

Complete range.

Available with maximum intermittent output power of 10-220 kW (6-140 kW continuous) and a frequency range of 10-280 kHz.

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To learn more about Minac please download the brochure or contact your nearest EFD Induction office.

Minac - Mobile heat generators

Sinac

Universal heat generators

Choosing Sinac gives you more than the market's most advanced, most reliable induction heating systems. You also get easy access to EFD Induction’s global service, training and spare parts network. This network—which is made up of manufacturing plants, service centers and local representatives—means you are never far from qualified help and support.

Opting for Sinac also ensures you get the best possible solution tailored to your specific needs and conditions. Prior to designing your system, our engineers, metallurgists and material experts assess your requirements. Testing and computer simulation at our labs guarantee you receive equipment which is optimized to your applications and which can be painlessly integrated into existing production lines and processes.

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To learn more about Sinac please download the brochure or contact your nearest EFD Induction office.

Sinac Universal heat generators

HeatLine

Industrial heat processing systems

HeatLine is EFD Induction’s family of systems for melting and forging applications. A comprehensive range, HeatLine systems feature serial and/or parallel compensated induction power sources for a wide range of output powers and frequencies.

HeatLine’s serial technology is built around robust, high-uptime IGBT transistors. Our parallel technology features thyristor, IGBT and MOSFET components. Each HeatLine converter offers automatic load matching, a single microprocessor-based control board and integrated capacitors.

In addition to systems for melting and forging, HeatLine offers solutions for graphite coating, wire and strip heating, spring wire rolling, glass melting, graphite susceptor heating, galvanizing, food and chemical vessel heating, and other special applications.

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To learn more about HeatLine please download the brochure or contact your nearest EFD Induction office.

Heatline Induction Melting and Forging Equipment

Induction coils

Having the right coil—and keeping it in the best possible condition—is critical to the efficiency of your induction solution. After all, the coil is the component that actually delivers the heat to the workpiece.

Our induction coil services cover all your coil needs: from coil design through to coil manufacture, installation, maintenance, repair and replacement.

Coil design

Correct coil design is essential to cost-effective induction heating. This service ensures you get design customized to your heating applications and materials. Which, in turn, means that you get the right heating patterns and your induction heating power supply delivers maximum output. You can use the service when introduction induction heating for the first time, or when upgrading existing coils.

Coil database

Each EFD Induction coil is documented in a database containing all essential information. This makes it quick and easy for us to repair and replace your coils with constant quality. You can use the service when introducing induction heating for the first time, or when upgrading existing coils.

Click to download the brochure:

Automotive
Cable and Wire
Electrotechnical
Tube and Pipe

Induction preheating in the automotive industry

Induction preheating is ideal for reducing the risk of cracking and hardening structures. The reason is that induction generates heat in the material itself, which means that the surrounding temperature is lower than the one generated in the material. This heat is also more accurately controlled than a gas flame. This makes it possible to reduce the temperature difference in the welding zone and achieve a lower cooling rate—particularly important with laser beam welding, where the heat is focused on one single welding point.

What’s more, preheating and welding can occur simultaneously with induction-assisted laser beam welding. You can speed up production without jeopardizing the quality.

Another area of preheating where EFD Induction operates is the shrink fitting of gear wheels. Here again the advantages of induction heating are clear—fast, accurate and controllable heat. The induction equipment is also easy to fit into your existing production line.

Induction preheating the cable and wire industry

EFD Induction supplies numerous preheating solutions for the cable and wire industry. Heating before the extruder is the most common induction application in a cable production line. Using the preheater will decrease the cross-linking time and enable a faster line speed.

Preheating with induction instead of with a conventional method directly transfers the heat to the wire or the cable core. The material is heated to the right temperature in a very short time (exactly how short depends on the line speed and the coil length).

Induction also means that the actual hardening process begins at the core. The result is better insulation with lower porosity.

Induction preheating in the electrotechnical industry

EFD Induction offers induction equipment, which performs a variety of preheating tasks within the electrotechnical industry. Some examples are induction preheating of axles and frames before welding, and heat softening of bars before bending.

The purpose of preheating is to reduce the risk of cracking and hardening structures. Induction allows accurate heat control—time and time again. You get exactly the result you require. What’s more, the heat is generated directly in the material, which allows you to speed up the preheating process.

Induction preheating in the tube and pipe industry

Induction produces quick, accurate, controllable and repeatable heat. This makes it an excellent method for preheating tubes and pipes to prevent cracking, reduce hardening structures and increase welding speed.

EFD Induction offers a series of solutions for induction preheating within tube and pipe. Some examples are heating prior to welding, tin remelting, galvanizing, pipe forming and bending, and application of plastic powder or paint to tube.

You can also use induction preheating to get better adhesion of insulation round heating pipes (compare with the process of adhering insulation round cables and wires).

News archive
Press releases

ArcelorMittal Fontaine chooses EFD Induction

Belgium-based steel wire specialists ArcelorMittal Fontaine has bought an EFD Induction Sinac induction generator for pre-heating steel strands. The Sinac is a low- frequency 200 kW model.

Bolt heating on a steam turbine

The use of induction heating for bolt expansion in high-pressure turbines is a powerful business tool.

This case story from Italy illustrates the benefits—speed, reliability, safety—that make Minac induction heaters ideal for heating large bolts.

Induction heating of wire ends

Coils made of varnished copper windings are essential to a vast range of electrical components and appliances, automobile starters and generators being only two examples.

Preheating of turbine

The EFD Induction technician were rushed to the platform to heat and remove the turbine’s thrust collar, auxiliary gear and coupling hub from the turbine rotor.

Induction forging of axel shafts

When it enters passenger service in 2006 the Airbus A380 will be the world’s only twin-deck, four-aisle airliner. EFD Induction France is proud to play a key role in getting—and keeping—this new flagship of the Airbus family airborne.

Induction pre-heating of wire

Nokian Tyres is not only the largest tyre manufacturer in the Nordic countries, it is also one of the most profitable tyre makers in the world. One reason behind the company’s success has been its unrelenting search for intelligent production processes that maintain quality while simultaneously cutting costs. A perfect example of this approach is the changeover to highfrequency induction heating equipment from EFD Induction for the pre-heating of wire.

Welding copper and steel together with induction

EFD Induction’s Minac induction heating equipment and services save the production process of Norwegian customer NLI A/S, and provide a rapid return on investment.

Induction preheat the wire ends prior to coating

Flexyform manufactures components for women’s lingerie and delivers to famous brands such as Playtex, Lou and Sarah Lee. A Minac 6 Twin from EFD Induction helps Flexyform maintain its quality and cost levels.

Pre-heating of pipes before welding

The Tampen Link project in the North Sea underlines the amazing versatility of induction heating. In this case, EFD Induction expertise is helping weld a branch pipe onto a 20’’ main high-pressure gas pipe located 145 m below the surface of the North Sea… without any interruption in the flow of gas!

Induction heaters for heating the stubs on anode rods

A cleaner, safer, more comfortable working environment is a more productive, more profitable working environment. Everyone knows this. But not everyone realizes the contribution made by induction technology to better working conditions. Thorleif Steinmoen of EFD Induction Norway reports on how induction heating helped improve operations at Europe’s largest aluminum plant.

Induction heating of bearing

It takes a special kind of company to work for the offshore oil and gas industry. People have to be tough, adaptable and mobile. As for equipment, it has to be compact enough to be mobile, yet rugged enough to perform under demanding conditions. EFD Induction is therefore extremely proud to report on its growing involvement with offshore customers.

Pre-heating of stabilizer bar ends

The next time you watch a Formula One race on TV, you can be sure that most of the cars on the track are equipped with suspension springs from Eibach. In fact, wherever high-performance vehicles have to endure extreme conditions, chances are many of them will be fitted with Eibach suspension solutions.

Induction pre-heating of tube

When manufacturing a television or computer monitor, it is essential that the cathode ray tube be correctly mounted. To achieve this, a so-called ‘shrinking frame’ is attached to the cathode tube and shrunk to fit its outer dimensions.

Wire preheater system chosen by US manufacturer

A major US wire and cable manufacturer recently ordered an EFD Induction preheating system. The system will be used for heating prior to extrusion.

Post weld heat treatment delivery

Oil 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.

Miebach orders EFD Induction equipment for laser welding

Hugo Miebach GmbH, the global market leader in coil joining welding technology, has ordered EFD Induction equipment to integrate into three types of its laser welding systems. The EFD Induction equipment comprises Sinac induction heaters to pre-heat and anneal the weld zones.

Powertest Asia orders EFD Induction bolt expansion systems

In an important development for the induction heating industry in Asia, Hyderabad-based diagnostic testing specialists 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 generation services market.

EFD Induction to display doubled productivity at AHR Dallas show

EFD Induction will be demonstrating a mobile Minac Twin induction heating system at the International Air-conditioning, Heating and Refrigerating Exposition (AHR), to be held January 28-30 in Dallas, Texas.

EFD Induction Worldwide

EFD Induction has to date installed thousands of heating solutions for a wide range of industrial applications—bringing the benefits of induction technology to many of the world’s leading manufacturing and service companies. EFD Induction has manufacturing plants, workshops and service centers in the Americas, Europe and Asia.

We are RESPECTFUL, RELIABLE, COOPERATIVE, PASSIONATE.