About EFD InductionSitemapPrint page • Choose language:
Induction heating for the electrotechnical industry

Induction heating for the electrotechnical industry

EFD Induction equipment performs a variety of crucial tasks in the electrotechnical industry. Most of our solutions for this sector fall into the following categories:

 

Induction brazing

Induction brazing in the electrotechnical industry

Brazing electrotechnical components is tricky—copper isn’t just a good electric conductor, it’s also a good thermal conductor. You have to heat fast and accurately so the heat doesn’t spread and overheat other parts. And this is exactly what induction brazing is all about—fast accurate heat—and that’s why it is particularly suitable for electrotechnical brazing.

 

Most of our electrotechnical brazing solutions are used for:

  • Induction brazing of bars, strands, rings and wires in motors, generators and transformers
  • One-shot or segment brazing of short circuit rings 

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 postheating in the electrotechnical industry

Our compact and mobile induction equipment performs a variety of induction postheating tasks within the electrotechnical industry:

  • Softening of copper and aluminum bars after bending to reduce the risk of cracking
  • Post-extrusion heating of cable cores
  • Removing of shrink-fitted parts (out-mobile Minac equipment can perform this task, even in locations such as oil rigs, power stations, wind farms, etc.)
Minac 18/25 Twin

Minac

Mobile heat generators

 

The Minac range of complete mobile induction systems is even easier to use than its acclaimed predecessor.

 

A ready-to-use system, all that has to be done upon delivery is: 1) attach a coil, 2) connect supply voltage, 3) connect cooling water. In models with closed cooling systems, only the supply voltage needs connecting.

 

Once installed, the Minac's clear, menu-based and multi-language control panel ensures maximum ease-of-use. Moreover, this simplified control/user interface is common to all Minac equipment.

 

Many Minac models come in "Twin" versions offering two independent power outputs. The Twin versions feature split control panel displays—one for each power output.

 

The Minac is simple to operate. Handheld transformers (HHT) feature on/off and precise power controls. In fact, the HHT is as easy to operate as a regular electric drill. Flexible, water-cooled cables connecting the HHT to the converter allow easy access to workpieces.

 

 

 

 

 

 

 

Product sheet :  Minac
Sinac

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.      

 

Product sheet :  Sinac
Induction brazing
There are many ways to braze. So why choose induction? Induction heating technology is steadily displacing open flames and ovens as the preferred heat source in brazing.
The Minac range of complete mobile induction systems is even easier to use than its acclaimed predecessor.
Sinac is EFD Induction’s range of complete stationary heating systems.
The use of induction heating for bolt expansion in high-pressure turbines is a powerful business tool. It’s faster than resistance and flame heating.
Japanese manufacturing giant orders ‘Minac’ induction heating systems

EFD Induction lands major brazing orders from India-based multinationals
EFD Induction, one of the world’s leading makers and suppliers of industrial heating solutions based on induction technology, is reporting a significant series of orders from multinational companies operating in India



Bolt heating on a steam turbine

Hardening of slewing rings

Induction heating of wind power generators

Induction heating of wind power turbines

Induction brazing of short circuit-ring

Brazing aluminum for air conditioners

Induction heating of towel rails

EFD Induction solves bolt heating challenges

How to remove electrical insulation varnish from copper lead bundles

What role has induction technology played in the promotion of green wind power?

Induction bolt expansion
Internal heating of big bolt for longitudinal expansion on turbines.


Bolt heating
Induction heating - Bolt heating. Heating of bolt showing heating pattern.


Shrink fitting of gear wheels
A standard EFD Induction converter is fitted with a specially designed coil that heats wheel rings for quick disassembly.


Shrink fitting of bearing and lock rings
A standard EFD Induction converter is fitted with a specially designed coil that heats wheel rings for quick disassembly.


Shrink fitting of locking rings to a shaft
A standard EFD Induction converter is fitted with a specially designed coil that heats wheel rings for quick disassembly.


Induction brazing of aluminum tube to block
There are many reasons why using induction heating instead of gas for brazing is clearly beneficial.


Induction brazing of strands
Brazing of strands in generators, transformers and motors.


Induction brazing of flexible strands
Brazing of flexiblecopper strands to copper bar.