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Induction heating for hardening and heat treatment

Induction hardening

EFD Induction hardening solutions are used by many of the world’s leading car manufacturers and their suppliers.
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What is induction hardening?

Induction hardening uses induced heat and rapid cooling (quenching) to increase the hardness and durability of steel. Induction is a no-contact process that quickly produces intense, localized and controllable heat. With induction, only the part to be hardened is heated. Optimizing process parameters such as heating cycles, frequencies and coil and quench design result in the best possible outcomes. 


What are the benefits?

Induction hardening boosts throughput. It is an extremely fast and repeatable process that integrates easily into production lines. It is clean, safe and typically has a small footprint. Workpieces are usually treated individually. This ensures that each separate workpiece is hardened to its own precise specifications. The optimized process parameters for each workpiece can be stored on your servers. Since only the part of the component to be hardened is heated, induction hardening is extremely energy-efficient. 


Where is it used?

Induction is used to harden numerous components. For example: gears, crankshafts, camshafts, drive shafts, output shafts, torsion bars, rocker arms, CV joints, tulips, valves, rock drills, slewing rings, inner and outer races.

 

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Induction heating for hardening and tempering
Induction hardening

What makes it so effective? More and more companies are opting for induction-based hardening solutions.

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Induction heating for camshaft hardening
Camshaft hardening

There are many reasons why induction heating is the preferred method for hardening camshafts.

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Induction heating for crankshaft  hardening
Crankshaft hardening

EFD Induction crankshaft hardening systems are a proven way to meet stringent specifications, while at the same time minimizing costs.

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Induction for hardening of large rings and gears
Hardening large rings and gears

Seamless hardening. Why induction is the smarter choice. Seamless induction hardening is the proven cost-saving alternative to thermo-chemical processes.

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Induction heating for hardening of small gears
Hardening of small gears

How to reduce distortion and costs when hardening small gears

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Induction heating for chain hardening
Chain heat treatment

An integrated induction hardening and tempering solution let you easily produce premium grade chain—a product that commands premium prices in international markets.

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Videos

Induction hardening. What makes it so effective?

Learn about the potential and benefits of induction hardening.

Crankshaft hardening - The benefits of induction heating

EFD Induction crankshaft hardening systems are a proven way to meet stringent specifications, while at the same time minimizing costs.

Images

Multi-frequency induction hardening

EFD Induction’s patented simultaneous multi-frequency hardening. The process achieves true contour hardening of small gears in well under a second.

Induction hardening heat treatment

EFD Induction is the world’s largest induction hardening equipment maker with close to 70 years experience.

Hardening of bars and shaft with induction heating

A HardLine Centerless Pusher induction hardens steel bars.

Hardening of bars and shaft with induction heating

High throughput and consistent heating outcomes are essential when heat treating bars and shafts.

Hardening of camshafts with induction heating

Customized coil for induction hardening of camshafts.

Hardening of camshafts with induction heating

We design, make and maintain customized induction coils for camshaft hardening. These formed coils deliver precise heat patterns and penetration depths for perfect hardening results.

Hardening of camshafts with induction heating

A double station EFD Induction vertical hardening machine hardening camshafts.

Hardening of camshafts with induction heating

There are many reasons why induction heating is the preferred method for hardening camshafts.

Hardening of camshafts with induction heating

Our induction camshaft hardening solutions are used by many of the leading names in the truck, bus, excavator and earth-moving equipment industries. Our systems are also widely used to harden marine camshafts.

Hardening of crankshafts with induction heating

Car crankshafts, truck crankshafts, marine crankshafts  — EFD Induction systems are used worldwide to harden every imaginable type of crankshaft in a wide range of production volumes.

Hardening of crankshafts with induction heating

An EFD Induction robot-type crankshaft hardening system in action. All our systems feature mechanical and control innovations that minimize Total Indicated Run-out.

Hardening of camshafts with induction heating

Double hardening for double productivity. The quenching phase inside a single cabinet hardening machine with twin tailstocks and centers.

Hardening with induction heating

Our centerless horizontal hardening systems combine exceptionally high throughput rates with high reproducibility.

Hardening large rings and gears with induction heating

Seamless induction hardening of large rings and gears.

Hardening large rings and gears with induction heating

Gear tooth hardening. Advanced coil design and process control software ensure short cycle times and precise repeatability.

Hardening large rings and gears with induction heating

EFD Induction gear hardening systems are divided into three categories: gap-by-gap systems, tooth-by-tooth systems and single-shot (spinning) systems.

Hardening large rings and gears with induction heating

HardLine heat treatment solutions for hardening of large rings and gears

Hardening of raceways, balltracks and gears with induction heating

EFD Induction offers hardening solutions for virtually any dimension of raceways, balltracks and gears.

Hardening of shafts with induction heating

A programmable quenching cycle at work.

Hardening of slewing ring with induction heating

Induction hardening of slewing ring without soft zone

Hardening gears with induction heating

Induction is the cost-cutting alternative to furnace case hardening of small- and medium-sized gears.

Hardening gears with induction heating

Quenching of a small gear that has been heated by the simultaneous multi-frequency method.

Hardening gears with induction heating

A small gear t has been heated with a single frequency.

Hardening steering rack with induction heating

Induction hardening of steering rack.

Induction heating - vertical hardening

EFD Induction universal vertical hardening systems are a proven method for hardening axel flanges. We also offer vertical indexing table machines that can be robot loaded for high production volumes.

Induction heating - vertical hardening

An EFD Induction vertical hardening machine in action. The chuck connection behind the workpiece lets you use the same machine for either high or medium frequency hardening.

Hardening of chains with induction heating

Chain heat treatment. An integrated induction hardening and tempering solution let you easily produce premium grade chain

Hardening of chains with induction heating

A two-lined EFD Induction chain heat treatment solution. Our unique coil design means we can considerably reduce the height of the lines.

Hardening of chains with induction heating

An optical heat sensor measures chain temperature. The sensor is just one of many quality assurance features available for an EFD Induction chain treatment solution.

Hardening of chains with induction heating

An EFD Induction engineer gives hands-on training at the start-up of a new chain heat treatment solution.

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