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Induction heating, bonding

Induction bonding

Since the early 1980s, EFD Induction has been at the forefront of developing induction bonding solutions.
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What is induction bonding?

Induction bonding uses induction heating to cure bonding adhesives. Induction is the main method for curing adhesives and sealants for car components such as doors, hoods, fenders, rearview mirrors and magnets. Induction also cures the adhesives in composite-to-metal and carbon fiber-to-carbon fiber joints. There are two main types of automotive bonding: spot-bonding, which heats small segments of the materials to be joined; and full-ring bonding, which heats complete joints.


What are the benefits?

EFD Induction spot bonding systems ensure precise energy inputs for each panel. Small heat affected zones minimize total panel elongation. Clamping is not needed when bonding steel panels, which reduces stresses and distortion. Each panel is electronically monitored to ensure that energy input deviations are within tolerances. With full-ring bonding, a one-size-fits-all coil reduces the need for spare coils.


Where is it used?

Induction is the preferred bonding method in the automotive industry. Widely used to bond steel and aluminum sheet metal, induction is increasingly employed to bond new lightweight composite and carbon fiber materials. Induction is used to bond curved strands, brake shoes and magnets in the electrotechnical industry. It is also used for guides, rails, shelves and panels in the white goods sector.

What equipment is available?

EFD Induction is the world’s largest induction curing specialist. In fact, we invented induction spot curing. We also invented the U-Coil® process, the most advanced hem bonding system on the market. A self-aligning and 100 per cent repeatable system, U-Coil® ensures uniform heating with the lowest possible distortion risk. The equipment we deliver ranges from individual system elements such as power sources and coils, to complete and fully supported turn-key solutions.

 

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Induction bonding and curing
Induction bonding

Within the automotive industry, induction curing of panels is currently the primary method of choice for pre-curing adhesives and sealers for automotive closure components.

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Images

Induction heating - bonding

Induction bonding. Universal fixture for lab/ process trials on customer panels. Collage inductive. Systeme flexible en laboratoire pour essais sur ouvrants Client.

Induction heating - bonding

Full-ring bonding with two-turn flexible coil Collage

Induction heating - bonding

Aluminium hood spot bonding tool. Note: The absence of clamps, minimal nest and relatively small curing areas.

Induction heating - bonding

EFD Induction has invented the U-Coil® process, the most advanced hem bonding system on the market.

Induction heating - bonding

Induction bonding. Fully adjustable coil support. Collage inductive. Support d inducteur entierement reglable.