Induction Wire and Cable Heating

Induction wire and cable heater is also used for the induction preheating, post heating or annealing of metallic wire along with the bonding/vulcanization of insulating or shielding within various cable products. Preheating applications can include heating wire prior to drawing it down or extruding. Post heating would typically include processes such a bonding, vulcanizing, curing or drying paint, adhesives or insulating materials. In addition to providing accurate heat and typically faster line speeds, the output power of the induction heating power supply can be controlled via the line speed of the system in most cases.

What is induction wire and cable heating?

HLQ Induction offers solutions for many applications from structural ferrous and non-ferrous wires, copper and aluminium cable and conductors to fibre optic production. The applications are very wide ranging including, but not limited to, forming, forging, heat treatment, galvanizing, coating, drawing etc. at temperatures from 10’s of degrees to in excess of 1,500 degrees.

What are the advantages of induction wire and cable heating?

The systems can be employed as your total heating solution or as a booster to improve the productivity of an existing furnace by acting as a preheater. Our induction heating solutions are renowned for their compactness, productivity and efficiency. Whilst we supply a range of solutions, most are optimised to meet your specific requirements.

Where is induction wire and cable heating used?

Typical applications include:

-Drying post cleaning or removing water or solvent from coatings
-Curing of liquid or powder based coatings. Providing a superior bond strength and surface finish
-Diffusion of metallic coating
-Pre heating for extrusion of polymer and metallic coatings
-Heat treatment including: stress relieving, tempering, annealing, bright annealing, hardening, patenting etc.
-Pre-heating for hot-forming or forging, especially important for specification alloys.

The unrivalled accuracy, control and efficiency of induction heating makes it ideal for many key tasks in the manufacture and processing of wire and cable products.

Heat several different wire diameters to 204°C (400°F) in 0.8 seconds with the same induction coil.

Equipment: DW-UHF-6KW-III induction heater

Process Steps:

1. Clean and apply 204°C (400°F) Tempilaq over the length of the wire.
2. Apply induction heat for 0.8 seconds.

Results and Conclusions:

All wires exceeded 204°C (400°F) over full length of coil. Further development testing will be required to optimize the equipment for the application for the fastest rates available. Tuning and optimization of the equipment would need to be done with a continuous wire feed in the unit.

Based on the results, a 6kW induction heating power supply can be used, and further development testing would guarantee the desired rates. A 10kW induction heating power supply will recommended. The additional power will make the tuning and development testing easier for the end user and leave additional power for production rates to be easily increased in the future.