Innovative electric vehicle motors get new heat treatment 04 May 2011

Oxford YASA Motors says it is cutting curing costs since commissioning a WF200 oven from Lenton Furnaces & Ovens for adhesive used in the construction of its electric motor.

The oven is also being used to treat an epoxy resin that is vacuum-impregnated within the motor windings to improve strength and resistance to vibration.

The spin-out company from Oxford University, based in Abingdon Oxfordshire, produces motors and generators for electric and hybrid vehicles, using a novel construction that offers very high torque and efficiency, and minimises manufacturing costs.

Nick Farrant, chief executive, says his firm selected Lenton to supply a medium sized oven to improve its manufacturing capabilities and reduce motor production costs.

"Both processes are strictly controlled, as temperature uniformity in the oven is critical to producing consistent motors," explains Farrant.

"The company will be expanding its production operation in the next six months and at that time several Lenton ovens will be used in parallel to help increase the company's production output and meet growing market demands," he adds.

Installation of the new oven removed the need for the motor manufacturer to send work out to contractors, so reducing costs and improving process control.

WF200 oven runs up to 300°C and features an internal fan to ensure rapid heat up times and good temperature uniformity This unit is the largest oven in Lenton's standard range, with an internal volume of 200 litres and polished stainless steel interior. Insulation around the chamber uses low thermal mass fibre.

Brian Tinham

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