TPT November 2016

T E CHNOLOG Y

Advanced induction heating systems INDUCOTHERM’s Banyard brand is a global leader in the design and manufacture of advanced induction heating systems for pre-heating ferrous and non-ferrous billets, prior to the extrusion of seamless tube with a hydraulic press. address the needs of the aluminium micro-tubing sector. Prior to the extrusion of aluminium micro-tubing, any surface scratches or dents to the billet (before/after the process) can show up on the outer surface of the finished product. Any resultant surface damage will appear magnified on such small diameter micro-tubing.

integrity tubing having a totally uniform, homogeneous metallurgical structure. This is achieved by single-zone and multi-zone heating systems. Banyard’s VSI heating systems provide a turnkey solution to the seamless tube extruder. The latest Banyard LFi IGBT power convertor technology is utilised to give multi-zone coil energy to the billets. Some billets, having been through an expansion process prior to extrusion, can benefit from the linear temperature correction process available with multi-zone coils. The Inductotherm Group designs and manufactures advanced induction heating systems and products for virtually all metal thermal processing applications. With proven technology for every induction need Inductotherm can offer efficient, reliable and effective products to give the user the competitive edge. Inductotherm Heating & Welding – UK Email: info@inductothermhw.co.uk Website: www.inductothermhw.com

The systems are utilised in two specific areas of metal process: thin wall extrusion of non-ferrous tubes, such as aluminium tubular section for air conditioning applications, or heavy- duty extrusion of seamless steel alloy tubes for petro-chemical and nuclear applications. Light non-ferrous heaters are configured in a horizontal push format. The billet is pushed into the induction coil heated to the required temperature, with a linear temperature gradient of taper, and then transferred to the extrusion press. In recent years a significant development from Banyard has been the introduction of zero friction aluminium billet heaters. These offer special mechanical handling technology designed specifically to

These heaters have the latest Banyard LFi IGBT power convertor technology. This technology can present precise low frequency energy to multi-zone coils, giving the variable energy and temperature profile to the billet required for high quality extrusion. Pre-heating of steel alloy billets can use horizontal push through heaters or, in the case of large billets, up to 1,000kg weight, then heavy duty lift systems present the billet to a vertically mounted induction coil. In recent years increased demand for vertical steel billet heating systems, because of extruded seamless tubing, has increased the demand for high

ZF Heater from Inductotherm

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N OVEMBER 2016