NetComposites
Airtech

Harper Releases Performance Results of Production Scale Oxidation Oven

06 October 2015

Harper Releases Performance Results of Production Scale Oxidation Oven

Initial data on Harper International's 3 metre wide production scale Oxidation Oven for carbon fibre manufacturing has demonstrated outstanding performance for key metrics including air velocity uniformity and temperature uniformity.

According to Harper, data was acquired at temperatures up to 280°C and air velocities up to 4 metres per second. It explains that, one of the most critical performance metrics in an Oxidation Oven is air velocity uniformity. Harper says its Oxidation Oven uniformity measured 2.2%. Air velocity uniformity across the entire tow band is essential as the PAN stabilisation phase is an exothermic reaction. If there are low velocity regions, the reaction can run away, causing deflagration. If there are high velocity regions, it can cause damage to the delicate PAN fibre.

Harper's claims its design also demonstrated temperature uniformity of +/- 2.5°C throughout the entire heated length. Temperature uniformity is critical in carbon fibre manufacturing because it enables higher and more efficient rates of production.

As greater production rates have led to wider, taller, and longer oxidation ovens, it is a critical challenge to improve velocity and temperature uniformity while simultaneously increasing the oven size. "Harper's Oven design offers our customers enhanced performance and increased confidence in their fibre manufacturing," commented Bill Stry, PhD and Renee Bagwell, PhD, Senior Process Technology Engineers at Harper. "We took on the task of engineering an Oxidation Oven that addresses today's and tomorrow's market demands for efficiency and quality, and the data obtained during full scale testing shows our success."


Photo provided by Harper




Share this story


Related / You might like...

Web Industries to Purchase Seattle-area Land for New Aerospace Composite Materials Processing Plant

Web Industries has signed a letter of intent with East Forty to purchase 12 acres of land for a manufacturing plant in Marysville, Washington, north of Seattle, US.

GM Recognises CSP and Teijin with Distinctive Innovation Award

Continental Structural Plastics (CSP), along with its parent company Teijin, were honoured by General Motors with the automakers Innovation Award at its 27th Annual Supplier of the Year awards ceremony held in Warren, Michigan, US.

JEC Startup Booster Worldwide Tour

Launched in 2017, JEC Startup Booster is the leading and unique start-up competition in the world of composites in which hundreds of start-ups participate to pitch their breakthrough innovations in front of a jury of experts from international groups and companies involved in the making of innovative materials.