Tenova Core has been contracted by Bilstein Cold Rolled Steel LP for the design and supply of HPH (high-performance hydrogen) bell-type furnaces for installation at its facility in
The furnaces will be used to anneal steel strip coils in a 100% hydrogen atmosphere. The project scope includes: HPH heating hoods, annealing bases and JET cooling hoods as well as associated equipment and process-control systems. Bowling Green, Ky.
A special high-performance recirculation system ensures effective gas circulation and superior temperature uniformity. The annealing-base design is optimized for obtaining the lowest dew point possible and can be used for annealing almost any grade of steel strip coil. It also provides many years of dependable operation while requiring minimal maintenance. JET cooling requires no cooling water and ensures homogeneous cooling of all coils.
A bell furnace is a batch-operated heat-treatment furnace in which products are heated under a movable dome. It is used for heat treatment of sheet and light-section rolled products in a controlled gaseous medium. Tenova’s HPH system uses hydrogen as the atmosphere gas and features high-convection technology. The advantages of hydrogen compared with nitrogen include lower density, higher thermal conductivity and improved reduction potential, resulting in enhanced strip cleanliness. As a result, this technology has established itself as a standard throughout the world.
Bell furnace diagram from Industrial Heating article The Annealing Process Revealed (Part Three: Annealing of Steel Coils) Some information from Tenova Core website and from The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.