THERMOPROCESSING PLANTS AND EQUIPMENT FOR ALUMINIUM ROLLING MILLS
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THERMOPROCESSING PLANTS AND EQUIPMENT ... FOR ALUMINIUM ROLLING MILLS

Preheating and Homogenizing of Rolling Slabs | Pusher Type Furnace Preheating and Homogenizing of Rolling Slabs | Cartridge Furnace Preheating and Homogenizing of Rolling Slabs | Pit and Chain Conveyor Furnace Rapid Slab Cooling | HiPreQ® Slab Quench Heat Treatment of Plates and Extruded Products | HHT (horizontal heat treatment) Line Continuous Heat Treatment of Strip | Strip Flotation Line with Furnace and Quench Annealing and Cooling of Strip Coils | Chamber Furnace Annealing and Cooling of Foil Coils | Chamber Furnace Homogenizing and Stress Relieving of Cast Rolling Slabs and Billets |...

Otto Junker GmbH Established in 1924, OTTO JUNKER GmbH draws on more than 90 years of experience and continuous product development. The company is represented by subsidiaries, service agencies and sales offices all over the world. The product range embraces melting, casting, heating and heat treating equipment for the Aluminium and Copper industries as well as melting and casting equipment for iron and steel foundries. Our foundry in Lammersdorf produces high-grade sand castings from iron, nickel and cobalt-based materials, both as cast and fully finished. In the attached machining...

Pusher furnace systems are used to preheat and homogenize rolling slabs prior to hot rolling. They deliver outstanding throughput rates at maximum efficiencies (temperature uniformity, energy consumption, automation), especially with large lots. These furnaces are used as standalone units or in parallel configurations synchronized via a common handling system. Furnace: ■ High-convection technology for rapid heating and cooling ■ Gas heating ■ Heating and homogenizing in air or nitrogen / protective gas atmosphere ■ Model-based control of the furnace energy input systems to minimize cycle...

Products: Rolling slabs in all aluminium alloys Reference dimensions: ■ Length: ■ Width: ■ Thickness: ■ Weight of slab: Charge weight per furnace: 200 t - >1,000 t Pusher furnace systems consist of the following main assemblies: ■ Loading table ■ Upender ■ Pusher system ■ Furnace ■ Extractor ■ Downender ■ Skid-shoe handling Options: ■ Slab buffering ■ Cooling system ■ Multi-furnace charging machines ■ Side-loaded pusher furnace design

I Preheating and Homogenizing of Rolling Slabs Cartridge Furnace Cartridge furnaces are used to preheat and homogenize rolling slabs prior to hot rolling. These furnaces provide very high levels of flexibility and maximum efficiency (temperature uniformity, energy demand, automation), especially with small lots and loads coming in many different sizes and alloys. The furnaces are set up in parallel configurations, permitting a shared use of handling equipment that serves multiple units. Furnace: ■ High-convection technology for rapid heating and cooling ■ Gas or electrical heating ■ Heating...

Furnace: Rolling slabs in all aluminium alloys Reference dimensions: ■ Length: 5,000 - 7,000 mm Charge weight per Furnace: 100 - 200 t Cartridge furnace systems consist of the following main assemblies: ■ Loading roller conveyor ■ Measuring roller conveyor ■ Mobile roller conveyor ■ Charging machine with upender and feeding boogie ■ Furnaces Options: ■ Slab buffering ■ Cooling system

I Preheating and Homogenizing of Rolling Slabs Pit Furnace and Chain Conveyor Furnace Pit furnaces and chain conveyor furnaces are used to preheat and homogenize rolling slabs prior to hot rolling. Pit furnaces can provide very high levels of operating flexibility with small product lots and different slab sizes and alloys. ■ The furnace chambers are usually loaded by a slab crane. ■ Designed for preheating or homogenizing of slabs ■ Matching cooling system delivers a defined cooling ramp Chain conveyor furnaces are noted for their low space requirement for small product lots. The rolling...

I Rapid Slab Cooling HiPreQ® Slab Quench These systems are used for fastest possible cooling down rolling slabs from their homogenization temperature to the rolling temperature for metallurgical reasons. By reducing dwell times in the pusher furnace or cartridge furnace, they can increase plant capacity. An slab quench system consists of the following main components: ■ Transfer roller conveyor from the pusher / cartridge furnace to the slab quench ■ Slab quench ■ Transfer roller conveyor to the soak chamber ■ Soak chamber Cycle time: 5 min

Heat treatment lines for aluminium plate are built in accordance with aerospace industry specifications AMS 2750 E and AMS 2772 G for the heat treatment of aluminium alloys. A horizontal heat treatment of plates and extruded products offers major benefits compared to vertical processes: ■ Transfer of plates and sectional products without damaging or scratching the metal ■ Homogeneous metallurgical properties over the product‘s full length and width: ■ Uniform heating on both sides due to high-convection technology ■ Temperature accuracy in the metal: ± 1.5 °C ■ Temperature accuracy in the...

Products: Plates and extruded products in heat-treatable 2xxx, 6xxx, 7xxx series aluminium alloys for aircraft and automotive industry applications. Reference dimensions: ■ Width: up to 4350 mm These heat treatment lines consist of the following main assemblies: ■ Loading roller conveyor ■ Furnace ■ Main cooling zone with hard and soft quench ■ Cool-down section ■ Dryer ■ Unloading roller conveyor Extruded products: ■ Wall thickness: up to 250 mm

Continuous Heat Treatment of Strip Strip Flotation Line with Furnace and Quench Strip flotation lines are used for the continuous horizontal heat treatment of aluminium strip for the aerospace and automotive industry. The furnace and cooling sections both operate on the strip flotation principle, supporting the running strip on an air cushion as it is heated, air cooled, and dried. The proven OTTO JUNKER nozzle system ensures high heat input and stable non-contacting strip movement that is particularly gentle on the product. The system‘s high heat transfer and perfect centering action...