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In January 1452, a waterwheel-driven Hammer Mill is founded at the rivers of the Ferndorf creek. As hammermen the three Busch brothers convert charcoal reduced pig iron into forgeable iron. According to their name the surrounding village is called: Buschhütten.

Forgeable iron bars are sold to finish forgers to make products for household, trade and agriculture, household tools like tongs, shovels, scythes, chops and agricultural equipment like hammers, anvils, and plows.

The Achenbach Iron Foundry starts its operation after the Achenbach brothers had bought the hammer mill and convert it to iron casting technology. From then on, iron parts can be produced in a much simpler way by casting. Casting liquid iron into sand molds gets only possible with the availability of hard coal in the area.

Cast iron products primarily for household and agriculture and later for industry like column ovens, oven plates, stoves, gear wheels and rolling mill rolls.

Achenbach becomes Rolling Mill Builder: the first Achenbach Rolling Mill results out of the assembly of rolling mill components which are anyway casted in the iron foundry like rolls, stands and gears. Primarily sheet mills are produced and later after the invention of coilers by Achenbach engineers: strip mills.

Rolling mills for metal sheets and later metal strips: Iron rolling mills, and later: Aluminium rolling mills, copper & brass rolling mills.

Achenbach becomes Specialist among the Rolling Mill Builders by concentration on the special requirements for rolling mills for non-ferrous metals with a big amount of R&D work. Caused by the growing importance of process technology and environment protection the product range is complemented by new rolling oil filtration systems and exhaust air purification systems.

Rolling mills for non-ferrous metals for strips and later on foils; non-ferrous metals rolling mills: 'wider, faster, thinner rolling', integration of rolling oil filtration and exhaust air purification systems operating economically and ecologically highly efficient in closed loop processes.

The System Provider Achenbach is 'Specialist' and in substantial parts 'World Market Leader' in the development and provision of machines and technologies for flat rolling and foil slitting of non-ferrous metals. For this purpose, the product range is successively extended by rolling mill automation technology, foil slitting machines and recently by an IoT platform for the optimization of the entire production process.

'All from one single source' equipment for the production of rolled and slitted non-ferrous metal strips and foils, horizontally along the value-added chain and vertically by the increase of value-added depth; complete production plants from 'Mini-Plants' up to 'Greenfield Plants' by use of a digital process data network (IoT), single machines, machinery and plant modernizations, machine components and spare parts.