Every manufacturing process reaches its physical and technical limits at some point. Despite this, it is often worthwhile to think beyond these limits. This is especially true when, through the intelligent interaction of two different manufacturing processes, it becomes possible to expand the dimensions and achieve a higher degree of complexity while simultaneously using different types of steel.

Especially by combing the processes hot extrusion and laser welding, you can expand the limits by achieving:

  • higher complexity
  • dimension enhancement
  • material mix
  • flexible wall thickness

and generally, a multifunctional application.

Let’s assume a customer needs a steel profile according to the first drawing on the left (1). Manufacturing the product via hot extrusion would not be possible because of dimensional restrictions (2), but it is possible to produce single components via hot extrusion and laser welding (3) and to combine them with laser welding technology (4).

Hoesch Schwerter Extruded Profiles GmbH as part of the Business Unit Hot Extrusion cooperates with Montanstahl AG and Innostahl Engineering GmbH to provide the necessary know-how and manufacturing expertise to create high quality composite profiles at competitive prices.

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Commissioning of the Pressing Plant 60 years ago

The driving force behind the initial considerations that were given to an extrusion press in Schwerte was certain to be that of inadequacies in the production of rolled profiles. A large number of profiles were rolled in Schwerte in the forties and fifties,  but these were often in small batches of between three and five tonnes. A search was made for alternative production processes as these batches could not be manufactured economically.

The extrusion pressing of steel profiles using the Ugine-Séjour­net process, was analysed in Schwerte, commencing in 1952/53. This manufacturing process had been brought to series production in France in the meantime. This was why the inventor of this procedure, Jacques Séjournet, was contacted in Persan in June 1953. Short negotiations were followed by the signing of a license agreement on 31 January 1955. The licese fee was 35 mllion francs (around 220,000 €).

All of the important units were ordered at the end of 1955 and it was possible to start with the hall construction. The investment that this entailed amounted to an amount of around  3.2 million € when converted.

The press started to run in mid-June 1957 and produced the first 150 tonnes by September. On 24 December 1959, the license was extended by CEFILAC (this being the successor of CIEPM) to include the manufacturing of tubes using the extrusion procedure. The licensing fee amounted to 21.3 million French francs (around 90,000 €).

A satisfactory condition only took effect in the pressing plant in the middle of 1960. The maximum capacity was reached at the end of 1960, with 555 pressings in a shift. This amounted to around 70 pressings per hour. Two-shift work at the press already had to be introduced for the first time in March 1961.

The figure of 500,000 to. of products was exceeded in the pressing plant for the first time in December 2013 after its foundation in 1957. The quantity compiles around 8,300 profiles for external customers, 2,200 tubes and 1,400 pre-profiles for the drawing mill, this therefore totalling almost 12,000 different profiles. The maximum production level was 18.396 to. in the business year 1969/70.

By taking the step down the path to independency on 1 August 2016, the pressing plant that now goes under the name Hoesch Schwerter Extruded Profiles GmbH, sets a milestone in its history that already looks back on 60 years. Far-reaching synergy potentials are especially discernible with its affiliated companies Cefival S. A. and Siderval S.p.A., these being able to provide the entire Business Unit Extrusion with new chances and developments.

almawareCommissioning of the Pressing Plant 60 years ago
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