Fandrich R.,Stahlinstitut VDEh |
Jung H.-P.,Deutsche Edelstahlwerke GmbH
Stahl und Eisen | Year: 2010
Since its beginnings in the second half of the 19th century ingot casting technology has undergone a dramatic evolution. After continuous casting was introduced in the 1960s, ingot casting production has concentrated increasingly on large-dimension and niche products, which either cannot be coped with by continuous casting or are needed only in very small quantities. Downhill casting was gradually replaced by uphill casting. Refractory materials and casting fluxes have been substantially sophisticated. The quality and cleanliness of ingots must keep pace wiith the constantly growing requirements. Here modern special remelting processes are of decisive importance, as they have the potential to further improve the cleanliness of cast ingots. The smart combination of the various processes enables steel grades to be produced which, also in the furture, will make ingot casting the only choice in many applications. Source
Biskup M.,Deutsche Edelstahlwerke GmbH
MPT Metallurgical Plant and Technology International | Year: 2010
Deutsche Edelstahlwerke, a leading producer of long specialty steel products, manufacture mandrel bars and supplies them to nearly all seamless tube rolling mills of the world. Approximately 5,000 mandrel bars with diameters between 50 and 350 mm are produced ready-to-use by Deutsche Edelstahlwerke every year. The manufacturing process begins with the scrap, which is melted in a 130 t electric arc furnace at the steelworks. A certain ratio of the alloying elements chrome, nickel, molybdenum, tungsten, vanadium and cobalt is required to produce the desired material properties depending on the intended purpose of the material. The machine puts the bar in constant rotation and measures the profile of the mandrel bar using an adjusting device, which runs its sensors along the bar and measures its deflection. The straightening process is then started automatically. Certain separating agents and lubricants are then applied to the mandrel bar in a spiralled manner before it is returned to the process flow. Source
Raedt H.-W.,Hirschvogel Automotive Group |
Wilke F.,Deutsche Edelstahlwerke GmbH |
Ernst C.-S.,Christian Simon Ernst
Stahl und Eisen | Year: 2015
The Lightweight Forging Initiative has, during phase I, demonstrated a lightweight design potential of 42 kg in the powertrain and chassis of a passenger car. This successful undertaking is now being continued in Phase II in the light commercial vehicle segment ("Light Duty Truck" according to American standards). A vehicle was dismantled at f ka Aachen and all the components were documented. In hands-on workshops, material, forging and conceptual lightweight ideas were generated. During Phase II, greater focus is being placed on materials compared to the first phase. A study at IPEK - Institute of Product Engineering at Karlsruhe Institute of Technology (KIT) analysed the quantitative lightweight potential of stronger steels for transmission applications. This makes it possible to quantify the cost of lightweighting using stronger transmission steels. Source
Deutsche Edelstahlwerke GmbH | Date: 2011-05-03
Unwrought and semi-wrought common metal for further manufacture, namely, stainless steel and bright steel; semi-finished products of steel in the form of rods, plates, sheets, billets, blocks, wire, profiles, screw rings; auxiliary welding materials of metal, namely, welding wires, welding bands, and welding rods.
Deutsche Edelstahlwerke GmbH | Date: 2015-03-05
Common metals and their alloys, unwrought or semi-wrought, namely, steel, stainless steel and bright steel; steel in the form of rods, plates, sheets, billets, blocks, wire, profiles, and ring-shaped fittings; metal welding rods and wire.