B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 31/00 (2006.01) B21D 21/00 (2006.01)
Patent
CA 2475781
The invention relates to a method for the post-treatment of single high-grade steel blanks which have been produced from deep-drawable circles or sections of high-grade steel by means of deep-drawing, pressing, rolling and deformation. According to the invention, the completed blanks are post-treated directly after being produced, in a drum which is hard-faced with hard granulate particles and moves in a rotating manner. In this way, changes in the surface of the single high-grade steel blanks produced, caused by material stresses occurring during the production process, are avoided, providing said high-grade steel blanks with an optimum appearance.
L'invention concerne un procédé pour le post-traitement de flans d'acier spécial monoblocs qui ont été produits à partir de rondelles ou de découpes emboutissables d'acier spécial par emboutissage, estampage, laminage et façonnage. Selon l'invention, les flans finis sont post-traités immédiatement après leur production dans un tambour garni de particules granulées dures, auquel on imprime un mouvement de rotation. On évite ainsi sur les flans d'acier spécial monoblocs produits des modifications de surface dues à des tensions du matériau se produisant pendant les étapes de production, et on obtient une apparence optimale des flans d'acier spécial.
Neef Gmbh & Co. Kg
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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