摘要:
The invention concerns a dome (34) consisting of a round-shaped vessel (30) provided with an opening (28) at the top and by a cap (33) welded on said basin to close said opening (28). The basin is obtained by hot forming under pressure of a truncated blank (5) made of non tempered aluminium alloy.
摘要:
The invention relates to a forming tool for forming sheet blanks in a diaphragm press (1) of the kind comprising a openable, closed pressure chamber (4), which is divided in a gas and liquid tight manner by means of a flexible diaphragm (5). The forming tool (6) is adapted to be arranged on one side of the diaphragm and a sheet blank (11) to be formed is adapted to be arranged between the forming tool and the diaphragm. The opposite side of the diaphragm is adapted to be pressurised by a fluid being supplied at high pressure to cause the flexible diaphragm to deform and, thus, the sheet blank to be pressed against the forming tool. The forming tool (6) comprises an elongate cutting and flanging tool (7) along at least part of its periphery and/or around an intended opening in the sheet blank (11). The cutting and flanging tool (7) has a cutting edge and is displaceable, with the aid of actuating means, in an elongate slot in the forming tool towards and away from the plane of the diaphragm (5). At a first pressing pressure, the sheet blank is caused to be cut off against the cutting edge and, as the pressure is continuously increased, the cutting and flanging tool is caused to be displaced into the slot in the forming tool, so that the peripheral edge of the sheet blank is deformed towards the interior of the slot during forming of a flanged edge.
摘要:
La présente invention concerne un procédé de réalisation d'un renfort métallique (30) de bord d'attaque ou de bord de fuite d'aube de turbomachine comportant successivement: - une étape de réalisation d'un insert métallique (41) représentant la base (39) du renfort métallique (30); - une étape de positionnement dudit insert métallique (41) sur l'extrémité (54) d'une préforme (51) d'un outillage de forme (50), ladite préforme (51 ) reprenant la forme de ladite aube (10) de turbomachine; - une étape de formage d'une tôle métallique plane (60) sur ledit insert métallique (41) et sur ladite préforme (51) dudit outillage (50) par un procédé de formage à chaud superplastique.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zum simultanen Herstellen von wenigstens zwei voneinander getrennten Werkstücken (6, 7) mittels Innenhochdruckumformung. Dabei wird ein Rohling in ein Umformwerkzeug (2) eingelegt, das in seiner Innenwand (3) wenigstens einen, jeweils zwischen zwei Negativformen (4, 5) angeordneten, in Umfangsrichtung der Werkstücke (6, 7) vollständig umlaufenden und durch zwei voneinander beabstandete freiliegende Schneidkanten (9, 10) begrenzten Trennspalt (8) aufweist. Der Rohling dringt beim Umformen im Bereich des wenigstens einen Trennspalts (8) in diesen ein, wobei die Schneidkanten (9, 10) jeweils zwischen zwei Werkstücken (6, 7) einen Abschnitt (15) heraustrennen.