摘要:
Die Erfindung betrifft eine Anfahrvorrichtung für eine Stranggießanlage, insbesondere für Rundstrangguss, zur Einführung in die Stranggießkokille, bestehend aus einem Angießelement (3) und einem mit dem Angießelement (3) über ein Kupplungselement (2) lösbar verbundenen Kopfglied (9) eines Kaltstranges, wobei
unter Zwischenschaltung eines auf dem Kopfglied (9) aufliegenden und den Kokillenquerschnitt ausfüllenden und das Kopfglied (9) vom flüssigen Metall trennenden Dichtelementes (4), der Strang nach dem Erkalten mit dem Angießelement (3) fest verbunden, das Angießelement (3) und das Kupplungselement (2) einteilig ausgeführt, die Verbindung zwischen dem Kopfglied (9) und dem Kupplungselement (2) als leicht lösbare Hakenverbindung aus geführt ist.
摘要:
The invention relates to a method for increasing the fatigue resistance of welded pipes, especially longitudinally welded large diameter pipes, comprising a weld seam (1) having a projection on the inner and outer sides. To this end, the sharp-edged, geometric transition obtained after welding, between the weld seam (1) and the adjacent pipe body (2), is rounded at least on the inner side by means of chip removing machining.
摘要:
The invention relates to a metallurgical vessel (1) for transporting melt-liquid metals. Said vessel comprises a metal jacket that receives a heat-resistant lining, said jacket comprising two stiffening rings (7,8). Said stiffening rings extend in the peripheral direction, fastened at an axial distance to each other, and are integrated into the metal jacket. Two lifting lugs (11, 11') are disposed on the exterior of the vessel on opposite sides thereof and are supported by respective shield segments (9, 9') that are linked with the stiffening rings. The transitional zone from the stiffening rings to the shield segments is rounded off. Optionally, a lid support (14) which has a truncated cross-section is fixed on the vessel rim. The shield segment is designed as a one-piece element and is provided in at least its upper part with arms (19, 19', 20, 20') that extend in both peripheral directions and whose cross-sections, in the end zones, are adapted to the respective contiguous stiffening ring and are provided with a bevel edge.
摘要:
The invention relates to a tank for metallurgical purposes intended for transporting molten metal, said tank having a metal envelope fitted with a heat-proof lining. Two lifting lugs are disposed on the outer side opposite each other, each of which is supported by a lug shield connected to the metal envelope. The lug shield is disposed in such a way that movement in vertical and peripheral direction is limited. Means are fixed on the metal envelope for receiving the own weight of the lug shield and the tank when the latter is in vertical or tilted position.
摘要:
The invention relates to a vessel for metallurgical purposes to transport molten metals, comprising a metal jacket consisting of individual tubular sections with a heat-resistant lining. Said jacket has two peripheral integrated axially-spaced reinforcing rings and two supporting journals which are placed opposite each other on the outside of said jacket, both journals being supported by a plate that is connected to the reinforcing rings. Optionally, a lid with a conical section is fastened to the rim of the vessel. The first reinforcing ring (6) that lies closest to the bottom (2) has a lug-shaped extension (17) directed upwards in the area of the plate which is configured as a shield segment (16, 16'). The second reinforcing ring (7) that lies furthest from the bottom (2) has a lug-shaped extension (18) directed downwards in the area of the shield segment (16, 16') and the shield segment is welded between the extensions (17, 18). The transition between each respective extension (17, 18) and the respective reinforcing ring (6, 7) is rounded off both in the longitudinal section and when seen from the top. Said round-offs (23, 24) fit into corresponding round-offs (25, 26) in the shield segment (16, 16') without buckling.
摘要:
Die Erfindung betrifft ein Verfahren zur Erfassung von Ungänzen an langgestreckten Werkstücken, insbesondere Rohre und Stangen mittels Ultraschall, bei dem der Prüfling und mindestens ein auf den Prüfling gerichteter Prüfkopf relativ zueinander bewegt und die Empfangssignale einer Auswerteeinheit zugeführt werden. Dabei werden die ursprünglichen digitalisierten Signale eines Prüfschusses einer Längenposition X mit denen eines Prüfschusses einer Längen position X+ Δ X verglichen und es wird die Differenz bewertet, wobei ΔX ein Vielfaches des Schussabstandes ist.
摘要:
Die Erfindung betrifft ein Verfahren zum Kaltziehen von Rohren (3) mit ultraschallerregtem Außen- (20) und/oder Innenwerkzeug wobei die Erregung unter Vorgabe einer bestimmten Frequenz und Amplitude erfolgt. Dabei wird während des Ziehvorganges mindestens die vorgegebene Amplitude in einem schmalbandigen Bereich konstant gehalten wobei der Mindestwert der Amplitude 10 µm beträgt.