摘要:
Methods and apparatus for forming products having at least one first section 102 having a first wall configuration and at least one second section 104 having a second wall configuration, the second wall configuration different from the first wall configuration. A variation in wall configuration along the axis of the tubular product 100 may be designed to be axially asymmetrical at any segment of the axis 101.
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.
摘要:
Die Erfindung betrifft eine axiale Abstützung für eine im Ultraschallbereich in Eigenfrequenz schwingende Matrize, insbesondere zum Draht-, Stangen- oder Rohrziehen, wobei die in einer Werkzeugaufnahme angeordnete Matrize mit Ultraschallschwingungen übertragenden Erregern in Verbindung steht. Erfindungsgemäß sind ein oder mehrere Lagerungselemente (9, 9.1) vorgesehen, die in der Werkzeugaufnahme (2) lagefixiert sind und mit der Matrize (M) eine lose Verbindung bilden. Die Lagefixierung der Lagerungselemente (9, 9.1) in der Werkzeugaufnahme (2) befindet sich dabei in einem Schwingungsknoten (K) der Ultraschallschwingungen.
摘要:
Methods and apparatus for forming products having at least one first section 102 having a first wall configuration and at least one second section 104 having a second wall configuration, the second wall configuration different from the first wall configuration. A variation in wall configuration along the axis of the tubular product 100 may be designed to be axially asymmetrical at any segment of the axis 101.
摘要:
A wire rod is payed out from a pay-off stand and descaled in a descaling process. After preheating to a predetermined temperature by a preheating device, it is subjected to a lubrication pretreatment through a zinc calcium phosphate solution applied with ultrasonic wave in the lubrication pretreatment process. After rinsing process, the lubrication-pretreated wire rod is coated with a calcium stearate or a sodium stearate in lubricating process. Thereafter, the wire rod is dried sufficiently in drying process, and then added with a predies lubricant in wire drawing process and coiled by a coiler.
摘要:
A wire rod is payed out from a pay-off stand and 1 descaled in a descaling process. After preheating to a predetermined temperature by a preheating device, it is subjected to a lubrication pretreatment through a zinc calcium phosphate solution applied with ultrasonic wave in the lubrication pretreatment process. After rinsing process, the lubrication-pretreated wire rod is coated with a calcium stearate or a sodium stearate in lubricating process. Thereafter, the wire rod is dried sufficiently in drying process, and then added with a predies lubricant in wire drawing process and coiled by a coiler.
摘要:
The invention relates to a method (31) for shaping a workpiece (2), in which the workpiece (2) is brought into contact with a tool (3) and, lying against the tool (3), is moved at a relative speed (v R ) in relation to the tool (3), wherein the relative speed (v R ) has a constant component (v K ) and a changing component (v S ). In order to reduce fabricating or shaping forces to be applied, it is provided according to the invention that a ratio of the changing component (v S ) to the constant component (v K ) is greater than or equal to 0.7.
摘要:
In order to provide a drawing method for shaping workpieces of metallic materials, the workpiece (3) being drawn through a die aperture (2) narrowing in the drawing direction (4), and thereby reduced in cross section and increased in length, by way of forming under combined tensile and compressive conditions, where high levels of shaping can be achieved in each operation and, if need be, particularly preferred mechanical properties of the workpiece can be produced during the drawing process, it is proposed that the workpiece (3) and/or the drawing die (1) is/are moved during the drawing process in an oscillating manner about an axis (5) running transversely in relation to the drawing direction (4).
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.