Abstract:
The invention relates to a coating method for coating at least one surface of a workpiece (1) by means of a coating element (2), from which material is transferred to the surface of the workpiece (1), wherein in a first method step at least the area of the surface of the workpiece (1) to be coated is heated, and in a further method step the area of the surface of a workpiece (1) to be coated is brought into contact with the coating element (2), wherein a relative motion between the surface of the workpiece (1) and the coating element (2) is applied.
Abstract:
The supporting and working apparatus (19) for supporting and working axially developing workpieces (P) for a working plant (10) comprises a frame (20) for rotatably carrying an annular element (21) provided with at least one working device (22) movable in a controlled mode; the supporting and working apparatus (19) further comprises at least a first and a second supporting and sliding members (23, 24) for the workpiece (P), angularly spaced apart on the support frame (20), each of said supporting and sliding members (23, 24) being movable orthogonally to the axis of the apparatus (19) in a controlled mode, and detecting means (51) on the support frame (20) for detecting the position and the deformation of the workpiece (P) with respect to a longitudinal reference axis (AR). The working device (22) and/or the members (23, 24) for supporting the workpiece (P) are selectively movable at each cross section to be worked of the workpiece (P), for positioning the working device (22) and the workpiece (P) in relation to each other, orthogonally to the longitudinal reference axis (AR), in a plane orthogonal to an operative axis (AL) of the working device (22), as a function of working parameters stored in a control unit and/or as a function of reference signals generated by the detecting means (51) at each cross section of the workpiece (P).
Abstract:
Die Erfindung bezieht sich auf ein Verfahren zum Herstellen einer Schweißverbindung an kaltzähen Ni-legierten Stählen mit Schweißzusatzwerkstoffen, wobei ein Schweißgut mittels Schweißens eingebracht wird. Verbesserte Eigenschaften bei derartigen Grundwerkstoffen im Bereich der Schweißverbindung werden dadurch erhalten, dass sich der Schweißzusatz hinsichtlich des Chromäquivalents um höchstens ± 1 % und hinsichtlich des Nickeläquivalents um höchstens ± 2 % unterscheidet, wobei das Schweißgut weiterhin durch die Grenzwerte 0 % ≤ Chromäquivalent ≤ 3 % und 2,5 % ≤ Nickel-Äquivalent ≤ 17,5 % eingeschränkt wird (Fig.).
Abstract:
The present invention relates to a method for welding a semi-finished elongated module (1) of sheet metal sections (2) showing a closed or partly closed profile and arranged to be used in a wind power structure and a handling arrangement to be used in such producing activities. The method comprises to lift the semi-finished module (1) to facilitate a pivotal movement thereof, position the semi-finished module (1) for welding by pivoting it about a rotational axis arranged extending in a general direction of said elongated module (1) and inside its profile, and to performing the welding operation. The handling arrangement comprises a first supporting device arranged (4) to carry the elongated module (1) at a first short side, a second supporting device (4) arranged to carry the elongated module (1) at an opposite short side, and means (13,14) for controllably pivoting the module about a rotational axis extending between said first and second supporting device (4) and inside the module's (1) profile.
Abstract:
In one embodiment, the present invention relates to a method and system of determining the weld bead sequence on a mechanical component is disclosed. In one specific embodiment, the sequence is determined by numerical analysis of a plurality of weld bead sequences to determine the weld bead sequence. Then, after this sequence is determined, a weld overlay is placed onto the mechanical component using the sequence. In particular embodiments, a weld bead sequence is applied to a boiler tube panel wherein the sequence begins at the crown of the tube, progresses down the walls of the tube to the tube and membrane interface, and concludes on the membrane. The new bead sequence reduces residual and distortional stresses as created by applying a weld overlay.
Abstract:
A method is provided for forming a metallurgical bond. A first metal workpiece (10) and one or more second metal workpieces (15) are brought into proximity to one another such that a first portion (12) of the first workpiece (10) is in general overlying relationship with a second portion (17) of the one or more second workpieces (15). A suitable material (99) is provided between said first portion (12) and said second portion (17), said material (99) being in the form of particles or foil. At least a first part of said first workpiece (10) comprising said first portion (12) is forced toward said a part of the one or more second workpiece (15) comprising said second portion (17) by means of any one of a suitable high pressure joining process (95) and a high speed joining process, such as to cause the said first metal workpiece (10) and said one or more second metal workpieces (15) to become joined or welded to one another to form a metallurgical bond therebetween
Abstract:
The present invention relates to a method of welding a wear layer onto a parent material (8), wherein a welding current is applied in each case to a first wire electrode (5) and at least one second wire electrode (5a), which are continuously fed to the parent material (8) for producing a common weld pool, wherein metal powder (7) is fed to the weld pool, wherein welding powder (6) is fed to the weld pool, wherein the wire electrodes are flux-cored wire electrodes (5, 5a), having a core (10) and a covered electrode (11), wherein the flux-cored wire electrode (5, 5a) has a higher alloy than the weld deposit analysis of the wear layer (9) to be welded on, wherein the covered electrode (11) of the flux-cored wire electrode (5, 5a) consists of an alloy which has magnetization properties suitable for the adhesion of the metal powder (7).