Abstract:
The invention relates to a method for consolidating and sealing a tube. According to the method, the tube (24) is positioned between a sonotrode (10) and an anvil (22) of an ultrasonic welding device that is associated with the latter, the sonotrode is activated and is displaced in relation to the counter-electrode for consolidating and sealing a tube. The aim of the invention is to automate the consolidation and sealing of a tube without individually entering the data of the tube into an ultrasonic welding device in advance. To achieve this, the tube is positioned and fixed between the sonotrode and the anvil, at least one characteristic variable of the tube is determined when said tube is fixed between the sonotrode and the anvil, stored welding parameters are retrieved based on the characteristic variable(s), the sonotrode is activated and the sonotrode is displaced in relation to the anvil in order to consolidate and seal the tube.
Abstract:
A heat transfer tube having surface enhancements so as to improve the thermal performance and increase the heat transfer capacity. The heat transfer tube has an inner surface having a layer of sintered, soldered or brazed metal powder thereon.
Abstract:
A method of manufacturing an electric resistance welding pipe is provided, in which a lateral edge shape is made to be an appropriate shape immediately before electric resistance welding is performed, thereby penetrators are securely removed during the electric resistance welding, consequently an electric resistance welding pipe having excellent characterization of welded seam can be obtained. A fin shape in finpass forming is printed to lateral edges of a strip, thereby the lateral edges of the strip are shaped with predetermined tapering.
Abstract:
Die Erfindung betrifft eine Widerstands-Schweißverbindung zwischen zwei dünnwandigen Rohrabschnitten (1,2) unterschiedlicher Wandstärke, bei der ein erster Rohrabschnitt (2) stirnseitig an die Mantelfläche eines zweiten Rohrabschnitts (1) angeschweißt ist. Der Rohrabschnitt mit dickerer Wandstärke (2) weist eine Stufenbohrung (4) und einen konusförmigen Endabschnitt (3) auf, wobei Konus (3) und Stufenbohrung (4) so zusammenwirken, dass die Wandstärke im Bereich des Konus ein Minimum aufweist. Durch diese Engstelle kann die Schweißwärme nicht zu stark in die dickere Wand abfließen. Die Schweißverbindung wird dadurch sicherer.
Abstract:
A method for metallurgically attaching a tube (32) to a member (18). A member (18) having a wall (20) is obtained. The wall (20) includes opposing first and second sides (22, 24) and includes a partial extrusion (26) extending above the first side (22). The partial extrusion (26) has a through hole (28). A tube (32) having an end portion (34) is obtained. The tube (32) and the member (18) are positioned with the end portion (34) contacting the second side (24) of the wall (20) proximate the partial extrusion (26). A resistance welding current path is created through the tube (32) and the member (18) proximate the end portion (34) and the partial extrusion (26), and the end portion (34) is relatively moved into and deformingly against the partial extrusion (26) creating a weld zone (36) which includes at least some of the end portion (34) at least some of the partial extrusion (26).
Abstract:
A method of producing, by a UOE method, a high-strength line pipe-use steel pipe having a steel-sheet strength exceeding 850 N/mm2, the method producing a high-strength line pipe-use steel pipe having excellent formability and burst characteristics that prevent cracks or fractures in a seam-welded portion during a pipe expanding process and eliminate brittle-fracture originating at the seam-welded portion even under an inner-pressure load while the steel pipe is used. A method of producing, by a UOE method, a high-strength steel pipe having a tensile strength exceeding 850 N/mm2, wherein the high-strength steel pipe has excellent formability and burst characteristics such that a ratio (R/r) of an average radius of curvature within a peripheral-direction 120- mm range including the welded portion of the steel pipe before pipe expanding during a pipe expanding process to a steel-pipe radius (r) after pipe expanding is 0.65-2.0 or alternatively a ratio (R/r) to a steel-pipe radius (r) is 0.90-2.0, and the steel pipe has excellent burst characteristics such that Vickers hardness Hv of a base metal, minimum Vickers hardness Hz at the HAZ portion, pipe body wall-thickness t, and welded portion peaking amount d of the steel pipe before pipe expanding during a pipe expanding process satisfy the following relation, (1 + 0.005 t | δ
Abstract translation:通过UOE法制造钢板强度超过850N / mm 2的高强度管线管用钢管的方法,制造成形性和爆裂性优良的高强度管线用钢管的方法 在扩管工序中防止缝焊部分的裂纹或断裂,并且在使用钢管的同时即使在内压负荷下也能够消除由缝焊部分引起的脆断。 一种通过UOE法制造拉伸强度超过850N / mm 2的高强度钢管的方法,其中,所述高强度钢管具有优异的成形性和破裂特性,以使得所述高强度钢管的比率(R / r) 包括扩管前扩管前的钢管的焊接部分与扩管后的钢管半径(r)的周向120mm范围内的平均曲率半径为0.65〜2.0,或者, R / r)与钢管半径(r)的关系为0.90〜2.0,具有母材的维氏硬度Hv,HAZ部的最小维氏硬度Hz,管体壁厚 t和扩管前扩管前的钢管的焊接部分峰化量d满足下列关系式:(1 + 0.005t≈δ
Abstract:
To provide parts equipped with a bracket which may be hard to cause brazing failure when the bracket is brazed to the body of the part and also may be free of trapping of a plating solution in the case of the metal plating thereof. The parts including a bracket (2) having a bead (3) formed thereon, and the bracket being joined to the part so that the end portion (3a) of the bead (3) faces the body (1) of the part, characterized in that a hole (6) is provided through the end portion (3a) of the bead (3), and a hollow portion (7) formed by the blanket (2) and the body (1) of the part is opened to the exterior thereof through said hole (6).
Abstract:
The present invention provides a high strength welded steel pipe superior in weld zone embrittlement crack characteristics and a method of production of the same, that is, a method of production of a welded steel pipe superior in hydrogen embrittlement cracking resistance of weld metal characterized by seam welding from the inner and outer surfaces by a tensile strength of 850 MPa or more, then expanding or reducing the size of the pipe for correction, which method of production of welded steel pipe characterized in that the hydrogen concentration of the preceding weld metal is 0.2 cc or less per 100 g at ordinary temperature.
Abstract:
An apparatus and method for producing an exhaust processor (12) comprising: a clamping device (10, 10A) for applying a predetermined clamping pressure to clamp a case (22) or other component of the exhaust processor (12) about a substrate (28) or other component of the exhaust processor (12) to define a gap between the case (10, 10A) and substrate (28); a measuring device (212, 212A) for measuring a size of the gap during application of the predetermined clamping pressure, the measuring device (212, 212A) including a clamping pressure control system (214, 214A) for adjusting the predetermined clamping pressure of the clamping device (10, 10A) in response to the gap measurement so that the gap size is within a predetermined range; and a welder (90, 90A) for welding a portion of the case (22) to an other portion of the case (22) when the gap size is within the predetermined range. The measuring device (212, 212A) also includes a camera (334) for measuring the gap size. The measuring device (212, 212A) measures the size of the gap by taking gap measurements at a plurality of predetermined locations about the substrate (28) and averages these measurements.