Abstract: In a power transmission device in which a hub portion of a ring gear is fixed by a weld portion to a flange portion on an outer periphery of a transmission member, a positioning outer peripheral part of an outer periphery of the flange portion has a radial direction positioning face that positions the hub portion in a radial direction with respect to the flange portion, and an axial direction positioning face that positions in an axial direction, a first annular recess part is provided in the positioning outer peripheral part, the first annular recess part alleviating stress caused by a pushing load via which the positioning projecting part pushes the radial direction positioning face due to the hub portion receiving a tensile force inward in the radial direction accompanying thermal shrinkage of the weld portion between a first outer peripheral part and the hub portion.

Abstract: Presented are metalworking systems for forming metallic workpieces, methods for making such workpieces and methods for operating such systems, and battery cell tabs bent by a multistage plunger press. A metalworking system includes a plunger fixture that mounts adjacent metallic workpieces, and a plunger head movably mounted to the plunger fixture to move between activated and deactivated positions. A first row of plunger fingers is mounted to the plunger head and moves in one direction to press against and bend one metallic workpiece a predefined bend angle. Likewise, a second row of plunger fingers is mounted to the plunger head and moves in an opposite direction to press against and bend another metallic workpiece another predefined bend angle. The plunger head then moves to the activated position, in tandem with the plunger fingers bending the metallic workpieces, to cause the plunger fingers to bend the workpieces additional respective bend angles.

Abstract: An electrical resistance spot welding electrode is disclosed for contact with a narrow or other selected spot weld region in a steel workpiece in a stack-up with an aluminum alloy workpiece for use in a spot welding method in which the weld nugget is carefully formed in the aluminum workpiece at the interface of the stack-up. The welding face of the welding electrode for contact with the steel workpiece is shaped with an aspect ratio greater than one, which fits against the contact surface of the steel workpiece, while the welding face for the aluminum-contacting weld electrode is circular (with an aspect ratio equal to one). The stack-up of workpieces may include a single steel workpiece facing two aluminum workpieces in a sandwich type stack-up or two steel workpieces facing a single aluminum workpiece with the outer steel workpiece having the narrow contact surface for the steel welding electrode.

Abstract: A welded steel door including a pan having a bottom surface forming a first face of the door and flanges extending on opposite edges thereof forming opposite side edges of the door, the flanges having a lid engaging surface spaced from the bottom surface, a lid having a top surface forming a second face of the door opposite the first face, opposite edges of the top surface each having a hem mated with a respective lid engaging surface of each flange, the hem including a portion of the top surface folded back on itself, and a plurality of welds securing the lid to the pan. The welds extend between the portion of the top surface of the lid folded back on itself of each hem and the respective lid engaging surface of each flange and are thereby concealed.

Abstract: A shopping cart in one embodiment comprises a uniframe, a mat basket, and a slim-fit cart frame and basket combination, as well as in multiple embodiments, providing individual structural differences and advantages over pre-existing forms of shopping carts.

Abstract: An apparatus and method for fastening dissimilar metals like steel and aluminum utilizes a spot welding machine. The metals are stacked with an aluminum body captured between steels. Heat from the welder's electric current softens the lower melting point aluminum allowing an indentation of the steel layer to penetrate the aluminum and weld to an opposing steel layer. The process may be used to join stacks with several layers of different materials and for joining different structural shapes.

Abstract: The invention relates to a method for joining two essentially metal sheet-type workpieces. In said method, edge regions of the workpieces to be joined are bent by up to 90° in relation to a plane of the workpiece, the bent edge regions being placed against each other, and the edge regions are then heated to a predefined joining temperature by at least one first frictional element that moves relative to the edge regions, are subjected to a certain contact pressure, and are joined while being deformed.

Abstract: A process is provided for seam welding advanced high strength steel sheets together. Respective end portions of first and second advanced high strength steel sheets are placed in overlapping contact with one another, and subjected to first and second weld passes. In the first weld pass, a seam welder including weld electrodes operate at a first-pass applied current and a first-pass pressure and are moved relative to the overlapping end portions at a first-pass carriage speed to establish a weld seam containing a weld nugget with a martensite phase. In the second weld pass, the weld electrodes operate at a second-pass applied current and a second-pass pressure and move relative to the weld seam at a second-pass carriage speed selected to fuse microcracks, lap openings, and porosity in the seam, relieve the residual stress in the joint, and temper the martensite phase of the weld nugget, and thereby form a weld joint.

Abstract: A guiding and shaping system for producing welded pipes made from metallic strip material. The guiding and shaping system comprises several pairs of rolls that are disposed one behind another in the direction of travel of the workpiece and are used for increasingly cold-working and bending the edges of the workpiece as the workpiece advances. First pairs of rolls grip the top side and bottom side of the workpiece while pairs of rolls that grip the external faces of the bent edges and form the shape of a pipe are provided in the region where the bent edges form undercuts. The guiding and shaping system further comprises a welding device. The workpiece is supported by floatingly mounted lateral rolls until cooling off following the welding process.

Abstract: The present disclosure is directed to methods for joining initially separate members of different metallic materials, e.g., as in joining segments of a multi-segment intravascular guide wire, as well as multi-segment intravascular guide wires so formed. Initially separate members are provided, which members comprise different metallic materials relative to one another (e.g., stainless steel and nitinol). The members are aligned with one another, and a first force is applied to the members while delivering electrical current through the members to solid state weld the separate members to one another. A follow up force that is greater than the first force is applied as solid-state deformation occurs and a weld nugget forms between the members. The weld nugget so formed is thinner and of a larger transverse cross-sectional area than would be produced without application of the follow up force.

Abstract: By respectively abutting first and second outer diameter sections of a second metallic member against first and second inner diameter sections of a first metallic member, and energizing the first metallic member and the second metallic member using a pair of electrodes while pressurizing both metallic members in an axial direction thereof, a first junction where the first inner diameter section and the first outer diameter section are bonded and a second junction where the second inner diameter section and the second outer diameter section are bonded are formed between both metallic members, and a gap in which the metals do not come into contact with each other is formed between both junctions over a predetermined axial length. Accordingly, a high joint strength can be secured using less energy for bonding.

Abstract: Mash seam welding is performed to weld metal plates with thicknesses of 2 mm or more to stabilize the strength of a joint portion, reduce uneven parts of the joint portion, and ensure high strength and reliability of the joint portion. First, two metal plates, clamped with first and second clamping devices, are placed to overlap each other at their end portions. The overlapping portions (L) of the metal plates are pressed together with a pair of upper and lower electrode wheels while welding currents flow to continuously weld the overlapping portions (L) and join the metal plates. The pressing forces applied to the electrode wheels are controlled so that upper and lower welding forces acting upon the overlapping portions are equal to each other during the time when the overlapping portions are continuously welded.

Abstract: A high-strength electric resistance welded steel tube has a composition including, in terms of percent by mass, C: 0.05 to 0.20%, Si: 0.5 to 2.0%, Mn: 1.0 to 3.0%, P: 0.1% or less, S: 0.01% or less, Al: 0.01 to 0.1%, N: 0.005% or less, and the balance being Fe and unavoidable impurities; and a structure which is a dual phase structure including a ferrite phase and a martensite phase, with a volume ratio of the martensite phase being 20 to 60%, wherein a tensile strength TS is 1180 MPa or more, an elongation El in a tube axis direction is 10% or more, and a yield ratio is less than 90%; and after application of a 2% prestrain and baking finishing that includes a heat treatment of 170° C.×10 min, a strength increase (BH value) is 100 MPa or more and a yield ratio is 90% or more.

Abstract: Apparatus for welding continuous strips (1a,1b) wound on a support ring (113), comprising at least means (2) for feeding the strips (1a,1b) to be wound on the support ring (113), an assembly (100) for winding said strips, an assembly (200) for applying radial pressure onto the strips, comprising a first circular jaw (211) and a second circular jaw (212), which are arranged opposite each other and spaced in the longitudinal direction (X-X) by an amount corresponding to the width of the finished seal, and an assembly (300) for welding one (1a) of said strips (1a,1b), said pressing assembly (200) and said welding assembly (300) being coaxial, wherein said welding assembly (300) comprises a first electrode (310) and a second electrode (320) which are arranged inside the jaws (211,212) of the pressing assembly so as to face each other and have a diameter smaller than that of the said jaws (211,212).

Abstract: An electric-resistance-welded pipe welding apparatus includes: an impeder that is disposed in the inner portion of a metal strip which is bent into the cylindrical shape, and is disposed spanning over from the upstream to the downstream of a position in which the induction coil is present when viewed along a traveling direction of the metal strip; and a metallic shield plate that is disposed further upstream than an upstream end of the impeder and is disposed in a position which is further downstream than the rolls when viewed along the traveling direction, the metallic shield plate including a hole portion through which the metal strip bent into the cylindrical shape passes, and the metallic shield plate shielding a magnetic flux generated in the induction coil.

Abstract: In the electric-resistance-welded pipe welding apparatus, after a metal strip that is traveling is bent into a cylindrical shape by rolls so that both ends in a width direction of the metal strip face each other, a power supply portion of an induction heating device or an energization heating device is provided immediately near the metal strip which is bent into the cylindrical shape, a joule heating is performed with respect to the both ends by a power supplied from the power supply portion, thereafter, and the both ends are welded while being pressed to and coming in contact with each other. The electric-resistance-welded pipe welding apparatus includes a ferromagnetic body that is movably inserted between the both ends at a position further to the upstream than the power supply portion when viewed along the traveling direction of the metal strip, the position corresponding to an opening portion between the both ends which face each other.

Abstract: An exemplary method for sealing a vapor chamber includes, firstly, providing a casing, wherein the casing has an opening. Then a metallic tube is inserted into the opening such that the tube is hermetically engaged in the opening. Next, a pressing mold is provided, wherein the pressing mold includes a positive pole and a negative pole opposite to the positive pole. A free end of the tube is pressed by the positive pole and the negative pole of the pressing mold to form a crimped sealing portion. Then electricity is charged between the positive pole and the negative pole. The electricity passes through the crimped sealing portion and heats an inner face of the crimped sealing portion to weld the crimped sealing portion.

Abstract: The invention relates to a contacting module for a transmission controller, comprising: a module housing (3, 5), and a punched grid (4) made of metal, which is accommodated in the module housing (3, 5) and has several conducting tracks (4a) having free ends (4b), wherein contact surfaces (12) for contacting are formed at the free ends (4b). According to the invention, free spaces (10) are formed in the module housing (3, 5), said free spaces extending through the module housing (3, 5) in a vertical direction (v), at least some of the free ends (4b) are arranged at least partially in the free spaces (10), the contact surfaces (12) of at least some of the free ends (4b) extend substantially in the vertical direction (v), and at least some of the free ends (4b) are elastically yielding at least in the area of the contact surfaces (12) thereof.

Abstract: A closure assembly for an inflator comprises a housing and an outlet plate disposed within the housing. The outlet plate has an outlet opening configured to receive a burst disk. The outlet plate is joined to the housing by a deformation resistance weld. The deformation resistance weld is formed by contacting the outlet plate with a first electrode, contacting an exterior portion of the housing with a second electrode, and applying a voltage through the first and second electrodes to adhere a portion of the housing to a portion of the outlet plate.

Abstract: A method and apparatus for retaining an ornament, for example, an ornamental crystal, on a frame or plate is provided. The method includes providing a pin having a first end and a second end, opposite the first end, the second end comprising a projection, for example, a head; inserting the first end of the pin through an aperture in the ornament and through a hole in the frame wherein the projection obstructs the aperture in the ornament; deforming, for example, twisting, the second end of the pin to provide a deformation of the second end that obstructs passage of the second end through the hole in the frame; and retaining the ornament on the frame by the projection of the first end of the pin and the deformation of the second end of the pin. Aspects of the invention facilitate the mounting of ornaments to ornamental fixtures, for example, chandeliers.

Abstract: By respectively abutting first and second outer diameter sections of a second metallic member against first and second inner diameter sections of a first metallic member, and energizing the first metallic member and the second metallic member using a pair of electrodes while pressurizing both metallic members in an axial direction thereof, a first junction where the first inner diameter section and the first outer diameter section are bonded and a second junction where the second inner diameter section and the second outer diameter section are bonded are formed between both metallic members, and a gap in which the metals do not come into contact with each other is formed between both junctions over a predetermined axial length. Accordingly, a high joint strength can be secured using less energy for bonding.

Abstract: A liquid phase diffusion bonding method for a metal machine part superior in the quality of the joint and the productivity enabling the bonding time to be shortened, achieving homogenization of the bonding structure and improving the tensile strength, fatigue strength, and joint quality and reliability. This liquid phase diffusion bonding method of a metal machine part is characterized interposing an amorphous alloy foil for liquid phase diffusion bonding at bevel faces of metal materials, performing primary bonding by melt bonding said amorphous alloy foil and said metal material by resistance welding to form a joint, then performing secondary bonding by liquid phase diffusion bonding by reheating said joint to at least the melting point of said amorphous alloy foil, then holding it there to complete the solidification process of said joint.

Abstract: A guiding and shaping system for producing welded pipes made from metallic strip material. The guiding and shaping system comprises several pairs of rolls that are disposed one behind another in the direction of travel of the workpiece and are used for increasingly cold-working and bending the edges of the workpiece as the workpiece advances. First pairs of rolls grip the top side and bottom side of the workpiece while pairs of rolls that grip the external faces of the bent edges and form the shape of a pipe are provided in the region where the bent edges form undercuts. The guiding and shaping system further comprises a welding device. The workpiece is supported by floatingly mounted lateral rolls until cooling off following the welding process.

Abstract: Thus a lifter table de-stacker 1 is provided comprising a lifter table 3 with a stack 10 holding device 4 above the lifter table. The holding unit positions the stack by motorized guiding elements 14 and 15. A de-stacking unit and in particular a suction unit is provided which can be adjusted in its position above the stack 10 by a motor as well. The lifter table de-stacker with the motorized adjustability of the guiding elements and the de-stacker provides for a very fast adaptation to different sheet metal blank sizes. Such a lifter table de-stacker is preferably provided for feeding sheet metal blanks into a rounding apparatus which is feeding rounded blank container bodies into a resistance seam welding machine for container bodies.

Abstract: A method to manufacture tubing includes co-forming a base material strip and a liner material strip into a string of internally-lined tubing and joining edges of the base material strip to form a seam therebetween.

Abstract: A method of edge welding a plurality of workpieces particularly useful for minimizing edge deformation and reducing the electrode size, flange size, welding force and current load necessary to produce a given weld, including the steps of forming at least one distending projection along the edge of a first workpiece, securing the projection against a second workpiece and applying a force and current load to the projection so as to fuse a portion of the projection, and a system for performing the method, including a dedicated projection forming fixture, a resistance welding apparatus preferably having specialized electrodes and a controller communicatively coupled to the fixture and apparatus.

Abstract: Welding apparatus includes a first electrode having an electrode surface adapted to contact an outward end fold of a heat-exchanger tube which is positioned in an orifice of a tubesheet with the fold contacting an outward-facing side of the tubesheet. A second electrode has an electrode surface adapted to contact the outward-facing side of the tubesheet. Another welding apparatus includes a first electrode having an electrode surface adapted to contact an end of a heat exchanger tube positioned in an orifice of a tubesheet. The first electrode is movable to create an outward end fold in the tube and deform the fold against the outward-facing side of the tubesheet. Another welding apparatus includes a second electrode having an electrode surface adapted to contact the outward-facing side of a tubesheet and having cutouts which surround each of a plurality of heat-exchanger tubes and which are adapted to receive a first electrode.

Abstract: A method for providing an electric connection between a wire (12) and a metal surface (10) by pressing a curved and stripped section (11) of the wire towards the metal surface and arranging a brazing pin (14) in close proximity to a concave side of the curved section. Electric power is supplied to the brazing pin in a pinbrazing process until a fluxing agent and a solder material carried by the brazing pin has been released and melted. A brazing gun (18) is electrically connected to a power supply (19), the brazing gun having an opening for holding a brazing pin, and the brazing pin having a circular cross section. A bending tool is used for bending a stripped section of an electric wire to a circular shape, wherein the diameter of the bent wire is adapted to the diameter of the brazing pin, and means are provide for pressing the bent wire against the metal surface while generating an arc between the brazing pin and the metal surface.

Abstract: Welded structures having a first and a second member formed from sheet metal, tubes, and similar shapes, are economically fabricated through use of a method for joining a second member to a first member having a folded rim extending therefrom. The folded rim defines an air gap within the folded rim. The first and second members are joined together by forcing the folded rim against the second member under sufficient pressure to flatten the folded rim to a point that there remains substantially no air gap inside the folded rim, and resistance welding together the first and second members. The second member and the rim respectively define faying surfaces thereof. The air gap inside the folded rim extends generally parallel to the faying surfaces. The faying surfaces of the rim and second member are forced against one another by applying pressure through the folded rim in a direction generally perpendicular to the faying surfaces.

Abstract: One method for welding includes obtaining a heat-exchanger tube having an outward fold. The tube is inserted at least partially through the orifice of a tubesheet with the fold contacting one of the outward and inward facing sides of the tubesheet. A first electrode is positioned in contact with the outward fold and a second electrode in contact with the one side of the tubesheet. Another method for welding includes obtaining a heat-exchanger tube having a tube end. The tube is inserted at least partially through the orifice of a tubesheet. A first electrode is positioned in contact with the first tube end and a second electrode is positioned in contact with one of the outward and inward facing sides of the tubesheet. The first electrode is moved against the first tube end to create an outward fold with the outward fold contacting the one side of the tubesheet.

Abstract: A preliminary assembly system for joining a body side panel and a floor panel of an automotive vehicle in a loose-fit hemming joint state by bending a claw piece extending from a main body of one of the panels to hold the other of the panels, prior to welding. The preliminary assembly system comprises a die to be in contact with a back-side surface of the main body of one of the panels in a region forming a loose-fit hemming joint section. Additionally, a main bending blade is provided to be movable to approach the die to bend the claw piece until the loose-fit hemming joint state is established. The main bending blade is moved to approach the die by a movement amount which is mechanically determined relative to a surface of the other of the panels during formation of the loose-fit hemming joint section.

Abstract: A method for metallurgically attaching a tube to a member. A member having a wall is obtained. The wall includes opposing first and second sides and includes a partial extrusion extending above the first side. The partial extrusion has a through hole. A tube having an end portion is obtained. The tube and the member are positioned with the end portion contacting the second side of the wall proximate the partial extrusion. A resistance welding current path is created through the tube and the member proximate the end portion and the partial extrusion, and the end portion is relatively moved into and deformingly against the partial extrusion creating a weld zone which includes at least some of the end portion and at least some of the partial extrusion.

Abstract: A method for resistance welding a tube to a member. A tube is obtained having an axially-extending first portion and having a tube form which extends transversely from the first portion. The tube form has at least one axial projection. The tube and the member are positioned with the at-least-one axial projection in contact with the member. A resistance welding current path is created through the member and the tube including the at-least-one axial projection creating a weld zone which includes at least some of the at-least-one axial projection and at least some of the member.

Abstract: An improved apparatus and method for the prevention of deformation and buckling of metal plates during welding processes is disclosed. The improved apparatus and method are used to apply pressure to a welded seam created between two metal plates during the welding process. Pressure is applied to the area of the plates surrounding the welded seam until the welded seam has sufficiently cooled to prevent deformation and buckling of the metal plates.

Abstract: A method for metallurgically attaching together two tubes. A first tube is obtained having a far wall portion with a first through hole and a near wall portion with a second through hole. A second tube is obtained including first and second outward folds. The tubes are positioned with the first fold passed through the second through hole and contacting the far wall portion surrounding the first through hole and with the second fold located outside the near wall portion. A first resistance welding current path is created proximate the first fold and the far wall portion and the first fold is relatively moved deformingly against the far wall portion creating a first weld zone. A second resistance welding current path is created proximate the second fold and the near wall portion and the second fold is relatively moved deformingly against the near wall portion creating a second weld zone.

Abstract: A method for manufacturing a tubular assembly. A first tube is obtained. A first tubular connector is obtained having a first and second end portions. The first end portion is metallurgically attached to the first tube. A tubular member is obtained having a third end portion. At least one of the second and third end portions includes an annular outward fold including spaced-apart first and second fold portions. The first tubular connector and the tubular member are positioned with the second end portion aligned with and contacting the third end portion. A resistance welding current path is created through the first tubular connector and the tubular member proximate the second and third end portions and the second and third end portions are relatively and deformingly moved together creating a weld zone which includes at least some of the second and third end portions.

Abstract: A method for metallurgically capping an end of a tube. A tube is obtained having a tube end portion and having a passageway which extends to the tube end portion A cap is obtained and positioned on the tube end portion covering the passageway. The tube end portion of the tube is folded around the cap creating an end portion fold while leaving a space within the fold. A resistance welding current path is created through the tube and the cap proximate the fold and the fold is moved deformingly against the cap creating a weld zone which includes at least some of the fold and at least some of the cap.

Abstract: In a fuel tank for a motor vehicle having shells tightly connected together, positioning aids are arranged in proximity to a weld. The positioning aids permit an accurately fitting assembly of the shells prior to welding. This makes the fuel tank particularly inexpensive to manufacture.

Abstract: A method for electrical resistance welding thin metal sheets together is disclosed. In the method, a protrusion is formed upon a first sheet wherein the protrusion includes a planar circular surface and an annular sloping wall. Thereafter, electrodes pass an electrical current through the protrusion as the protrusion is contacted with a second metal sheet for electric resistance welding the first sheet to the second sheet.