A method and system for joining relatively thick (i.e., at least 0.07 inch, or between 0.08 and 0.24 inch) sheets of non-weldable aluminum or other material using multiple passes of ultrasonic joining and multiple plugs to create a single larger sheet. Angles and profiles are machined onto edges of the sheets, the angles are overlapped to form a scarf joint, and ultrasonic joining is performed on both sides of the scarf joint, resulting in channels where the angles and profiles intersect. Plugs are extruded or otherwise created and positioned in the channels, and ultrasonic joining is used to join the plugs in the channels. Additional plugs are added until the last plugs are proud of the surface, and then the plugs are machined until the joint is flush with the surface. The plugs may be of the same or a different material as the sheets.

A welding tape for thermally connecting metal workpieces by fusion, wherein the welding tape in a cross section has an outwardly closing cover layer which comprises an inner cover layer and an outer cover layer, wherein in the transverse direction provision is made at least in side edge regions of the inner cover layer for adhesive layers by means of which the welding tape can be fastened to the workpieces to be connected, wherein in the interior of the cover layer provision is made for a self-combusting exothermic substance, which during ignition provides the thermal energy which is required for the welding, wherein a non-combustible heat shield is arranged exclusively between the exothermic substance and the outer cover layer, and wherein a welding additive is provided between the exothermic substance and the inner cover layer.

A method comprises: providing a weldment and a welded plate to which the weldment is to be welded, an end of the weldment to be welded to the welded plate being provided with a first welding face and a second welding face, the first welding face and the second welding face forming a pointed cone, the first welding face corresponding to a first welding area, and the second welding face corresponding to a second welding area; in the first welding area, welding being performed at the innermost side of the pointed cone to form a first welding pass; in the second welding area, welding being performed at the innermost side of the pointed cone to form a second welding pass, and then welding being performed at the outer side of the second welding pass to form a third welding pass adjacent to the second welding pass.

A sensor device includes a body case provided with an opening, and a body cover assembled to the body case to cover the opening. The body cover has at an outer peripheral portion thereof an overlapping region overlapping a portion of the body case located at a peripheral edge of the opening. The body cover is fixed to the body case by providing a welded portion surrounding the opening using laser-welding at a portion distant from an end surface of the body cover in a boundary of the overlapping region of the body cover and a portion of the body case overlapping the overlapping region.

The present invention provides a lap fillet arc welding joint including a first metal sheet, a second metal sheet, and a weld bead. A region of the first metal sheet on one end side is bent. In a cross-sectional view in a cross section perpendicular to a weld line of the weld bead, in a first direction, a position of a tip end of the bent region of the first metal sheet overlaps a region of the second metal sheet on one end side. In a second direction, an amount of deviation between a central axis of a region connected to the bent region of the first metal sheet and a central axis of the region of the second metal sheet on one end side is times or less of the average value of sheet thicknesses of the first metal sheet and the second metal sheet. A joint portion length, which is a length from a root portion of the second metal sheet to a weld toe portion of the first metal sheet, is two times or more of the sheet thickness of the second metal sheet. The position of the weld toe portion of the first metal sheet in the second direction is in a range from a first position to a second position.

Features herein relate to an electric arc welding method for creating a multi-pass welded joint comprising the following steps: a first stand-alone toe weld on a first construction element, then, arranging the first construction element and a second construction element in a joining position, with a distance being present between the first stand-alone toe weld and a root area of the welded joint to be created, while maintaining the joining position, making a first weld connection between the first construction element and the second construction element by applying a root pass at the root area, then, applying one or more filling beads, wherein the first stand-alone toe weld, the root pass and the one or more filling beads together form part of the welded joint, wherein the first stand-alone toe weld forms the toe of said welded joint at the side of the first construction element.

A positioning structure of a frame welding assembly for a metal product, the metal product is a holding plate or a holding basket made of metal mesh and contains: multiple bodies, each of the multiple bodies is folded in a square shape and includes multiple raised faces and multiple slots which are stamped on a peripheral side of each body respectively. Two adjacent of the multiple bodies are connected together, and the two adjacent bodies have multiple recesses and multiple protrusions respectively formed on two connection sides thereof so that the multiple recesses retain with the multiple protrusions individually before welding the two adjacent bodies together.

A method for producing a welded joint between a steel sheet and an aluminum sheet, wherein the steel sheet and the aluminum sheet are clamped horizontally and are welded together on only one side in the welding position, a corresponding welded joint and a component comprising a corresponding welded joint.

A method and system for joining relatively thick (i.e., at least 0.07 inch, or between 0.08 and 0.24 inch) sheets of non-weldable aluminum or other material using multiple passes of ultrasonic joining and multiple plugs to create a single larger sheet. Angles and profiles are machined onto edges of the sheets, the angles are overlapped to form a scarf joint, and ultrasonic joining is performed on both sides of the scarf joint, resulting in channels where the angles and profiles intersect. Plugs are extruded or otherwise created and positioned in the channels, and ultrasonic joining is used to join the plugs in the channels. Additional plugs are added until the last plugs are proud of the surface, and then the plugs are machined until the joint is flush with the surface. The plugs may be of the same or a different material as the sheets.

A member joining method is for joining a first member with a second member by welding. The method includes performing welding of the first member and the second member from a side of high-temperature use environmental surfaces of the first member and the second member under a condition in which the first member abuts on the second member through hooked portions, each hooked portion being provided on an abutment surface, on which the first member and the second member under abutting, of each of the first member and the second member.