A process for manufacturing a muffler for an exhaust system of an internal combustion engine, provides a manufactured muffler with a muffler housing with a housing jacket (14) that is elongated in a direction of a housing longitudinal axis and with at least one housing bottom (26) carried on the housing jacket (14). The process includes the steps of providing the housing jacket (14) with a stop formation (50) in association with at least one housing bottom (26) to be carried on the housing jacket (14), providing the at least one housing bottom (26) to be carried on the housing jacket (14), and positioning the at least one housing bottom (26) on the housing jacket (14) such that the housing bottom (26) is in contact with the stop formation (50) associated with the housing bottom (26).

A connecting seam is formed between two thin-walled sheet-metal parts as a laser weld seam or laser soldered seam as additional material is supplied, respectively. The sheet-metal parts have flange portions for formation of a connecting region. At least one flange portion includes in the region of a joining zone a bead which is at least partially surrounded or filled by solidified melt from seam material after the production of the connecting seam.

The disclosed apparatus, systems and methods relate to the design principles for forming a welded joint between two sections of tubing or pipe. The material at the end portion of a first section of tubing to is folded inwardly to create a support surface. This support surface improves the ability to weld light gage material with traditional arc welding and it creates conditions to allow brazing to be as strong as traditional arc welding by using A shaped piece of filler material which is located at the intersection between the support surface of the first section of tubing and a side wall section of the second section of tubing. While holding together the first and second sections of tubing with the filler material, heat is applied at the intersection at a temperature and for a duration sufficient to melt the filler material and form the 3t joint.

A different material joining method sandwiches, with electrodes, a first joining member and a second joining member lower in melting point than the first member, applies pressure and electricity to them, and joins them in preset joint parts. The method includes forming a discontinuous abutting part beforehand in the joint part of at least one of the two members. The two members abut onto the abutting part in a discontinuous state. The method includes melting the second member by sandwiching the joint parts with the electrodes and applying pressure and electricity on the joint parts in a state where the two members abut onto each other in the joint parts while the abutting part is included. The method includes welding both the members by bringing a melting material of the second member into interface joining with a surface of the first member toward the second member.

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.

A metal member includes a first plate, and a second plate abutting against and welded to the first plate in at least one butt portion. In the butt portion, a length from a first end to a second end of a welding boundary line between the first plate and the second plate is longer than a length of a straight line connecting the first end to the second end of the welding boundary line.

Provided is a method of welding laminated metal foils that can prevent blowholes and spatter from being formed. It is a method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates. The method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates includes locally pressing and crimping the laminated metal foils sandwiched between the pair of metal plates at a welding point in a laminating direction, and welding the crimped pair of metal plates and laminated metal foils at the welding point.

The disclosed apparatus, systems and methods relate to the design principles for forming a welded joint between two sections of tubing or pipe. The material at the end portion of a first section of tubing to is folded inwardly to create a support surface. This support surface improves the ability to weld light gage material with traditional arc welding and it creates conditions to allow brazing to be as strong as traditional arc welding by using A shaped piece of filler material which is located at the intersection between the support surface of the first section of tubing and a side wall section of the second section of tubing. While holding together the first and second sections of tubing with the filler material, heat is applied at the intersection at a temperature and for a duration sufficient to melt the filler material and form the 3t joint.

In a preferred embodiment, there is provided a process for forming a reinforced rocker panel assembly, and which includes positioning a reinforcement patch having first and second patch sections in surface-to-surface contact with a blank panel sheet, and welding the first patch section to the blank panel sheet. The process further includes bending both the blank panel sheet and the reinforcement patch along a bend line interposed between the first and second patch sections to form the blank panel sheet into a rocker panel portion having an elongated base section and a longitudinal flange, where the first and second patch sections are in at least partial abutting contact with the base section and the flange. The process also includes welding the second patch section to the flange.

A bodywork or chassis component for a vehicle includes a first sheet having a first connection flange and a second sheet having a second connection flange, the first and second sheets being joined in correspondence of the respective first and second connection flanges. The first connection flange is a flange folded back towards the first sheet so as to define a valley with the first sheet. The second connection flange is overlapped to said first connection flange for an overlap length and it is at least in part joined to said first connection flange by a welding at that joins a perimeter edge of the second connection flange to a side of the first connection flange external with respect to said valley. The first and second connection flanges are parallel to one another in correspondence of the overlap length. The invention further includes a method for manufacturing of the aforementioned component.