A welding component is provided for welding to a component via at least one welding region. The welding component includes: at least one welding indicator arrangement provided on the welding component; and, the at least one welding indicator arrangement includes a welding region minimum indicator to be covered by the at least one welding region and a welding region maximum indicator not to be covered by the at least one welding region.

Methods and systems of using a laser beam to weld an object with a non-flat surface, including curved surfaces, are described, where at least one piece of the object is transparent. An optical guide with a flat surface and an interface surface is placed on a piece of an object to welded. The interface surface is fabricated to form-fit the non-flat surface of the object to be welded, and is opposite the flat surface. A liquid optical medium is applied between the non-flat surface and the interface surface, filling any gaps or surface defects. The laser beam is then transmitted through the optical guide, liquid optical medium, and into the object to be welded, to a location to be welded. The laser beam then welds the object to be welded at pre-determined points.

A joint body includes first and second metal members and a joint portion including a welded portion where the first and second metal members are joined together, the welded portion having a line shape. The joint portion includes first and second longitudinal portions and a plurality of connecting portions. The first longitudinal portion has first intersecting portions arranged in a first direction and extends in the first direction. The second longitudinal portion has second intersecting portions arranged in the first direction and extends in the first direction. The welded portion intersects itself at the first and second intersecting portions. The connecting portions are arranged in the first direction. The connecting portions extend in a first direction and connect the first and second longitudinal portions.

A joint body includes first and second metal members and a joint portion including a welded portion where the first and second metal members are joined together, the welded portion having a line shape. The joint portion includes first and second longitudinal portions and a plurality of connecting portions. The first longitudinal portion has first intersecting portions arranged in a first direction and extends in the first direction. The second longitudinal portion has second intersecting portions arranged in the first direction and extends in the first direction. The welded portion intersects itself at the first and second intersecting portions. The connecting portions are arranged in the first direction. The connecting portions extend in a first direction and connect the first and second longitudinal portions.

A welding structure includes: a first metal member and a second metal member that are superimposed and welded together. The first metal member has a hole. The second metal member includes a nugget portion where a part of the second metal member has been melted by heat of laser light and has re-solidified. A peripheral portion of the hole in the first metal member covers the nugget portion. A part of the nugget portion is exposed through the hole.

A method of welding a support on a slide profile, which comprises: a) providing a support having a wall with an inner face, and providing a profile having a wall with an outer face, b) positioning the interface support with the inner face of its wall against the outer face of the wall of the profile, c) creating a welding joint between the wall of the support and the wall of the profile by moving a laser beam relative to the wall of the profile, while keeping the laser beam in a position such that it successively passes through, from an emitting source: the wall of the profile, then the wall of the support, while remaining within the material of the wall of the support.

A method for producing a component by brazing and a related component are disclosed. The component may include a first part, a second part and a third part, wherein the first part includes a first junction part, the second part includes a second junction part and a cross junction part, and the third part includes a third junction part, and wherein the third junction part has a part and a remaining part. In an embodiment the method includes coupling the first part and the second part to each other by performing a preceding weld in a state of overlapping a part of the first junction part and the second junction part and, after performing the preceding weld, coupling the first part, the second part, and the third part to each other by performing a following weld.

A method for producing a component by brazing and a related component are disclosed. The component may include a first part, a second part and a third part, wherein the first part includes a first junction part, the second part includes a second junction part and a cross junction part, and the third part includes a third junction part, and wherein the third junction part has a part and a remaining part. In an embodiment the method includes coupling the first part and the second part to each other by performing a preceding weld in a state of overlapping a part of the first junction part and the second junction part and, after performing the preceding weld, coupling the first part, the second part, and the third part to each other by performing a following weld.

Laser welding methods include focusing laser radiation onto a first metal sheet disposed on a metal part, optionally with one or more intervening metal sheets therebetween. The laser radiation is steered to trace at least one spiral path to spot-weld together the metal parts. The laser radiation includes a center beam and an annular beam to maintain a stable keyhole. One method is tailored to weld aluminum parts, e.g., with high gas content and/or dissimilar compositions, and the laser radiation traces first an outward spiral path and then an inward spiral path. The center beam is pulsed during one segment of the inward spiral path. Another method is tailored to weld steel or copper parts having a coating at an interface therebetween, and the laser radiation traces an inward spiral path. The interface may be a zero-gap interface, or a non-zero gap may exist.

A process for room temperature substrate bonding employs a first substrate substantially transparent to a laser wavelength is selected. A second substrate for mating at an interface with the first substrate is then selected. A transmissivity change at the interface is created and the first and second substrates are mated at the interface. The first substrate is then irradiated with a laser of the transparency wavelength substantially focused at the interface and a localized high temperature at the interface from energy supplied by the laser is created. The first and second substrates immediately adjacent the interface are softened with diffusion across the interface to fuse the substrates.