Methods and systems for forming vacuum insulated containers, such as beverage and food containers, are described. The methods and systems include using a laser to close openings in walls of the container while the container is held at vacuum conditions. The closing of the opening forms the vacuum space within the walls of the container.

Angled, single laser weld and a method of forming an angled, single laser weld including arranging a first and second faying surfaces of a first and second component adjacently to form an interface between the components; irradiating at least one of the first and second components at the interface with a laser, wherein the first faying surface defines a plane formed at an angle alpha in the range of +1-5 degrees to 60 degrees from an axis A perpendicular to the first front surface and the second faying surface matches the first faying surface; and forming a junction at the interface with an hourglass shaped weld.

Provided is an apparatus for coating a girth weld and a cutback region surrounding said girth weld, said apparatus having lateral travel at least equal to the length of the cutback region and circumferential rotational travel around the pipe. The apparatus can provide a multiple component coating accurately and safely, without the need for solvent flushing of the apparatus.

An optical unit includes: a first optical device holding body that is sleeve-shaped and includes a first holding portion configured to hold therein at least one first optical device, and a first fitting portion extending from the first holding portion; a second optical device holding body that is sleeve-shaped and includes a second holding portion configured to hold therein at least one second optical device, and a second fitting portion extending from the second holding portion; and a welded portion that is melted and solidified over the first fitting portion and the second fitting portion in an overlapping portion between the first fitting portion and the second fitting portion. A first welding width at a center of the first fitting portion and a second welding width at a center of the second fitting portion are substantially identical in the optical axis direction of the optical unit.

An optical unit includes: a first optical device holding body that is sleeve-shaped and includes a first holding portion configured to hold therein at least one first optical device, and a first fitting portion extending from the first holding portion; a second optical device holding body that is sleeve-shaped and includes a second holding portion configured to hold therein at least one second optical device, and a second fitting portion extending from the second holding portion; and a welded portion that is melted and solidified over the first fitting portion and the second fitting portion in an overlapping portion between the first fitting portion and the second fitting portion. A first welding width at a center of the first fitting portion and a second welding width at a center of the second fitting portion are substantially identical in the optical axis direction of the optical unit.

A weldment includes a first component, a second component, and a weld joint coupling the first and second components together. The weld joint forms a heat affected zone in the first component and creates residual tensile stress in the first component. The first and second components cooperate to define a pocket configured to position a highest magnitude of the residual tensile stress in the first component in a location that is outside of the heat affected zone of the first component.

Base materials of a butt welded joint with a welded portion have a carbon concentration of 0.1 mass % or greater and 0.35 mass % of less. The welded portion is formed by heating by keyhole welding and then reheating by heat conduction welding, and the welded portion has a melted and solidified portion by the keyhole welding, a reheated solidified portion by the heat conduction welding, and a remelted and solidified portion. A width W0 and a depth d0 of the melted and solidified portion and a width W1 and a depth d1 of the remelted and solidified portion have the following relationships: 0.46W0≤W1; and 0.14d0≤d1≤0.73d0.

Base materials of a butt welded joint with a welded portion have a carbon concentration of 0.1 mass % or greater and 0.35 mass % of less. The welded portion is formed by heating by keyhole welding and then reheating by heat conduction welding, and the welded portion has a melted and solidified portion by the keyhole welding, a reheated solidified portion by the heat conduction welding, and a remelted and solidified portion. A width W0 and a depth d0 of the melted and solidified portion and a width W1 and a depth d1 of the remelted and solidified portion have the following relationships: 0.46W0≤W1; and 0.14d0≤d1≤0.73d0.

The assembly and welding mill for production of pipes includes a tubular billet feed device with a roller table having a longitudinal axis and passing through the assembly and welding stand with radial hold-down roller beams intended for reduction of a tubular billet that travels along the roller table and a longitudinally oriented guide knife, a carriage with rollers enabling rotation of the rollers on the inner surface of the tubular billet being moved through the assembly and welding stand. On the supporting elements of assembly and welding stand there is a laser welding head or a laser-arc hybrid welding head that can travel in transverse and vertical directions and around longitudinal axis. The carriage is rigidly connected with the supporting elements of the assembly and welding stand through a vertically oriented and longitudinally directed connecting knife. The guide knife is intended for tubular billet positioning through opening of edges at 12 o'clock position and is mounted on the supporting elements of the assembly and welding stand configured to enable vertical travel and fixation. On the carriage, there is a hold-down roller facing upwards that can travel in vertical direction to act on the edges of tubular billet from the inner side, while one of the roller beams is installed vertically that can act on the tubular billet edges from the outer side. Technical result: application of a root weld with laser technologies with guaranteed alignment of tubular billet edges regardless of size.

The assembly and welding mill for production of pipes includes a tubular billet feed device with a roller table having a longitudinal axis and passing through the assembly and welding stand with radial hold-down roller beams intended for reduction of a tubular billet that travels along the roller table and a longitudinally oriented guide knife, a carriage with rollers enabling rotation of the rollers on the inner surface of the tubular billet being moved through the assembly and welding stand. On the supporting elements of assembly and welding stand there is a laser welding head or a laser-arc hybrid welding head that can travel in transverse and vertical directions and around longitudinal axis. The carriage is rigidly connected with the supporting elements of the assembly and welding stand through a vertically oriented and longitudinally directed connecting knife. The guide knife is intended for tubular billet positioning through opening of edges at 12 o'clock position and is mounted on the supporting elements of the assembly and welding stand configured to enable vertical travel and fixation. On the carriage, there is a hold-down roller facing upwards that can travel in vertical direction to act on the edges of tubular billet from the inner side, while one of the roller beams is installed vertically that can act on the tubular billet edges from the outer side. Technical result: application of a root weld with laser technologies with guaranteed alignment of tubular billet edges regardless of size.