A system may include an emitting device and a controller. The emitting device may be adapted to emit a first laser beam and a second laser beam. The controller may include one or more processors and may be operably coupled to the emitting device to control emission of the first and second laser beams. The controller may be adapted to remove a portion of a workpiece to form an exposed surface of the workpiece with the first laser beam using the emitting device and to remove a portion of the exposed surface with the second laser beam using the emitting device.

An apparatus is provided for cutting pieces from laminar material wound in coil using a laser or plasma cutting machine. In one apparatus according to the invention, a cutting station includes at least one moveable cutting head arranged between the station's entrance and exit, and a means to position a portion of laminar material on a cutting plane. The positioning means includes three separate locking devices, each of which can lock on a portion of the laminar material as it passes through the cutting station. The three locking devices are arranged in succession: the first near the cutting station's entrance, the second near the exit, and the third between the first and second locking devices. At least the third locking device is movable, in the space between the other two devices, along a portion of laminar material while the material is kept under tension.

An object of the present invention is to provide a production method for efficiently producing a metal laminate having high bonding strength. A method for producing a metal laminate material comprising the steps of: sputter etching faces to be bonded of a stainless steel and an aluminum such that an oxide layer remains on each face; temporarily bonding the faces to be bonded of the stainless steel and the aluminum by roll pressure bonding; and thermally treating the temporarily bonded laminate material at a temperature lower than the recrystallization temperature of the stainless steel to thermally diffuse at least a metal element comprised in the stainless steel into the aluminum.

A method for producing an alloy self-brazing strip. In an aspect, a process is used to generate a multi-layer alloy strip made up of at least one base layer of with a least another layer of material, that when both the material and base layer are brazed, form an alloy. In an aspect, the other layer of material can include a metal. The base layer can include titanium or a titanium alloy.

A method for producing a hot-rolled clad composite material may involve cleaning surfaces of multiple flat products, at least one surface of which has a natural unevenness. The cleaned surfaces may then be connected and brought into contact by stacking the flat products. The flat products may then by regionally welded to create a flat product package. The method may further involve heating the flat product package to an initial hot-rolling temperature, hot-rolling the flat product package to form a hot strip, and either cutting the hot strip into plates or sheets or coiling the hot strip to form a coil.

A tool and method for bonding layers of a shell by the differential pressure bonding process. The tool and method includes a plurality of separable mandrel segments that combine to form a mandrel having a longitudinal axis, an outer surface, an upper end, and at least one substantially continuous inner surface. The inner surface has a substantially axisymmetric shape having complex curvature. In this embodiment, the tool further includes a retort configured to at least partially shroud the outer surface and upper end of the hollow body. The retort includes at least one vacuum port. The tool is configured to facilitate the compression of a plurality of layers of a multi-layer shell having complex curvature as the shell layers and an interdisposed bonding material are heated to an elevated bonding temperature.

Local metallization of semiconductor substrates using a laser beam, and the resulting structures, e.g., micro-electronic devices, semiconductor substrates and/or solar cells, are described. For example, a solar cell includes a substrate and a plurality of semiconductor regions disposed in or above the substrate. A plurality of conductive contact structures is electrically connected to the plurality of semiconductor regions. Each conductive contact structure includes a locally deposited metal portion disposed in contact with a corresponding a semiconductor region.

A composite material includes: a first member containing tungsten as a primary component; a second member containing copper as a primary component, the second member being joined to the first member; and a metal containing at least one metal selected from a group consisting of titanium, zirconium, and hafnium, the metal being present in the second member, wherein a concentration of the metal is more than 0 atomic % and less than or equal to 5.0 atomic % at a location of 5 ?m from a joining interface between the first member and the second member toward the second member side.

A metal strip and a process for manufacturing such a metal strip are disclosed. In order to be able to reproducibly manufacture a durable metal strip, it is proposed for a butt seam to extend essentially between a first cladding layer of a first strip transverse portion and a second strip transverse portion.

This disclosure relates to a method for manufacturing a double pipe, including: a primary roll forming step of forming bending portions on both sides of a strip for an external pipe in a longitudinal direction; a stacking step of stacking a strip for an internal pipe on the strip for the external pipe; a secondary roll forming step of mechanically coupling the strip for the external pipe and the strip for the internal pipe; a forming step of forming the strip for the external pipe and the strip for the internal pipe, mechanically coupled to each other, into a pipe shape; a welding step of bonding the bending portions on both sides of the strip for the external pipe, and the strip for the internal pipe, which are formed into the pipe shape; and a heat treatment step of heat-treating bonded portions of the strip.