The disclosed technology generally relates to welding, and more particularly to welding multi-layered structures. In an aspect, a method of welding multi-layered metallic workpieces comprises providing a pair of multi-layered workpieces. Each of the workpieces has a base layer and an cladding layer, where the cladding layer comprises a corrosion resistant element adapted to suppress corrosion in a ferrous alloy. The method additionally comprises forming a root pass weld bead to join cladding layers of the workpieces using a first filler wire comprising the corrosion resistant element and focusing a first laser beam on the cladding layers. The method additionally comprises forming one or more weld beads to join base layers of the workpieces by resistively heating a second filler wire and directing a second laser beam over the root pass weld bead. The method is such that a concentration of the corrosion-resistant element in the one or more weld beads is less than 50% of a concentration of the corrosion-resistant element in the root pass weld bead.

This invention relates to a container pre-cutting system, applicable to container forming machines (4) with laminar material (3) that provide intermittent advances to the laminar material with a length according to an advance step of the machine; said system being suitable for making a lower pre-cut (32) on the lower surface and an upper pre-cut (32) on the upper surface of the laminar material (3). The system comprises a lower pre-cutting device (1) by laser, with at least one laser head (15), and an upper pre-cutting device (2) by blade or by laser. The pre-cutting devices (1, 2) are separated in the advance direction of the laminar material (3) by a length equal to a multiple of the advance step of the machine.

A composite component includes a reinforcement bonded to a base component by a bond formed by, or reinforced with, a localized coupling in the base component. The bond may be formed by ultrasonic additive manufacturing. The localized coupling may include a compression of the base component, a weld in the base component, or a heat affected zone of the weld. Where the bond is formed by the localized coupling, the localized coupling encompasses the reinforcement. Where the bond is reinforced with the localized coupling, the localized coupling may encompass the reinforcement, or be arranged at an inside radius of a turn in the reinforcement. The reinforcement results in the composite component having enhanced properties such as lower density, increased strength, stiffness, or energy absorption capabilities.

A vehicle component (1) includes at least one dimensionally stable component base body (2) and at least one plastic layer (3) which is connected to at least one subregion of the component base body (2) in a materially bonded and areal manner and forms a surface portion of the component (1). In order to provide a component (1) which can be produced in a rapid and cost-effective manner and which has at least one customizable surface portion, the plastic layer (3) comprises a proportion of a thermally activatable foaming agent which is configured in such a way that a temperature for producing the plastic layer (3) is lower than a temperature for activating the foaming agent.

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.

A method of processing a thin film structure comprising: providing a thin film structure comprising a stack of two or more thin film layers supported on a surface of a substrate, the stack having a depth orthogonal to the substrate surface; and forming a cut through the depth of the stack by using a direct write laser technique to scan a laser beam along a scan path covering an area of a desired cut line on a surface of the stack to ablate material of the stack along the cut line and through the depth of the stack at least to the surface of the substrate; wherein the direct write laser technique is implemented using an ultrashort pulsed laser outputting pulses with a duration of 1000 femtoseconds or less, at a wavelength in the range of 100 to 1500 nm, and delivering a fluence in the range of 50 to 100,000 mJ/cm.sup.2

A clad material includes a first layer made of stainless steel and a second layer made of Cu or a Cu alloy and roll-bonded to the first layer. In the clad material, a grain size of the second layer measured by a comparison method of JIS H 0501 is 0.150 mm or less.

A method and apparatus are disclosed with a continuous straw forming process for spiral winding boron-coated foil into a rounded tube or cylinder with an overlap and tight contact between the spiral edges, and a welding process utilizing a high precision fiber laser to weld the spiral seem forming a straw tube.

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.

A clad material includes a first layer made of stainless steel and a second layer made of Cu or a Cu alloy and roll-bonded to the first layer. In the clad material, a grain size of the second layer measured by a comparison method of JIS H 0501 is 0.150 mm or less.