A welded joint comprising an aluminum-based base material comprising an aluminum alloy or pure aluminum and a copper-based base material comprising a copper alloy or pure copper joined by a weld metal portion is provided. The weld metal portion contains copper in ranges of less than 75% by mass and silicon in ranges of less than 13% by mass and has a higher content of copper and silicon than the aluminum-based base material.

The disclosure relates to a method for welding steel sheets made of steel materials coated with an aluminum silicon anti-corrosion layer, in particular CMnB and CMn steel materials that can be hardened using the quench hardening method, wherein a welding filler rod is used in the welding of the sheets and the welding filler rod has the composition: C=0.80-2.28% C base material, Cr=8-20, Ni<5, Si=0.2-1, Mn=0.2-1, Mo<2, with the rest being composed of iron and unavoidable smelting-related impurities and with all indications expressed in % by mass.

The disclosure relates to a method for welding steel sheets made of steel materials coated with an aluminum silicon anti-corrosion layer, in particular CMnB and CMn steel materials that can be hardened using the quench hardening method, wherein a welding filler rod is used in the welding of the sheets and the welding filler rod has the composition: C=0.80-2.28% C base material, Cr=8-20, Ni<5, Si=0.2-1, Mn=0.2-1, Mo<2, with the rest being composed of iron and unavoidable smelting-related impurities and with all indications expressed in % by mass.

A system for and a method of controlling filler wire is provided. The system includes a high intensity energy source configured to heat at least one workpiece to create a molten puddle on a surface of the at least one workpiece. A filler wire feeder is configured to feed a filler wire into said molten puddle, and a travel direction controller is configured to advance the high intensity energy source and the filler wire in a travel direction to deposit the filler wire on the at least one workpiece. The system also includes a filler wire controller configured to move the filler wire in at least a first direction during the feeding and advancing of the filler wire. At least the first direction is controlled to obtain a desired shape, profile, height, size, or an admixture of a bead formed by the molten puddle.

A system for and a method of controlling filler wire is provided. The system includes a high intensity energy source configured to heat at least one workpiece to create a molten puddle on a surface of the at least one workpiece. A filler wire feeder is configured to feed a filler wire into said molten puddle, and a travel direction controller is configured to advance the high intensity energy source and the filler wire in a travel direction to deposit the filler wire on the at least one workpiece. The system also includes a filler wire controller configured to move the filler wire in at least a first direction during the feeding and advancing of the filler wire. At least the first direction is controlled to obtain a desired shape, profile, height, size, or an admixture of a bead formed by the molten puddle.

Disclosed is a multi-mode laser device for metal manufacturing applications including additive manufacturing (AM), laser cladding, laser welding, laser cutting, laser texturing and laser polishing. The multi-mode laser device configures off-axis, solid-state diode or diode-pumped lasers into an array to perform precision controlled, direct metal deposition printing, cladding, laser welding, laser cutting, laser texturing and laser polishing through a single device. Dual-mode printing, cladding and welding capability using metal wire and powder feedstock sources in the same device is provided with in-line control, precision wire feed driver/controller, adjustable shield gas diffuser, and nozzles tailored to wire feedstock diameter.

A laser shielding device interposed between the camera and the reflected light and is provided with a plurality of plates juxtaposed at an interval. Of the plurality of plates, an incident-side plate disposed on an incident side of the reflected light may be made larger in heat capacity compared to other plates disposed on the camera side of the incident-side plate.

A laser shielding device interposed between the camera and the reflected light and is provided with a plurality of plates juxtaposed at an interval. Of the plurality of plates, an incident-side plate disposed on an incident side of the reflected light may be made larger in heat capacity compared to other plates disposed on the camera side of the incident-side plate.

A method for joining a first part formed of an aluminum material to a second part formed of a steel material by metal inert gas welding and cold metal transfer is provided. An aluminum filler material forms a fillet joint between the parts and provides a structure for automotive body applications, such an aluminum bumper extrusion joined to a steel crush box connection. The first part includes a notch for hiding the start and end of the joint. A transition plate formed of a mixture of aluminum material and steel material can be disposed between the first part and the second part to provide the notch. The second part can include a mechanical fastener further joining the parts together. In another embodiment, the second part includes a plurality of dimples and is welded to the first part along the dimples.

A method for joining a first part formed of an aluminum material to a second part formed of a steel material by metal inert gas welding and cold metal transfer is provided. An aluminum filler material forms a fillet joint between the parts and provides a structure for automotive body applications, such an aluminum bumper extrusion joined to a steel crush box connection. The first part includes a notch for hiding the start and end of the joint. A transition plate formed of a mixture of aluminum material and steel material can be disposed between the first part and the second part to provide the notch. The second part can include a mechanical fastener further joining the parts together. In another embodiment, the second part includes a plurality of dimples and is welded to the first part along the dimples.