Methods, devices and systems for laser decoating of coated metal sheets, in particular for removing a metal protective layer from a metal sheet by a laser beam. The laser beam is directed onto a surface of a metal sheet coated with a metal protective layer, such that the laser beam strikes the surface of the metal sheet at a laser spot and melts material of the metal protective layer. A gas is directed by a plurality of nozzles at a pressure of at least 3 bar and at an acute angle with respect to the laser beam onto the laser spot. The nozzles are arranged around the laser beam such that the gas directed from the nozzles blows away the melted material of the metal protective layer from the metal sheet.

Method for producing a component system having a first component with a first component portion and a second component with a second component portion, including the following steps: connecting, in particular welding or soldering, the first component portion, which consists of an aluminum alloy, to the second component portion, which in particular consists of a naturally aged aluminum alloy, a copper alloy or an iron alloy, in particular a steel alloy, so as to form a connection seam; artificially aging the connection seam such that the yield strength of the connection seam is above the yield strength of the first component portion and/or of the second component portion; and deforming, in particular deep-drawing and/or stretch-drawing, the component system.

A method for producing a composite component includes providing a first component with a plastic layer, providing a second component which is formed at least partially from metal, and connecting the first component to the second component to form the composite component. At least one connecting element made of metal is positively connected to the first component and electrical resistance welding to the second component so that between the connecting element and the second component a welded connection is produced.

This structural member design method is a method for designing a structural member obtained by forming a tailored blank. The method includes: a weld setting step of performing crash analysis by numerical simulation on an analytical model of the structural member, and setting the position of the weld such that a fracture index of a first region is equal to or more than a specified value and the fracture indices of all remaining regions other than the first region are less than the specified value; and a removal region setting step of setting, after the weld setting step, a region including a portion corresponding to the first region in the joined end portion as a removal region where the exposed portion is formed.

A laminate structure and method of forming is provided. The laminate structure includes a first metal sheet having a first thickness, a second metal sheet having a second thickness, and an adhesive core having an adhesive thickness. The adhesive core is disposed between and bonded to the first and second metal sheets. The first and second metal sheets are made of an aluminum based material and the adhesive core is made of an adhesive material also described as a viscoelastic adhesive material. The laminate structure is configured such that a ratio of the sum of the first and second thickness to the adhesive thickness is greater than either to one (8:1). The laminate structure including the viscoelastic adhesive core is characterized by a composite loss factor at 1,000 Hertz which is continuously greater than 0.1 within a temperature range of 25 degrees Celsius to 50 degrees Celsius.

In a vehicle body structure, an end portion of a first vehicle body member having a plate shape is coupled to a second vehicle body member having a plate shape. The first vehicle body member is made of a first metal and the second vehicle body member is made of a second metal. The vehicle body structure includes a third vehicle body member made of the first metal. The third vehicle body member includes an interposed portion having general portions and a convex portion. The convex portion has a weld-joint portion configured to be joined to the end portion of the first vehicle body member by welding. Each of the general portion has a swage-joint portion configured to be swaged and jointed to the second vehicle body member in a circular shape viewed from a thickness direction, and a cutout portion.

According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.

There is provided a blank in which two or more starting materials that overlap each other are joined with each other by laser welding, including the blank has a single layer region, in which only one of the starting materials is present, and a multi-layer region, in which two or more of the starting materials overlap each other, laser welding is continuously applied to the multi-layer region and the single layer region, and one end of a laser weld zone is located at an end portion of the single layer region of the blank, and the one end forms a concave-shaped welding end portion having a concave shape when the blank is viewed from an end face.

A method for producing a part includes providing a first and a second precoated sheet (1,2), butt welding the first and second precoated sheets (1) to obtain a blank (15), and heating the blank (15) to a heat treatment temperature at least 10? C. lower than the full austenitization temperature of the weld joint (22) and at least 15? C. higher than a minimum temperature T.sub.min:

[00001]$T_{\min }\left(?C.\right)=\mathrm{AC}3\left(\mathrm{WJ}\right)-\frac{{?}_{\mathrm{IC}}^{\max }}{100}\left(\mathrm{Ac}3\left(WJ\right)-673-40?\mathrm{Al}\right).$ where Ac3(WJ) is the full austenitization temperature of the weld joint (22)

[00002]$ ? IC max = ( 1 - ( 1 + ? ) ( max ( 1 ; ? ) T s 2 - 3 5 0 ) ( 1 - ? ) ( ? T s 2 + T s 1 ) + ? ( 1 + ? ) ( 3 FRICTION STIR WELDING PROCESS FOR LARGE METALLIC COMPONENTS 20240227063 · 2024-07-11 · William D. WELLOCK, Ryan Matthew CULLAN A method for forming a large metallic component, a friction stir welded component and a friction stir welded blank are provided. The method includes positioning a first metallic plate and a second metallic plate in an abutting arrangement. The first metallic plate and the second metallic plate have corresponding faying surfaces at a point of abutment. A backing plate is attached spanning the point of abutment adjacent the faying surfaces. The first metallic plate is friction stir welded to the second metallic plate to form a friction stir weld along the faying surfaces. The backing plate receives an end of a friction stir welding tool curing the friction stir welding. The backing plate is removed to form a welded blank. The welded blank is formed into a component form. The component is heat treated and aged to form the large metallic component. The friction stir weld in the welded blank has a stable microstructure having little or no abnormal grain growth during elevated temperature forming, heat treatment and aging. $