This joint component is a joint component including a first steel member, a second steel member, and a spot-welded portion that joins the first steel member and the second steel member, in which the first steel member includes a steel sheet substrate having a predetermined chemical composition and a coating that is formed on a surface of the steel sheet substrate, contains Al and Fe, and has a thickness of 25 μm or more, in a cross section in a thickness direction of the first steel member and the second steel member including the spot-welded portion, a filled metal containing Al and Fe is present in a gap between the first steel member and the second steel member in a periphery of the spot-welded portion, in the cross section, the filled metal has a cross-sectional area of 3.0×10.sup.4 μm.sup.2 or more, and has a filling ratio of 80% or more in the gap in a range of 100 μm from an end portion of a corona bond formed in the periphery of the spot-welded portion, and includes a first region and a second region.

A resistance spot welding method for spot welding plural steel sheets including at least one galvanized steel sheet containing 0.08 mass % or more of C and 0.50 mass % or more of Si and having a tensile strength of 980 MPa or more, the resistance spot welding method includes, using a pair of electrodes including a pair of electrode tips configured to sandwich and pressurize the plural steel sheets and a pressurizing force absorbing mechanism provided in at least one of the pair of electrode tips and capable of absorbing a pressurizing force in an axial direction of the electrode tips, welding by sandwiching the plural steel sheets between the pair of electrode tips and energizing the pair of electrode tips with a pressurizing force applied, while absorbing a fluctuation load of the pressurizing force generated during the energization by the pressurizing force absorbing mechanism.

An exemplary embodiment of the present invention discloses an aluminum-based blank including: a first plated steel plate; a second plated steel plate connected to the first plated steel plate; and a joint connecting the first plated steel plate and the second plated steel plate at a boundary between the first plated steel plate and the second plated steel plate.

A laser cutting method for metal foil includes: cutting a processing target by laser by intermittently applying a pulse of laser beam to a surface of a metal foil serving as the processing target at a frequency of 1 [MHz] or less.

A method for producing a joining connection between at least two metal sheets or at least two components made of hot-workable sheet metal with a scaling-resistant coating, comprising is provided. The method includes at least one step in which a connection is produced between the at least two metal sheets or sheet-metal components by hot-press soldering, wherein the surface of the metal sheets or components to be connected is pretreated in order to break up the coating.

A welded steel part obtained by welding a first sheet with a second sheet, at least one with a coating of aluminum alloy. The welding uses a welding wire which, after melting and cooling, constitutes a weld bead connecting the first sheet to the second sheet and being part of said welded steel part. The respective peripheral edge of the first and second sheets are in a joggled edge type configuration in which the peripheral edge of the first sheet is arranged above, and on or near the upper face of an end portion of the peripheral edge of the second sheet which is extended by an inclined junction portion, at least one part of the upper face of the inclined junction portion delimits at least laterally with the edge of the peripheral edge of the first sheet a groove receiving the weld bead, the inclined joining portion extending by a welding portion in longitudinal continuity with the peripheral edge of the first sheet.

A method for forming a connection between a busbar (1) and a contact section (20) comprising: providing a first conductive section (11) made from aluminum, providing a second conductive section (12) made from aluminum, wherein the second conductive section (12) includes the contact section (20) or is connected to the contact section (20) and wherein the second conductive section (12) is at least partially covered with nickel and/or tin creating a laser welding bond, in particular a laser welding seam (10), between the first conductive section (11) and the second conductive section (12), by laser welding.

A grain-oriented electrical steel plate of an exemplary embodiment of the present invention has a groove formed on a surface, wherein a curvature radius RBb at a position where a depth of the groove is maximum is 0.2 μm to 100 μm, and a curvature radius RSb on the groove surface from the position where the depth of the groove is maximum to a quarter-way position of the depth D of the groove is 4 μm to 130 μm.

A method for producing a resistance-welded member made of three or more sheets including a plated steel sheet includes: a main energizing by performing energization with a first current value while compressing the steel sheet with a first compressive force to form a nugget; a subsequent energizing by performing, after the main energizing, energization such that the current value gradually decreases from the first current value while compressing with a second compressive force greater than the first compressive force; and holding an electrode while maintaining the second compressive force after the subsequent energizing. The second compressive force and a total sheet thickness, compression rise delay time, and a downslope time and an electrode holding time satisfy respective predetermined conditions.

The herein disclosed manufacturing method of the electrode plate includes a core body exposed area cutting step for cutting a negative electrode core body exposed area with a laser, on which a negative electrode core body is exposed while a negative electrode active material layer is not provided, so as to form a negative electrode tab. Then, regarding the herein disclosed manufacturing method of the electrode plate, the negative electrode core body includes a first surface and a second surface whose surface roughness is smaller than the first surface, and the laser is irradiated to the first surface. By doing this, it is possible to suppress the sputters from sticking to the second surface, and therefore it is possible to decrease the sticking number of the sputters to the negative electrode tab.