The invention belongs to the field of additive manufacturing of amorphous alloy, and discloses a laser 3D printing forming system of amorphous alloy foil and a forming method thereof. The unnecessary material of the amorphous alloy foil is cut by a first laser and then the remaining portion is selectively scanned and heated by a second laser so that the amorphous alloy is heated to be in a superplastic state in the supercooled liquid region. Then, the amorphous alloy foil is rolled by a preheated roller in combination with the ultrasonic vibration to achieve interatomic bonding between layers of the amorphous alloy foil, and the amorphous alloy foil is then rapidly cooled, so that an amorphous alloy part with a large size, a complicated shape and a porous structure is formed. The invention has overcome the limitation of the size and shape of the amorphous alloy prepared by the traditional amorphous alloy preparation methods, and uses amorphous alloy foil as a raw material, which has lower cost than the traditional 3D printing amorphous powder. In addition, a roller is used to roll the ultra-thin amorphous alloy foil such that the prepared amorphous alloy part has a more compact internal structure.

A bonding tool as the tool for ultrasonic bonding includes a plurality of protrusion portions in a protrusion region at a contact tip portion. The plurality of protrusion portions are equally spaced at a longitudinal direction interval in an X direction as the longitudinal direction of the protrusion region, and an X direction outermost protrusion portion positioned outermost in the X direction is disposed separately from a side edge of the protrusion region in the X direction by a longitudinal direction side edge distance. The plurality of protrusion portions are disposed so that a first disposition condition {0.349EX (the longitudinal direction side edge distance/DX (the longitudinal direction interval)0.510} is satisfied.

This application provides a negative electrode plate and a method for preparing same. In the method, a metal foil is connected to a foamed metal current collector by roll welding, so as to form the negative electrode plate. The metal foil forms a tab of the negative electrode plate, and the foamed metal current collector includes a foamed metal layer of a porosity of 60% to 99%, and optionally 80% to 85%. The method reduces or avoids flying metal chips and cold solder joints, and improves mechanical strength and electrical conductivity of the electrode plate. This application also provides a negative electrode plate prepared by the method, a secondary battery containing the negative electrode plate, and an electrical device.

An ultrasonic welding system for assembling materials is provided. The system may comprise a feeding device, a fabrication system, a product uniformer, and a finalization system. The feeding device may include pace feeders, position feeders, and one or more of a retention member. The pace feeders may carry and supply product materials to be distributed by the position feeders and layered by the retention member. The fabrication system may include a main retention member, attachment apparatuses, anvils, and an aperture generator. The attachment apparatuses and anvils may be utilized to crate one or more of an attachment point on the layered product materials, and the aperture generator may be utilized to create at least one through-hole ending through at least a portion of the layered product materials. The finalization system may comprise a product separator and a motion inducer. The product separator may separate the layered product materials.

A method of making an annular component includes forming sheet feedstock into an annular shape disposed about a central axis; and bonding one portion of the feedstock to another portion of the feedstock using ultrasonic welding, so as to fix the annular shape.

A manifold structure has at least one flow passage and a center manifold section that has at least one machined cavity. The manifold structure includes a plurality of ultrasonically additively manufactured (UAM) finstock layers arranged in the flow passage. After the finstock is formed by UAM, the finstock is permanently joined to the center manifold section via a brazing or welding process. Using UAM and a permanent joining process enables joining of the UAM finstock having enhanced thermal features to a vacuum brazement structure. UAM enables the finstock to be formed of dissimilar metal materials or multi-material laminate materials. UAM also enables bond joints of the finstock to be arranged at angles greater than ten degrees relative to a horizontal axis by using the same aluminum material in the UAM process and in the vacuum brazing process.

A bonding tool that executes an ultrasonic vibration processing of applying ultrasonic vibration to an application portion on a lead wire from a direct contact tip portion and a pair of press mechanisms having a pair of press rollers capable of performing a rotational operation. The pair of press mechanisms executes a press processing of pressing both sides of the application portion on the lead wire by the pair of press rollers at a time of execution of the ultrasonic vibration processing by the bonding tool and a movement processing of executing a rotational operation performed by the pair of press rollers to move the pair of press rollers on the lead wire while pressing the lead wire at a time of non-execution of the ultrasonic vibration processing.

A superconducting wire joining method joins superconducting wires each having a superconducting layer and a stabilizing layer that contacts with the superconducting layer to cover the superconducting layer. The superconducting wire joining method includes overlapping the superconducting wires such that the stabilizing layers of the superconducting wires face each other, and performing ultrasonic joining relative to overlapped portions of the superconducting wires. The overlapping of the superconducting wires and the performing of the ultrasonic joining are performed at room temperature.

A method comprises embedding tear straps in a metal aircraft structure having a fully formed contour and thickness. The tear straps include strips of fibers that are substantially stronger and stiffer than the metal aircraft structure. The fibers are embedded beneath at least one surface of the metal aircraft structure via ultrasonic consolidation.

A compact pressing body with a pressing surface smaller in area than a welding range welds together sheet-like members over the whole area of the welding range by pressing the sheet-like members being reliably moved in a direction substantially orthogonal to a pressing direction of the pressing body.