A magnetic component with a rare-earth magnet is provided. The rare-earth magnet has a bronze coating that partially or entirely covers the surface of the rare-earth magnet. Further, the tin coating partially or entirely covers the bronze coating. A production process for the magnetic component as well as a soldering method for connecting the magnetic component with a substrate is also provided.

A tool assembly for performing operations in confined spaces, the tool assembly includes a telescoping pole having a proximal end and a distal end. The telescoping pole is capable of extending between a retracted position and an extended position. A working tool is connected to the distal end of the telescoping pole, and a control unit is connected to the proximal end of the telescoping pole. A flexible cable extending through the telescoping pole electrically connects the working tool to the control unit.

A component arrangement comprising a first component which has a first joining surface and a second component which has a second joining surface. The first joining surface is connected to the second joining surface using an integrated reactive material system. The integrated reactive material system comprises at least one coating of at least one of the joining surfaces, and the integrated reactive material system comprises an activation region on one surface. The integrated activation region is arranged outside of the joined together regions of the first or second joining surfaces and adjoins the regions which are joined together.

An exothermic welding cup and an exothermic welding capsule, wherein the exothermic welding cup comprises a cup, a cover and an igniter; the cup is used to accommodate welding powder, the cup has an opening, and the cover is used to cover the opening; the igniter comprises a heating portion disposed in the cup, and the heating portion has an insulating member and a heating member; and the insulating member is disposed between the heating member and the cover. The exothermic welding cup can avoid the shorting caused by the contact between the heated heating member and the cover. Also, an encapsulation ring disposed between the cover and the cup is configured to seal the welding powder within the cup so as to prevent the powder from falling out, and the encapsulation ring made of stainless steel ensures effective encapsulation of the welding powder within a certain welding time.

A welded assembly and a method of reaction metallurgical welding are disclosed. The assembly includes a first metallic workpiece and a second metallic workpiece attached together by at least two overlapping weld joints. The overlapping weld joints are reaction metallurgically joined (RMJ) weld joints, and each overlapping weld joint overlaps with the other overlapping weld joint by 10-75%. The method of welding includes providing a reactive material between and in contact with the first and second workpieces. In a first position, the workpieces and the reactive material are pressed together, heated, and held between first and second tools to form a first RMJ weld joint between the workpieces. Then, in a second position, the workpieces are pressed together, heated, and held between the tools to form a second RMJ weld joint that overlaps with the first RMJ weld joint.

A method of controlling the ignition of exothermic weld material includes providing an exothermic welding system. The exothermic welding system includes: a controller including or connected to a battery; and a cable comprising a first end connected to a controller and a second, opposite end connected to an igniter, with a wire filament, attached to a mold holding the weld material. The method includes: receiving a wireless input signal from a portable electronic device; and in response to receiving the input signal, directing current from the battery to the second end of the cable to ignite the weld material.

Exothermic welding molds, weld-metal containing cartridges for such molds, and methods of use are provided. The mold, cartridges, and methods can provide interaction between the cartridge's disk member with the mold, which allows the housing member to be withdrawn from the mold while leaving the disk member and weld-metal in place. The interaction can be a rotational restraint alone, a vertical restraint alone, or combinations thereof. Alternately, the interaction can be an outward pressure on the housing member and/or disk member, a shear force on the housing member and/or disk member, or combinations thereof. The outward pressure on the housing member and/or disk member can alternately be provided without interaction between the disk member and the mold, but rather by the simple application of an internal pressure to the cartridge. The internal pressure can be applied by squeezing the walls of the cartridge and/or by depressing a pusher member.

A bonded body of copper and ceramic includes: a copper member made of copper or a copper alloy and a ceramic member made of an aluminum oxide, the copper member and the ceramic member being bonded to each other; a magnesium oxide layer which is formed on a ceramic member side between the copper member and the ceramic member; and a Mg solid solution layer which is formed between the magnesium oxide layer and the copper member and contains Mg in a state of a solid solution in a Cu primary phase, in which one or more active metals selected from Ti, Zr, Nb, and Hf are present in the Mg solid solution layer.

A multiple spot vaporizing foil actuator weld (VFAW) system includes a target sheet layer secured relative to a stabilizing component, such that standoff components may be arranged sandwichably between the target and a flier sheet layer. An electrically insulating layer separates the flier from a vaporizing component sheet layer, which may comprise at least two vaporizing subsections configured to have less conductive material than at least three dividing subsections that separate the vaporizing subsections. The geometry and/or other features of the vaporizing subsections may be varied to optimize the vaporization. A second electrically insulated stabilizing component may sandwichably secure the above components between the first stabilizing component in order to control the forces generated in the VFAW process. The method involves loading the vaporizable component sheet layer with electrons via applied voltage such that the vaporizing subsections sublimate. The rapidly expanding gas particles accelerate the flier, completing the weld.

An exothermic welding apparatus and an exothermic welding method, belonging to the exothermic welding field are provided. The exothermic welding apparatus includes a mold, an igniter and an electronic starter, the mold has a holding space configured to accommodate an exothermic welding flux, the igniter includes a heating wire, a first conductor wire and a first connector, the heating wire is configured to ignite the exothermic welding flux directly, one end of the first conductor wire is electrically connected to the heating wire, the other end of the first conductor wire is electrically connected to the first connector, and the electronic starter cooperates with the first connector and is configured to supply power to the first connector. The exothermic welding apparatus can ignite an exothermic welding flux by supplying power with an electronic starter.