A method is provided for determining whether post-weld heat treatments should be required for external attachment welds in applications where stress corrosion cracking is a possibility. According to the method, residual stress values are measured in test samples welded at high input heat levels and test samples welded at low input heat levels for a variety of different wall thickness. A threshold residual stress level is determined according to a method of selecting a common pipe used in industry and measuring the residual stress level in the longitudinal seam of the pipe. The measured residual stress values for the high and low heat input welds are compared against the threshold to determine whether for a particular wall thickness, the high and low input data exceeds the threshold, indicating whether post-weld heat treatments are required.

A joining structure includes a first member, a second member of a material different from that of the first member, and a separation mechanism provided between the first member and the second member and that separates the first member and the second member from each other, wherein a resin is filled into the space between the edge of at least one member among the first member and the second member, and the other member.

A semiconductor device includes: a housing; a substrate inside the housing; first and second semiconductor circuits on the substrate; and first and second planar terminals electrically connected to the first and second semiconductor circuits, respectively, the first and second planar terminals stacked on top of each other, wherein each of the first and second planar terminals extends away from the housing.

A method for manufacturing a faucet including a base and a spout includes providing a first faucet portion defining a first edge extending a distance between the base and the spout, providing a second faucet portion defining a second edge extending the distance, welding, by a laser welding apparatus, the first edge of the first faucet portion to the second edge of the second faucet portion to form a welded joint extending along the distance, and grinding the welded joint to form a faucet body.

The axle welder can be easily configured and adjusted to accommodate axle assemblies of varying axle shaft lengths, hub styles (“straight” and “drop axle”) and lug bolt configurations. The axle welder uses a sliding carriage that slides along the support frame at one end of the welder to accommodate differing shaft lengths. The axle welder also includes a pair of pivoting hub lifts that accommodate both straight and drop axle style axle hubs using modular mounting plates. Modular mounting plates (“hub adaptors”) fitted to the hub lifts accommodate hub assemblies with differing lug bolt patterns. The axle welder is built on a rectangular frame that supports a pair of weld units and articulated electrode arms. The axle welder also includes a pair axle supports for carrying the axle shafts within the support frame. A shaft drive pivotally mounted to the support frame lowers to engage and rotate the axle shaft and hub assemblies in unison during the welding process.

A desktop laser cutter configured to cut a cylindrical workpiece includes a laser, a cutting head that receives an electromagnetic beam from the laser and emits a cutting beam, and a gantry that supports the cutting head relative to a base plate of the laser cutter housing. The gantry can be actuated to move the cutting head within a plane that is parallel to the baseplate. The cutting head emits the cutting beam in a direction parallel to the plane. In use, the cutting head is disposed side-by-side with the workpiece and the cutting beam is applied to a side of the workpiece that faces a sidewall of the laser cutter housing. The workpiece is supported by the gantry to rotate an amount that is a function of movement of the cutting head in a direction parallel to the plane.

A process is provided for welding an assembly of a first tubular component and a second tubular component, the first and second tubular components having first and second cylindrical portions, respectively. The process uses a pressing jig, a pressing tool, a welding jig and a welding head. The process includes: positioning the first tubular component with respect to the pressing jig; clamping the first tubular component against the pressing jig; freely fitting the second cylindrical portion into the first cylindrical portion, the two cylindrical portions being substantially coaxial; placing the second component with respect to the first cylindrical portion and the pressing jig; tightening the second tubular component against the pressing jig; aligning the two fitted cylindrical portions with the pressing tool; and pressing by plastic deformation the first and second cylindrical portions. The first and second pressed tubular components form a rigid assembly, with the two fitted and pressed cylindrical portions defining a fitting and a joint. Additional steps include: positioning the rigid assembly with respect to the welding jig; clamping the rigid assembly against the welding jig; and welding by positioning and orienting the welding head repeatably with respect to the fitting and the joint, where the rigid assembly is positioned with respect to the welding jig along one or more surfaces belonging exclusively to the first component in the pressed state.

A spud connection to a cylindrical tank wall includes a spud body welded to a cylindrical tank wall. In at least some embodiments, the spud body has an arcuate and concave first end surface, and a planar second end surface spaced apart from the first end surface. A weld joint between the first end surface of the spud body and an outer surface of the cylindrical tank wall surrounds an aperture that extends through the cylindrical tank wall, so that a leak-free fluid connection to an interior volume of the tank can be achieved.

A joined body includes: a thin plate including through holes; a first member including a proximal portion having a portion contacting the thin plate, and a protruding portion that protrudes in relation to a contact surface of the proximal portion and is inserted through the through hole; and a second member arranged oppositely to the proximal portion via the thin plate and made of a material that is same as that of the first member. The thin plate is made of a material having a specific gravity smaller than that of the material forming the first and the second members. The second member and an end portion of the protruding portion are connected to each other, by a part of the second member and a part of the end portion being melt-solidified, the end portion being at a side opposite to a side connected to the proximal portion.

A system includes a fixture, a laser assembly, and a positioning assembly. The fixture is configured to hold (i) a substrate of a distal-end assembly of a catheter and (ii) a lead placed on a given solder pad disposed on the substrate, the laser assembly is configured to emit a laser beam, and the positioning assembly is configured to move the fixture, with the substrate and the lead, relative to the laser assembly, so as to mark a soldering position, at which the lead is to be attached to the given solder pad, with a laser spot of the laser beam.