A spot welded member includes a spot weld formed by holding a sheet stack of multiple steel sheets between a pair of electrodes and spot-welding the sheet stack, in which at least one of the multiple steel sheets is a high-strength zinc-based coated steel sheet having a tensile strength of 780 MPa or more, the high-strength zinc-based coated steel sheet having a coating with an Al content of 0.5% or more by mass, and in which the heat shock region of the spot weld outwardly extending from an edge of a corona bond area includes a coated layer including an FeAl alloy layer having an average thickness of 0.3 ?m or more and a zinc-based coated layer having an average thickness of 2.0 ?m or more on the FeAl alloy layer at the interface between the base steel sheet of the high-strength zinc-based coated steel sheet and the coating.

Disclosed herein are methods of bonding a multi-layer film to a substrate and resulting structures thereof. A method of laser bonding a multi-layer film to a substrate can include forming a film over a first surface of a first substrate that is transmissive to light at a first wavelength. The film may include a reflective layer that is reflective to light at the first wavelength and a refractive layer that is refractive to light at the first wavelength. The method may include irradiating a region of the film using laser radiation passing through the first substrate. A wavelength profile of the laser radiation can have a peak at about the first wavelength. The first wavelength can be between about 300 nm and about 5000 nm.

A braking mechanism includes a wedge selectably engageable with a guide rail, and a frictional surface defined on the wedge configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material. An elevator system includes an elevator car, a guide rail along which the elevator car travels, and a braking mechanism located at the elevator car and selectably engageable with the guide rail to slow or stop travel of the elevator car along the guide rail. The braking mechanism includes a wedge having a frictional surface configured for selective engagement with the guide rail in an overspeed condition. The frictional surface includes a friction coating of polycrystalline blocky diamond material.

A method of separating a coated substrate includes directing an infrared laser beam onto a first surface of the coated substrate. The coated substrate includes a coating layer disposed on a transparent workpiece, a plurality of defects is disposed within the coated substrate along a contour line that divides a primary region from a dummy region of the coated substrate from a dummy region of the coated substrate. The method also includes translating at least one of the coated substrate and the infrared laser beam relative to each other such that an infrared beam spot traces an oscillating pathway that follows an offset line in a translation direction and oscillates between an inner and outer track line, the oscillating pathway is disposed on the dummy region of the coated substrate, and the infrared laser beam applies thermal energy to the plurality of defects to induce separation of the coated substrate.

A pulley assembly having a body, a shaft mount and a plurality of bolts is disclosed. The body is aligned to the shaft mount by providing a tight tolerance between a shoulder portion of the bolt and a neck portion of a counter sunk hole formed in the body. Additionally, an outer surface of the body may have a pattern of friction lines or patches formed by fusing particulate matter to the outer surface with heat generated by a laser beam.

A soldered product comprising a first component soldered to a second component is provided. The first component comprises a stainless steel substrate, an adhesion promoter layer made of nickel deposited on at least one joining surface of the stainless steel substrate; and a tin layer deposited on the adhesion promoter layer. The tin layer has a layer thickness in the range of 10-30 m. The second component is typically a rare earth magnet.

A method for converting an existing steam methane reformer (SMR) to produce hydrogen via ammonia cracking is provided. The method can include the steps of: providing the existing SMR, wherein the SMR was formerly used to produce hydrogen from a hydrocarbon feedstock; and improving the nitridation resistance of the inner surface of the equipment by adding a protective layer to an inner surface of equipment to be used in the existing SMR, wherein the equipment is selected from the group consisting of a catalyst tube, feed piping, a feed preheater, process gas heat exchangers, and combination thereof.

A welding wire for obtaining a giga-grade weld, a welded structure manufactured using same, and a welding method thereof are provided. The welding wire of the present invention comprises: by mass % of the whole wire, 0.08 to 0.15% of C; 0.001% to 0.1% of Si; 1.6 to 1.9% of Mn; 0.015% or less of P; 0.015% or less of S; 4.0 to 5.2% of Cr; 0.4 to 0.65% of Mo, and the remainder being Fe and unavoidable impurities, wherein value X defined by the following relation 1 satisfies the range of 0.7 to 1.1%. [Relational Expression 1] X (%)=[Cr]/10+[Mo]4x[Si]/[Mn].

A method for treating a coating on a scrolling substrate by a treatment unit generating a laser beam, the method including producing a pattern including several lines or portions extending in the scrolling direction and/or the direction orthogonal to the scrolling direction, the pattern being repeated to cover treat the surface of the substrate.

A pre-coated steel substrate wherein the coating including at least one titanate and at least one nanoparticle; a method for the manufacture of an assembly; a method for the manufacture of a coated steel substrate and a coated substrate substrate. It is particularly well suited for construction, shipbuilding and offshore industries.