A method for forming an article is disclosed, including laser welding a powder of an HTW alloy to a surface of a substrate along a weld path, forming a weld bead of the HTW alloy. The weld path is propagated along a weld direction, forming a cladding layer of the HTW alloy on the surface. The laser welding includes a laser energy density of at least about 11 kJ/cm.sup.2, and laser welding the powder to the surface includes a welding speed of about 5-20 ipm. The weld path oscillates essentially nonparallel to a reference line, establishing a cladding width wider than the weld bead width. The weld bead contacts itself along each oscillation such that the cladding layer is continuous and essentially free of cracks. A turbine bucket is disclosed including a squealer tip having the cladding layer with a cladding layer thickness of at least about 0.2 inches.

A laser machining device includes a first focus movement amount calculation section configured to calculate a focus movement amount based on comparison of a first measurement value obtained by averaging a plurality of measurement values measured by a returning light measurement unit within a first period and a second measurement value obtained by averaging a plurality of measurement values measured by the returning light measurement unit within a second period that is temporally later than the first period; and a focus position correction section configured to correct a focus position during laser machining based on the focus movement amount, and the first period is a period shortly after initiation of laser emission when the external optical system is not warmed up or is a period after correcting the focus position, and the second period is a period after passage of a certain time duration when the external optical system is warmed up.

Provided is a cutting device including a machining table configured to float a workpiece having a plate shape, a laser radiation unit configured to radiate a laser beam onto the workpiece, a coolant injection unit configured to inject a coolant onto the workpiece, and a moving device configured to relatively move the workpiece with respect to the laser radiation unit and the coolant injection unit in a preset direction. In the cutting device, a scattering member configured to receive injection of the coolant from the coolant injection unit and scatter the coolant is installed at the machining table in front of the workpiece in a moving direction in which the workpiece relatively moves.

A double side welding method used for producing a differential gear for welding a weld part to join a ring gear fitted on a gear case from both sides. The method uses welding distortion caused by welding to improve product accuracy. The method includes welding from both sides of a weld part where a first member and a second member, which are the objects being joined, face each other. The method is performed by first welding, which is performed from one side, and second welding, which is performed from the other opposite side from that first welding. Heat quantity adjustment, that adjusts the quantity of heat input to the weld part for the second welding, is performed after the first welding, and is carried out such that an amount of welding distortion that is the objective arises.

A double side welding method used for producing a differential gear for welding a weld part to join a ring gear fitted on a gear case from both sides. The method uses welding distortion caused by welding to improve product accuracy. The method includes welding from both sides of a weld part where a first member and a second member, which are the objects being joined, face each other. The method is performed by first welding, which is performed from one side, and second welding, which is performed from the other opposite side from that first welding. Heat quantity adjustment, that adjusts the quantity of heat input to the weld part for the second welding, is performed after the first welding, and is carried out such that an amount of welding distortion that is the objective arises.

A laser machining robot system that simplifies programming of a scanner operation is provided. A laser machining robot system includes a robot controller that controls a robot that performs remote laser machining and a scanner controller that controls a scanner. The robot controller includes: a machining information input unit that inputs machining information; a G-code generation unit that generates a G-code program using the machining information; and a G-code communication unit that transmits the G-code program to the scanner controller. The scanner controller includes a scanner program processing unit that applies the G-code program as a scanner operation program for operating the scanner.

A knife configured for use with an electrosurgical forceps having curved jaw members and a method of manufacturing the same. The knife includes a distal body having an inner side and an outer side, a first etching on the outer side of the distal body defining a distal cutting edge and a second etching on the outer side of the distal body extending along a portion of a length of the distal body to define relatively protruded and relatively recessed surfaces extending along a portion of the length of the distal body on the outer side thereof.

A knife configured for use with an electrosurgical forceps having curved jaw members and a method of manufacturing the same. The knife includes a distal body having an inner side and an outer side, a first etching on the outer side of the distal body defining a distal cutting edge and a second etching on the outer side of the distal body extending along a portion of a length of the distal body to define relatively protruded and relatively recessed surfaces extending along a portion of the length of the distal body on the outer side thereof.

A knife configured for use with an electrosurgical forceps having curved jaw members and a method of manufacturing the same. The knife includes a distal body having an inner side and an outer side, a first etching on the outer side of the distal body defining a distal cutting edge and a second etching on the outer side of the distal body extending along a portion of a length of the distal body to define relatively protruded and relatively recessed surfaces extending along a portion of the length of the distal body on the outer side thereof.

A turbine housing assembly can include a turbine housing that defines a rotational axis for a turbine wheel; and a cartridge receivable by the turbine housing, where the cartridge includes spacer posts and a plate component that includes spacer post openings, where the spacer posts are laser beam welded into the spacer post openings to form laser beam welds to define an axial vane clearance between the plate component and a surface of the turbine housing contacted by ends of the spacer posts, and where each of the laser beam welds includes a power ramp-up area, an intermediate area and a power ramp-down area, where the power ramp-down area curves away from the power ramp-up area to reduce weld defects.