A component loading-welding system for welding a component panel to a vehicle body panel includes a rotation portion body having first and second opposing sides. The first opposing side is coupled to a robot arm. A picking device is installed in the rotation portion body and is configured to hold and release the component panel. A vehicle body pressurizing tip is installed in the rotation portion body. A pressurizing portion body is rotatably installed at the second opposing side of the rotation portion body. A pin clamp is installed in the pressurizing portion body and is configured to clamp the component panel. A component pressurizing tip is installed in the pressurizing portion body and is configured to apply pressure to the component panel. A multi point projection welding method is also disclosed.

A welding support block supports, from the rear surface of a joint to be welded, a weld pool created during a welding process. The welding support block comprises a block of metal and an outer layer of ceramic material providing a supporting surface. The ceramic material layer has a thickness between 0.25 mm and 1.5 mm. The metal material immediately beneath the ceramic material layer is made of steel. An internal line-up clamp for holding pipes in end-to-end alignment ready for welding may include multiple such welding support blocks. The use of such welding support blocks is particularly useful when laying a sour service carrying pipeline (high H.sub.2S content).

A system includes a first fixture to support one side of a part and a robot that has a second fixture to support an opposite side of the part with respect to the one side. One of the part sides has a target on a surface that indicates a location for the operation. The system has a sensor to measure the target in 3-dimensional space. A tool performs the operation at the location, and a controller moves the robot to pick up the part from the first fixture using the second fixture. The controller presents the target to the sensor for measuring the x,y,z coordinates and the yaw, pitch and roll of the target. The controller moves the second fixture with the part to the tool based upon the measurement.

A system includes a first fixture to support one side of a part and a robot that has a second fixture to support an opposite side of the part with respect to the one side. One of the part sides has a target on a surface that indicates a location for the operation. The system has a sensor to measure the target in 3-dimensional space. A tool performs the operation at the location, and a controller moves the robot to pick up the part from the first fixture using the second fixture. The controller presents the target to the sensor for measuring the x,y,z coordinates and the yaw, pitch and roll of the target. The controller moves the second fixture with the part to the tool based upon the measurement.

A laser processing apparatus includes: a chuck table for holding a single-crystal SiC ingot on a holding surface thereof; a laser beam applying unit for applying a laser beam to the single-crystal SiC ingot held on the holding surface of the chuck table; and a camera unit configured to capture an image of the single-crystal SiC ingot held on the holding surface of the chuck table. The chuck table includes a porous material making up the holding surface and a glass frame made of a non-porous material and having a recess defined therein and receiving the porous material fitted therein, and a negative pressure transfer path for transferring a negative pressure to the porous material fitted in the recess.

A jig apparatus is used for assembling a trunk lid including an upper panel, an extension panel, and a lower panel. The jig apparatus may include: a jig frame; a first activation jig unit configured to align and fix the upper panel and the extension panel and installed at the jig frame in front and rear directions to be tilting-rotatable; and a second activation jig unit aligning and fixing the lower panel and installed at the jig frame to be linearly movable in the front and rear directions with respect to the first activation jig unit.

A jig apparatus is used for assembling a trunk lid including an upper panel, an extension panel, and a lower panel. The jig apparatus may include: a jig frame; a first activation jig unit configured to align and fix the upper panel and the extension panel and installed at the jig frame in front and rear directions to be tilting-rotatable; and a second activation jig unit aligning and fixing the lower panel and installed at the jig frame to be linearly movable in the front and rear directions with respect to the first activation jig unit.

Disclosed is an apparatus for arc welding, comprising: a torch body comprising a power supply line and a gas supply line; two or more metal segments movable relative to one another being sized and shaped to surround a seam between two elongated objects to be welded together, the two or more metal segments being in electrical communication with the power supply line; and a gas jacket attached to each of the metal segments.

Disclosed is an apparatus for arc welding, comprising: a torch body comprising a power supply line and a gas supply line; two or more metal segments movable relative to one another being sized and shaped to surround a seam between two elongated objects to be welded together, the two or more metal segments being in electrical communication with the power supply line; and a gas jacket attached to each of the metal segments.

A process for room temperature substrate bonding employs a first substrate substantially transparent to a laser wavelength is selected. A second substrate for mating at an interface with the first substrate is then selected. A transmissivity change at the interface is created and the first and second substrates are mated at the interface. The first substrate is then irradiated with a laser of the transparency wavelength substantially focused at the interface and a localized high temperature at the interface from energy supplied by the laser is created. The first and second substrates immediately adjacent the interface are softened with diffusion across the interface to fuse the substrates.