Abstract: A welding laser beam (L1) is radiated along welding loci (C11, C12) set in workpieces (W1, W2), or an inspection laser beam (L5) is radiated along scanning loci (C51, C52) set in a molten pool (Y1) of the workpieces that are molten by radiation of the welding laser beam, a returned light beam (L2) including reflection light from the molten pool, vapor light caused due to melting and evaporation of the workpieces, and thermal radiation light emitted from the molten pool is received, and a welding state of a welded portion of the workpieces is inspected based on an intensity of a returned light beam received in a first region inside the molten pool which is relatively close to a given point and an intensity of a returned light beam received in a second region inside the molten pool which is relatively spaced from the given point.

Abstract: The first embodiment of the invention is a spot welding method using a welding gun including a pair of electrodes holding and welding a welding point of a workpiece. The method including: transmitting an ultrasonic from one of the electrode pair to the workpiece with the electrode pair holding the workpiece; receiving the ultrasonic at the other electrode passed through the electrode pair and the workpiece; and detecting a holding state of the workpiece on the basis of an amplitude of the received ultrasonic. According to the embodiments of the invention, the welding gun can hold the workpiece at the proper position and with the correct angle, thereby reducing the welding flaws.

Abstract: Provided is a composite nanometal paste which, when a layer of the paste interposed between upper and lower bodies is sintered in an inert gas under no load until the layer turns to a metal layer, attains a shear bond strength between the upper and lower bodies of 10 MPa or higher. The composite nanometal paste contains, as metallic components, composite metallic nanoparticles comprising metal cores with an average particle diameter of X (nm) and an organic coating layer formed around the circumference, metallic nanofiller particles having an average particle diameter of d (nm), and metallic filler particles having an average particle diameter of D (nm), and satisfies the first relation X<d<D and the second relation X<d<100 (nm).

Abstract: A reinforcement fibrous cord having excellent adhesive strength produced by impregnating a meshed cord fabric formed from warp yarns for reinforcement cords and weft yarns having a softening temperature or a melting temperature lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the warp yarns, with adhesive agent, and heat-treating the fabric at the temperature equal to or higher than the softening or melting temperature of the weft yarn and lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the warp yarns so that the weft yarns are self-broken while being fuse-adhered to the adhesive agent-impregnated warp yarns whereby projections caused by the broken residues of the weft yarns are formed on the warp yarns.

Abstract: Provided is a composite nanometal paste which, when a layer of the paste interposed between upper and lower bodies is sintered in an inert gas under no load until the layer turns to a metal layer, attains a shear bond strength between the upper and lower bodies of 10 MPa or higher. The composite nanometal paste contains, as metallic components, composite metallic nanoparticles comprising metal cores with an average particle diameter of X (nm) and an organic coating layer formed around the circumference, metallic nanofiller particles having an average particle diameter of d (nm), and metallic filler particles having an average particle diameter of D (nm), and satisfies the first relation X<d<D and the second relation X<d<100 (nm).

Abstract: A reinforcement fibrous cord having excellent adhesive strength produced by impregnating a meshed cord fabric formed from warp yarns for reinforcement cords and weft yarns having a softening temperature or a melting temperature lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the warp yarns, with adhesive agent, and heat-treating the fabric at the temperature equal to or higher than the softening or melting temperature of the weft yarn and lower than any of the softening temperature, the melting temperature and the thermal decomposition-initiating temperature of the warp yarns so that the weft yarns are self-broken while being fuse-adhered to the adhesive agent-impregnated warp yarns whereby projections caused by the broken residues of the weft yarns are formed on the warp yarns.

Abstract: The canvas of the present invention for forming a rough surface of toothed belt is formed from warp yarns which are formed from composite yarns each comprising a core yarn comprising, as a principal component, half-drawn synthetic fiber yarns having an elongation at break of 50 to 200% and a covering yarn wound around the core yarn, comprising, as a principal component, high mechanical strength, high treat resistant fibers and preferably twisted at a twist number of 300 to 4000 turns/m, and weft yarns; and has a capability of being easily produced by meaning, uniform appearance and yarn distribution and excellent abrasion resistance.

Abstract: A tire fabric woven of warps comprising synthetic yarns subjected to first twisting and final twisting and wefts comprising synthetic yarns, wherein said wefts have a breaking elongation of 70 to 180% and a strength of not more than 2.0 N at the primary yield point, and have loops and sagging.

Abstract: There is provided a hybrid code having excellent dimensional stability and flexing resistance for use in a reinforcement of rubber, and a rubber product reinforced with the hybrid code. The hybrid code 1 has glass fiber strands 2 disposed at its center, and aramid fiber strands 3 disposed therearound. Glass fiber filaments applied with RFL treatment are bound to form the strands. A plurality of the strands are primarily twisted at a twisting rate of 1 to 10 turns/25 mm. Aramid fiber filaments applied with RFL treatment are bound to form the strands. A plurality of the strands are primarily twisted at a twisting rate of 1 to 10 turns/25 mm. The glass fiber strands 2 primarily twisted are disposed at a center, and the aramid fiber strands 3 are properly twisted in an opposite direction to the primary twist. The code is overcoated to form a rubber coat.

Abstract: A multiple-task controller includes a plurality of tasks which are controlled with first and second external devices: task memory input/output devices provided respectively for the tasks; a serial input/output processing section and a parallel input/output processing section which process signals transmitted between the first and second external device and the input/output processing section, and perform writing and reading operations with respect to the task memory input/output devices; and a task control section which applies commands written in the task input/output devices respectively to the tasks, and applies the states of process of the tasks respectively to the task memory input/output devices.

Abstract: A modified fibrous material useful as a reinforcing material for rubber articles is produced by applying a cold plasma treatment to a fibrous material comprising at least one type of synthetic fibers selected from aromatic polyamide fibers and polyester fibers under a reduced pressure; by applying an ion-plating treatment with a polyamide vapor to the resultant cold plasma-treated fibrous material under a reduced pressure; by impregnating the resultant ion-plated fibrous material with an RFL adhesive composition comprising a resorcinol-formaldehye precondensation product and a rubber latex; and by curing the adhesive composition in the fibrous material.