Abstract: In a method and device for performing welding, after the welding current reaches a first current value during a short circuit, the feeding of the welding wire is stopped, slowed down, or moved backward. As a result, the opening of a short circuit is urged to reduce the frequency at which welding is unnecessarily interrupted by an overcurrent protection function. This achieves high weld quality such as the absence of welding defects, and high production efficiency.

Abstract: The storage management computer according to the present invention can relatively easily configure a file sharing system for a file system. The storage management computer is provided with a calculation unit that includes at least a microprocessor and a communication interface circuit which communicates with a storage system, and the storage system is provided with a plurality of first pools for storing file data, and a plurality of second pools for storing block data corresponding to the file data. The calculation unit selects, from among the plurality of first pools, a predetermined first pool associated with one of the plurality of second pools, then selects a predetermined file system associated with the selected predetermined first pool, and configures a file sharing system for the selected predetermined file system.

Abstract: In a method and device for performing welding, after the welding current reaches a first current value during a short circuit, the feeding of the welding wire is stopped, slowed down, or moved backward. As a result, the opening of a short circuit is urged to reduce the frequency at which welding is unnecessarily interrupted by an overcurrent protection function. This achieves high weld quality such as the absence of welding defects, and high production efficiency.

Abstract: In a method and device for performing welding, after the welding current reaches a first current value during a short circuit, the feeding of the welding wire is stopped, slowed down, or moved backward. As a result, the opening of a short circuit is urged to reduce the frequency at which welding is unnecessarily interrupted by an overcurrent protection function. This achieves high weld quality such as the absence of welding defects, and high production efficiency.

Abstract: The storage management computer according to the present invention can relatively easily configure a file sharing system for a file system. The storage management computer is provided with a calculation unit that includes at least a microprocessor and a communication interface circuit which communicates with a storage system, and the storage system is provided with a plurality of first pools for storing file data, and a plurality of second pools for storing block data corresponding to the file data. The calculation unit selects, from among the plurality of first pools, a predetermined first pool associated with one of the plurality of second pools, then selects a predetermined file system associated with the selected predetermined first pool, and configures a file sharing system for the selected predetermined file system.

Abstract: An AC pulse arc welding method of the present invention sets an appropriate AC frequency based on a wire feed rate and a polarity ratio when the polarity ratio is changed without changing the wire feed rate to control a heat input to a base material, and sets an appropriate straight polarity current value necessary for one drop per pulse from the polarity ratio and the AC frequency in AC pulse welding. The method makes it possible to achieve appropriate AC pulse welding by setting the polarity ratio, and to easily set the welding conditions.

Abstract: In a method and device for performing welding, after the welding current reaches a first current value during a short circuit, the feeding of the welding wire is stopped, slowed down, or moved backward. As a result, the opening of a short circuit is urged to reduce the frequency at which welding is unnecessarily interrupted by an overcurrent protection function. This achieves high weld quality such as the absence of welding defects, and high production efficiency.

Abstract: An AC pulse arc welding method of the present invention sets an appropriate AC frequency based on a wire feed rate and a polarity ratio when the polarity ratio is changed without changing the wire feed rate to control a heat input to a base material, and sets an appropriate straight polarity current value necessary for one drop per pulse from the polarity ratio and the AC frequency in AC pulse welding. The method makes it possible to achieve appropriate AC pulse welding by setting the polarity ratio, and to easily set the welding conditions.