Abstract: The present disclosure generally relates to the field of filtration. In particular, the present disclosure relates to filtration devices, systems and methods for high flowrates and low pressure differentials through porous bodies of metal fiber media.

Abstract: A method for welding a steel pipe in a steel pipe structure and a joint is provided. The welding method includes: a measurement step of measuring a manufacturing error of the steel pipe, a calculation step of calculating the positions of the steel pipe and the joint where the manufacturing error measured in the measurement step is absorbed, and a welding step of welding the steel pipe and the joint at the positions of the steel pipe and the joint, the positions being calculated in the calculation step.

Abstract: Spine stabilization systems and integrated rods are disclosed. One spine stabilization system disclosed has at least four bone anchors and a stabilization member attached to the bone anchors. The stabilization member has first and second elongate portions interconnected by a connector portion. The first and second elongate members extend longitudinally and generally parallel to a central longitudinal axis and connector portion extends transverse to the central longitudinal axis from a first lateral end to a second lateral end. The connector portion is integrally connected to the first and second elongate portions such that there is no relative movement between the lateral ends and the respective elongate portion to which each end is attached.

Abstract: A welding system comprising a frame having a curved profile configured to at least partially surround a cylindrical work piece, a welding torch supported on the frame a motor supported on the frame and extending outward therefrom the motor being connected to at least one of the frame around the welding torch to move the welding torch relative to the workpiece a motor housing in which at least a portion of the motor is received, the motor housing defining a cooling receiver a cooling assembly adapted to circulate a coolant through the housing, the cooling assembly including a supply line and a return line connected to a cooling insert, the cooling insert being received in the cooling receiver, the cooling insert defining a cooling passage through which the coolant is circulated; wherein the supply line and return line are sealingly attached to the cooling insert with the motor housing.

Abstract: Portable weld cooling systems include a plurality of weld cooling instruments operable to combine to provide cool air to a weld area created by a weld fusion machine, and a portable cabinet comprising a transportation section and a storage section, the transportation section operable to facilitate the movement of the portable cabinet and the storage section being configured to store the plurality of weld cooling instruments when the portable cabinet is moved, wherein one or more of the plurality of weld cooling instruments may be removed from the storage section when combined to provide cool air.

Abstract: Portable weld cooling systems include a plurality of weld cooling instruments operable to combine to provide cool air to a weld area created by a weld fusion machine, and a portable cabinet comprising a transportation section and a storage section, the transportation section operable to facilitate the movement of the portable cabinet and the storage section being configured to store the plurality of weld cooling instruments when the portable cabinet is moved, wherein one or more of the plurality of weld cooling instruments may be removed from the storage section when combined to provide cool air.

Abstract: A welding apparatus of a stainless steel pipe comprises a welding torch jetting argon gas for shielding oxygen into a gap of the steel pipe rolled in a circular shape, while fusing any one of base metal and a welding material; and a gas supply pipe installed inside the steel pipe, the gas supply pipe having a jetting nozzle which jets argon gas at a rate of 4 to 20 l/min toward the inner surface of a welding bead portion, where welding has been already completed and which is positioned backwardly at a predetermined distance from a welding bead portion where welding is being performed by the welding torch.

Abstract: An electrical discharge machining (EDM) tool and method for removing tack welds on a component in a reactor pressure vessel are disclosed. The tool may include a motor, a housing which engages the component having tack welds, an electrode, positioned in the housing, a first plate, and a second plate attached to the electrode. The second plate actuates to align the electrode to the tack weld, and the electrode is discharged to remove the tack welds from the component.

Abstract: The present invention provides a method of production of electric resistance welded steel pipe able to stably reduce weld defects due to oxides by firing plasma and furthermore able to reduce plasma jet noise and comprises shaping steel plate 1 into a tube and electric resistance welding the abutting end faces 4 during which blowing on at least the abutting end faces 4a in the region 6 at the welding upstream side from the weld point 9 where the temperature becomes 650° C. or more a reducing high temperature (pseudo) laminar plasma obtained by applying voltage to a reducing gas containing H2 gas: 2 to 50 vol % to which is added a balance of Ar gas alone or a mixed gas of Ar gas to which N2 gas, He gas, or both are added. At that time, it is preferable to make the applied voltage over 120V and the make the plasma blowing conditions satisfy the following formula (1).

Abstract: This invention involves a non-eutectic structure welded joint of copper-aluminum thin wall pipe and its manufacturing method. This welded joint includes a chemical bond directly formed between the cone welding section of the copper pipe and the inner wall of the aluminum pipe, to form a columnar grain crystal with a toothed profile. The method includes providing a metal rod in a nosing end of copper pipe welded part, and installing a felder at the corresponding position of fixed electrode group. During welding, a pushing cylinder pushes the travelling electrode group with copper pipe to the aluminum pipe. At the same time a circuit is connected/powered, so the copper-aluminum combined zone is heated by electric resistance heating. The copper pipe moves to the interior of aluminum pipe continuously at the role of the pushing cylinder. The cooled metal rod is drawn out after power-down. The chemical bond directly forms in copper-aluminum joint. The weld does not have eutectic structure.

Abstract: A welding process for end connection of a first tube to a second tube along a circumferential joint by means of a weld bead, in which the first and the second tube are arranged with respect to one another in the position which is necessary for formation of the circumferential joint, a heat sink for the extraction of coolant is inserted into the first and/or the second tube such that the coolant emitted from it can cool at least one of the tubes in the area of the end to be welded, the tubes and a welding burner for production of the weld bead can be moved relative to one another along the circumferential joint and are welded by the welding burner, and the coolant is used at specific intervals.

Abstract: A system and method for attaching multiple electrical components to a heat sink is disclosed. The apparatus includes a pair of spacers for each component. The spacers define a uniform distance between a circuit board and a base of a heat sink. Each spacer is secured to the circuit board and determines a distance from a base of the component to the circuit board. The heat sink is attached to the assembly by a plurality of threaded fasteners that extend through the circuit board, through a center space of the spacers and into threaded recesses of the heat sink.