170results about "Storage discharge welding" patented technology

Embodiments of energy storage caddies adapted to couple to a welding power supply are provided. The energy storage caddies may include an energy storage device, a charger, control circuitry, and power conversion circuitry. Certain control circuitry may be adapted to control the energy storage device to discharge to provide a direct current (DC) voltage output to the welding power supply when a weld load demand is detected, to monitor a charge level of the energy storage device, and to alert a user to an error when the charge level of the energy storage device falls below a predetermined limit.

A welding equipment for metallic materials capable of performing heat treatment such as tempering based on partial heating in spot welding is provided. The welding equipment 1 sandwiches metallic materials 9 with a pair of electrodes 4, 4, and heats different regions of the metallic materials 9 by energization, with the pair of electrodes 4, 4 maintained at the same position with respect to the metallic materials 9. The welding equipment includes a first heating means 6 connected to the pair of electrodes 4, 4 for heating and welding the internal region of the circle defined by projecting the cross-sectional area of the axis of the electrodes on the metallic materials by applying power having a low first frequency, a second heating means 8 for heating a ring-shaped region along the circle by applying power having a second frequency that is higher than the first frequency, and an energization control unit 10 for independently controlling the first and the second heating means 6, 8.

The object of the present invention is to provide a high-efficiency, high-quality lithium battery tab automatic welding machine. The lithium battery tab automatic welding machine can automatically weld the lithium battery and the tab, and at the same time, it can also automatically transport the welded lithium battery.

A method of making a combination tool including a mining drill bit and reamer. The combination tool includes drill bit body having a plurality of cutting segments attached thereto, a reamer body having a plurality of reaming segments attached thereto, and the drill bit body and the reamer body being configured to selectively attach to the one another. The cutting segments and reamer segments being attached by laser welding to the drill bit body and reamer body, respectively.

A fusion welding method is provided for fusion welding at juxtaposed interface surfaces a first member, for example made of a first metal based on at least one of Ru, Rh, Pd, and Pt, with a second member made of a second metal, for example a high temperature alloy based on at least one of Fe, Co, and Ni, including at least one identified element, for example Al, that can form a continuous layer of a brittle intermetallic compound with the first metal that is free of such element. With the interface surfaces disposed in contact, energy is generated at the interface surfaces in a combination of an amount and for a first time selected to be sufficient to heat the interface surfaces to a fusion welding temperature. However, the first time is less than a second time that enables formation at the fusion welding temperature of the continuous layer of the brittle intermetallic compound at the interface surfaces. A welded article is provided with a fusion weld free of such continuous layer of the brittle intermetallic compound.

In the energy-storing multifunctional welding machine, the charge voltage of the energy-storing capacitors is selected via controlling the on-off of the AC zero-crossing solid relay, instead of voltage regulation of main transformer. At the same time, one sensitive and reliable voltage monitoring negative feedback system is designed to ensure the DC voltage fluctuation of energy-storing capacitors less than 0.2 %. The energy-storing multifunctional welding machine includes energy-storing capacitors, proportional voltage regulating system, welding output loop with thyristor switching assembly,voltage monitoring negative feedback system, thyristor triggering control system and power supply system. it may be used with various kind of welding guns.

The invention relates to a precision resistant welding spot-welder which is mainly used for welding enamel wire extraction contacts and minimal work pieces in the manufacturing of electric elements with small coils and comprises main power supply, a welding head and a die; among which, the main power supply which comprises a resistant welding transformer and a power supply control device provides step wave pulse output and outputs suitable current for welding through the power supply control device; the die connects the welding head and the output through the resistant welding transformer and provides welding power. The resistant welding spot welder output by the step wave of the invention reduces the damages to the welding head caused by excessive current which is used for burning the insulating varnish of the enamel wire and prolongs the service life of the welding head.

The invention has an object of facilitating the detection of defective welds and improving the efficiency of manufacturing electrolyzer units. A a method of manufacturing an electrolyzer unit comprises a step of arranging a partition member on a front surface of a cathode pan and welding a top side and a left side of the cathode pan to the partition member to form a gas-liquid separation chamber, a step of performing a similar step on an anode pan, a step of arranging cathode ribs on a front surface of the cathode pan and clad plates on a back surface of the cathode pan at positions corresponding to the cathode ribs, welding them at the same time, putting a back surface of the anode pan over the back surface of the cathode pan and arranging anode ribs on a front surface of the anode pan at positions corresponding to the clad plates, a step of simultaneously performing on the anode pan a similar step of arranging anode ribs on a front surface of the anode pan at positions corresponding to the clad plates, and a step of inserting frame members into spaces formed between flange portions of the cathode pan and flange portions of the anode pan.

The invention discloses a medium-voltage capacitive energy storage welding machine, which comprises a three-phase power source, a step-up transformer, a three-phase rectifier module, an energy storage module and a welding transformation module, wherein the step-up transformer is connected with three-phase alternate current to perform step-up treatment on input alternate current; the three-phase rectifier module is connected with the step-up transformer and the energy storage module respectively; the alternate current which is stepped up is rectified into direct current by the three-phase rectifier module and is charged to the energy storage module; the voltage value of the direct current is 500-1,000V; the energy storage module comprises a plurality of energy storage capacitors; the energy storage capacitors are metal thin film non-polar capacitors, and the withstand voltage of the energy storage capacitors is more than 1,000V; and the welding transformation module is connected with an output end of the energy storage module. The medium-voltage capacitive energy storage welding machine provided by the invention is safe in operation and is cost-saving.

A portable stud welder apparatus is provided for welding a stud onto a work piece. The portable stud welder apparatus includes a housing and an energy storage device. A weld stud gun that is configured to hold a weld stud is electrically connected to the energy storage device for receiving energy from the energy storage device to pass a current through the stud and the work piece to form a weldment. At least one battery of the lithium ion type that is removeably coupled to the housing to establish an electrical connection with said energy storage device and provide energy to the energy storage device.

Disclosed is a method for double-skin resistance welding of oil sump of vibration-damping clad plate in the welding art, which contains: locating the fuel outlet plane of oil sump of vibration-damping clad plate on the location seat of welder, and locating the fuel outlet double-screw bolt on the fuel outlet and aligning. The two upper-electrodes decreasing at the same time, the first upper-electrode pressed on the fuel releasing double-screw bolt, the second upper-electrode pressed on the outer ring of the fuel outlet of the oil sump and near the double-screw bolt, the energy storage capacitor one- time discharging by energy storage welding transformer after the two electrodes are compacted, the second upper-electrode being released after energisation, at the same time the three lower-electrodes of point welding lifting and contacting with the lower steel plate of the fuel outlet of the oil sump and being compacted, energizing by alternating resistance welding transformer to complete the welding of doubling plate, keeping forcing, the second upper-electrode and the three lower-electrodes of point welding being released at the same time, the welding is completed, and finally the sealing and strength connection of fuel releasing double-screw bolt and doubling vibration-damping clad plate is formed. The welding has a high output rate, the sealing of the joint is good and the strength high, and the damage to the intermediate insulating layer of the vibration-damping clad plate is small.

The once flattening and energy storing capacitor welding process for connecting wide thin steel bands includes vertical overlapping two steel bands to be welded on the planar lower electrode, lowering the upper electrode to densify the overlapped area, once discharging of the energy storing capacitor via the welding transformer in the designed parameters, maintaining the pressure after finishing discharge to complete once welding and form weld seam. The present invention is suitable for common cold rolled low carbon steel plate and galvanized steel plate. The present invention has high welding efficiency and welded joint has high strength and toughness.

An economical capacitor-type welding device and capacitor-type welding method that have a small power loss, that can be made compact, and that reliably control a charging circuit without being affected by the inductance of a charging path. In an exemplary capacitor-type welding device and an exemplary capacitor-type welding method of the invention, a bypass switching element having a forward-blocking function is connected in parallel to output terminals of a charging circuit, and the bypass switching element is brought into a conduction state to allow a backflow current, which is caused to flow by a magnetic energy stored in the inductance of a primary winding or an inductor included in the charging path, to bypass the charging circuit. A discharge switching element is brought into a conduction state after the bypass switching element enters the non-conduction state and recovers the forward-blocking function.

A ball and socket joint is provided for a vehicle. The ball and socket joint includes a housing (9), with a joint inner part (2), which is seated in the housing (9), extends from this and is mounted movably in the housing (9) with a bearing area (4) having a spherical surface or partial spherical surface (7) via the intermediary of a bearing shell (8). The housing has two housing parts (10, 12) meshing with one another, which are firmly connected to one another by means of at least one welded connection (19, 20), wherein the two housing parts (10, 12) are braced against one another in the radial direction to form a press fit.

This method is for manufacturing a rolling bearing having a rotatable ring, a non-rotatable ring, rolling bodies and a flange coupled with a first ring amongst the rotatable ring and non rotatable ring. This method includes at least the following steps: forming the rings and the flange as three independent parts, immobilizing a weldable insert onto the first ring, by electro magnetic pulse technology (EMPT) or by capacitor discharge welding (CW), and welding together the insert and the flange or the insert and a flange holding member. The rolling bearing includes the insert immobilized on the first ring by magnetic pulse welding (MPW), magnetic pulse forming (MPF) or by capacitor discharge welding (CDW). Moreover, the flange or a flange holding member is welded on the insert.

The invention provides a welding method for sealing of opening of metal pipe casting and comprises the following steps: A. a welding equipment work platform is provided; B. a metal pipe casting with an opening is provided; C. a plugging block matched with the opening of the metal pipe casting is provided; D. the plugging block is arranged on upward side of the opening of the metal pipe casting; E. the welding equipment is started and the metal pipe casting and the plugging block are welded together; the welding method adopted by the welding equipment is resistance welding. The welding method provided by the invention has the advantages of high welding speed, no requirement for additive packing material, easy realization of automation and high working efficiency; short heating time and energy saving due to centralized heat lead to small heat affected field and small deformation and stress, moreover, calibration and heat treatment process are not necessary to be arranged after welding, with no flue and no requirement for numerous abrading and polishing; the invention is energy saving and environmental friendly while saving material.