34results about How to "Welding quality is easy to control" patented technology

The invention discloses a process method for assembling and welding a pile leg of an ocean platform. According to the method, the production speed is high, and the percent of pass of products is high. A pile leg assembly is composed of a rack and two semicircular pipes. Coming cargo examination should be carried out on the rack and the semicircular pipes carefully, and the rack and the semicircular pipes are installed through a tool. The rack is turned over through a turnover device. The assembled pile leg examined to be qualified is lifted to an electric heating furnace stage trolley, conveyed into a furnace and heated, wherein the temperature ranges from 150 DEG C to 200 DEG C. The temperature in a hearth should be kept even. The heated pile leg is placed on the ground. Two welding joints are in the horizontal state. Manual welding rods are used for backing welding. Welding is performed on the pile leg by four welding workers from the middle position. The two sides are simultaneously and symmetrically welded. After welding is finished, the pile leg is turned over and welded continuously. After the welding joints are backed for 1 to 2 layers, the pile leg is lifted to roller carriers on a submerged arc welding production line and then formally welded. The welded pile leg is conveyed into a thermal treatment furnace, the heating temperature ranges from 200 DEG C to 280 DEG C and maintained for 2 to 3 hours, and then the pile leg is delivered out of the thermal treatment furnace.

The invention discloses a cantilever welding machine of fillet weld in a narrow space. The cantilever welding machine comprises a lifting mechanism, a transverse moving mechanism, a welding mechanism,an electric controller and an electric welding machine, wherein the lifting mechanism is vertically arranged, the transverse moving mechanism is arranged on the lifting mechanism, and the lifting mechanism drives the transverse moving mechanism to move up and down; the welding mechanism is arranged on the transverse moving mechanism, the welding mechanism can move on the transverse moving mechanism, the welding mechanism is connected with the electric welding machine, the electric welding machine is connected with the electric controller; and the lifting mechanism and the transverse moving mechanism are both connected to the electric controller, and the electric controller can control the lifting mechanism and the transverse moving mechanism to move. According to the cantilever welding machine, the operation is simple, digital, accurate and controllable.

The invention provides a method of driving low energy ultrasonic metal welding by nanoparticles. The method comprises the following steps of preparing nanoparticle paste or powder; and coating a to-be-welded surface f upper and lower to-be-welded metals with 1-50 [mu]m thick nanoparticle paste or powder and then carrying out ultrasonic welding at room temperature or in a heating condition. By adopting the technical scheme, conventional solid phase connection at a peak of a coarse surface in the ultrasonic welding process, a size effect of the nanoparticles at gaps, a friction temperature riseeffect and a gap filling effect are integrated to further form a good ultrasonic welding joint with a lower ultrasonic welding input energy, so that the production process is simplified, the influenceto a to-be-welded material is reduced, and performance such as sealing property of a weld joint, mechanical properties of the welding joint, electrical conductivity and heat conductivity are improved.

The invention discloses a longitudinal supporting frame of an automobile transverse stabilizing bar. The longitudinal supporting frame comprises a longitudinal supporting frame body with the U-shaped cross section, an omega-shaped clamping hoop is connected to the front end of the longitudinal supporting frame body, the clamping hoop is formed in the mode that the bottom face of the longitudinal supporting frame body forwards extends, and an outward turning edge is arranged at the back end of the longitudinal supporting frame body. A strengthening piece provided with the U-shaped cross section and formed by sheet metal parts in a whole stamping mode is arranged in the longitudinal supporting frame body, the front end of the strengthening piece is welded with the arc face of the clamping hoop, and the two sides of the strengthening piece are welded with the two sides of the longitudinal supporting frame body. The longitudinal supporting frame is high in strength and good in bearing capacity, and can solve the problems of deformation and weld failures in the using process.

The invention discloses an automatic system for producing toothed plate structures in automobile seats. The automatic system is characterized by comprising a charging mechanism, a re-positioning mechanism, a welding mechanism, a discharging mechanism and a visual detection mechanism, wherein the charging mechanism comprises a rack charging station and a connection plate charging station; the pre-positioning mechanism comprises at least one positioning table; a connection plate positioning pin which is matched with a toothed plate rotary central hole is arranged on the positioning table; the welding mechanism comprises a welding platform, a laser welding device and a magnetic clamping component; the discharging mechanism comprises a discharging mechanical arm and a conveyer belt; the visual detection mechanism judges whether the toothed plates are qualified or not through an image comparison device; unqualified products are removed; and qualified products are output by the conveyer belt. By adopting the automatic system, automatic production of the toothed plate structures is realized through charging, positioning, welding, discharging and detecting; and production yield and production efficiency are improved.

The ultra-thin spherical shell is highly valued by users for its good force characteristics, beautiful appearance and material saving. However, the traditional complex manufacturing technology prevents it from being widely used. The moldless overall hydroforming ultra-thin spherical shell technology simplifies various special-shaped spherical shells such as metal standard oval balls, eggshell balls, and raindrop balls, and various metal special-shaped spherical shells made of different materials. body manufacturing process. The production cost is only 1/20 of the traditional technology to manufacture the same shell, and the production cycle is 1/50. This technology is ideal for the production of ultra-thin metal spherical shells and ultra-thin spherical shells made of different materials. Economical and practical manufacturing technology.

The invention discloses a cell module BUSBAR welding robot and a machining method thereof. The welding robot comprises at least one false welding prevention device and a welding device, wherein the false welding prevention devices limit cell modules with BUSBARs in a welding position, and enable at least electrode part of each cell in the cell module to tightly bond with the BUSBARs in a self-adaption manner; and the welding device at least can perform a reciprocating motion in a first direction and a second direction, and adopts non-contact welding to realize connection between the cell modules and the BUSBARs. The welding robot can perform self-adaption adjustment according to the fitness between the electrodes of each cell and the BUSBARs through a set of extension columns, so that theelectrodes of each cell are tightly bonded with the BUSBARs, the false welding condition during welding can be effectively prevented, and the welding quality is fully guaranteed; and meanwhile, the non-contact welding mode is adopted without considering adverse effect on the welding quality from the factors of welding voltage, welding pressure, welding needles and the like, so that the welding process is easy to control, the automation degree is high, the welding quality is stable, and the efficiency is high.

The invention relates to a resistance butt welding machine for welding rotor coils of a steam turbine generator set. The resistance butt welding machine for welding the rotor coils of the steam turbine generator set comprises a fixed platform. A first pair of guide rail mechanisms are arranged on the fixed platform. A second pair of guide rail mechanisms and a third pair of guide rail mechanisms are arranged between the first pair of guide rail mechanisms. The axes of the first pair of guide rail mechanisms, the second pair of guide rail mechanisms and the third pair of guide rail mechanisms are overlapping. A number of welding table systems are arranged on the first pair of guide rail mechanisms through sliding grooves. Each welding table system comprises an inverted-arranged U-shaped welding support. Each welding support is provided with a hydraulic pump, a heating transformer and a shaping hydraulic shear. A controller is arranged on one side of each welding support. The resistancebutt welding machine for welding the rotor coils of the steam turbine generator set has the beneficial effects that the rotor welding quality of the generator set is easy to control, and the resistance welding quality is high; it is easy for the operating staff to master the welding method, and the assembling technology of a large-scale generator set is simplified; both sides work simultaneously,and efficiency is high; and overturning is assisted by rolling racks, and working efficiency and safety are improved.