48results about How to "Short welding cycle" patented technology

An ultrasonic capillary welding method for the Al-base composite material includes such steps as arranging upper and lower parts to be welded in such manner that the gap between them is 10-300 microns, putting the flux close to lap end, heating to smelt the flux, holding the temp, pressing the ultrasonic head onto surface of the part to be welded, and applying ultrasonic vibration for 0.5-15 S. Its advantages are high welding quality, low welding temp, and high speed.

The present invention relates to relates to welding method, and is especially ultrasonic brazing process of obtain composite brazed seam in aluminum-base composite material. The process includes the following steps: 1. filling brazing alloy; 2. primary brazing; and 3. ultrasonic vibration treatment to obtain composite brazed seam in aluminum-base composite material. The said brazing process can obtain brazed joint with greatly improved mechanical performance and heat expansion performance, low heat expansion coefficient, and high strength near that of the mother material.

The invention relates to a brazing method for a non-metallic material and a metal material, in particular to a non-metallic material and metal material brazing method capable of forming interpenetrating network structure brazing seams. The problem that large residual stress exists on a joint welded through the brazing method for the non-metallic material and the metal material is solved. The method comprises the steps that grinding is carried out through abrasive paper; acetone is used for cleaning; the materials are overlapped according to a certain sequence; welding is carried out, and the materials are placed in a vacuum brazing furnace to be welded. The brazing method is used for brazing of the non-metallic material and the metal material.

The invention discloses a cross-flow fan blade welding robot. The cross-flow fan blade welding robot comprises a material distribution and conveying module, a material grabbing mechanical arm, a pre-positioning module, a feeding module, an ultrasonic welding machine and a material receiving module; the welding robot is used for conveying a workpiece to the material grabbing mechanical arm through the material distribution and conveying module and is primarily shaped and self-centered through being clamped by three clamping claws; then the workpiece is conveyed into the pre-positioning module to realize eight-clamping-claw clamped self-centering and rotary alignment of positioning marks; four-clamping-claw clamped self-centering, compensation of translation errors and rotary angle errors, and blade embedment of soft landing and rotary search are realized by the feeding module, and furthermore, the welding is finished in an ultrasonic welding machine through the clamping self-centering and the clamping force control of four guide rods, two-grade type welding head movement and a digital power supply driven ultrasonic transducer; then the material receiving module is used for taking out a welded finished product and conveying the welded finished product to a material storage belt line. The cross-flow fan blade welding robot has the advantages of rapid welding period, low noises, high yield, short line exchanging time, online real-time quality monitoring, stability and reliability in operation and the like.

The method for low temperature brazed aluminum alloy to obtain brazed joint with high temperature use performance includes the following steps: 1. setting the brazing alloy inside the brazed gap; 2. primary brazing; and 3. ultrasonic treatment. The said brazing process has no any etching on the aluminum alloy workpiece, short brazing period, low brazing temperature, low operation cost, and capacity of obtaining brazed joint with high strength and high temperature use performance.

The invention provides a semi-solid brazing method for aluminum alloy and a composite material thereof under the assistance of non-vacuum mechanical stirring, which comprises the steps of: mounting a weldment taking the aluminum alloy or the composite material thereof as a base material on a welding platform first; placing intermediate-temperature solder on two surfaces to be welded, heating the weldment to between 390 and 420 DEG C, and ensuring that the solid fraction of the solder is between 50 and 80 percent; staring a rotary sliding device, wherein the rotating speed is between 150 and 300 r/m, the temperature is constant, and the longitudinal movement rate, which is parallel to a welding seam, of a stirring head is between 0.5 and 2 cm/min; stopping the rotary sliding when the stirring head moves to the terminal of the welding seam; increasing the temperature to between 430 and 450 DEG C, performing thermal insulation for 1 to 5 minutes, and ensuring that the solid fraction of the solder is between 10 and 40 percent; restarting the rotary device again, wherein the rotating speed is between 20 and 150 r/m; sliding the stirring head in a reverse direction, wherein the movement speed is between 1 and 2 cm/m; stopping the rotation, when the stirring head moves to the initial end of the welding seam, and lifting the stirring head; and cooling the solder along with a furnace after thermal insulation for 5 to 30 minutes. The method can realize the low-cost, high-efficiency and high-quality welding of the aluminum alloy or the composite material thereof.

The invention relates to a magnesium alloy and aluminum alloy heterogeneous non-vacuum machinery forced rotation semi-solid brazing method; a magnesium alloy weldment and an aluminum alloy weldment are clamped on a clamp, Zn-Sn or Zn-Al-Sn system other brazing materials are arranged on two surfaces to be brazed, the weldments are heated, the heating temperature is between 350DEG C to 450DEG C, simultaneously pressure is increased, the pressure range is 0.1MPa to 1MPa, so that the brazing materials on a middle layer are in a semi-solid state, a rotary device is started, the rotating speed is 65r/min to 1500r/min, the temperature is constant during a rotation process, and the rotation time is 10s to 300s. After the rotation, the temperature rises by a certain rate, the heat is insulated at preset temperature, so that the brazing materials dissolve parent materials with a certain thicknesses, the heat insulating temperature is between 400DEG C to 480DEG C, and the heat insulating time is1min to 5min. Afterwards, pressure is increased, the pressure range is 0.1MPa to 1MPa, the rotary device is started again (secondary rotation), the rotating speed is 65r/min to 600r/min, rotation is stopped after 3s to 60s, and cooling is carried out with a furnace after the heat is insulated for 5 min to 30min. The magnesium alloy and aluminum alloy heterogeneous non-vacuum machinery forced rotation semi-solid brazing method can realize the high-efficiency, high-quality and economic connection of a magnesium alloy and an aluminum alloy.

The invention provides an anti-vacuum semi-solid states stirring soldering method of magnesium alloy and composite material thereof, which comprises the following steps of: a weldment taking the magnesium alloy or the composite material thereof as a parent metal is arranged and blocked on a welding platform and medium temperature brazing filler metal is put on two surfaces to be welded; the weldment is heated in the temperature of 380 to 430 DEG C to cause that the solid phase ratio of the brazing filler metal is between 50 to 80%; hereupon, a rotational sliding device is started; the rotary speed is 150 to 300 r/m; the temperature is constant; a stirring head is parallel to the longitudinal movement speed of 0.5-2cm/min of a welding line; when the stirring head moves to the terminal of the welding line, the rotational sliding stops; the holding time is 1 to 5 minutes so that the weldment is further dissolved; the rotational device is started again; the rotary speed is 20 to 150 r/m; the stirring head slides in a negative direction; the movement speed is 1 to 2 cm/min. When the stirring head moves to the initial end of the welding line, the rotary stops; the stirring head is lifted; the holding temperature is 5-30 minutes, and a furnace cools. The method can realize the low cost, high efficient, high quality welding of the magnesium alloy and the composite material thereof.

The invention discloses a brazing method for a cable shielding layer and a shell, wherein wire branching holes are formed in two ends of the shell; a cable passes through the wire branching holes; and the brazing method comprises the following steps of: winding, namely winding brazing wires on parts, opposite to the wire branching holes, of the cable shielding layer; fixing, namely fixing the cable, the shell and the brazing wires by a clamp; heating, namely, putting a brazing part into an induction coil and heating the brazing part by induction heating equipment; and cooling, namely stopping heating until the brazing part is cooled. By the brazing method, one-time molding of joints at two ends of the shell can be realized, the shape of the shell is uniform and stable, the brazing quality is easy to guarantee, and efficient and automatic production requirements can be met.

The invention discloses an automatic wire-feeding friction stir welding method for butt joint of dissimilar metal materials. The automatic wire-feeding friction stir welding method comprises the following steps that 1, welding pieces are in butt joint with each other and are clamped, an interval is formed between the welding pieces, strip-shaped welding wires are led out from a wire-feeding gun, a straightening wheel set, a pre-buried wheel and a leveling wheel are sequentially placed on the interval, the strip-shaped welding wires are straightened through the straightening wheel set, then obliquely downwards fed into the interval through the pre-buried wheel and later leveled through the leveling wheel, and the ends of the strip-shaped welding wires are arranged under a stirring head; 2, a welding machine is started, the stirring head starts vertical downwards feeding, later a stirring needle is pressed into the interval where the strip-shaped welding wires are stored, welding is started, and in the welding process, the wire-feeding speed keeps consistent with the welding speed; and 3, the stirring head is lifted, then wire feeding is stopped, and the strip-shaped welding wires are cut off. According to the automatic wire-feeding friction stir welding method for butt joint of the dissimilar metal materials, generation of chemical compounds between metal can be reduced, the interface temperature is decreased, the residual stress is reduced, a welding joint is prevented from generating holes, and the mechanical property and the welding efficiency of welding connectors are improved.

The invention relates to a non-vacuum semi-solid machine-assisted rotary soldering method for a magnesium alloy and a composite material thereof, which comprises the following steps of: clamping the magnesium alloy and a composite material weldment thereof on a fixture, putting Zn-Sn or Zn-Al-Sn solders and the like on two surfaces to be welded, heating the weldment at the temperature of between 350 and 450 DEG C, and applying pressure of 0.1 to 1MPa to make the solder in an intermediate layer positioned in a semi-solid state; starting a rotating device, rotating at a speed of 65 to 1,500r/min for 10 to 300 seconds, and keeping the temperature constant in the rotating process; raising the temperature at a certain heating rate after rotation is stopped, and preserving heat at the predetermined temperature of between 400 and 480 DEG C for 1 to 5 minutes to make the solder dissolve parent metal with certain thickness; and applying pressure of 0.1 to 1MPa, starting the rotating device again, rotating for the second time at a speed of 65 to 600r/min for 3 to 60 seconds, stopping rotation, preserving heat for 5 to 30 minutes, and cooling with a furnace. By the method, the magnesium alloy and the composite material thereof can be efficiently and economically connected at high quality.

The invention discloses LED lamp filament column welding equipment. The LED lamp filament column welding equipment comprises a feeding module, a welding module and a material carrying module used fortransferring LED lamp filament columns to the welding module from the feeding module. The feeding module comprises a vibration disc and a vibration guide rail connected with a discharging port of thevibration disc. The welding module is provided with a welding executing device. The welding executing device comprises a pot welding machine, two electrode columns and a spot welding machine lifting driving mechanism for driving a spot welding needle to move up and down. The material carrying module comprises a supporting positioning mechanism, a first material carrying device for carrying the LEDlamp filament columns to the supporting positioning mechanism from the vibration guide rail, a material taking carrying device for carrying the LED lamp filament columns away from the supporting positioning mechanism, and a discharging carrying device used for carrying the LED lamp filament columns to the two electrode columns from the material taking carrying device. According to the equipment,LED lamp filament column carrying and positioning work and welding work in the welding process can be automatically finished, and the beneficial effects that the welding effect is good, and the welding efficiency is high are achieved.

A method for brazing a foamed aluminum plate and an aluminum plate by removing interfacial oxide films through bubble wall friction relates to a welding method in the field of brazing, and solves the problem that an existing foamed aluminum plate and an existing aluminum plate are low in joint strength as the existing foamed aluminum plate and the existing aluminum plate are directly brazed, brazing filler metal is non-wetted and oxide films are difficult to remove. The method includes the steps: firstly, cleaning and drying the foamed aluminum plate and the compact aluminum plate; secondly, heating the foamed aluminum plate, sliding rod-like brazing filler metal on a surface to be welded of the foamed aluminum plate in a reciprocating manner, and coating the brazing filler metal on the surface of the foamed aluminum plate to be welded; thirdly, butting end surfaces to be welded of the foamed aluminum plate and the compact aluminum plate, and heating butt joint surfaces to melt the brazing filler metal on the butt joint surfaces; fourthly, sliding the foamed aluminum plate on an interface to be welded in a reciprocating manner for 5-15 times, and exerting pressure in a direction perpendicular to the surface to be welded; and fifthly, stopping sliding friction, exerting pressure again, cooling the plates after heat preservation, and connecting brazing interfaces of the foamed aluminum plate and the compact aluminum plate. The method is used for welding the foamed aluminum plate and the aluminum plate.

The invention discloses a tool used for track welding, comprising a main cross frame, wherein the main cross frame is connected with a jack base by a bolt and is welded with a travelling mechanism, and pressed welding of the track can be achieved by a jack on the jack base. The tool is mainly used for welding of main trolley tracks of harbor machinery, and has the characteristics of being simple to produce, convenient to assembled, strong in field adaptability and low in cost. The tool is quick, high in efficiency and good in quality when being used for carrying out trolley track welding,