84results about How to "Realize continuous welding" patented technology

An explode welding repairing method which is hard to dilute metal compound board, firstly, the thickness of hard-diluting metal board is larger than the original board material by 0.5 to 1mm, the area of board material is larger than a defect zone by 20 to 60 mm2; secondly, proceed fine polishing to the compound board at the position under epair; thirdly, put rare metals on the surface under epair, the compound board under epair is made as the lower layer of base board; fourthly, the rare metal board and a placode under epair, the enlarged supporting gas between the two boards adopts edge supporting, the gap is of 7 to 10mm and laid in parallel; fifthly, the rare metal board surface after protecting is distributed with explode evenly, the protecting layer uses lubricate resin adding thinner, the thickness of the protecting layer equals to 0.5 to 1mm; sixthly, the size of the fire point is controlled below the diameter of 15mm; seventhly, after exploding compound, the invention is level to the main material after heat process, flattening and repairing and abrasion of the connection edge.

The invention relates to a flux-cored wire for welding low-temperature steel. The flux-cored wire comprises a cylindrical skin, wherein a through hole penetrating through the skin along the axis line is formed in the skin, and the through hole is filled with flux core powder composed of mineral powder, metal simple-substance powder (except rare earth elements), alloyed powder, metal oxide powder and rare earth. According to a preparation method of the flux-cored wire, the flux core powder is prepared first and then added into a U-shaped groove which is formed by drawing a steel belt; next, after an opening of the U-shaped groove is closed, the through hole penetrating through the steel belt is formed in the axial direction of the steel belt, and the flux core powder is arranged in the through hole; lastly, the flux-cored wire is obtained by means of step-by-step drawing and diameter reduction. The flux-cored wire can be welded in all directions, the welding efficiency is high, and weld joints are stable in metal performance and more attractive in appearance; besides, the average impact work of deposited metal at the low temperature of minus 60 DEG C can reach 65 J, so that the properties such as low-temperature impact toughness and low-temperature anti-cracking performance are improved to a higher grade.

The invention discloses a flux-cored wire for overlay welding of a forging die and an application thereof, and belongs to the technical field of material processing welding materials. Flux core powder is coated with a carbon steel belt; the filling rate of the flux-cored wire is 30-37 percent; and the flux core powder comprises the following substances in percentage by mass: 4-7 percent of calcium fluoride, 0.5-3 percent of soda ash, 0.5-4 percent of quartz, 2-6 percent of rutile, 13.6-27.2 percent of high-carbon ferro-chrome, 13.9-19.2 percent of pure chromium powder, 2.2-5.7 percent of nickel powder, 1.8-4.3 percent of electrolytic manganese, 6.3-13.2 percent of ferromolybdenum powder, 2.1-5.0 percent of ferrosilicon powder, 0.6-1.9 percent of vanadium iron powder, and the balance of reduced iron powder. The welding wire has very high high-temperature hardness and heat-fatigue resistance, and continuous welding can be realized.

The invention discloses a method for preparing a joint made of a dissimilar material by firstly ultrasonically prefabricating and secondly welding a transition belt. The method comprises the main steps of stacking at least one layer of metal foil on the surface of a to-be-connected material through ultrasonic rolling welding to form a stacking layer; after the stacking layer is prepared, cutting off a foil disconnected part at the periphery of the stacking layer by a milling cutter of an ultrasonic rolling welding system, and milling the stacking layer to form the transition belt with a proper shape and a proper size; directly welding the transition belt with another to-be-connected metal by a fusion welding method, a braze welding method or a diffusion welding method so as to obtain the joint made of the dissimilar material with the macrostructure being formed by the to-be-connected material, the transition belt, a welding seam and another to-be-connected material. The technical scheme has the characteristics that through stacking the metal foil on the surface of the to-be-connected material to finally form the transition belt by utilizing the advantage of ultrasonic solid phase connection, welding of dissimilar hard-to-weld materials is indirectly converted into welding of two kinds of materials with metallurgy dissolvability, and then the joint made of the dissimilar material with reliable performance is prepared.

The invention discloses an automatic welding device and an automatic welding method for a thin-shell car body. The device comprises a portal-frame welding robot, elevation-type head-tail frame positioners which is arranged on the side of the welding robot, a reversing frame which is installed between the positioners and a control mechanism which is used for controlling the welding robot and the positioners to work. The method comprises the following steps of back welding a weld seam which is more than 1mm, then filling the weld seam, placing the top/left side/bottom/head/right side/tail part of a car body on a horizontal position by rotating the elevation-type head-tail frame positioner, and welding the corresponding weld seam. The automatic welding device has the beneficial effects that automatic welding of different weld seams in different forms of different car types can be satisfied, the continuous welding of a majority of weld seams outside the car body can be realized, and the production efficiency is greatly improved; by adopting the welding method, not only can the quality of the weld seam be improved, but also the welding speed is high, the heat input is small, the weld deformation is small, and the subsequent assembling can be guaranteed.

The invention relates to a repeating stud welding torch, which comprises a torch casing, a rotary wheel mechanism, a first motor, a second motor and a driven shaft, wherein the interior of the driven shaft is coated with a radial magnetic steel or a radial electromagnet, and the top end of the driven shaft is provided with a groove which is matched with the diameter of a welding screw; the driven shaft is connected with the second motor, and the second motor drives the driven shaft to move; the front end of the torch casing is provided with a welding screw positioning mechanism; the rotary wheel mechanism comprises a rotary wheel, a shaft center of the rotary wheel is inserted with a core shaft, one end of the core shaft is connected with the first motor, the other end of the core shaft is rotationally connected with a rotary wheel seat, the periphery of the rotary wheel is provided with a plurality of concave openings at equal intervals, and each concave opening is matched with the diameter of each welding screw; the welding screws are sequentially inserted into the concave openings of the rotary wheel, the first motor drives the rotary wheel to rotate, the concave grooves are sequentially aligned with the groove of the driven shaft, the welding screws are absorbed to fall into the groove, and the driven shaft delivers the welding screws to the welding surface for welding. The welding torch has the advantages that the continuous welding is realized, the operation is convenient, and the welding efficiency is high.

The invention discloses a brush type seal robot welding system based on the ultrasonic detection technology. The brush type seal robot welding system based on the ultrasonic detection technology comprises an ultrasonic detection module. An ultrasonic analysis module is electrically connected with and communicates with the ultrasonic detection module and a robot control module. A laser welding module is fixedly connected with the robot control module. The ultrasonic analysis module scans a welding surface of a row wire root of a brush type seal through ultrasonic flaw detection equipment and sends wave signals obtained after scanning to the ultrasonic analysis module to carry out welding area positioning, welding seam tracking and welding penetration detection. Operation parameters are determined and sent to the robot control module. The robot control module works in cooperation with the laser welding module to complete welding operation. Welding area positioning, welding seam tracking and welding penetration monitoring are carried out through the ultrasonic detection technology, and automatic welding is realized in combination with a robot welding system, so that the welding quality is fully guaranteed, and meanwhile the welding work efficiency is improved.

The invention relates to the field of copper processing and specifically discloses welding equipment for copper processing. The welding equipment for copper processing comprises a platform, a base, lifting supporting legs, rolling wheels, a supporting base, a cross beam, an electric welding spray head and a control cabinet. An adjusting seat swinging around the midpoint is arranged at the left endof the platform. A rotary shaft perpendicular to the surface of the adjusting seat is rotatably connected to the upper surface of the adjusting seat. A rotary disk parallel to the adjustment seat iscoaxially fixed to the upper end of the rotary shaft. A plurality of detachable clamping and moving mechanisms are mounted on the upper surface of the rotary disk. Each clamping and moving mechanism comprises a mounting plate, fixing bolts, a movable seat and a sliding groove. The inclination angle of the electric welding spray head can be changed through the adjusting seat capable of swinging. The welding equipment for copper processing can conduct welding on different positions, especially weld seams in the vertical direction, can conduct continuous welding on workpieces mounted on the clamping and moving mechanisms, has no influence on the welding process during discharging and feeding and can save time and improve the production efficiency.

The invention belongs to the technical field of welding and particularly relates to an automatic active argon tungsten-arc welding method. In order to further improve the welding efficiency and welding quality of the current active argon tungsten-arc welding, the invention discloses a novel automatic active argon tungsten-arc welding method. According to the automatic active argon tungsten-arc welding method, a double-layer protective gas welding gun is adopted for carrying out argon tungsten-arc welding, wherein an inner layer gas passage transports inert gas, and an outer layer gas passage transports active agent powder and outer layer gas. With adoption of the automatic active argon tungsten-arc welding method, through changing the elements of the active agent or the variety of the outer layer gas, flow behavior of metal in a furnace hearth can be changed, the fusion depth and depth-to-width ratio of a weld joint are increased in a multiplied manner, the elements and the texture ofthe weld joint are controlled, and the mechanical property of the weld joint is improved to obtain the weld joint with high quality and high fusion depth; and in addition, automatic adding of the active agent can be realized during the welding process, so that automation of the welding operation is realized, and the welding efficiency is improved.

The invention discloses an explosive cladding method used for a transition base plate of a helicopter deck of a drilling platform. An explosive welding formation method of a composite plate includingan aluminum plate, a titanium plate and a steel plate comprises the following steps that first, the surface of the aluminum plate, the surface of the titanium plate and the surface of the steel plateare cleaned; second, the aluminum plate is used as a first layer in contact with a corrosive medium, the titanium plate is used as a second layer used for transition, and the steel plate is used as athird layer for bearing a load; third, a rock emulsion explosive 1# with the detonation velocity equal to or higher than 2000mm/s is continuously laid on the surface of the aluminum plate, a detonation groove with the width of 20mm is laid on the rock emulsion explosive 1#, and an ammonium oil explosive having the detonation velocity equal to or higher than 2600mm/s is continuously laid in the detonation groove; and fourth, an initiation point is arranged at the center of the aluminum plate, and a detonator is arranged on the initiation point. By adoption of the explosive cladding method, therequirements for the cladding joint rate, the shearing strength and the tensile strength of large-area aluminum plate, titanium plate and steel plate explosion for development of the well-drilling petroleum industry can be met.

The invention discloses a smokeless welding device for machine manufacturing, and relates to the technical field of machine manufacturing. The smokeless welding device comprises a workbench, and further comprises an adjusting mechanism, a clamping mechanism, a flue gas purifying mechanism and a welding table located in the middle of the upper end of the workbench, and four placing plates are arranged on the upper surface of the welding table in a rectangular shape. According to the welding device, three welding guns are used in cooperation with a rotary welding table, multiple welding positions on a machined object can be conveniently welded at a time, continuous welding of the machined object can be achieved, meanwhile, the clamping mechanism is designed in cooperation with the placing plates, the machined object can be conveniently clamped and fixed, and influence on welding effect due to movement or shaking of the machined object in welding process is avoided; and in addition, a protective shell is used in cooperation with the flue gas purifying mechanism, flue gas generated in the welding process is conveniently sucked into a purification cavity to be purified and then discharged, and the device is low in cost, high in welding effect and suitable for welding machining of large-batch objects.

The invention discloses a magazine type stud welding gun which comprises a welding gun body, a nail containing magazine, a nail rotating barrel and a nail feeding centre. The upper end of the nail rotating barrel is fixedly connected with a main shaft body. The lower end of the nail rotating barrel is fixedly connected with a welding nail chuck. An opening is formed on the inner side face of the nail rotating barrel. The head end of the nail containing magazine penetrates through the opening to be located in an inner cavity of the nail rotating barrel. A nail collection hole communicating withthe welding nail chuck is formed in the lower end of the nail rotating barrel. A nail outlet through hole is formed in the head end of the nail containing magazine, and the tail end of the nail feeding centre can penetrate through the main shaft body and the upper end of the nail rotating barrel to abut against the top of a welding gun located in the nail outlet through hole. The nail containingmagazine is fixedly connected with a tube through a connecting assembly. According to the magazine type stud welding gun, magazine type nail feeding is achieved, multiple welding nails can be loaded easily at a time, automatic nail feeding can be achieved, the pain caused by manual loading to welding workers can be avoided, continuous welding of a certain time duration can be achieved, and the manual welding efficiency is obviously improved.

The invention provides a 2M head automatic welding device and belongs to the technical field of welding. Through the 2M head automatic welding device provided by the invention, purely mechanical operation is adopted when a 2M head and a coaxial wire core are welded, and the welding precision is improved. The 2M head automatic welding device comprises a lifting mechanism, a welding mechanism, a tin feeding mechanism, a wire clamping mechanism, a guide rail mechanism, a 2M head fixing mechanism and a detection mechanism. According to the 2M head automatic welding device, the lifting mechanism, the welding mechanism, the tin feeding mechanism and the detection mechanism can be controlled automatically, the welding condition can be observed through a screen, of an inner camera, on a box, continuous welding and production line automatic production can be achieved, most manual labor is replaced, and the production efficiency is improved greatly. The labor intensity can be relieved, and the production efficiency is improved.

The invention relates to a continuous welding device for a laser welder of an impeller of a water pump. The continuous welding device for the laser welder of the impeller of the water pump comprises an automatic rotating plate and an impeller fixing clamp, wherein the impeller fixing clamp is arranged on the automatic rotating plate; a base is arranged on the lower portion of the automatic rotating plate; a motor is arranged in the middle of the base; a driving gear is arranged on a rotating shaft of the motor; a driven gear is fixed on the automatic rotating plate through screws; the driving gear and the driven gear are gripped with each other; the impeller fixing clamp comprises an impeller base fixing concave die and a blade fixing support; the blade fixing support consists of two concentric rings and an impeller fixing barrier strip welded to the middles of the rings; an ejector is arranged on the bottom of the automatic rotating plate and comprises a cylinder, a foot switch and an ejection lever; and the ejection lever is arranged on a piston of the cylinder. The blade fixing support is made of peek and is connected to the base through hinges. The continuous welding device for the laser welder of the impeller of the water pump is simple in structure, novel in design, convenient to operate and high in production efficiency, and has an automatic continuous welding function.

The invention belongs to the technical field of aerospace manufacturing, and particularly discloses an inner expansion positioning welding central spindle. The inner expansion positioning welding central spindle comprises a tension bar, an elastic expansion device and a limiting device. A lug is machined on the tension bar. The elastic expansion device is arranged outside the lug. The limiting device is fixedly arranged outside the middle part of the tension bar. The inner expansion positioning welding central spindle further comprises a rotary moving structure arranged at one side of the tension bar. The welding central spindle has an expansion and contraction function. In the welding process, the tension bar can be adjusted through an adjusting nut, radial-direction expansion of an inner bracing structure is realized so that a pipe and a joint can be fixed, and the pipe and the joint are located on the same axis; angular deformation of the pipe and the joint due to welding high temperatures is avoided, the phenomenon that the welding position of the joint is molten due to overtemperature in the welding process, strength is lowered and thus the welded joint is disengaged can be prevented, repeated arc starting and suppressing can be avoided, continuous welding of welding seams is achieved, and the welding percent of pass is increased.