15544results about "Tubular articles" patented technology

A cartridge for an aerosol-generating device is provided, the cartridge including: a housing containing an aerosol-forming substrate, the housing including upper and lower housing portions; a heater element including a fluid-permeable heater portion and an electrical contact portion, in which the heater portion and the electrical contact portion are integrally formed from a single heater sheet, and in which the heater portion is enclosed within the housing and positioned to heat the substrate, and the electrical contact portion extends outside the housing; and an outer housing in which the upper and the lower housing portions are held, the outer housing including a sleeve into which the upper and the lower housing portions are received such that the outer housing compresses the upper and the lower housing portions together to provide a seal therebetween. An aerosol-generating system, and a method of manufacturing a cartridge for an aerosol-generating device, are also provided.

The invention discloses a multi-mechanical-arm space-time synchronization control method for coiled pipe welding, and belongs to the technical field of automation control, and the method comprises the steps: in a primary laser and TIG hybrid welding execution stage, carrying out real-time data acquisition on a welding area of a workpiece, carrying out real-time deviation detection, and once real-time welding deviation is detected, carrying out time-space synchronization on the welding area of the workpiece; a local correction mechanism is triggered immediately, and deviation is prevented from being accumulated in the single welding process; after one-time welding is completed, the workpiece enters a transition area, global contour reconstruction is conducted on a welded section of the workpiece through three-dimensional scanning equipment, global deviation recognition is conducted, and unprocessed hysteresis deformation and accumulative errors are covered and corrected in real time; on the basis of the analysis result of the global deviation recognition, double correction is conducted on secondary welding, and cooperative control over space track correction and technological parameter adaptation is achieved; and after secondary welding is completed, the correction effect is evaluated through a double-layer evaluation mechanism, and the stability of the correction process is ensured.

The utility model discloses automatic petroleum pipeline welding equipment which comprises a bottom plate with a rectangular opening formed in the top. A follow-up block is connected into the rectangular opening in a sliding mode, a displacement annular plate is fixedly connected to the top of the follow-up block, an adjusting assembly for driving the follow-up block to move is arranged at the bottom of the bottom plate, and a U-shaped plate is arranged on the outer side of the displacement annular plate. A mounting frame is fixedly connected to one side of the U-shaped plate, a welding gun is arranged in the mounting frame, a walking assembly for driving the welding gun to revolve around the displacement annular plate is arranged on one side of the U-shaped plate, a stabilizing assembly is arranged between the interior of the U-shaped plate and the displacement annular plate, and fixed annular plates are fixedly connected to the two ends of the top of the bottom plate correspondingly. According to the automatic welding equipment for the petroleum pipeline, the U-shaped plate can revolve around the displacement rotating plate through cooperation of the middle roller and the idler wheels, necessary conditions are provided, meanwhile, the welding gun is driven by the walking assembly to revolve, and therefore the automatic welding effect is achieved.

The invention relates to the technical field of metal laser cutting, in particular to a laser cutting device for metal machining and a cutting method of the laser cutting device. Comprising a base, a vertical plate is fixedly connected to the base, a support is fixedly connected to the base, a limiting ring is fixedly connected to the support, and a plurality of positioning mechanisms are arranged on the limiting ring; a cutting mechanism is mounted on the inner wall of the outer gear ring; the cutting mechanism comprises a mounting block, a second electric push rod is fixedly connected to the mounting block, the output end of the second electric push rod is in transmission connection with a linkage plate, and a laser cutting head is mounted on the linkage plate. The metal pipe is clamped through the positioning mechanism, the cutting mechanism is driven to rotate through the outer gear ring, the laser cutting head conducts circumferential cutting on the metal pipe, the height of the laser cutting head is adjusted through the second electric push rod, and the cutting distance between the laser cutting head and the metal pipe reaches the best.

The invention relates to the technical field of pipeline welding seam identification and measurement, aims to solve the problem of uncontrollable data acquisition quality and the problems of robustness and precision of single-feature welding seam extraction, and provides a nuclear power station pipeline welding seam automatic identification and measurement method which comprises the following steps: accurately acquiring pipeline data under a self-adaptive front view posture; carrying out point cloud data processing on the collected data, and carrying out fitting of a pipeline model after segmenting out part of point cloud of the pipeline; after pipeline modeling is completed, a multi-dimensional data fusion method is adopted for weld joint recognition; and after the welding seam area is back projected back to the three-dimensional point cloud space, three-dimensional point cloud of the welding seam area is obtained, modeling is conducted on the welding seam area in combination with the pipeline model, and finally measurement data of the welding seam are obtained. According to the invention, automatic hand-eye calibration and multi-camera calibration of the guiding system can be realized without manual intervention.

The invention belongs to the technical field of laser processing equipment, and particularly relates to an automatic feeding and discharging pipe laser cutting machine which comprises a cutting table, a third groove plate is slidably connected to one side of the upper end face of the cutting table, a second groove plate is slidably connected to a sliding groove of the third groove plate, and a fourth groove plate is slidably connected to a sliding groove of the second groove plate. A lifting plate is slidably connected to the four sliding grooves of the groove plate, a rotating plate is rotatably arranged on one side of the lower end face of the lifting plate, and clamping plates are slidably connected to the two sides of the rotating plate. By means of the positioning and placing mechanism and the discharging auxiliary mechanism, when plum blossom pipes are cut at equal intervals, the grooves of the cut pipes slide down along the adjusting rods, the multiple sections of cut pipes are stacked in the box body in order, automatic discharging is achieved, the storage space of the box body is reasonably utilized, and the working efficiency is improved. And further transferring and machining of the pipes are facilitated.

The invention discloses an automatic welding system based on steel structure connection, and relates to the technical field of welding. The welding manipulator is arranged on the rack; two clamping mechanisms; two feeding mechanisms; a driving mechanism; the process that the rotating shaft rotates in the first direction has a discharging stroke, a steel pipe feeding stroke and a clamping stroke. The rotating shaft has a butt joint stroke and a reset stroke in the process of rotating in the second direction. Through rotation of the rotating shaft in the first direction, discharging of welded steel pipes is achieved, the feeding mechanism is driven to feed the to-be-welded steel pipes, the two clamping mechanisms clamp the to-be-welded steel pipes on the two sides correspondingly, and after clamping is completed, the two to-be-welded steel pipes are overturned by 180 degrees so that the two to-be-welded steel pipes can be located between the two clamping mechanisms; and the rotating shaft rotates in the second direction to drive the two clamping mechanisms to get close to each other, so that the two to-be-welded steel pipes are driven to get close to each other and abut against each other, and the welding action of the steel pipes is completed by the welding manipulator.

A method of additive manufacturing a part having integrated passages is provided. In one aspect, the method includes forming a part having a near net shape by moving a friction stir tool to deposit a filler material in a predetermined formation. The tool can include a rotating spindle having a channel configured to hold the filler material. The method can include machining the near net shape part to form a plurality of grooves extending into a surface of the part, the plurality of grooves sized and shaped to each receive a tube. The method can include placing a tube into each of the plurality of grooves and moving the tool across the surface of the part and depositing additional material configured to secure the tubes within the plurality of grooves. The method can include machining the additional material deposited over the tubes to a predetermined shape.

The invention discloses a pressure pipeline welding device, and relates to the technical field of pipeline welding, the pressure pipeline welding device comprises a machine base and a cross beam installed on one side of the machine base, a guide rod and a rotating rod are connected to the two sides of the top of the machine base in parallel, and a fixing base for providing pipeline alignment outer ring welding support is installed in the middle of the machine base. According to the pressure pipeline welding device, the inner welding gun is used for carrying out inner circumference root welding treatment on the inner groove of the abutted seam, and then the outer welding gun with the adjustable angle is used for carrying out outer circumference root welding and wave welding on the outer groove of the abutted seam in sequence; the traction assembly is used for pulling the pipeline clamped by one clamping mechanism to abut against the pipeline clamped by the other clamping mechanism, so that the abutted seam gap between the two to-be-welded pressure pipelines is reduced during welding, and it is guaranteed that abutting welding is achieved for inner and outer abutted seam grooves of the pressure pipelines during welding; and it is ensured that the welding device can achieve high-quality welding on the pressure pipeline.

The invention discloses a flange plate body welding device for flange production, and relates to the technical field of welding, the flange plate body welding device comprises a base, a welding arm, a flange plate body and a pipeline, the welding arm is arranged at the top of the base, a clamping device, an auxiliary device and a collecting device are arranged above the base, and the flange plate body is placed between fixing frames; the flange plate body is positioned and clamped through a round rod, a brake block, a rotating sleeve, a fixed sleeve and an auxiliary sleeve, through accurate clamping and positioning, the welding stability can be guaranteed, the problem of clamping shaking is avoided, therefore, the production efficiency is improved, the production effect is guaranteed, flanges with different radiuses can be clamped through the method, and the production efficiency is improved. The operation process is simplified, the working efficiency is improved, rotation of the round rod is limited through the limiting wheel and the clamping rod, namely, the round rod is prevented from rotating reversely, mistaken touch prevention of adjustment of the round rod is achieved in this way, and adjustment errors caused by mistaken touch after adjustment is completed are prevented.

The invention discloses a laser self-adaptive cutting method and system for a heavy special-shaped thickness steel pipe, and relates to the field of heavy special-shaped workpiece cutting technology application, and the laser self-adaptive cutting method comprises the steps that according to a collected surface image of a workpiece, the geometrical shape, surface defects and material texture features of the workpiece are recognized, and thickness distribution information of the workpiece is obtained; obtaining thickness data of different positions of the workpiece based on the thickness distribution information; based on the geometrical shape, the surface defect, the material texture feature and the thickness data, an optimal cutting path is obtained; and based on the optimal cutting path, a laser cutting task is executed, the laser power, the pulse frequency and the cutting speed are automatically adjusted according to the thickness change, and meanwhile, when vibration is detected, vibration is compensated through reverse excitation or dynamic damping adjustment. The key technical problems in heavy special-shaped workpiece cutting are solved, and the heavy special-shaped workpiece cutting device has wide industrial application prospects and extremely high popularization value.

The invention relates to the technical field of pipeline welding, in particular to pipeline welding equipment which comprises a workbench, a welding machine, a clamping mechanism for clamping and conveying a pipe fitting and a machining mechanism for machining the clamped pipe fitting before welding. According to the pipeline welding equipment, the sleeving rod is driven to rotate only through the forward and reverse rotation motor, the interior of a pipe fitting is clamped by arranging the fixing assembly, and the pipeline welding equipment adapts to pipe fittings with different pipe diameters; the cutting knife is moved to the pipeline welding position while the interior of the pipe fitting is supported, groove cutting can be conducted on the pipeline before welding, grinding and cutting can be conducted on grooves, with different depths, of the pipe fitting, and the cut grooves are made to have the optimal welding inclination all the time. The welding effect is better; and meanwhile, when the threaded disc 441 moves, the grinding piece gets close to the pipe fitting along a guide groove in the threaded disc, the outer wall of the pipe fitting is ground while the groove of the pipeline is ground, and the welding effect is further improved.

The invention provides an instant-penetration expanded polytetrafluoroethylene artificial blood vessel and a preparation method thereof. The preparation method comprises the following steps: mixing PTFE dispersion resin and lubricating oil with a first compression ratio, and curing to obtain a first PTFE mixture; mixing the PTFE dispersion resin with a second compression ratio and lubricating oil, and curing to obtain a second PTFE mixture, wherein the first compression ratio is higher than the second compression ratio; the first PTFE mixture is pre-pressed into a middle layer cylinder; pre-pressing the second PTFE mixture into an inner-layer cylinder and an outer-layer cylinder; the middle-layer cylinder is put into the outer-layer cylinder, the inner-layer cylinder is put into the middle-layer cylinder to obtain a composite cylinder, and the composite cylinder is subjected to blank pressing treatment to obtain a secondary blank pressing cylinder; and carrying out one-way stretching on the secondary compaction cylinder to obtain the instant-penetration expanded polytetrafluoroethylene artificial blood vessel which is not layered after being punctured.

The invention discloses large-diameter pipe fitting butt welding equipment, and relates to the technical field of butt welding equipment, and the large-diameter pipe fitting butt welding equipment comprises a composite mechanism. According to the butt welding equipment for the large-diameter pipe fittings, through the design of the composite mechanism, the fixing mechanism is arranged on the square frame base, the square frame base slides on the sliding rail block, so that the effect of adjusting the fixing range is achieved, the fixing mechanism is used for fixing the pipe fittings, follow-up butt welding is facilitated, material stability is kept, and the welding quality is prevented from being affected; the fixing mechanism is driven by the motor to control materials to rotate and be matched with the welding mechanism, so that the effect of constant-speed welding is achieved, manual operation is reduced, welding deviation is avoided, the butt welding efficiency is improved, the buffer mechanism wraps the materials, on one hand, light pollution generated by welding is reduced, on the other hand, welding fire light is avoided, and the welding quality is improved. And meanwhile, due to the damping and buffering effects, objects are prevented from falling off, object abrasion is reduced, and therefore normal operation of equipment is kept.

The invention discloses a forming method of a stress pressurizing section of an S-shaped air inlet channel in the technical field of airplanes. The forming method comprises the following steps: 1) taking out carbon fiber / epoxy resin prepreg; 2) cleaning the surface of the mold for later use; (3) blanking; (4) inner skin paving is conducted according to the layer paving sequence; 5) conveying the workpiece into an autoclave for curing, and unbagging after curing and cooling; (6) punching and then demolding; (7) the surface of the inner skin is polished and cleaned up; (8) foam is positioned, and cap-shaped ribs are laid; (9) conveying the workpiece into an autoclave for curing, and unbagging after curing and cooling; the method comprises the following steps of (1) preparing a digital model, (2) extracting the bottom surface of a honeycomb core according to the digital model, cutting the honeycomb core with the same size by using a blanking machine, and then cutting and chamfering, (11) positioning and pre-forming the honeycomb core, (12) paving an outer skin according to a layer paving sequence, and (13) feeding a workpiece into an autoclave for curing, and demolding after curing and cooling, thereby ensuring the internal quality, the molded surface and the mechanical property of the air inlet channel.

A method of additive manufacturing a part having integrated passages is provided. In one aspect, the method includes forming a part having a near net shape by moving a friction stir tool to deposit a filler material in a predetermined formation. The tool can include a rotating spindle having a channel configured to hold the filler material. The method can include machining the near net shape part to form a plurality of grooves extending into a surface of the part, the plurality of grooves sized and shaped to each receive a tube. The method can include placing a tube into each of the plurality of grooves and moving the tool across the surface of the part and depositing additional material configured to secure the tubes within the plurality of grooves. The method can include machining the additional material deposited over the tubes to a predetermined shape.

The invention relates to the field of welding, in particular to steel structure welding equipment with an automatic positioning function, which comprises a fixed ring I, an electric control guide rail, a cylinder, an electric push rod I, a sliding ring, a fixed ring II and the like, the first fixing ring is fixedly connected with an electric control guide rail. The electric control guide rail is rotationally connected with a cylinder through a sliding block. The cylinder is fixedly connected with a plurality of electric push rods I; telescopic parts of all the electric push rods are jointly and fixedly connected with a sliding ring; the sliding ring is rotationally connected with a second fixing ring. The two steel pipes in butt joint are fixed through the electric driving wheels on the first fixing ring and the second fixing ring, the first fixing ring, the cylinder and the second fixing ring are concentrically arranged, all the electric driving wheels jointly center and clamp the two steel pipes, and then the laser welding head is controlled to rotate for welding. During welding, deviation between the steel pipes can be effectively avoided, and the welding quality of butt joint of the steel pipes is improved.

The invention discloses a tubular pile welding device, and relates to the technical field of tubular pile welding. Comprising a guide rail, an automatic walking trolley, a lifting mechanism, a clamping mechanism and a welding gun, the automatic walking trolley is hung on the guide rail, the lifting mechanism is arranged in the automatic walking trolley, a vertically-arranged mounting plate is arranged on the lifting mechanism, the clamping mechanism is arranged at the bottom of the mounting plate, and the welding gun is mounted on the clamping mechanism and located in the radial direction of a tubular pile; a control panel is arranged on the automatic walking trolley, the control panel is electrically connected with the automatic walking trolley and the lifting mechanism, the supporting mechanism comprises a supporting rod and a steel ball roller, the supporting rod is parallel to the welding gun, one end of the supporting rod is installed at the lower end of the installation plate, and the steel ball roller is installed at the other end of the supporting rod. And a steel ball of the steel ball roller is propped against the upper-section pipe pile. By arranging the supporting mechanism, the welding gun is effectively prevented from slightly shaking towards the inner side, and the welding stability is improved.

The invention relates to the technical field of pipe welding, and discloses special welding equipment for an inner pipe connection type heat insulation oil casing, which comprises a welding table, a pipeline clamping mechanism is arranged at the top of the welding table, and the pipeline clamping mechanism comprises two rotating rings. During oil pipe machining, two oil pipes penetrate through the fixing rings to be connected, the electric telescopic rods drive the V-shaped clamping plates to clamp the oil pipes, and the driving motors enable the supporting rollers to support the oil pipes through the gears and the lead screws. The adjusting motor is matched with a related structure, so that the grinding wheel and the arc-shaped grinding piece are attached to oil pipes with different diameters. The grinding motor and the rotating motor work cooperatively to comprehensively grind the oil pipe, during welding, the oil pipe rotates at a constant speed to achieve uniform welding, and after welding, the grinding wheel and the arc-shaped grinding piece clean weld joints. In addition, in the polishing process of the equipment, a cleaning brush is driven to clean a polishing part through transmission of a gear and a chain, the polishing and welding quality is guaranteed, and the machining efficiency is improved.

The invention belongs to the technical field of welding equipment, and particularly relates to power pipeline welding equipment which comprises a workbench, bent pipe placing seats are symmetrically and rotatably mounted on the inner wall of the top of the workbench, connecting shafts are fixedly mounted at the bottoms of the bent pipe placing seats, and the outer walls of the connecting shafts are rotatably connected with the inner wall of the workbench; an adjusting gear is fixedly installed on the outer wall of the connecting shaft, and an automatic telescopic rod is arranged below the workbench. By means of the bent pipe placing base, the adjusting gear, the bent pipe fixing assembly and other structures, when a bent pipe and a straight pipe are welded, the bent pipe placing base rotates through cooperation of a toothed plate and the adjusting gear, then the angle of the bent pipe fixing assembly is adjusted, and the device is suitable for bent pipes of different angles; the bent pipe is fixed through the bent pipe fixing assembly, the effect of fixing the bent pipes at different angles is achieved, and the welding precision of the bent pipes and the straight pipes during welding is guaranteed.

The utility model belongs to the technical field of metal product cutting, and particularly relates to a cutting positioning device for metal products, which comprises a positioning worktable and a laser cutting machine on the positioning worktable, and a first chuck and a second chuck which are respectively positioned on two sides of the laser cutting machine are arranged on the upper side of the positioning worktable in a sliding manner. A lifting adjusting baffle is arranged on one side of the positioning workbench, rotating rings are rotationally connected to the inner side of the first chuck and the inner side of the second chuck correspondingly, multiple sets of fixing and sliding assemblies for fixing and sliding pipe fittings are arranged on one sides of the rotating rings, and driving assemblies for driving the rotating rings to rotate are arranged on the upper side of the first chuck and the upper side of the second chuck correspondingly. By means of the pipe cutting device, a pipe can be always in a clamped and fixed state in the whole cutting process, the situation that the last part of a fracture of the cut pipe is torn due to the fact that the cut pipe is not provided with a clamped or supported part is avoided, and the cutting quality of the pipe is improved. And the fracture is not flat.

The invention relates to the technical field of laser pipe cutting machining, and discloses a laser pipe cutting machine machining optimization method for small pipes. The method comprises the following steps: acquiring three-dimensional point cloud data of a to-be-processed pipe, and extracting a pipe axis direction vector and pipe wall thickness distribution data through geometric topology analysis; a dynamic machining coordinate system is established based on the axis direction vector, and the theoretical projection position of the laser focus in the coordinate system is calculated; material absorption characteristic parameters are matched according to the pipe wall thickness distribution data, and a laser power density gradient adjusting instruction is generated; monitoring the radial run-out amount in the rotating process of the pipe in real time, and generating a laser focus track compensation parameter in combination with a theoretical projection position; and finally, the laser power density gradient adjusting instruction and the focus track compensation parameters are fused to generate a cutting path control signal, and a laser cutting head is driven to complete machining. According to the method, the problems of insufficient precision and unstable quality in the machining process of small pipes are effectively solved, and the machining adaptability is improved.

The invention belongs to the technical field of plastic pipe forming and processing, and discloses a forming device for producing PP pipes, which is technically characterized by comprising a workbench, a vertical plate is fixedly mounted on the surface of the workbench, a bearing column is rotatably mounted on the surface of the vertical plate, and a bearing disc is fixedly mounted at one end of the bearing column; a plurality of groups of bearing pipes are rotatably mounted on the surface of the bearing disc, supporting pieces are arranged on the surfaces of the bearing pipes, a positioning mechanism is arranged on the surface of the vertical plate and comprises a rotating assembly, an inertia preventing assembly and an autorotation assembly, a cooling mechanism is arranged on the surface of the vertical plate, and the cooling mechanism comprises an outer spraying assembly and an inner spraying assembly. The problems that at present, only the outer side of a pipeline can be sprayed, the position of the PP pipe cannot be adjusted in the cooling process, and consequently the overall cooling forming efficiency of the PP pipe is low are solved.

The invention discloses a clamping-adjustable metal pipe welding device, which belongs to the technical field of pipe welding, and comprises a main body mechanism for butting and welding metal pipes, and two adjusting mechanisms for adjusting the welding direction of the metal pipes are arranged on the main body mechanism; and a clamping mechanism for clamping the metal pipe is arranged on the adjusting mechanism. The arranged main body mechanism can automatically weld four butt joint faces of two metal pipes, meanwhile, the metal pipes with different splicing angles can be welded, the automation degree is high, and continuity is good; the adjusting mechanism can adjust the butt joint angle of the metal pipes, so that the device can weld the metal pipes with different postures and connection angles, and the application range is wide; the clamping mechanism can adjust the clamping position, so that the device can clamp metal pipes of different lengths, meanwhile, square pipes or round pipes of different sizes can be clamped, and use is convenient.

The invention discloses a robot welding pipeline flange displacement special clamp, and relates to the technical field of ship manufacturing equipment, the clamp comprises a processing table, a welding mechanical arm, a placing mechanism, two groups of pipeline clamping mechanisms, two groups of flange fixing mechanisms, a traction mechanism, a rotating platform and three screw rod sliding tables; the placing mechanism is slidably mounted in the middle of the machining table through the rotating platform, and the two pipeline clamping mechanisms are symmetrically slidably mounted on the two sides of the placing mechanism and can synchronously move and clamp pipelines. The two flange fixing mechanisms are symmetrically arranged on the two sides of the containing mechanism and horizontally move through a lead screw sliding table. The traction mechanism is connected with the machining table through a lead screw sliding table and can lock / unlock the rotating platform and drive the containing mechanism to move. The welding mechanical arm is in linkage with the clamp and can conduct welding along the butt joint axis. Multi-degree-of-freedom posture adjustment of a pipeline and a flange can be achieved, a straight pipe and a 0-90-degree bent pipe are matched, it is guaranteed that welding is in a horizontal butt joint state all the time, and the welding quality and efficiency are improved.

The invention belongs to the technical field of welding clamping mechanisms, and particularly relates to a seamless steel pipe welding device for mechanical equipment machining, which comprises a machining platform, a sliding seat is slidably mounted on the machining platform, a supporting plate is arranged above the sliding seat, a lifting plate is arranged on the side wall of the supporting plate, and a sand plate slidably sleeves the lifting plate. A welding gun is further arranged on the machining platform. Two clamping mechanisms are arranged on the machining platform and used for clamping and fixing a steel pipe. A vertical grinding mechanism is arranged on the supporting plate. By arranging the vertical grinding mechanism and the transverse grinding mechanism, burrs on a steel pipe can be ground and removed in the horizontal direction and the vertical direction at the same time, and the seamless welding effect is improved; and by arranging the washing mechanism, water can be sucked in a reciprocating mode and sprayed to the sand plate, so that the burr removing work is smoother, and the ground burrs can be washed away.

The invention relates to the technical field of laser cutting, in particular to intelligent cutting equipment for aluminum alloy pipes, which comprises a machine table, a laser cutting head is arranged on the machine table through a lead screw transmission system, and a chuck for fixing the pipes is arranged on the machine table. The intelligent cutting equipment for the aluminum alloy pipe further comprises an in-pipe buffering mechanism, the in-pipe buffering mechanism comprises a bearing unit arranged in the pipe, a first supporting unit is arranged on the side, facing the chuck, of the bearing unit, a second supporting unit is arranged on the other side of the bearing unit, and a maintaining unit is arranged at the position, corresponding to the bearing unit, of the machine table. Through the high precision and high speed of the laser cutting technology and the ingenious design of the buffer mechanism in the pipe, the problem that slag adheres to the interior of the pipe to form adhering slag is effectively avoided, so that the cutting quality and the product percent of pass are improved, meanwhile, the automation degree and the intelligence degree of the equipment are high, manual intervention is reduced, and the cutting efficiency is remarkably improved.

The invention relates to the technical field of welding processes, in particular to a ship pipeline assembly welding process. The ship pipeline group welding equipment comprises a diameter adaptation assembly, the diameter adaptation assembly comprises a portal frame, two supporting rods, a roller, a transverse plate, a hydraulic adjusting assembly, a first hydraulic telescopic rod and a second hydraulic telescopic rod, the portal frame is fixedly installed at the top of a fixed supporting table, and the two supporting rods are rotationally connected to the side portion of the portal frame. The opposite sides of the two supporting rods are rotationally connected with a roller, two hydraulic adjusting assemblies which are symmetrically arranged are fixedly installed at the top of the portal frame, and a transverse plate is arranged at the bottoms of the hydraulic adjusting assemblies. According to the welding device, the circle center of the fixed ring can be located on the axis of the ship pipeline all the time, meanwhile, the extension length of the second hydraulic telescopic rod is adjusted, the second hydraulic telescopic rod can make contact with the ship pipeline, ship pipelines of different sizes are positioned, and stable welding is achieved after the reducer pipe and the ship pipeline are in butt joint.

A friction stir welding (FSW) tool includes a pin, a housing, and a shoulder. The pin is configured to extend through a joint line between edges of two work pieces. The pin rotates to perform a FSW process that welds the two work pieces together at the joint line. The housing is coupled to a distal end of the pin to enable rotation of the pin relative to the housing. The pin extends through a support surface of the housing. The support surface contacts respective inner surfaces of the work pieces during the FSW process. The shoulder surrounds the pin and is configured to be rotated during the FSW process. The shoulder contacts respective outer surfaces of the work pieces during the FSW process such that the work pieces are sandwiched between the shoulder and the support surface of the housing.

The invention provides a method for preparing a single-material VMPE recoverable hose through dynamic temperature control multi-layer co-extrusion. The method comprises the steps that infrared temperature measurement modules are installed on all sections of an extruder respectively to construct a dynamic temperature control system; feeding the pretreated raw materials into a corresponding extruder, and adjusting a heating device and a cooling device of a charging barrel of the extruder in real time according to a preset extrusion temperature allowable range through a dynamic temperature control system to obtain a plasticized melt; carrying out bonding treatment on the plasticized melt by utilizing an ultrasonic vibration composite technology to obtain a multi-layer reinforced melt; detecting the thickness of the pipe wall of the multi-layer reinforced melt through a hyperspectral imager and judging whether the thickness of the pipe wall is qualified or not; if not, pipe wall thickness deviation data are fed back to a dynamic temperature control system and an extruder control system to conduct linkage adjustment on extrusion parameters; and if the multi-layer reinforced melt is qualified, cooling shaping and fixed-length cutting treatment are conducted on the multi-layer reinforced melt, the finished recoverable hose is obtained, and the hose forming precision and the recovery performance are effectively improved.