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546 results about "Butt welding" patented technology
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Butt welding is a commonly used technique in welding that can either be automated or done by hand on steel pieces. Butt welding can also be done with brazing for copper pieces. It is used to attach two pieces of metal together such as pipe, framework in factories, and also flanges. A flange is something that either is internal or external that provided to strengthen a piece of material. In factories butt welding has shown how economical it can be for companies to use when building things out of metal. This is because if they wanted to make something out of metal without welding it together they would have to bend everything and reinforce the structure which costs more than welding the two pieces together. Butt welding is accomplished by heating up two pieces of metal, or applying pressure, or doing both of those. Penetration while welding the metal is important to maintain and with thin pieces of metal this is possible however, with thick pieces edge preparation may have to be done to prepare the metal. Full penetration butt welds are made when they are in the within the parent(bigger, stronger) metal. In butt welding the strongest welds will have the fewest imperfections. To achieve this the heat input is controlled, which decreases the size of the weld. In commercial welding when this is done it also reduces cost but in order to maintain the strength of the weld double butt welds will be used. In butt welding there are two types used to achieve the specific welds and then there are also a variety of joints considered to be butt joints.
Large-span corrugated steel web composite beam and construction method thereof
The invention provides a large-span corrugated steel web composite beam and a construction method thereof. The composite beam adopts section prefabrication and field assembly, and a composite abutted seam system is creatively adopted between beam sections. Butt welding is adopted for corrugated steel webs between beam sections, glue seams are adopted for concrete, and shear key teeth are matched, so that the self-alignment performance and the interface shear bearing capacity of a matching surface are improved; wave-shaped abutted seam notches are formed in the upper portions of the concrete top plate and the concrete bottom plate, concrete above abutted seams is a continuous pouring body, the waterproof performance is durable and reliable, and the long-term safety and the service life of the structure are effectively guaranteed under the condition that a waterproof leveling layer is not arranged. And in addition, the concrete in the notches is pre-pressed through the tensioning external prestressing procedure after the beam bodies are closed, the concrete at the abutted seams is further compacted, and super-strong durability is provided. A concrete waterproof layer does not need to be independently arranged on the main beam structure, the second-phase dead load borne by the main beam is effectively reduced while the work amount is reduced, and economic benefits are remarkable.
Owner:HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD +1
A pipe welding apparatus for self-positioning butt welding of a pipe
The application belongs to the technical field of welding, and particularly relates to a pipe welding device for butt welding of self-positioning pipes. The following scheme is proposed and comprises a welding table, a butt joint mechanism, two top fixing mechanisms and a welding mechanism. The butt joint mechanism is fixed on the welding table, the two top fixing mechanisms are arranged on the two sides of the butt joint mechanism, the welding mechanism is fixed on the top of the welding table, and the top of the welding table is provided with a side edge fixing mechanism. The side edge fixing mechanism comprises a transmission assembly, a support frame, a rotary table, a guide rod, a push plate, a support plate, a side edge support seat and a side edge butt joint plate. One end of the support frame is fixed on the side edge of the butt joint mechanism, and the rotary table is rotationally connected in the support frame. The application can effectively improve the butt joint effect of the pipes, so as to facilitate the welding of the two pipes, prevent the misalignment of the two pipes during butt joint due to the poor fixing effect of the pipes, and thus affect the welding of the pipes.
Owner:JILIN PROVINCE HAONING LASER WELDED PIPE TECH DEV CO LTD
Steel structure butt welding adjusting device
The invention discloses a steel structure butt welding adjusting device which comprises a supporting plate and supporting rods fixed to the four corners of the bottom of the supporting plate. A grinding part is arranged in the butt joint mechanism, in the butt joint process of the two steel structure bodies, the grinding part can make contact with the steel structure bodies along with continuous movement of a driving part, the grinding part comprises a coarse grinding plate, a fine grinding plate and a polishing plate, in the grinding process, a sliding plate slides on the top of a supporting plate along with a mounting plate driven by the driving part to move, and the grinding plate is in contact with the grinding part. The rough grinding plate firstly makes contact with the rotating steel structure main body and conducts comprehensive rough grinding on the end face of the steel structure main body through rotation of the steel structure main body, and due to the fact that a second gear at the bottom of a lead screw is meshed with a second rack at the bottom of a mounting shell, the lead screw can rotate, and therefore when a grinding piece moves to a certain degree, the grinding piece can rotate. And the rough grinding plate, the fine grinding plate and the polishing plate can sequentially treat the steel structure body and then move downwards into the second mounting frame.
Owner:YANGZHOU ZHONGTIAN MASCH MFG CO LTD
Full-coverage and full-process automatic production line of steel arch for tunnel supporting and technology thereof
PendingCN121491761AOther manufacturing equipments/toolsMetal working apparatusProduction lineButt welding
The full-coverage and full-process automatic production line comprises a feeding mechanism, a feeding cutting mechanism, a butt welding mechanism, a cold bending mechanism, a hole cutting mechanism, a transferring mechanism and a connecting plate welding mechanism, and the feeding cutting mechanism is used for cutting and chamfering the two ends of steel; the butt-joint welding mechanism is arranged between the feeding cutting mechanism and the cold bending mechanism and is used for performing butt-joint welding on the current steel and the remaining raw materials of the previous section; the cold bending mechanism carries out cold bending treatment on the steel; the hole cutting mechanism is arranged on a discharging path of the cold bending mechanism, and a guide pipe hole for loading a small guide pipe is formed in the steel; the fixed-length cutting mechanism is arranged at the output end of the hole cutting mechanism and is used for carrying out fixed-length cutting treatment; the transferring mechanism is arranged on the downstream portion of the fixed-length cutting mechanism and transfers the steel to a welding preset station, and the connecting plate welding mechanism conducts end connecting plate welding on the steel transferred in place. The automatic production line can meet the requirements of tunnel construction for steel hole sites, structural strength and batch production.
Owner:JIANGSU JINSANLI MACHINERY MFG
Bridge steel vertical position welding method
The invention provides a vertical position welding method for bridge steel. The vertical position welding method comprises the steps that 1, a groove is manufactured, specifically, the X-shaped groove without a truncated edge is manufactured in a vertical position mode through a flame cutting technology; and the groove is polished and derusted according to requirements. 2, preheating, wherein the bridge steel is preheated to 75 DEG C in an electric heating mode; and 3, welding, wherein solid welding wire argon-rich mixed gas shielded welding is adopted for vertical position welding. And 4, post-weld heat treatment is conducted, specifically, after welding is completed, post-heat treatment is conducted at 200-250 DEG C through a crawler-type heater, and slow cooling is conducted to the room temperature after heat preservation is conducted for 3 hours. By researching and developing a welding material and a welding process matched with the Q890qE high-strength bridge steel, the technical problem of quality of a Q890qE vertical position butt welding seam is solved. Welding forming is stable, efficiency is high, deformation is small, the appearance is good, strength and weather resistance are balanced, the service life is long, and economical efficiency and environment friendliness are both considered; the method is especially suitable for engineering scenes with strict requirements on strength, toughness and durability such as long-span bridges and alpine region bridges, and has remarkable economic advantages and social value.
Owner:CHINA RAILWAY BAOJI BRIDGE GROUP CO LTD +1
A method for laser wire filler welding of dot rings
ActiveCN117532161Bquality improvementPrevent sidewall melt defectsLaser beam welding apparatusButt weldingThick plate
This invention discloses a spot-and-ring laser filler wire welding method, comprising the following steps: cleaning the surface and bevel of the welding plate, and fixing the welding plate on a welding fixture; using a circular spot and an annular spot as a composite heat source for narrow-gap multi-layer filler wire welding of the welding plate; adjusting the defocusing amount, setting the diameter of the circular spot, and setting the diameter of the annular spot; setting the power of the circular spot and the power of the annular spot; setting the welding speed and the wire feeding speed; starting the welding system to perform welding, selecting the number of welding passes until the welding plate completes the butt welding. This invention uses a circular spot and an annular spot as a composite heat source for narrow-gap multi-layer filler wire welding. The circular spot is used to melt the filler wire to perform laser filler wire welding, and the annular spot is used to heat the sidewalls, preventing sidewall melting defects. This can avoid sidewall incomplete fusion defects during narrow-gap welding of thick plates.
Owner:SHANGHAI JIAOTONG UNIV
A hand butt welder
The application belongs to the technical field of welding equipment, and discloses a manual butt welding machine. The manual butt welding machine comprises a rack, a left electrode clamping device, a right electrode clamping device and a position adjusting mechanism; the left electrode clamping device, the right electrode clamping device and the position adjusting mechanism are arranged on the rack; the position adjusting mechanism comprises a sliding shaft and a hand crank assembly; the sliding shaft is arranged on the rack and slides along the left-right direction; the sliding shaft is connected with the right electrode clamping device; the hand crank assembly is arranged on the rack and rotates; the hand crank assembly is sleeved on the sliding shaft and is threadedly connected with the sliding shaft; the hand crank assembly can drive the sliding shaft to move leftward and rightward by rotating relative to the rack. The sliding shaft and the hand crank assembly form a screw nut pair, which is compact in structure, occupies a small space and is beneficial to reducing the size of the manual butt welding machine, so that the manual butt welding machine is more flexible in movement and use; on the other hand, the right electrode clamping device can be driven to move by rotating the hand crank assembly, which is convenient and labor-saving and is beneficial to reducing the labor intensity of the operator.
Owner:TJK MACHINERY (TIANJIN) CO LTD
Method for improving cooperative enhancement effect of laser and electric arc in attraction mode
The invention relates to the technical field of laser material processing, in particular to a method for improving the synergistic enhancement effect of laser and electric arc in an attraction mode. The method comprises the following steps that a workpiece to be welded is installed on a workbench; the back face of the to-be-welded workpiece is subjected to air exhaust treatment, so that a back attraction area is formed on the back face of the to-be-welded workpiece, and the position of the to-be-welded workpiece is adjusted to enable the back attraction area to be located on the lower side of the weld joint; laser and electric arc hybrid welding is carried out on the welding seam, meanwhile, the back attraction area guides electric arc airflow and laser-induced metal steam to directionally escape from the lower side of the butt welding seam, and the concentration ratio of electric arc plasma in the laser action area is improved under the action of attraction force. By the adoption of the method for improving the cooperative enhancement effect of the laser and the electric arc in an attraction mode, the impact effect on electric arc airflow when metal steam generated during laser welding is erupted is reduced, and the cooling effect of the metal steam on electric arc plasmas is reduced. Meanwhile, arc plasmas are attracted to key an orifice area, so that the energy of the arc is more concentrated, and the welding quality and stability are improved.
Owner:BEIJING UNIV OF TECH
Water tank of splitting solar water heater
InactiveCN101294748AEfficient use ofReduce heat transfer medium capacityFluid heatersSolar heat devicesSolar waterConfined water
The invention discloses a divided water tank device for an internal heat exchanger of a split type solar water heater. Butt welding is carried out by utilizing an end enclosure of a stainless steel confined water bank inner bag; the end enclosure is used as the heat exchanger to play the role of a water tank partition board; the water tank is divided into independent divided cavities; the heat exchanger is sealed with the inner bag of the water tank; the adjacent cavity bodies communicate with each other via draught tubes; the medium circulation and the medium supplement, namely unconfined running of the heat exchanging part, are carried out safely and reliably via an upper circulating pipe and a heat collecting part; and the device can fully improve heat energy transformation and reduce heat loss.
Owner:江苏元升太阳能集团有限公司
Laser welding equipment for automobile spraying tool production
The invention discloses laser welding equipment for automobile spraying tool production, and belongs to the technical field of laser welding equipment. The laser welding equipment for automobile spraying tool production comprises a welding device and a welding table fixedly installed on the surface of the welding device, two to-be-welded welding plates are placed on the surface of the welding table, a plurality of through-type transverse grooves are correspondingly formed in the surface of the welding table, and two through-type vertical grooves are correspondingly formed in the surface of the welding table; a penetrating type open groove is formed in the middle of the surface of the welding table. Compared with a traditional laser welding device, the laser welding equipment for automobile spraying tool production has the advantages that welding of two flat butt joint welding plates is achieved, welding of two welding plates forming an angle of 90 degrees is also achieved, the welding tool does not need to be replaced in the welding process, and the welding efficiency is improved. And therefore, the welding efficiency of the laser welding device on the automobile spraying tool is improved, and the functionality and practicability of the laser welding device are improved.
Owner:SHANGHAI QIHUAN MACHINERY EQUIPMENT CO LTD
High-strength weldable aluminum alloy cold pressure welding connection and heat treatment method
The invention discloses a high-strength weldable aluminum alloy cold pressure welding connection and heat treatment method. The method comprises the steps of material preparation, cold pressure welding connection, subsequent heat treatment and the like. According to the method, room-temperature cold-pressing butt welding and overall heat treatment are combined and applied to the 7000-series high-strength weldable aluminum alloy, heat input and component deformation in the connection stage are reduced, the welding coefficient of a connection joint can reach 89%-99%, and the method is remarkably superior to fusion welding and other solid-phase welding methods. And a melting solidification structure is not formed in the joint area, so that the structure state and the mechanical performance of the joint area are closer to those of the base material area through a subsequent process, and good overall consistency can be kept under the scenes of long material splicing, component extension and the like. Meanwhile, the process route has certain combination flexibility, and compared with the process only depending on single fusion welding or friction stir welding, the multiple cold pressure welding and heat treatment combination routes are provided to adapt to wires and bars of different specifications and different production rhythms.
Owner:QUZHOU UNIV +1
Stainless steel sheet welding deformation control method
PendingCN121912086AWelding/cutting auxillary devicesAuxillary welding devicesFillet weldButt welding
The invention belongs to the technical field of ship building and repairing, discloses a stainless steel sheet welding deformation control method, and solves the problem that welding deformation of a liquid collecting tray of a sheet stainless steel flat plate structure is difficult to control. Comprising the steps that a flat steel bracket is used in the transportation process, and oily paper is used for packaging; during storage and stacking, putting on a flat ground; during hoisting, an air suction cup or a hoisting plate steel clamp is used for carrying out single-piece hoisting; a hole is formed through laser cutting; before fillet weld welding, permanent toggle plates are assembled between adjacent steel plates, and positioned welding is carried out; before butt joint welding, permanent flat iron is additionally arranged on steel plates on the two sides of a welding seam on the back face of the butt joint welding seam, and staggered positioned welding is conducted on the flat iron and the steel plates; a positioning code plate stretching across the welding seam is additionally arranged on the front face of the butt welding seam; in the welding process, carbon dioxide gas shielded welding is adopted, and a centering and sectioning back welding method is adopted in the welding process of all welding seams. The method is easy and convenient to operate, wide in application range, high in efficiency and low in cost.
Owner:QINGDAO BEIHAI SHIPBUILDING HEAVY IND CO LTD
Diameter-adjustable pipeline welding inner supporting clamp
PendingCN121514811AWelding/cutting auxillary devicesAuxillary welding devicesButt weldingStructural engineering
The invention discloses a diameter-adjustable pipeline welding inner supporting clamp, and relates to the technical field of clamps, the diameter-adjustable pipeline welding inner supporting clamp comprises an expanding and supporting structure, the expanding and supporting structure comprises a guide shaft fixed at the top end of a supporting column and a plurality of expanding and supporting plates distributed in an annular structure, and a fixed sleeve is fixed at the upper end of the guide shaft; the outer wall of the guide shaft is slidably sleeved with a sliding sleeve located under the fixed sleeve, and the height of the sliding sleeve relative to the fixed sleeve is adjustable. One end of the link mechanism is connected with the side wall of the expanding plate, and the other end is simultaneously hinged with the radial outer walls of the fixed sleeve and the sliding sleeve. In order to solve the problems that a pipeline inner supporting clamp is single in applicable caliber, pipe walls are prone to being damaged, and accurate butt joint of pipelines with parts on the circumferential angle cannot be guaranteed, the inner supporting clamp with variable-diameter adjustment, flexible contact and the positioning identification function is provided, circle supporting and circumferential accurate positioning during butt welding of process waste gas pipelines with different diameters are achieved, and the butt welding quality of the process waste gas pipelines with different diameters is improved. And the angle alignment precision of a pipeline with accessories such as a pipe nozzle and a liquid outlet during welding is ensured.
Owner:DIANDUO ELECTROMECHANICAL ENG JIANGSU
A butt joint device for pipe welding
ActiveCN117984022BReduce alignment errorsWeld firmlyWelding/cutting auxillary devicesAuxillary welding devicesButt weldingButt joint
The application discloses a butt joint device for pipeline welding and belongs to the technical field of pipeline welding, which comprises a holding mechanism and a butt joint mechanism. The holding mechanism comprises two holding arc plates which are hingedly connected, and arc-shaped insertion grooves are formed in the holding arc plates. The butt joint mechanism comprises two butt joint outer plates which are hingedly connected, and a butt joint inner plate which is movably inserted into the butt joint outer plates and is slidably matched with the arc-shaped insertion grooves. Welding ports are formed in the butt joint outer plates in a penetrating manner. In the scheme, the holding mechanism and the butt joint mechanism are connected, so that the pipelines on both sides can be centrally positioned, the operation of assisting in the central positioning of the pipelines by additional workers is avoided, the central positioning error can be greatly reduced, the conditions such as incomplete welding and large butt joint ports in the pipeline welding are prevented, and the welding quality is improved. One person can operate the butt joint device, the labor cost and a large amount of time are saved, the construction efficiency is remarkably improved, the construction period is reduced, and the butt joint device has great popularization and application values.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD
Steel beam and steel column butt welding spark device
ActiveCN224254532UWelding/cutting auxillary devicesAuxillary welding devicesButt weldingStructural engineering
The utility model relates to the technical field of fire welding devices, and discloses a steel beam and steel column butt welding spark device which comprises two steel columns, a steel beam is arranged at the top ends of the two steel columns, and the steel columns and the steel beam are connected through two symmetrically-arranged connecting steel plates. The connecting steel plate is connected with the steel column and the steel beam through a plurality of fixing bolts which are inserted in a penetrating mode, fire receiving buckets are arranged at the bottoms of the connecting positions of the steel beam and the connecting steel plate, and spark receiving auxiliary assemblies are arranged at the top ends of the fire receiving buckets. The fire receiving bucket is arranged at the bottom of the welding position of the steel column and the steel beam, the fire receiving auxiliary assembly and the lifting hook are arranged on the fire receiving bucket, the lifting hook is welded to the welding operation bottom, and compared with a traditional fire receiving pan, the whole device is firmer and more durable, attractive in appearance, low in loss, environmentally friendly, safe, reliable and capable of saving labor. The device is suitable for large-scale popularization and application, low in manufacturing cost and high in economic benefit.
Owner:DATONG RUICHENG STEEL STRUCTURE CO LTD
Friction stir welding method and device, as well as workpiece comprising a butt weld seam
A method for friction stir welding along a butt joint weld line (40). A welding device (70) includes a probe assembly (90) including at least a first and second probe device (100a, 100b). A first and second part (31a, 31b) to be joined along the weld line (40) are provided, wherein the parts are each formed as a laminate (1; 1′) including at least a first layer (2a, 2b) formed with a first material and a second layer (5a, 5b) formed with a second material. The first and second materials have different material properties. The method friction stir welds of the parts using the welding device, wherein simultaneously the first probe device acts on the first layers and the second probe device acts on the second layers.
Owner:AIRBUS OPERATIONS GMBH +1
Shearing device for online trimming of two ends of butt weld of steel strip
The shearing device comprises a base, two shearing mechanisms, a feeding mechanism and a discharging mechanism, a track and a conveying line are arranged on the base, the two shearing mechanisms are installed on the track in a sliding mode, each shearing mechanism comprises a shearing frame, a driving cylinder and a cutter with an arc-shaped cutter head, and the driving cylinders are connected with the feeding mechanism and the discharging mechanism. The cutter is matched with a lower blade plate on the shearing frame to achieve shearing, an inclined discharging belt is arranged in the shearing frame to guide waste materials to a conveying line, a two-way lead screw driving unit is arranged in the base and drives the two shearing mechanisms to synchronously move in the same direction or back to back, and the feeding mechanism and the discharging mechanism are the same in structure and each comprise a carrier roller, a liftable pressing roller and a lifting driving assembly. And a steel belt'loop 'is formed through the lifting of the compression roller to realize storage and emptying, so that the continuous operation of the production line during shearing is ensured. The device realizes non-stop on-line shearing of two ends of a welding seam during butt joint of the steel strips, is high in automation degree and good in shearing quality, and remarkably improves the production efficiency.
Owner:HENAN TIANHONG METAL MATERIALS CO LTD
Box girder steel reinforcement framework closed looping welding device and method
PendingCN121972885AImprove stabilityHigh precisionWelding/cutting auxillary devicesAuxillary welding devicesButt weldingGear wheel
The invention relates to a box girder steel reinforcement framework closed ring forming welding device and method, the device comprises a steel reinforcement butt welding machine, the steel reinforcement butt welding machine comprises a movable clamping seat and a fixed clamping seat, and a butt welding area is arranged between the movable clamping seat and the fixed clamping seat; the positioning mechanism comprises a positioning frame, a driving cylinder, a rack, a side clamping seat, a front clamping seat and a rear clamping seat; a cylinder body of the driving cylinder is fixed on the positioning frame, a driving seat is arranged at the front end of the driving cylinder, racks are fixed on two sides of the driving seat, and the racks are adaptively positioned and slidably sleeved on the positioning frame; the racks on the two sides are meshed with corresponding gears, rotating shafts of the gears on the two sides are in transmission connection with left-hand thread screws extending towards the two sides, side clamping bases are arranged on the upper portions of the two sliding sleeves, and side clamping areas are formed. And the front clamping seat and the rear clamping seat correspond to each other and are respectively positioned on the outer side and the inner side of the butt welding area. A positioning tool is provided for the butt welding forming process of the rectangular steel reinforcement framework, and the consistency and reliability of welding quality are ensured through a positioning system and a clamping system.
Owner:COMMUNICATIONS CONSTRUCTION CO OF CSCEC 7TH DIVISION CORP LTD +3
A method of laser welding a hot-rolled substrate of an 800mpa grade cold rolled martensitic steel
The application discloses a kind of 800 MPa level cold-rolled martensitic steel hot-rolled substrate laser welding method, belongs to the technical field of welding.The application adopts laser butt welding process, the tail of front coil strip steel and the head of rear coil strip steel is formed loop respectively by welding machine pinch roll before and after welding machine, positioning and centering after being carried out to strip head and tail, using double cutting shear is cut to head and tail to ensure the quality of welding machine end surface.The application moves laser from operating side to transmission side by protection gas purging, cooperates with the front and rear heat devices that advance with laser and carries out butt welding, avoids the shortcomings of traditional laser welding high energy consumption and flash welding, reduces production cost and process complexity, improves production speed and weld quality, reaches the purpose that 800 MPa level cold-rolled martensitic steel hot-rolled substrate is welded.
Owner:ANGANG STEEL CO LTD
A system and method for assembling and welding large diameter, super-long aluminum alloy tunnel pipes
ActiveCN121467856BThe problem of ensuring that the length is difficult to guaranteeSolve the problem of difficult to guarantee lengthWelding/cutting auxillary devicesAuxillary welding devicesButt weldingPipe fitting
The application discloses a large-diameter super-long aluminum alloy tunnel pipe assembling and butt welding system and method, relates to the welding technical field, and can solve the problem that the existing welding method cannot ensure the welding efficiency and quality of the large-diameter super-long aluminum alloy tunnel pipe. The application embodiment discloses a large-diameter super-long aluminum alloy tunnel pipe assembling and butt welding method, which is used for welding a plurality of pipe fittings and two flanges into a whole pipe, and comprises the following steps: S1, simultaneously sleeving the end portions of two pipe fittings to be welded on the same inner support tool, and checking the edge deviation and coaxiality; S2, if the edge deviation and coaxiality meet the requirements, welding the pipe fittings to be welded on the inner support tool; and S3, repeating the single welding process composed of S1 and S2 n times, and performing at least one length correction before the whole pipe is welded.
Owner:CHENGDU RUNBO TECH CO LTD
Vertical position butt welding method for Q890qE and Q420qE bridge steel
PendingCN121423756AWelding/cutting auxillary devicesArc welding apparatusButt weldingMechanical property
The invention provides a Q890qE and Q420qE bridge steel vertical position butt welding method which comprises the following steps: step 1, polishing and derusting a single-side V-shaped joint groove of a steel plate according to standard requirements to expose metallic luster; step 2, preheating the welded joint by adopting an electric heating mode, wherein the preheating temperature is 75 + / -5 DEG C; step 3, pasting a ceramic liner on the reverse side of the groove; 4, solid welding wire CO2 gas shielded welding, single-face welding double-face forming and multi-layer and multi-pass welding modes are adopted till the groove is filled; 5, the ceramic liner on the back face of the weld joint is removed and cleaned up; and 6, post-heat treatment is conducted on a welded joint after welding, the post-heat temperature ranges from 200 DEG C to 250 DEG C, after heat preservation is conducted for 3 hours, a power source is turned off, and the welded joint is naturally cooled to the room temperature. The method is excellent in welding quality and mechanical property, efficient in welding and suitable for popularization.
Owner:CHINA RAILWAY BAOJI BRIDGE GROUP CO LTD +1
A slurry pipeline energy dissipation orifice, system, and method
The present application discloses a kind of slurry pipeline energy dissipation orifice plate, including flange assembly, wear-resistant piece, shell and winding gasket;Flange assembly includes two pieces of flange arranged axially symmetric, flange adopts neck butt welding convex surface type, neck is fixedly sealed with slurry pipeline, and the outer periphery of two flanges is connected by fastening connector;Shell and wear-resistant piece are both hollow annular structure, and the section of both is L type, and the middle annular structure with cavity is formed after being combined, and is clamped in the middle by two flanges, and the diameter of the cavity of two flanges is greater than the diameter of the cavity of middle annular structure;Shell has different thickness, aperture and chamfer, and can realize the close assembly with wear-resistant piece;The inner angle of shell is round angle;Winding gasket is circular, and is arranged on the connecting surface of flange and shell, wear-resistant piece;Also disclose corresponding method and system, through energy dissipation main road and energy dissipation bypass, the flexible selection of commonly used energy dissipation system and standby energy dissipation system can be guaranteed;Reduce blockage, improve the wear resistance and service life of system;Meet the stable operation of energy dissipation station under different working conditions.
Owner:CHINA MEDIA SCI & TECH GRP WUHAN DESIGN RES INST CO LTD +1
Operation method of double-sided synchronous welding device
An operation method of the double-face synchronous welding device comprises the steps that when the two stainless steel plates are in butt joint, the welding machine pressing beam is controlled to compact the first stainless steel plate for positioning; the feeding frame drives the second stainless steel plate to wait for welding corresponding to a welding seam of the first stainless steel plate and the second stainless steel plate; a linear guide rail and an upper welding head are arranged on one side above a welding machine pressing beam of the double-sided welding head frame; a linear guide rail and a lower welding head are arranged on one side below a joist of the double-sided welding head frame; the lower welding head and the upper welding head correspond to a welding seam; when the welding seam of the first stainless steel plate and the second stainless steel plate is welded, after the upper welding head and the lower welding head correspondingly weld two surfaces, the welding machines of the upper welding head and the lower welding head are started at the same time for butt welding to the other end of the welding seam to complete welding; according to the double-face synchronous welding device, the second stainless steel plate is clamped and conveyed through the feeding frame and the feeding pressing beam to correspond to the first stainless steel plate to form a welding seam, the upper welding head and the lower welding head are driven by the linear guide rail to conduct butt welding from the welding seam to the other end, energy is saved, consumption is reduced, and the production cost is reduced.
Owner:LUOYANG ENJIAYI LASER TECH CO LTD
Nuclear reactor core device and method of manufacturing the same
The application provides a nuclear reactor core device and a preparation method thereof, and belongs to the technical field of material welding. The preparation method of the nuclear reactor core device comprises the following steps: preparing a rib plate assembly, a W-shaped plate assembly and a C-shaped plate assembly; assembling multiple W-shaped plate assemblies and C-shaped plate assemblies into a whole circle and fixing the same by using inner and outer support tools, performing automatic welding by using a laser symmetrical welding method, and forming a W / C-shaped plate assembly; synchronously and alternately welding the W / C-shaped plate assembly on the inner and outer sides by using two automatic wire filling welding guns by using a double-sided layered symmetrical welding method, and realizing the connection of the W / C-shaped plate assembly with a bottom plate and a top plate; performing automatic butt welding of an outer half-ring plate by using laser welding and laser wire filling welding; and finally, welding internal fillet welds and performing nondestructive testing. By the cooperation of laser welding, automatic MIG welding, special tools and a symmetrical welding sequence, high-quality and high-efficiency automatic welding of the core containment vessel is realized, and welding deformation is effectively controlled.
Owner:SHANGHAI NO 1 MACHINE TOOL WORKS CO LTD
Aluminum alloy welding auxiliary device with precise butt joint fixing structure
This utility model discloses an aluminum alloy welding auxiliary device with a precise docking and fixing structure, relating to the field of aluminum alloy welding. It includes a base with a battery pack connected to its bottom. Three sets of fixing components are connected to the upper surface of the base. Buttons are connected to the sides of the fixing components. Two sliding rods are rotatably connected through a sliding groove, and the two sliding rods are symmetrically distributed left and right. The top of each sliding rod is connected to a fixing component. In this aluminum alloy welding auxiliary device with a precise docking and fixing structure, to improve the stability of the welded parts, the fixing plate needs to be replaced according to the type. The rotating threaded cylinder slides and contracts through the threaded groove, driving the rotating ring away from the protruding part of the convex block. After aligning the notch, the fixing plate is pulled, causing the insert block and convex block to slide and disassemble. After replacement, the welded parts are clamped by the bidirectional screws of the two sets of fixing components, improving clamping stability and thus improving the stability of the docking welding.
Owner:YANTAI CONGLIN PRECISION MACHINERY
Quick connecting structure for PHC (prestressed high-strength concrete) pipe pile cap
The utility model discloses a PHC pipe pile cap fast connecting structure which comprises a first PHC pipe pile, an upper pile cap is arranged below the first PHC pipe pile, a second PHC pipe pile is arranged on the side, away from the first PHC pipe pile, of the upper pile cap, a lower pile cap is arranged above the second PHC pipe pile, a plurality of connecting blocks arranged in a matrix mode are arranged on the side, close to the lower pile cap, of the upper pile cap, and the connecting blocks are connected with the first PHC pipe pile. The lower portion of the connecting block is fixedly connected with a clamping block, a plurality of guide grooves distributed in a matrix mode are formed in the upper end of the lower pile cap, through grooves are formed in one sides of the guide grooves, limiting grooves are formed in the sides, away from the guide grooves, of the through grooves, and clamping grooves are formed in the positions, below the guide grooves and the limiting grooves, of the lower pile cap. The connecting structure is simple, the PHC pipe pile construction efficiency is high, operation is convenient, welding of butt welding seams of conventional carbon dioxide arc welding is avoided, and pollution to the environment is reduced.
Owner:SHANGHAI JIANHAO ENG GUWEN CO LTD
Module diode junction box
The utility model discloses a module diode junction box, which comprises an anode junction box, a middle junction box and a cathode junction box, one side of the anode junction box is connected with an anode connector, and one side of the cathode junction box is connected with a cathode connector. Module diode conducting strips in the positive electrode junction box, the middle junction box and the negative electrode junction box are of copper sheet structures, the copper sheet structures are communicated with the cables through butt welding, one ends of the heat dissipation aluminum sheets are communicated with the copper sheet structures, and the other ends of the heat dissipation aluminum sheets are located on the outer sides of the junction boxes and communicated with external assemblies. According to the utility model, the welding positions of the cable and the module diode and the tin block position are overlapped up and down, the size is reduced, the heat dissipation aluminum sheet replaces the existing lengthened module diode copper sheet, the cost is reduced, the structural design of the aluminum sheet transfers the heat of the module diode to the assembly for more heat dissipation, the sufficient contact surface is ensured, and the service life of the module diode is prolonged. And better heat dissipation is facilitated.
Owner:ZERUN CO LTD
Supporting device for large-diameter long-distance pipeline crossing road sleeve
The utility model discloses a large-caliber long-distance pipeline crossing road sleeve supporting device which comprises two bottom frames, a supporting frame and first guide wheels, a connecting rod is arranged between the two bottom frames, the supporting frame is arranged at the top of the connecting rod, the top of the supporting frame is distributed in an arc-shaped groove shape, and the first guide wheels are arranged on the supporting frame. And a first guide wheel is arranged at the top of the supporting frame, a limiting plate is arranged above the right end of the bottom frame, an arc-shaped groove is formed in the middle of the bottom face of the limiting plate in a digging mode, and a second guide wheel is arranged in the arc-shaped groove. The supporting frame is arranged at the top of the connecting rod, a worker can conveniently conduct butt joint on pipelines, the situation that the pipelines roll and deviate is avoided, the limiting plate is arranged above the supporting frame, two pipe openings can be pressed and fixed, the worker can conveniently conduct butt welding on the pipelines, the working efficiency is improved, the construction difficulty is reduced, and the labor intensity of the worker is relieved. Usage is convenient and operation is simple.
Owner:LUOYANG CITY CONSTR RECONNAISSANCE DESIGN RES INST +2
A positioning structure for butt welding of circular tube columns in multi-size steel structures
This utility model relates to the field of steel structure welding technology and discloses a positioning structure suitable for butt welding of multi-size steel structure round pipe columns. It includes: an upper steel column with a lower steel column at its bottom; a fixing mechanism located on the outer ring of both the upper and lower steel columns for positioning; and an adjusting mechanism located between the fixing mechanisms for adjusting the distance between them. The adjusting mechanism includes a disassembly component and a telescopic component. The disassembly component is located inside the fixing mechanism for disassembling and installing the telescopic component, and the telescopic component is located between the disassembly components for adjusting the distance between the fixing mechanisms. The innovative design of the disassembly component significantly improves operational efficiency. A compression spring pushes a locking block into a slot, achieving rapid locking of the installation frame; while pressing the compression plate in the opposite direction easily releases the lock.
Owner:CHINA CONSTR THIRD BUREAU GRP (HAINAN) CO LTD +1