1605 results about "Spot welding" patented technology

The invention relates to the technical field of forge piece forming, in particular to a deep-cavity thin-wall support forge piece, a forging die and a forming method.The deep-cavity thin-wall support forge piece is characterized in that a heated round bar is subjected to roll forging to obtain a preformed blank, and oxide skin of the blank obtained after roll forging is removed; putting the prefabricated blank into a pre-forging cavity of a forming die, and performing pre-forging forming; after pre-forging is finished, the pre-forged piece is transferred into a precision forging cavity of the same forming die to be subjected to precision forging forming, and a bilaterally symmetrical precision forging piece is obtained; putting the bilaterally symmetrical precision forgings into a slicing die frame for trimming, and cutting off flashes; cutting the bilaterally symmetrical precision forgings subjected to cold shaping from the shunting bin through a cutting device, and separating the bilaterally symmetrical precision forgings into two independent single forgings; forming defects are eliminated, and the forging yield is improved to the level of stable mass production; the thickness tolerance of the functional surface of the product is ensured, the spot welding current stability and the welding strength are ensured, the assembly requirement is met, and the dependence on subsequent machining is reduced; the material cost is reduced and the mold life is prolonged.

The invention provides a portable modularized electroencephalogram signal acquisition device which comprises an acquisition device host, the acquisition device host comprises a top shell assembly, a bottom shell assembly, a plurality of electrode units, a plurality of electrode wires, a first plug connector and a second plug connector, the top shell assembly is detachably connected with the bottom shell assembly, the electrode units are installed on the bottom shell assembly, and the first plug connector and the second plug connector are detachably connected. The electrode units are correspondingly connected with the electrode wires respectively, the ends, away from the electrode units, of the electrode wires are connected with the first plug connector, the second plug connector is installed on the top shell assembly, and the first plug connector is detachably connected with the second plug connector. According to the device, electrical connection points of all electrode units are highly integrated in the first connector, traditional complex operation of multi-point welding or multi-connector connection is replaced by the plugging action of the first connector and the second connector, and an integrated quick connection structure is formed. The most complex internal circuit connection steps are fundamentally simplified, and the assembly efficiency and reliability are greatly improved.

The invention discloses a method for prolonging the service life of a resistance spot-welding electrode, a manufactured resistance spot-welding electrode cap and application, and the method comprises the following steps: taking a chromium-zirconium-copper electrode cap as a base body, grinding the working surface of the base body step by step by adopting abrasive paper, and then sequentially polishing, ultrasonically cleaning and drying to obtain a pretreated base body; performing vacuum zirconium permeation treatment on the pretreated matrix by adopting a permeation agent so as to form a zirconium-rich solid solution diffusion layer in the pretreated matrix, thereby obtaining the matrix subjected to zirconium permeation reinforcement; physical vapor deposition treatment is adopted, and a metal transition layer is deposited on the surface of the solid solution diffusion layer of the matrix subjected to zirconium permeation strengthening; wherein the metal transition layer is a Cr transition layer or a Ti transition layer; and a graphite target and titanium target co-sputtering mode is adopted, and a composite gradient functional layer is sputtered and deposited on the surface of the metal transition layer of the matrix treated in the step S3. The electrode service life of the method is improved by magnitude order, and the effect is extremely remarkable.

The invention discloses a robot spot welding controller, and relates to the technical field of robot spot welding control, and the robot spot welding controller comprises a sensing layer which is used for collecting multi-source heterogeneous data in a welding process in real time, and carrying out the preprocessing of the multi-source heterogeneous data to form a plurality of paths of data streams; the core processing unit is connected with the sensing layer, and is used for adaptively switching control modes of the welding tongs and outputting welding parameters according to the multi-source heterogeneous data in a mode of combining prediction and real-time adjustment, and issuing corresponding welding control instructions subjected to self-healing compensation optimization to each module; the decision-making layer interacts with the core processing unit and the sensing layer and is used for carrying out three-level quality monitoring based on the multi-source heterogeneous data and the welding result and feeding back a quality monitoring result to the core processing unit so as to optimize and obtain a welding control instruction; and the execution layer is connected with the core processing unit and used for executing the optimized welding control instruction. According to the method, by constructing a layered closed-loop intelligent control framework, the autonomous decision-making and optimizing capacity of the spot welding process is remarkably improved.

The utility model relates to the technical field of battery spot welding, in particular to a conveying device for spot welding of special-shaped batteries, which comprises a bedplate, the top of the bedplate is fixedly connected with an ash and dust removal mechanism, the ash and dust removal mechanism comprises a fixing frame, and the right side of the bottom of the bedplate is fixedly connected with an auxiliary feeding mechanism. The auxiliary feeding mechanism comprises a servo motor. Through the cooperation of the fixing frame, the concentration box, the fan, the baffle and the dust hood, the dust removal function is achieved, firstly, the first push rod is started to push the dust hood to move downwards, then the fan is started to operate to generate negative pressure suction force, dust on the surface of a battery is sucked by the dust hood and enters the concentration box through a pipeline, and then the dust is left in the box by the baffle. According to the mechanism, dust can be effectively removed, so that a battery attached with dust can be prevented from being directly subjected to spot welding processing, the influence on the welding effect is further prevented, and the normal power-on use of the subsequent battery is ensured.

The utility model relates to the field of cabinet body production, in particular to cabinet body top plate reinforcing rib welding equipment which comprises a welding mechanism used for connecting a top plate blank and a reinforcing rib and further comprises a clamping mechanism used for fixing the top plate blank and the reinforcing rib. When spot welding is carried out, a guide seat is pushed through a pushing arm to drive a clamping mechanism, a reinforcing rib and a top plate blank to move downwards, meanwhile, a second spring is used for driving the ends of two sliding frames to get close to each other, and then two fixing plates clamp the two sides of the top plate blank; meanwhile, the diagonal positions of the top plate blank are clamped and fixed through the two sets of clamping bases and the first springs, multiple positions of the top plate blank can be conveniently welded, the whole top plate blank can be horizontally pushed forwards in the process, and therefore the situation that reinforcing ribs deviate is avoided.

The utility model relates to the technical field of hoop seats and clamps, and discloses a seamed welding hoop seat and clamp which comprise a plate body and an arch-shaped seat body which are integrally formed, and the plate body and the arch-shaped seat body define a cylindrical cavity for a hoop belt and a bolt to penetrate through; a welding seam deviating from the center line of the plate body is arranged on the plate body; the plate body is provided with a welding spot used for being connected with the strap and deviating from the welding seam. The hoop comprises a hoop belt, a fastener and the hoop base, the fastener comprises a bolt and a spring arranged on the bolt in a sleeving mode, the bolt comprises a meshing tooth end, a screw rod and a screwing end, a first gasket is integrally formed at the screwing end, and a second gasket arranged on the bolt in a sleeving mode is arranged between the spring and the hoop base. According to the scheme, the hoop seat gap deviates from the center line of the bottom, when the hoop seat and the hoop belt are subjected to spot welding, a welding spot cannot be overlapped with a hoop seat welding seam, so that the cracking risk caused by stress increase due to the fact that the welding seam is welded again is effectively reduced, and the use reliability of the hoop seat and the hoop is improved; and the cost of the whole hoop seat and the seamless welding hoop seat of the steel pipe can be greatly reduced.

The utility model discloses a post-grouting anti-seepage device for an underground diaphragm wall, which comprises a grouting steel pipe welded at a corner of an I-shaped steel joint of the underground diaphragm wall. The grouting steel pipe comprises a seamless steel pipe, a grout outlet steel pipe and a sealing iron sheet, and the seamless steel pipe is a main body of the grouting steel pipe and forms a grouting main channel; the slurry outlet steel pipe is a branch pipe welded on the seamless steel pipe at a certain interval to form a slurry outlet; and the sealing iron sheet covers the outer side of the slurry outlet steel pipe through spot welding. The grouting steel pipes are pre-buried at the corners of the I-shaped steel, post-grouting is carried out after concrete pouring of the underground diaphragm wall is completed, and through mud joints which are not cleaned up in the I-shaped steel joints are blocked. The construction method is easy to operate, low in manufacturing cost, low in requirement for a construction site, high in reliability and good in grouting, water stopping, seepage preventing and leaking stoppage effects, the waterproofness of the I-shaped steel joint of the underground diaphragm wall can be effectively improved, and a powerful guarantee is provided for the safety of foundation pit construction.

The invention relates to the field of welding automation, and discloses an aluminum profile multi-process automatic welding method and system. The method includes: acquiring workpiece structure parameters to generate a weld recognition track and an initial welding track; scanning to obtain a weld space curve and calculating left-right deviation and height deviation; segmenting the welding seam based on the curve and the deviation, and judging full welding, intermittent welding, swing welding, spot welding and intersecting line welding to generate a welding process sequence; correcting the initial welding track according to the deviation, determining a welding parameter set by a welding data expert database, and issuing the welding parameter set to a digital arc welding power supply; and in the welding process, closed-loop correction and linkage compensation of welding parameters are carried out, and scanning data, correction, a process sequence, a parameter set and abnormal information are recorded. The system comprises a clamping and positioning module, a welding execution module, a welding power supply module, a welding seam scanning and tracking module and a welding control module.

The invention relates to the technical field of electric welding equipment, and discloses an automatic cleaning device for electrodes of a spot welding machine, which comprises a workbench and further comprises two groups of electrode structures which are symmetrically mounted on the workbench and can be mutually close to or far away from each other for adjustment, each electrode structure comprises an electrode stem and an electrode cap, and a welding area is formed between the two electrode caps; the cleaning structure is arranged on the electrode structure and comprises a scrap collecting plate which is arranged below the electrode rod and can be adjusted to be close to or far away from the axis of the electrode rod, a scraper is installed on the inner wall of the scrap collecting plate, and the tangent plane track of the scraper is the same as that of the electrode cap. The cleaning structure and the electrode rod are integrated, and the time delay assembly is arranged, so that cleaning is started only in a non-spot-welding state, in-situ disassembly-free finishing of the electrode cap is achieved, and the effects that the normal welding rhythm is not affected, manual grinding and frequent electrode replacement are thoroughly omitted, and the continuous operation rate of a production line is remarkably improved are achieved.

The rib plate feeding device of the pipe section flange rib plate welding machine comprises a strip-shaped groove which can be adjusted and fixed in the extending direction of a strip-shaped base, the extending direction of the strip-shaped groove is perpendicular to the strip-shaped base, the top of the strip-shaped groove is open, and a rib plate containing frame is placed at the top of the strip-shaped groove; the rib plate containing frame moves in the extending direction of the strip-shaped groove through a transmission wheel arranged on the edge of the top of the strip-shaped groove, a rib plate feeding motor in transmission connection with the transmission wheel is fixedly arranged in the strip-shaped groove, and a feeding groove moving up and down is formed in the position, corresponding to the position under the straight line where the axis of the conical connector A is located, in the range of the strip-shaped groove. According to the rib plate feeding device of the pipe section flange rib plate welding machine, through the vertical groove structure arranged on the rib plate feeding device and the correspondingly matched rib plate placing frame, a rib plate to be welded, which is placed on the rib plate placing frame in advance, can be automatically fed to the bottom of a flange joint of a pipe section; and automatic spot welding fixation of the spot welding robot is facilitated.

The invention discloses a welding wire for delta-TRIP steel and a tailored blank laser welding method, and belongs to the technical field of tailored blank laser welding. The welding wire comprises, by mass, 0.08%-0.2% of C, 0.4%-1.2% of Si, 0.8%-1.8% of Mn, 3%-10% of modified titanium powder, smaller than or equal to 0.005% of S, smaller than or equal to 0.02% of P and the balance Fe and inevitable impurities. Wherein the titanium element is added in the form of modified titanium powder, and the modified titanium powder is prepared by mixing titanium powder, rare earth oxide and boron powder and then performing high-energy ball milling. According to the tailored blank laser welding method, annular light spot welding is adopted, a composite induction preheating-post-heating process is matched, and compressed air is used as shielding gas. According to the method, the volume fraction of the Ti (C, N) strengthening phase in the weld joint can be remarkably increased to 5.5%-7.5%, the weld joint structure is effectively refined, generation of thick columnar crystal delta-ferrite is inhibited, and a welded joint has excellent strength, plasticity and forming performance.

The invention discloses a surface-mounted tubular fuse structure and a preparation method thereof, and belongs to the technical field of overcurrent protection electronic components. The fuse structure comprises an insulating tube, a fuse body, an arc extinguishing body, an inner copper cap, an outer copper cap and a sealing colloid. The fuse body is arranged in the insulating tube body, the arc extinguishing body is filled in the insulating tube body and wraps the fuse body, the inner copper cap and the outer copper cap form a combined electrode cap, the sealing colloid is filled between the end part of the insulating tube body and a circular inner cap of the combined electrode cap, and the circular inner copper cap and the end part of the insulating tube body realize preliminary airtight packaging through welding or interference fit. And the sealing colloid is combined for secondary reinforced sealing, and the square outer copper cap provides a flat surface-mounted welding surface. The preparation method comprises the process steps of inner copper cap pressing, threading and spot welding, arc extinguishing material potting, outer copper cap assembling, sealant potting and the like. The problems that a traditional tubular fuse is large in installation space, has reliability hidden danger and is limited in high breaking capacity are solved. The fuse is widely applied to the technical field of tubular fuses.

The present invention provides a high-strength steel sheet having excellent hydrogen embrittlement resistance after spot welding, due to a novel configuration. The steel sheet of the present invention has a tensile strength of 1470 MPa or more, and the aspect ratio Str of the roughness of at least one surface is 0.

The invention discloses an exhaust silencing pipe multi-pipe welding device and method, and belongs to the technical field of multi-pipe welding. The exhaust silencing pipe multi-pipe welding device comprises a machine table, a component fixing mechanism, an equidistant grounding mechanism, a mechanical arm and a welding assembly; mechanical arms are fixedly mounted on the spot welding station and the ring welding station on the machine table respectively; a welding assembly is mounted at the moving end of the mechanical arm; a rotating table driven by the electric index plate is rotationally mounted on the machine table; a plurality of component fixing mechanisms are mounted on the rotating table; an equidistant grounding mechanism is mounted on the lower side of the component fixing mechanism; the component fixing mechanism comprises a supporting assembly, a pipeline positioning assembly and a partition plate positioning assembly. The equidistant grounding mechanism comprises an equidistant grounding assembly, a follow-up adjusting grounding assembly and a driving assembly. By means of the mode, when a plurality of pipelines are continuously welded to the partition plate, different positions of a welding seam are consistent with a backflow circuit path formed between the follow-up adjusting grounding assembly and the equidistant grounding assembly, and therefore current changes caused by different backflow circuit paths are avoided.

The utility model discloses a detachable supporting assembly for a giant circular ring. The detachable supporting assembly comprises a lining plate, a first supporting rod, a second supporting rod and an adapter plate. The plurality of lining plates are uniformly arranged in a circle along the inner wall of the ring and are fixed with the inner wall of the ring by spot welding, the adapter plate is located at the center of the ring, the length of the two first support rods is slightly smaller than the diameter of the ring, two ends are connected with the lining plates through bolts, and the middle is connected with the adapter plate through bolts; the second inner supporting rods are arranged in the radial direction, the outer ends of the second inner supporting rods are connected with the inner lining plate through bolts, and the inner ends of the second inner supporting rods are connected with the adapter plate through bolts. The inner supporting assembly is simple in structure and convenient to construct, on the premise that stable supporting is guaranteed, mounting and dismounting difficulty is lowered, mounting time is shortened, labor cost is saved, meanwhile, welding workload is reduced, worker fatigue and welding quality reduction caused by long-time welding are avoided, the inner supporting assembly can be positioned and corrected through bolts, and the production efficiency is improved. Compared with an all-welded structure, stress concentration can be effectively reduced.

The utility model discloses a semi-automatic straight pipe double-end spot welding machine, which relates to the technical field of spot welding machines and comprises a base, and a left terminal piece feeding mechanism and a right terminal piece feeding mechanism are arranged on two sides of the top of the base. A fixing piece direction rotating mechanism, a spot welding mechanism, a clamping mechanism, a two-color buzzer, a PLC microcomputer controller and a discharging mechanism are arranged in the center of the top of the base. According to the double-end spot welding machine, the servo motor power transmission component, the up-down air cylinder, the push-out air cylinder, the parallel opening and closing finger air cylinder, the fixed piece direction rotating component and the like are integrated, and automatic operation of a series of steps including heating pipe feeding, clamping, transferring, rotary centering, terminal piece processing, pushing, welding and the like is achieved. Compared with the prior art, manual participation links are greatly reduced, the requirement for the technical level of operators is lowered, basic operation can be conducted without technicians or operators, the range of the operators is expanded, and the training cost and the time cost are reduced.

The invention provides a brushless motor stator spot welding device. The brushless motor stator spot welding device comprises a machine table, a driving assembly, an execution assembly, a spot welding assembly, a control assembly and an identification assembly. The driving assembly and the spot welding assembly are both installed on the machine table, the execution assembly is arranged on the machine table in a sliding mode and connected with the driving assembly, and the driving assembly drives the execution assembly to reciprocate in the direction close to or away from the spot welding assembly. A bearing table is arranged at one end of the execution assembly and is used for bearing the stator and driving the stator to rotate; the recognition assembly is arranged on one side of the execution assembly, the recognition range covers the bearing table, and stator wire end information can be collected and recognition signals can be output; the spot welding assembly is used for performing spot welding on the stator wire end on the bearing table. The control assembly is in communication connection with the recognition assembly, the driving assembly and the spot welding assembly and can receive and process the recognition signals to judge whether the stator wire heads are single wire heads or double wire heads, matched welding parameters are called based on results, and then the spot welding assembly is controlled to complete spot welding.

The application relates to the technical field of relays, and discloses a relay copper column and copper sheet spot welding device and a spot welding method thereof, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a fixed plate, the end, away from the bottom plate, of the fixed plate is fixedly connected with a support plate, the surface of the support plate is fixedly connected with a cylinder frame, the surface of the cylinder frame is rotationally connected with a rotating shaft, the surface of the rotating shaft is transmissionally connected with a belt, the surface of the belt is fixedly connected with a rubber plate, and the surface of the support plate is provided with a through hole. After the copper column is placed in the inside of the limiting frame, the belt limits the copper column through the rubber plate, so that the inclination of the copper column during spot welding is avoided; at this time, the bottom of the copper column will be in contact with the feeding component, the feeding component is used for pushing the copper column to move in the inside of the limiting frame; at this time, the copper column pushes the belt to rotate on the surface of the rotating shaft through the rubber plate; when the copper column moves above the supporting component, the copper column will slide to the top of the supporting component; and the copper sheet is placed on the top of the supporting component.

The application discloses a method for embedding heat-dissipating copper columns in a microwave printed circuit board, and relates to the technical field of embedding heat-dissipating copper columns in a microwave printed circuit board. The method comprises the following steps: S1, taking out a microwave printed circuit board; S2, taking out two heat-dissipating copper columns B; S3, supporting the two heat-dissipating copper columns B on the tabletop of a table; S4, making the two heat-dissipating copper columns B respectively in interference fit with two through holes of the microwave printed circuit board; S5, taking out a strip-shaped copper plate; S6, taking out a strip-shaped copper plate and a strip-shaped solidification sheet; S7, fixing the strip-shaped copper plate and the microwave printed circuit board together; S8, turning up the left and right end portions of the strip-shaped copper plate; S9, operating a spot welding machine so that the spot welding head on the spot welding machine touches the top surface of the turned-up portion; and S10, taking away the microwave printed circuit board embedded with the two heat-dissipating copper columns B from the table. The method has the advantages that the heat-dissipating efficiency of the microwave printed circuit board is improved, and the embedding quality of the heat-dissipating copper columns B is greatly improved.

The utility model discloses a butt-joint fixing tool for butt-joint pipe seams. The butt-joint fixing tool comprises a plurality of fixing strips, a first binding band and a second binding band. The plurality of fixing strips are arranged at the butt joint seam formed between the two butt joint pipes and are uniformly arranged at intervals in the circumferential direction of the butt joint pipes; the fixing strip is provided with a first fixing part, a second fixing part and a connecting part for connecting the first fixing part and the second fixing part, the first fixing part and the second fixing part are arranged on the outer side surfaces of the butt joint pipes on the two sides respectively, and an over-welding hole opposite to the butt joint seam is formed in the connecting part; the first fixing part is provided with a first fixing band hole used for a first binding band to penetrate through, and the second fixing part is provided with a second fixing band hole used for a second binding band to penetrate through. The butt-joint pipe butt-joint device can reduce damage to butt-joint pipe base metal and human eyes, omits polishing work of removing stacking plates or spot welding during welding, improves butt-joint efficiency and assembly quality of butt-joint pipes, and is simple to operate, wide in application range and easy to assemble, disassemble and maintain.

The invention discloses a method for repairing defects on a polished surface of a femoral condyle test mold. The method comprises the following steps: detecting the polished surface of the femoral condyle test mold and marking the defects; the femoral condyle test mold is fixed to a special clamp, a rotary grinding machine is adopted to be matched with a micro pneumatic rotating head, fixed-point drilling is conducted on a defect area, and micro pits are formed after digging-out; welding wires are fused through pulse laser spot welding equipment, the micro pits are filled in a layered mode, and filling bosses are formed; a high-speed electric grinding machine provided with a red nylon polishing wheel is used for conducting layered grinding on the filling boss; and a wool wheel is sequentially matched with metal polishing paste to polish the repaired area, the smoothness is gradually improved till the area is consistent with the original polished surface in glossiness and roughness, finally, the surface of the test mold is cleaned, and the residual polishing agent and impurities are removed. According to the method, the process of defect marking mechanical excavation, laser filling welding, layering, grinding and progressive polishing is adopted, localization treatment is conducted on the defects, the overall size change is avoided, and therefore accurate repairing of the defects is achieved.

Laser spot welding process for overlapping metal plates (11, 12, 13), comprising in sequence: a first step (21) of beginning to irradiate the overlapping metal plates (11, 12, 13) with a laser (L1) having a first irradiation diameter (φ1) in a state in which an optical axis of the laser is set to a predetermined area of ​​the metal plates (11, 12, 13) to heat the metal plates (11, 12, 13) to melt them;and a second step (22) to continuously irradiate the metal plates (11, 12, 13) with the laser (L1-L2) after the first step (21), with a gradual or stepwise increase of an irradiation diameter of the laser from the first irradiation diameter (φ1) to a second irradiation diameter (φ2) in the state in which the optical axis of the laser is set to the predetermined surface, in order to expand a molten area (W1-W2) of the metal plates (11, 12, 13), wherein the increase of the irradiation diameter (φ1-φ2) is provided by increasing a defocusing component (d1-d2) of the laser.

The current collecting plate comprises a positive current collecting plate, the positive current collecting plate comprises a circular pole lug welding area, a current collecting handle and a circular end cover welding area, a central liquid injection through hole and a first auxiliary hole are formed in the end face of the circular pole lug welding area, and a second auxiliary hole is formed in the current collecting handle. According to the utility model, the plurality of first auxiliary holes are distributed in the circular tab welding area and are uniformly distributed in the internal space of the battery, so that the injection and infiltration of electrolyte and the discharge of gas in the battery are facilitated, the distribution positions of the first auxiliary holes do not occupy the functional area of the circular tab welding area, and the first auxiliary holes can be arranged according to a welding mode; and welding processes such as spot welding, wire welding or ring welding are met. And the second auxiliary hole is formed in the current collecting handle, so that the over-current area transmitted from the battery pole group to the end cover assembly can be reduced, and the current collecting handle can be quickly fused and the current output can be cut off when the battery is in short circuit or thermal runaway.

The invention provides a vehicle with a welded bus bar connector. In a high voltage vehicle electronic system, an electronic component having a tab is welded to a bus bar using pulsed laser welding. Each tab is welded to the bus bar by an array of welds. Each spot welding portion includes an inner region formed in a pinhole mode by laser welding and an outer region formed in a conduction mode by laser welding. The density of energy applied to the inner region is between ten and twenty times higher than the density of energy applied to the outer region.

The invention relates to the related technical field of loudspeaker basin stand spot welding, and discloses a machining device for loudspeaker basin stand production and a technological method.The device comprises a workbench, a spot welding robot and an operation table are arranged on the upper side of the workbench, and a tool assembly is arranged on the operation table; according to the invention, the inner wall of the magnetic conductive plate can be clamped and fixed by using the radial outer side movement of the four second clamping blocks, and the inner wall of the positioning hole in the basin stand can be clamped and fixed by using the radial outer side movement of the two first pushing blocks, so that the circle center of the magnetic conductive plate and the circle center of the basin stand can be aligned up and down; the magnetic conductive plate and the basin stand are positioned and clamped; and finally, the movable pipe moves downwards to drive the two first clamping blocks to move downwards, so that the basin stand moves downwards to be in full contact with the magnetic conductive plate, and a gap is prevented from being formed in the connecting part of the magnetic conductive plate and the basin stand.

The invention discloses a three-spot welding dynamic imaging stabilization detection method based on motion compensation modeling, and relates to the technical field of photovoltaic energy monitoring, and the method comprises the following steps: obtaining an acoustic vibration signal, a picture time marking signal and a jig lifting displacement signal of the whole jacking process of a compressor shell, carrying out the time synchronization and feature fusion of the obtained signals, and carrying out the feature fusion of the obtained signals; and generating a resonance distribution band for constructing a dynamic reference model for subsequent time sequence analysis. According to the invention, through multi-source signal synchronous modeling and light machine closed-loop regulation and control, millisecond-level consistency of a jacking action and an imaging process is realized. Exposure and vibration phases are accurately controlled through staggered anchor points, a drift sketch, a baseline ring and an alignment key, pixel drift and brightness fluctuation are remarkably reduced, the detection false alarm rate and the detection omission rate are reduced by 73% and 67% respectively, and high precision and high stability of three-spot welding dynamic detection are achieved.

This invention relates to a method for simultaneously producing single-sided and double-sided stainless steel composite plates, comprising steps such as billet preparation, billet processing, application of release agent, spot welding assembly of composite materials, surface treatment of the composite billet, alignment of the assembly, vacuum electron beam welding, defect repair welding, heating of the composite billet, and rolling of the composite billet. This invention, through vacuum welding and heated rolling of double-layer sandwich plates, enables the simultaneous production of both single-sided and double-sided stainless steel composite plates from a single set of composite billets. The rolled stainless steel composite plates exhibit satisfactory flaw detection results, with performance far exceeding user requirements. Furthermore, it allows for mass production and industrialization, providing strong technical support for the stable production of single-sided / double-sided stainless steel composite plates.

The invention belongs to the technical field of high-temperature sealing connection, and provides a preparation method of a double-layer metal sealing connecting pipe, which comprises the following steps: selecting two metal materials with complementary high-temperature-resistant high-strength performance and corrosion-resistant performance, respectively preparing an outer-layer pipe and an inner-layer pipe, coaxially sleeving the inner-layer pipe with the outer-layer pipe, and sealing the inner-layer pipe with the outer-layer pipe; the gap of the double-layer metal pipe is controllable, and the coaxiality of the double-layer metal pipe meets the assembly requirement; the middle of the double-layer metal pipe serves as a welding section, a plurality of resistance welding spots are arranged on the welding section in the circumferential direction, and the outer-layer pipe and the inner-layer pipe are fixedly connected into a whole through a discrete resistance spot welding technology; and the two ends of the double-layer metal pipe subjected to spot welding are subjected to spinning forming, an expansion opening structure with fillet transition is obtained, the sealing performance of the ends is enhanced, and the double-layer metal sealing connecting pipe is obtained. By means of the method, the problems that a traditional single-layer sealing pipe is low in reliability and single in material performance can be solved.

The invention relates to the technical field of welding clamps, and provides a three-section type motor shaft welding positioning clamp which comprises a clamp rack, a clamping jaw assembly and a preheating assembly, a sliding rail is arranged on the clamp rack, a first sliding frame and a second sliding frame are installed on the sliding rail in a sliding mode, and the first sliding frame is located on the upper portion of the second sliding frame. The motor shaft body comprises a first part, a second part and a third part, the clamping jaw assembly comprises a top clamping assembly, a middle clamping assembly and a bottom clamping assembly, the top clamping assembly is installed on the upper bearing frame, the middle clamping assembly is installed on the second sliding frame, and the bottom clamping assembly is installed on the lower bracket. Preheating assemblies are installed in the upper bearing frame and the lower bearing frame correspondingly, and the technical problem that in the prior art, when a three-section type motor shaft is welded, spot welding positioning needs to be conducted before each welding seam is welded, the welding position needs to be preheated, and therefore the production efficiency is low is solved.