996 results about "Weld strength" patented technology

The invention discloses a gradient welding strength control method and system for a welded galvanized steel pipe for fire fighting, particularly relates to the technical field of welding automation control, and aims to solve the problem of abnormal welding seam strength gradient caused by instantaneous unbalance of an electric field and a thermal field during dynamic parameter switching in the prior art. Electromagnetic distortion characteristic quantity is extracted through frequency domain energy analysis, and thermodynamic offset state quantity is deduced in combination with a thermal diffusion trend; on the basis of frequency band correlation mapping of electromagnetic and thermodynamic parameters, thermoelectric cooperative imbalance levels are divided through mutual information entropy evolution, and a self-adaptive harmonic attenuation weight tuning instruction is generated; analyzing a mismatching relation between transient disturbance of an environment magnetic field and arc voltage modulation distortion in real time, dynamically generating a magnetic field compensation factor and reversely superposing the magnetic field compensation factor to a control instruction; and in combination with the matching degree of molten pool oscillation energy and a harmonic frequency spectrum, correcting wire feeding rate calibration, reconstructing a multi-band harmonic energy proportion spectrum, outputting an anti-interference welding control signal, and realizing dynamic balance between arc stability and molten pool heat input.

The invention relates to the technical field of welding strength detection, and discloses a communication system sub-element packaging welding strength detection device, which comprises a push-pull force testing machine main body, a clamp is arranged in the middle of the bottom surface of the push-pull force testing machine main body, and consoles are arranged on the two sides of the push-pull force testing machine main body. And an operation handle and a plurality of control keys are arranged on one console. According to the packaging welding strength detection device for the communication system sub-element, when parts such as the protective shell and the test module need to be controlled to descend quickly, the impact ball can impact the surface of the ejector rod to make a sound for reminding; meanwhile, when the chip is in place, a triangular plate and two first arc-shaped elastic conducting strips form circuit series connection and then buzz is made to remind an operator that the testing head is about to reach a designated position, so that the testing head can be controlled to rapidly reach the designated position, and meanwhile damage caused by collision between the testing head and the chip is avoided.

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The flame-retardant ABS composition provided by the invention comprises the following components in parts by mass: 50-80 parts of ABS resin; 8 to 12 parts of styrene-acrylonitrile copolymer; 3 to 5 parts of styrene-acrylonitrile-maleic anhydride terpolymer; 2 to 6 parts of a fluorine-containing maleimide copolymer; 5 to 15 parts of graphite nanosheet modified high rubber powder; 12 to 18 parts of brominated flame retardant; 3-7 parts of a phosphorus-based flame retardant; 0.1-1 part of a processing aid; the phosphorus-based flame retardant is prepared from the following components in parts by mass: 80 to 95 parts of diethyl phosphinate; 0.3 to 3 parts of ethyl butyl phosphinate; 0.1 to 2 parts of ethyl phosphonate; and 5 to 20 parts of melamine polyphosphate. The flame-retardant ABS composition prepared by the invention is good in flame retardant property, good in welding strength and low in cost.

The invention belongs to the technical field of welding devices, and particularly relates to an electric actuator shell automatic welding device which comprises a mounting frame, a supporting frame is fixedly connected to the upper side wall of the mounting frame, a control cabinet is fixedly connected to the side wall of the supporting frame, and a vertical electric push rod is fixedly connected to the upper side wall of the supporting frame. The moving end of the vertical electric push rod penetrates through the supporting frame. When the nameplate is welded to the surface of the electric actuator in a spot welding mode, the welding strength of the nameplate can be automatically detected, and when insufficient welding of a nameplate welding spot is detected, an operator can be timely reminded to carry out repair welding on the nameplate, so that the welding strength of the nameplate is guaranteed, and the welding efficiency of the nameplate is improved. And when four welding spots of the nameplate are detected, the abrasion degree of the welding electrode on the side can be analyzed by recording the frequency of pseudo soldering of a certain welding spot, and then the abraded welding electrode is polished, so that the welding performance of the welding electrode is ensured.

The invention relates to the technical field of semiconductor packaging, and provides a semiconductor packaging process which comprises the following steps: obtaining a circuit board, and preprocessing the circuit board; performing SMT assembly operation on the bottom surface of the circuit board; silk-screening solder paste on the top surface of the circuit board; a tin cap of the flip chip is dipped with a soldering flux; mounting a flip chip and other elements on the top surface of the circuit board; performing reflow soldering operation on the top surface of the circuit board; according to the semiconductor packaging process provided by the embodiment of the invention, the tin cap of the flip chip can be dipped with the soldering flux before confluence welding operation is carried out on the flip chip, so that in the reflow soldering process, the soldering flux can effectively protect the tin cap and a PCB bonding pad and prevent oxidation, the collapsed tin cap can recover the original state of the tin cap to the greatest extent during reflow soldering, and the reliability of the flip chip is improved. The tin cap can be in contact with the PCB bonding pad more effectively, good welding is formed, the wettability is improved, oxidation is reduced, the welding strength is enhanced, and the problems of pseudo soldering, open circuit and the like are reduced.

The invention provides a high-hardness cobalt-based alloy welding wire and a preparation method thereof, and the high-hardness cobalt-based alloy welding wire comprises the following components in percentage by mass: less than or equal to 0.5% of C, 3-4% of Si, 15-20% of Cr, 1-4% of Ni, 25-30% of Mo, 45-55% of Co, less than or equal to 1% of Fe, less than or equal to 0.02% of La, less than or equal to 0.02% of B, less than or equal to 0.01% of S and less than or equal to 0.01% of P. According to the cobalt-based welding wire, through regulation and control of alloy elements, the hardness of the cobalt-based welding wire is remarkably improved, the uniformity of components of the welding wire is improved, the welding strength is improved, the size of the welding wire is extremely thin, and the welding manufacturability of the welding wire is improved.

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 welding method and device based on sinusoidal modulation Burst mode ultrafast Bessel light, and the welding method comprises the following steps: S1, a first workpiece to be welded is stacked above a second workpiece, optical contact is formed between the first workpiece and the second workpiece, and the first workpiece is made of a transparent material; s2, outputting ultrafast laser by a laser, and performing time and space shaping on the ultrafast laser to form ultrafast Bessel light in a sinusoidal modulation Burst mode; and S3, the light path is adjusted, ultrafast Bessel light in the sinusoidal modulation Burst mode acts on the target welding area, and welding of the transparent material is achieved. According to the method, ultrafast Bessel light in a sinusoidal modulation Burst mode is formed by conducting time and space shaping on ultrafast laser to act on a target welding area, the stable heating and melting process of a transparent material can be achieved, excessive heating of plasma can be greatly avoided, the ultrafast laser energy of an overall injection sample is reduced, and the welding quality of the transparent material is improved. And the welding strength and stability are improved.

The invention discloses a brazing method for improving the welding strength of a polycrystalline diamond cutter and a hard alloy. The brazing method comprises the following steps that S1, brazing filler metal alloying is conducted; and S2, the PCD tool bit and the hard alloy matrix are subjected to vacuum brazing. According to the brazing filler metal, an Ag-Cu-Co system is adopted, Ag mainly plays a role of a solder matrix and provides plasticity and thermal conductivity, Cu mainly plays a role of forming an eutectic structure with Ag and reducing the melting point, and Co mainly plays a role of wetting the surfaces of PCD and hard alloy. Co infiltration is adopted in the preparation process of the PCD tool bit used in the method, so that a certain amount of Co exists on the PCD surface, and the hard alloy tool body also contains Co, and therefore, a small amount of Co in the brazing filler metal can better wet the welding surface according to the similar intermiscible principle. In the vacuum brazing process, additional pressure does not need to be applied, when the brazing filler metal is molten, the brazing filler metal is evenly laid on the welding face under the action of the pressure of the PCD tool bit on the upper portion and the capillary effect, the redundant brazing filler metal can flow out of the two sides of the mold, and the flatness of the welding surface can be effectively guaranteed.

A ceramic capacitor with double L-shaped pins comprises two supports arranged oppositely, one or more ceramic chips arranged between the two supports and two first solder layers respectively arranged between the end portions of the one or more ceramic chips and the opposite supports, and each support comprises two frames arranged symmetrically and a second solder layer arranged between the two frames. According to the invention, the structure of the ceramic capacitor is limited, and the two symmetrically arranged frames are mutually welded through the welding flux to serve as the support, so that the welding area of the prepared support and the PCB is doubled, the welding strength of the prepared ceramic capacitor is improved, the bonding strength of the ceramic capacitor and the PCB is better, and the service life of the ceramic capacitor is prolonged. Compared with a single-frame ceramic capacitor, the ceramic capacitor can resist higher-strength vibration, improves the reliability of a product, and can be applied to high-reliability occasions such as space flight and aviation.

The invention discloses a welding fixing clamp for mechanical manufacturing, and relates to the technical field of clamps, the welding fixing clamp comprises a mounting plate, a clamping assembly is arranged at the position, close to the center, of the top of the mounting plate, and a detection assembly is arranged at the position, close to the edge of one side, of the top of the mounting plate; according to the welding fixing clamp for mechanical manufacturing, in the mechanical manufacturing process, when a cylindrical steel pipe needs to be welded, firstly, the steel pipe needing to be welded is placed in an arc-shaped rod, the position of the center line of the pipe is scanned and detected through a laser scanner, and the steel pipe is moved to the position of the center line of two clamping blocks under the action of a conveying device; according to the fixing clamp for welding the pipeline, the clamping assembly is arranged, the pipeline is clamped, the center line of the pipeline is aligned with the center line of the clamping assembly, so that the clamping force of the fixing clamp for welding the pipeline to the pipeline is uniform, and the problem that in the prior art, the clamping force of the fixing clamp for welding the pipeline to the pipeline is not uniform, and the pipeline welding strength is reduced is solved.

The invention discloses a laser welding method for a copper-aluminum composite material, which comprises the following steps of: performing upsetting thinning treatment on a three-layer sandwich structure base material to ensure that the total thickness of a welding area is 1.5 mm, the thickness of an aluminum layer is 0.9-1.1 mm (the deformation rate is 10-30%), the thickness of a copper layer is 0.2-0.3 mm, the surface roughness Ra is less than or equal to 1.6 mu m, and the surface roughness Ra of an oxide layer is less than or equal to 5 mu m; a 1064nm optical fiber laser is adopted, welding is conducted at the power of 85%-95%, the speed of 120-150 mm / s and the frequency of 4000-6000 Hz, the fusion depth is 0.3-0.6 mm, and the fusion width is 1.2-2.0 mm. By means of the method, the tensile strength of the connector can be larger than or equal to 110 MPa, the resistivity is smaller than or equal to 2.5 * 10 <-8 > omega.m, the problems that traditional welding strength is low and conductivity is poor are solved, batch quality consistency is ensured, and the method is suitable for the fields of new energy automobiles and the like.

The invention discloses a welding mistake proofing device for a new energy automobile welding part, and relates to the technical field of welding equipment. The laser welding device comprises a base, an adjusting ring is arranged on the top of the base, and a laser welding head is installed in the adjusting ring; a detection assembly is arranged at the top of the base and comprises a supporting shell installed on one side of the adjusting ring. Through the synergistic effect of the detection assembly and the adjusting assembly, real-time monitoring and angle dynamic adjustment of the fitting degree of two sets of pipeline workpieces are achieved, a pressure sensor can accurately recognize the eccentricity or dislocation problem during pipeline butt joint through pulley stress feedback, a driving motor is matched with a belt transmission system to drive an adjusting ring to rotate, and the fitting degree of the two sets of pipeline workpieces is adjusted. Compared with a traditional single-pipeline clamping device, the alignment problem during double-pipeline splicing is effectively solved, the problems of insufficient weld joint strength, poor sealing performance and the like caused by eccentricity are avoided, and the welding quality and the reliability of a new energy automobile pipeline system are remarkably improved.

The invention discloses a pipe fitting positioning and welding device with a surrounding structure, and relates to the technical field of welding, the pipe fitting positioning and welding device comprises a supporting seat, side supporting frames are fixedly mounted at the two ends of the top of the supporting seat, and active clamping mechanisms are mounted in the side supporting frames to position and fix pipe fittings; a supporting seat is installed on the top face of the side supporting frame, a surrounding welding mechanism is installed in the middle of the top face of the supporting seat and used for conducting surrounding type welding on pipe fittings, telescopic plates are installed on the front side and the rear side of the side supporting frame, and the inner ends of the telescopic plates are connected with edge grinding mechanisms. The problems of shaking deviation, low adaptability, untight butt joint, insufficient welding strength and the like which are prone to occurring in the pipe fitting welding process are cooperatively solved, the pipe fitting positioning stability and the structural adaptability are improved, the welding quality is comprehensively guaranteed through the links of pretreatment, precise welding, auxiliary cleaning and the like, energy consumption is reduced, and the operation efficiency is improved.

The present invention relates to the technical field of batteries, and discloses a battery and a battery pack, the battery comprises: a battery cell comprising a battery cell body and a tab part extending from the battery cell body; the pole assembly is welded with the tab part to form a first welding mark area, and a non-welding area is formed on the part, without the welding mark, of the tab part; the tab part comprises a plurality of tab layers which are stacked in the z direction, the surface roughness of the tab layers is R, the orthographic projection area of the first welding printing area on the tab part in the z direction is S, the thickness of the non-welding area in the z direction is T1, the thickness of the first welding printing area is T2, and the formula that (T2 * R) / (T1 * S) is larger than or equal to 1.4 * 10 <-6 > and smaller than or equal to 5.4 * 10 <-5 > is met. According to the invention, the over-current capability between the pole assembly and the tab part is ensured, the charging and discharging rate of the battery is improved, the voltage jump of the battery is avoided, the reliability of the battery is ensured, the welding strength of the tab part and the pole assembly is improved, the difficulty degree of the welding process is reduced, and the welding efficiency is ensured.

The utility model relates to a battery shell, a single battery cell and a battery pack. The battery shell comprises a battery shell body which is provided with an opening; the top cover body is arranged at the opening of the battery shell in a covering manner; the end face, facing the top cover body, of the battery shell is an upper end face, and the upper end face is provided with a first area and a second area arranged on the circumferential outer side of the first area; the top cover body is assembled in a first area of a battery shell, and a welding gap is formed between a second area of the battery shell and the circumferential outer wall of the top cover body. The battery shell solves the problems that the side welding bulges of the traditional side welding are higher, and the modules are easy to rub, and has the advantage of low welding seam bulges; and meanwhile, the problem of low compression strength of a large battery cell vertical welding product is solved, and the advantage of higher welding strength is achieved.

The invention discloses a stereoscopic warehouse goods shelf welding automation system and method, and belongs to the technical field of goods shelf welding. The system comprises a slewing mechanism, a sectional type positioning mechanism, N sets of supporting mechanisms, a feeding mechanism, a welding mechanism and a conveying mechanism. The slewing mechanism at least comprises a rotatable welding platform; the sectional type positioning mechanism is arranged on the welding platform; the N sets of supporting mechanisms are arranged on the welding platform in an array mode. The feeding mechanism is arranged on the welding platform relative to the sectional type positioning mechanism; the welding mechanism is arranged above the welding platform; and the conveying mechanism is arranged below the welding platform. In the welding process, physical contact between workpieces is guaranteed, and the welding strength and stability are enhanced by applying proper acting force; after welding is completed, the welding platform is rotated to enable the assembly to automatically fall down, the assembly is conveyed to a designated position through the conveying mechanism, and the full-automatic process from welding to conveying is achieved.

The invention relates to the technical field of batteries, and particularly discloses a battery shell assembly and a battery, and the battery shell assembly comprises a shell, an anti-explosion valve and a welding ring. A mounting hole is formed in one side face of the shell, the anti-explosion valve is arranged in the mounting hole, and the circumferential side wall of the anti-explosion valve is attached to the inner wall of the mounting hole in the radial direction of the mounting hole to form a seam. The welding ring is located in the shell, and the projection of the welding ring on the shell in the axial direction of the mounting hole can cover the joint. During assembly, the welding ring, the anti-explosion valve and the inner wall of the mounting hole are welded from the outer side of the shell along the position of the joint to form a welding part. The connection position between the anti-explosion valve and the shell is well supported through the welding ring, and the structural strength of the battery shell assembly is high. In addition, through the welding ring, it can be guaranteed that the welding quality between the anti-explosion valve and the shell is good, and the welding strength is high. The invention also provides a battery which comprises the battery shell assembly.

The invention relates to the field of building materials, in particular to nano-silver solder paste with high welding strength and a preparation method of the nano-silver solder paste. The nano-silver tin paste with high welding strength comprises the following raw materials: nano-silver powder, nano-tin powder, composite resin, a dispersing agent, an activating agent, a film-forming agent, a thixotropic agent, silicon-titanium particles, a stabilizing agent and the like. According to the nano-silver solder paste with the high welding strength and the preparation method thereof, uniform dispersion of an internal system is achieved, the welding effect and the welding performance are further optimized, the oxidation resistance can be greatly improved, the probability that high surface energy of nano-silver is prone to being oxidized to generate silver oxide is greatly reduced, and the welding quality of the nano-silver solder paste is improved. The silver solder paste prepared by the method further balances the balance between the preparation process and the high strength of the silver solder paste, and has excellent stability and mechanical strength, thereby meeting the requirements of high-reliability packaging in the prior art, and having wide application potential.

The invention provides a femtosecond and picosecond composite laser welding method and equipment for heterogeneous materials. The femtosecond and picosecond composite laser welding method specifically comprises the steps that glass and metal are stacked on a three-dimensional motion platform and clamped through a clamp; femtosecond laser (with the pulse width of 50-1000 fs and the peak power density of 10-10 W / cm) and picosecond laser (with the pulse width of 1-200 ps and the peak power density of 10-10 W / cm) are adjusted by different beam expanding systems, and after focusing, picosecond light spots completely wrap femtosecond light spots; the composite laser acts on a welding area and a femtosecond laser focusing interface in a time-space synchronization mode, plasma is excited to enable metal to be melted to fill gaps, picosecond laser forms a wide-area heating field on the femtosecond periphery, a violent temperature gradient is regulated and controlled to be in a gentle state, the preheating and after-heating effects are achieved, cracks are restrained, absorption is enhanced, and the welding strength is improved; and the composite laser is controlled by a control system to weld according to a specified path, so that high-strength connection of the glass / metal heterogeneous materials is realized. And the method becomes a breaking key for regulating and controlling the temperature gradient, inhibiting crack generation and improving the welding strength.

The invention provides a steel member welding device, and relates to the technical field of welding, the steel member welding device comprises a fixing frame body, and a stabilizing support is installed at the position of the included angle of the bottom edge of the fixing frame body; a collecting cover is mounted at the bottom of the stable bracket; a collecting box is mounted at the bottom of the inner side of the collecting cover, and two collecting air pumps are mounted at the top of the collecting box; a positioning support plate is mounted at the top of the rear side of the fixed frame body; a driving motor is mounted on the front side of one end of the positioning supporting plate, and second rotating transmission rods are rotationally mounted at the two ends of the inner side of the positioning supporting plate correspondingly. The inner side of a welding seam is finely polished through the polishing wheel at the bottom of the bearing plate, dirt, rust and other impurities on the surface of the welding seam are effectively removed, it is ensured that the welding seam can contain more welding water, the welding firmness degree and the overall quality are improved, and the problems that the containing space of a molten pool is limited due to the fact that the local width of the welding seam blocked by impurities is usually narrow are solved. And metal combination in the welding seam is not sufficient.

The utility model relates to the technical field of welding devices, in particular to a welding device for a water conservancy construction pipeline, which comprises a base, an electric sliding rail, a support ring a, a hydraulic rod and a clamping plate, an electric sliding rail is connected to the upper surface of the base through a bolt, a supporting ring a is connected to a sliding seat of the electric sliding rail through a bolt, a hydraulic rod is connected to the inner wall of the supporting ring a in a penetrating mode, a clamping plate is connected to the movable end of the hydraulic rod through a bolt, and a welding mechanism is arranged above the portion, close to one side of the electric sliding rail, of the base. According to the welding device for the water conservancy construction pipeline, an electric push rod b is started to make a grinding roller abut against the outer side of the pipeline, then a servo motor is started, the welding position of the pipeline is ground, and the welding strength is improved; smoke generated by welding and scraps generated by polishing are sucked away by starting the Roots blower, dust particles are filtered out through the filter screen box, harmful substances are sucked out through the activated carbon net, and then smoke dust is sucked.

The invention discloses a damping shock absorber machining laser welding machine which comprises an arranged welding box, a mechanical arm used for position adjustment is arranged at the side end of the welding box, a first conveying box is arranged at the end of the mechanical arm, and a welding head used for laser welding is arranged below the first conveying box. A second conveying box used for storing protective gas is arranged in the welding box, the output end of the second conveying box communicates with the first conveying box through a pipeline, and a spray head is arranged below the first conveying box. According to the laser welding machine for damping shock absorber machining, a welding head automatically moves through a mechanical arm, precise control and rapid adjustment of a welding path are achieved, the overall response efficiency is high, the welding efficiency is greatly improved, inert gas is sprayed out through a spray head at the bottom of a first conveying box, oxides generated on the surface of a damping shock absorber are reduced, and the welding quality is improved. The influence of the oxide layer on the welding quality is avoided, and the welding strength is improved.

The utility model belongs to the field of welding strength detection, particularly relates to welding strength detection equipment for welding parts, and aims to solve the problems that force is applied in a manual mode in the existing detection process and the detection mode of the detection equipment is relatively single, and provides the following scheme that the welding strength detection equipment comprises a bottom plate, and a pushing assembly for pushing pairs is arranged at the top of the bottom plate; the top of the bottom plate is fixedly connected with two supporting plates, the tops of the two supporting plates are fixedly connected with a transverse plate, the top of the transverse plate is slidably connected with a second base plate and a first base plate, and the top of the second base plate is provided with a torsion detection assembly for torsion detection. Torsion force and pulling force generated by detection of a welding piece are provided by the air cylinder and the driving motor respectively, a large amount of manpower is saved, meanwhile, pushing of the air cylinder can drive related assemblies above the two sliding blocks to synchronously move towards the two sides, pushing force applied by the air cylinder in the pushing process can be well monitored, and data can be obtained more accurately.

The utility model relates to the technical field of electric power energy storage, in particular to a novel energy storage liquid cooling plate brazing structure which comprises a basin-shaped upper cover plate and a basin-shaped runner plate, the basin-shaped runner plate is of a horizontally-arranged rectangular plate-shaped structure, the upper end face of the basin-shaped runner plate is buckled with the basin-shaped upper cover plate, and the lower end face of the basin-shaped runner plate is buckled with the lower cover plate. A groove is formed in the center of the upper end face of the basin-shaped upper cover plate, a mounting hole for mounting a water nozzle is formed in the inner wall of one end of the groove, an assembly hole for allowing one end of the water nozzle to penetrate through is formed in the position, located at the mounting hole, of one end of the basin-shaped runner plate, and a heat conduction assembly is mounted in the groove. The basin-shaped upper cover plate and the basin-shaped flow channel plate are sealed in a brazing manner, so that the sealing performance of the liquid cooling plate can be improved, gaps are reserved in vertical bending areas on the basin-shaped upper cover plate and the basin-shaped flow channel plate, and the brazing yield of the liquid cooling plate can be improved; and the reinforcing ribs are arranged at the bottom end of the basin-shaped runner plate, so that the strength and the rigidity of the basin-shaped runner plate can be improved, and the brazing deformation and the overall welding strength of the liquid cooling plate can be greatly controlled.

The invention relates to the technical field of pipeline welding, in particular to an anti-deformation welding device and method for a large-diameter water supply pipeline. The welding device further comprises a plurality of arc-shaped supports, a limiting mechanism and a shape correcting mechanism. The welding mechanism, the limiting mechanism and the shape righting mechanism are used in cooperation, the welding, limiting and shape righting integrated assembly type model is adopted for completing anti-deformation welding of the large-diameter water supply pipeline, and it is ensured that the axes of the large-diameter water supply pipeline are aligned and the shape is regular through precise limiting and shape righting; deformation and stress concentration in the welding process are reduced, and the welding quality and the welding seam strength are improved.

The invention belongs to the technical field of steel structure welding, and particularly relates to a steel structure connecting point welding device which comprises a mounting base, the mounting base is arranged on one side of a bearing connecting piece, the bearing connecting piece abuts against the side wall of a steel structure column, and a mounting cover is mounted on the side wall of the side, away from the bearing connecting piece, of the mounting base. A control main board is arranged on one side of the mounting cover, the splash stopping block is arranged at a welding groove of the steel structure column and the bearing connecting piece, a guide pushing unit is mounted in the mounting cover, and the guide pushing unit can drive the splash stopping block to move along the welding groove of the steel structure column and the bearing connecting piece. The supporting connecting piece can be fixed to the steel structure column, welding is convenient, the welding strength can be prevented from being affected by welding spatter, meanwhile, welding smoke can be synchronously absorbed to assist in improving the welding quality, the air permeability of the welding position is rapidly detected, and the welding quality is judged.

The invention provides a diamond cutter welding machine, and belongs to the technical field of cutter welding equipment, the diamond cutter welding machine comprises a machining table and a mechanical arm, the machining table is connected with a lifting frame and a motor, the diamond cutter welding machine further comprises a knocking assembly, the knocking assembly is used for eliminating stress generated during cutter welding, and a positioning clamp is arranged in the knocking assembly; the pressing assembly is used for ensuring tight connection of the cutter; the welding tool has the beneficial effects that uniform pressure can be applied to the joint of the tool bit and the tool handle through the pressing assembly, so that the welding parts are tightly attached, the welding strength is improved, in addition, the tool bit is clamped through the knocking rod, the auxiliary positioning and supporting effects are achieved, and the welding quality is improved. And meanwhile, in the working process, the rotating shaft can drive the positioning clamp and the extrusion plate to synchronously rotate, so that the extrusion plate extrudes the ejector rod, the knocking rod can be driven to rapidly reset through the reset spring, knocking on the tool bit is achieved, the vibration effect is generated, and air holes are reduced.

The invention relates to the technical field of welding, in particular to a welding seam checking method, system, device and equipment, and a storage medium. The welding seam checking method comprises the steps that the element size, the element load and the welding seam size empirical value of a to-be-welded element are obtained; building a finite element model of the to-be-welded element according to the element size; determining a weld load according to the finite element model and the element load; calculating the weld stress according to the weld load, the weld size empirical value and the element size; the welding seam size empirical value is checked according to the welding seam stress, so that the welding seam size meeting the welding seam strength requirement can be accurately determined, the welding workload and the production cost are reduced, and meanwhile, the production efficiency and the use safety of structural parts are improved.

The invention discloses a preparation method of a high-strength low-resistance functional aluminum current collector, and relates to the technical field of lithium battery manufacturing. The preparation method of the functional aluminum current collector comprises the following steps: adding water into a binder for dispersion, adding aluminum powder and a dispersing agent for high-pressure homogeneous dispersion, adding conductive carbon black and graphite step by step, stirring to obtain carbon-coated slurry, coating the carbon-coated slurry on a tab blank area of the current collector and a welding surface, in contact with the current collector, of an adapter foil, and carrying out vacuum drying to obtain the functional aluminum current collector. And finally, the functional aluminum current collector is prepared through ultrasonic welding. The functional aluminum current collector prepared by the invention has the characteristics of high strength and low resistance, solves the problems of high resistance and low welding strength of the traditional functional aluminum current collector, and is suitable for manufacturing high-performance lithium batteries.