511 results about "Welding joint" patented technology

This invention relates to the field of waterproof membrane technology, specifically to a TPO thermoplastic polyolefin polymer composite material. This material is composed of multiple components, including an interface-controlled masterbatch. Its core lies in the process of sequentially hydroxylating, treating with vinyltrimethoxysilane, hydrolyzing and condensing tetraethyl orthosilicate, and treating with octadecyltrimethoxysilane to obtain a surface-functionalized filler, which is then combined with maleic anhydride-grafted polypropylene to form the interface-controlled masterbatch. This design significantly improves the interfacial bonding between the filler and the polymer matrix, enabling the material to maintain excellent mechanical properties, dimensional stability, and low-temperature flexibility even after artificial climate aging, and effectively ensuring the long-term durability and reliability of welded joint areas.

The present application relates to relay manufacturing technical field, particularly to a kind of relay profiling welding device, including welding head and fixed tooling, fixed tooling includes support, fixed rod and sequentially arranged in first direction rotation driving mechanism, driving seat, driven seat, rotation driving mechanism and driven seat are connected with support respectively, rotation driving mechanism and driven seat can be perpendicular to first direction movement relative to support;Fixed rod is fixedly connected with support;The output end of rotation driving mechanism is fixedly connected with driving seat, and driving seat is equipped with the profiling track corresponding to relay welding profile, and fixed rod is inserted in profiling track, to guide the movement of driving seat relative to fixed rod.This relay profiling welding device can be used for welding to the product with special-shaped welding profile, and the distance between welding point and welding head can be kept stable during welding, and the welding effect is good.

This application relates to the field of battery processing equipment technology, and in particular to a laser welding gripper and laser welding equipment. The laser welding gripper includes a gripper body and an air blowing channel. The gripper body includes a pressing part and a mounting part connected to each other, and the mounting part is used to connect with a base. The pressing part has a pressing surface on one side in a first direction, which can press against the surface of the workpiece. The pressing part has a processing hole that penetrates the pressing part in the first direction. The air blowing channel is disposed inside the gripper body. One end of the air blowing channel is connected to the air supply device of the base, and the other end of the air blowing channel penetrates the wall of the processing hole in a second direction to form an air blowing port. According to the laser welding gripper and laser welding equipment provided by this application, the processing smoothness of the workpiece is guaranteed, the oxidation phenomenon on the surface of the workpiece is reduced, and the generation of spatter is reduced, thereby significantly improving the strength and corrosion resistance of the weld joint and improving the welding quality.

The utility model relates to LIBS technology, specifically provide based on LIBS technology's metal welding on -line detection device, include: LIBS detection unit, including light source, receiving module and analysis module, first discernment unit is used for discerning the position of metal weld joint, drive unit is used for driving the light source movement, makes the emergent light of light source focus at weld joint, the utility model has on -line, result accurate etc.

This invention provides a 590MPa grade solid welding wire, a laser-arc hybrid welding process, and a welded joint. The composition system of this invention is precisely adapted to the rapid heating and cooling thermal cycle characteristics and the burn-off law of key alloying elements in laser-arc hybrid welding of 590MPa grade marine engineering steel. By strictly controlling the content of highly hardenable elements such as C, Mn, Ni, and Mo, the formation of hardened structures in the weld metal is avoided. A certain amount of Ti element is added to provide nucleation points within the grains, directionally inducing the formation of a highly oriented and complex acicular ferrite matrix structure, thereby simultaneously improving strength and toughness through grain refinement. At the same time, an appropriate amount of V element is added to further improve the strength margin of the weld metal through microalloying. This welding wire has excellent welding processability and crack resistance, and can achieve room temperature welding without preheating or post-heating, providing material support for the high-quality and high-efficiency construction of marine engineering equipment.

The present invention provides a secondary battery and a secondary battery module having excellent welding strength between an opening part of an outer can and a lid member.　The secondary battery according to an embodiment has the outer can with a bottom wall, a side wall, and the opening part, an electrode group housed in the outer can, and the lid member fixed to the opening part of the outer can by a welded part. In a cross section taken along the housing direction of the electrode group, the welded part has a first connection part that connects, on the inside of the outer can, the side wall to a bottom face of the lid member. The first connection part is recessed toward the outer can exterior of the welded part.

This invention belongs to the field of data prediction technology, and provides a method and system for predicting solidification cracks in alloy welding. The method includes: acquiring the thermophysical parameters, scanning speed, and horizontal and vertical distances from the solidification point to the welding point of the alloy to be tested; calculating the theoretical angle between the scanning speed direction and the normal to the fusion line based on the horizontal and vertical distances from the solidification point to the welding point; establishing a continuous growth limiting factor calculation model based on the thermophysical parameters, scanning speed, and theoretical angle, and determining the derivative expression model between the solid-liquid interface temperature and the square root of the solid fraction; establishing a crack sensitivity index calculation model based on the continuous growth limiting factor calculation model and the derivative expression model; converting the crack sensitivity index calculation model into a data curve, and obtaining the welding solidification crack prediction result based on the data change characteristics of the target segment in the data curve. This scheme has a simple calculation process, strong engineering applicability, and improves the accuracy of solidification crack prediction.

This application provides a fixture and method for clamping and machining thin-walled welded parts, relating to the field of fixture and tooling technology. The fixture includes a base mechanism, a central positioning mechanism, an angular positioning structure, an auxiliary support mechanism, and a clamping mechanism. The base mechanism uses a disc and multiple circumferentially arranged elongated plates to form a support surface; the central positioning mechanism mates with the positioning inner hole of the part to achieve central positioning; the angular positioning structure mates with the angular hole of the part to achieve angular positioning; the auxiliary support mechanism is set for each lug to be machined, using V-shaped supports and lateral limiting components to provide auxiliary support and limit the lugs to be machined; the clamping mechanism clamps the part to the clamping reference surface. This solution can improve the clamping stability, positioning accuracy, and local rigidity during machining of thin-walled welded parts, reduce vibration and lateral displacement of the lugs to be machined, and reduce the risk of cracking at the weld joint.

The application discloses a kind of temperature pressure coupling under the evaluation device and method of life degradation of welded joint, the device includes shell, pressure rod, heating system, pressure sensing system, cushion block, control system;Pressure rod is used to apply pressure to the sample to be measured;Heating system, heat insulating block, pressure sensing system, cushion block are installed in shell, and are coaxially installed with pressure rod, cushion block is located below pressure rod, pressure sensing system is located below cushion block, heat insulating block is located below pressure sensing system;Heating system is installed in the bottom of shell, and the inside of heating system is the cavity for placing the sample to be measured;Pressure sensing system is used to detect the pressure applied by pressure rod, heating system is used to heat the sample to be measured, control system is used to control pressure sensing system, heating system and receive the data of pressure sensing system, heating system.The application can simulate the service environment of welded joint under coupling condition, and provide data support for studying the life degradation of welded joint.

The application provides a robot welding trajectory planning method and a welding robot. The robot welding trajectory planning method comprises the following steps: obtaining N discrete welding points on a to-be-welded trajectory; performing B-spline interpolation on the N discrete welding points to obtain a welding motion trajectory of the robot; obtaining the displacement and instantaneous speed of each joint of the robot at each time according to the obtained welding motion trajectory; and controlling the welding gun end of the robot to move along the welding motion trajectory at a target speed and a target posture according to the obtained displacement and instantaneous speed information of each joint of the robot at each time. The robot welding trajectory planning method solves the problem that the existing robot welding motion planning method cannot meet the welding planning of a spatial complex curve trajectory for an industrial robot.

The present application relates to the field of water turbine processing technology, and discloses a kind of water pump upper crown inner ring and outer ring integral processing method, comprising the following steps: scribe line;Coarse lathe;Processing casting defects;4 process pressing plates are symmetrically welded on flow channel curved surface;Semi-finish lathe;Draw center cross line, draw each screw hole processing line;Finish lathe flow channel curved surface: clamp big head flange outer circle, dial gauge alignment has been processed inner circle, numerical control programming, semi-finish lathe, finish lathe small head end surface, flow channel curved surface, R fillet, step plane to drawing size, and according to drawing size position requirement, 0.20mm deep mark is engraved, and it is used for blade welding, and it is combined with crown flow channel template inspection;With processing inner hole as scribe line reference, draw impeller upper crown flow channel weld joint circle line;According to circle line, cut into upper crown inner ring and upper crown outer ring into two halves, so that the impeller upper crown flow channel processing size, form tolerance accuracy and roughness meet the requirements.

The application provides a cavity structure part annular electron beam welding joint design method, which comprises the following steps: tilting the angle of the radial ring weld of a part along the part axis direction clockwise by a preset angle, so that the closest distance of the beam current to the flange edge of the part casting body on the side of the radial ring weld is increased, the welding lock bottom is also increased in thickness due to the tilt of the weld, the part can be prevented from being damaged during welding, and the risk of splashes generated by penetrating the welding lock bottom is reduced; a filler platform is arranged on the side of the cover plate at the radial ring weld, which can help quickly find the weld position in the equipment observation system and facilitate welding; the axial ring weld of the part is offset to one side of the part casting body by a preset distance, so that the weld is changed from a no-welding lock bottom end face weld to a welding lock bottom butt joint weld, a boss is added to the inner wall of the cover plate to form a butt joint structure with the casting body, so that non-penetration welding can be ensured, and welding splashes in the part inner cavity are prevented.

This invention discloses an optimized method for stator and rotor welding processes in the field of motor manufacturing, comprising the following steps: improving welding quality through pretreatment, coating with modified composite materials, and optimizing laser welding parameters. During pretreatment, the stator and rotor areas to be welded are sanded with 800-1200 grit sandpaper, followed by ultrasonic cleaning with acetone or alcohol for 10-15 minutes to achieve a surface roughness Ra ≤ 1.6 μm; a 0.1-0.3 mm thick layer of modified composite material is coated onto one surface and dried at 80-120°C for 1-2 hours; laser welding is employed, with the molten pool temperature monitored at 1800-2200°C during welding; immediately after welding, the welded parts are placed in a holding furnace at 200-300°C for slow cooling for 2-4 hours, and then cooled to room temperature at a rate of 5-10°C / min. This method effectively improves the strength, toughness, and crack resistance of the welded joint, reduces the heat-affected zone, and minimizes deformation.

The invention discloses a laser welding method for an ultra-high-strength stainless steel welding part and the ultra-high-strength stainless steel welding part, and particularly provides two stainless steel blank workpieces to form an assembly, and the blank assembly is melted to form a laser welding joint under the action of a laser heat source. And the welded joint is placed in a low-temperature environment at the temperature T for a period of time to be subjected to subzero treatment, and then the welded joint with the excellent joint performance within the wide temperature range is obtained. The welding joint has ultrahigh strength, and the strength of the welding joint can reach 90% or above of the strength of a base material in typical low-temperature (-196 DEG C), room-temperature and high-temperature (100 DEG C) environments; and the application in environments with different assembly gaps can be met.

The utility model discloses a kind of for the reinforcing uniform fixing tool of single crystal furnace heat preservation cylinder outer layer felt, including the outer side of soft felt is provided with multiple parallel transverse steel belts and the fixed end and movable end of connecting transverse steel belt two ends, the side surface of transverse steel belt away from soft felt is vertically spaced apart and is welded vertical steel belt, form grid structure, and transverse steel belt and the welding point of vertical steel belt are equipped with the reinforcing rib piece of triangle, the both ends of vertical steel belt are equipped with the protrusion in contact with soft felt. Uniform arrangement is formed in the outside of soft felt to form uniform fixing, realize that the heat preservation performance of each part of soft felt is consistent, improve the reinforcing effect of overall to soft felt.

This application relates to the field of welding fixture technology, specifically providing a fixing device for high-altitude laser welding of outdoor gas pipelines. The device includes: a device body for temporarily fixing a new pipe section; a first clamping and fixing part fixedly disposed on the left side of the device body for clamping an existing pipe section; a second clamping and fixing part detachably disposed in the middle of the device body for clamping and fixing the weld joint between the existing and new pipe sections; and a third clamping and fixing part fixedly disposed on the right side of the device body for clamping the new pipe section. This provides a more reliable clamping force during high-altitude operations, effectively preventing pipeline displacement caused by wind disturbance or gravity, thereby improving laser welding quality, reducing weld defects, and ensuring the welding safety and reliability of outdoor gas pipelines.

This invention provides a device for detecting the airtightness of a box, relating to the technical field of airtightness testing devices. It includes a first connecting pipe, with a socket-welded joint fixedly connected to its top. A second connecting pipe is fixedly connected to the top of the socket-welded joint. An exhaust pipe is fixedly connected to one side of the second connecting pipe, and an inlet pipe is fixedly connected to the other side. A third connecting pipe is fixedly connected to the top of the second connecting pipe. Pressure gauge connectors are provided at both ends of the top of the third connecting pipe, and pressure gauge bodies are mounted on the tops of both sets of pressure gauge connectors. This invention connects the exhaust pipe and inlet pipe via the second connecting pipe, and the pressure gauge bodies via the third connecting pipe. The entire device is easy to manufacture, low in cost, portable, space-saving, and convenient to operate, saving time and effort.

This utility model provides a welding device for a return oil pipe joint, belonging to the field of welding technology. It includes a base on which a welding robot is mounted. The welding robot is used for welding between the ball end and the hose connection end. It also includes a heat dissipation mechanism, which includes a housing fixed to the base, with a support rod fixedly passing through the side of the housing. By setting up the heat dissipation mechanism, the heat outside the welding point on the ball end is transferred to the support block, and then the heat on the support block is carried away by gas, thus cooling the ball end. This prevents the sealing surface of the ball end from warping slightly due to high temperature, ensuring the sealing surface of the ball end and the seal between the sealing surface and the injector. When gas passes through the inside of the hose connection end, it also reduces the temperature of the hose connection end, preventing it from overheating, thereby reducing the impact on the quality of the hose connection end and ensuring its durability.

The application discloses a brazing filler metal for titanium alloy and stainless steel connection and application thereof, and the brazing filler metal comprises an Ag-Cu eutectic brazing filler metal base and NiTi alloy particles. By introducing the NiTi alloy particles into the Ag-Cu eutectic brazing filler metal base, the Ni and Ti in the interface neighborhood are cooperatively involved in diffusion and reaction, the wetting and forming consistency of the brazing filler metal are cooperatively improved, the interface reaction layer is formed into a discrete thin layer, the continuous brittle reaction layer is inhibited from being generated, the risk of crack propagation along the interface is reduced, the shear strength of the brazing filler metal welding joint for titanium alloy and stainless steel connection is remarkably improved, and the forming quality and batch consistency of the brazing joint are improved.

This invention relates to the field of motor design and manufacturing technology, specifically a design method for flat copper wire stator windings of motors. The method includes: constructing a basic data source layer to integrate stator slot space data, electromagnetic boundary data, and conductor physical parameters; constructing a topology generation layer to plan the winding spatial distribution and end connection paths, wherein a transposition connection module plans the inter-layer connection relationship of conductors within the slot, and an end topology module plans the spatial layout of end welding points; constructing a dynamic adjustment layer to establish a three-dimensional spatial matrix based on the stator core end face, setting a stepped misalignment mechanism including stepped misalignment amount and design tolerance, and adjusting the axial height distribution of end welding points; and generating and outputting a three-dimensional design model or manufacturing parameters of the stator winding based on the adjustment results, achieving a unified approach to electromagnetic optimization, end space avoidance, and welding accessibility.

Non-destructive inspection of welded rail joints by ultrasound phase-array transducers in one device, precise positioning non-destructive inspection probes and moving the probes in longitudinal and transverse directions. Two scanners have ultrasound phase-array transducers and emission control unit for sequential or simultaneous inspection of welded joints using (i) two ultrasound phase-array transducers are directed to each other and operate separately, wherein the transducers provide a beam sector of 36-75 degrees; (ii) two ultrasound phase-array transducers are directed to each other and operate separately, wherein the transducers provide a beam sector of 26-24 degrees from the tread surface during longitudinal movement; and / or (iii) two ultrasound phase-array transducers are directed to each other, one transducer emits a transverse wave with a predetermined angle from the tread surface to the base of the rail, while the other transducer receives a longitudinal wave that occurs only when a vertical crack exists in the rail.

The application provides a welding device for foundation pit enclosure construction, and relates to the technical field of foundation pit reinforcing mesh welding. The welding device comprises a welding clamping piece, and a welding part is installed on the welding clamping piece. The welding part is used for improving the lap joint precision of reinforcing bar heads. A vertical reinforcing bar limiting piece is installed on the welding part. The vertical reinforcing bar limiting piece is used for limiting the spacing between vertical reinforcing bars. A folding prevention supporting piece is installed on the welding clamping piece. A lower weld joint protection piece is installed on the welding part. A welding guide is installed on the welding clamping piece and the welding part. The welding device can be used for clamping the reinforcing bar heads of horizontal reinforcing bars first, and then performing forward and reverse double-sided welding, so as to solve the problem that the existing welding device for foundation pit enclosure construction is inconvenient for workers to clamp the reinforcing bar heads of horizontal reinforcing bars first, and then perform forward and reverse double-sided welding.

This invention discloses a welding method, heat sink, and aircraft applicable to multi-layer precision structures, belonging to the field of aircraft welding technology. The welding method includes: depositing a solder film on a first substrate to obtain a substrate to be etched; optimizing the laser scanning path according to a preset precision structure and solder pattern; placing the substrate to be etched at the laser etching location and performing integrated scanning etching using a laser to complete the preparation of the solder pattern and precision structure, obtaining a first substrate to be welded; vertically aligning a first welding cover plate with the first substrate to be welded and performing interlayer welding of the precision structure; repeating the above process to complete the interlayer welding of the double-layer precision structure. This invention achieves precise preparation of solder for small-scale complex pattern welding points and integrated interlayer welding of multi-layer precision structures through laser etching, meeting the stringent requirements of the aerospace field for high airtightness, high sealing performance, and high-precision welding.

A kind of bridge steel-concrete joint section manufacturing method, step S1, all parts are cut and bevelled using numerical control cutting machine;Step S2, panel unit element manufacturing is carried out: step S3, respectively, weld bottom plate unit element, inner web unit element, outer web unit element, middle crossbeam unit element, blast nozzle three-dimensional unit element, pressure plate unit element: step S4, steel-concrete joint section manufacturing is carried out.The reasonable assembly welding sequence of the present application makes each component weld joint have better welding operation space, improves welding quality and efficiency;At the same time, it is guaranteed that each component can be smoothly installed in place.

The utility model discloses a high accuracy welding positioning fixture of charging pile main control board belongs to charging pile main control board welding technical field, including the substrate, still includes the flexible centering clamping mechanism, the upper end rear side of substrate is installed with the flexible centering clamping mechanism, the flexible centering clamping mechanism includes drive assembly, fixed clamping assembly, movable clamping assembly, horizontal transverse movement subassembly, horizontal vertical movement subassembly and tension spring, and tension spring is connected with fixed clamping assembly and movable clamping assembly. Through above -mentioned mode, make the device can be to charging pile main control board and carry out more quick and accurate positioning clamping, has reduced operator additional welding piece positioning workload, and guarantees that welding piece can be at the set welding point position, and the operation is simple, and the practicality of device has been further improved.

This application discloses an electromagnetic coil assembly and a normally open solenoid valve. The electromagnetic coil assembly includes a coil frame, a coil winding, a connecting terminal, a lead wire, and a plastic encapsulation shell. The coil frame has a cylindrical body and end caps at both ends. The coil winding is wound around the cylindrical body. The connecting terminal is fixed to the side of the end cap and electrically connected to the lead wire of the coil winding. One end of the lead wire is connected to the connecting terminal, and the other end extends along the outer end face of the end cap and crosses the edge of the end cap away from the connecting terminal to form an exposed section. The plastic encapsulation shell covers the above components and exposes the exposed section of the lead wire. By extending the lead wire arrangement path, increasing the distance between the welding point and the lead wire end, and increasing the plastic encapsulation thickness, the risk of moisture intrusion is reduced, corrosion and poor contact at the welding point are avoided, and the reliability and service life of the electromagnetic coil assembly are improved.

This invention relates to the field of welding cooling device technology, and discloses a welding cooling and protective fixture for electronic expansion valves. The fixture includes a protective housing, a baffle fixedly connected to the inner wall of the protective housing, a mold cavity formed in the inner wall of the baffle for placing the expansion valve body, and a cooling mechanism provided on the inner wall of the protective housing. The cooling mechanism includes a sealing shell, the bottom of which is fixedly connected to the inner wall of the protective housing, and the inner wall of the sealing shell contacts the outer wall of the expansion valve body for cooling the expansion valve body piping. A flow guiding cavity is formed in the inner wall of the sealing shell. This invention cools the expansion valve body piping by setting a cooling mechanism with a spiral flow channel, and by using a one-way valve inside the butt joint block to intercept the coolant when the protective housing is released after welding the expansion valve body, preventing coolant leakage and thus avoiding defects at the weld joint, thereby increasing the stability of the electronic expansion valve welding process.

The utility model discloses a two -wheeled electric vehicle tail assembly welding set relates to welding set field. The utility model provides a two -wheeled electric vehicle tail assembly welding set that can clean parts, including work platform, still including first guide piece, and first guide piece symmetry fixedly connected in work platform, and there is the guide rail of sliding type connection between first guide piece, and there is the sliding piece of sliding type connection on guide rail, and the second guide piece of rotating type connection has in sliding piece, and the knob piece of sliding type connection has in second guide piece, and the connecting piece of knob piece fixedly connected, and the elastic telescopic part of symmetrical distribution is fixedly connected on connecting piece, and the fixed seat of mutual far side fixedly connected of elastic telescopic part, and the motor of fixed seat fixedly connected, and the rubber stick of motor fixedly connected, and the multiple brush hairs of circumferential distribution are fixedly connected on rubber stick. The utility model drives the brush hair rotation through rubber stick to clean the welding point on the part, makes the impurity on the part be cleaned thoroughly, avoids the influence welding of impurity.