1578 results about "Welding deformation" patented technology

The invention relates to the technical field of welding deformation control, and discloses a multi-stage adjusting method and system for steel structure welding deformation control. The method comprises the steps that steel member parameters are measured, a welding deformation prediction model is established, and pre-deformation data are obtained; performing accurate pre-deformation processing according to the data; executing segmented welding and recording a temperature field and a deformation amount; performing local heat treatment on the high-stress area to obtain stress distribution; correcting a deformation area by using multi-point force; and performing precision detection and quality evaluation according to the corrected data to form a control file. According to the method, high-precision control over welding deformation of the complex steel structure is achieved through data transmission and feedback adjustment of all stages.

The invention relates to the technical field of laser welding, and discloses a laser machining device and method for a nuclear reactor shell, and the method comprises the steps that a shell plate welding area to be welded is subjected to surface modification pretreatment; the laser processing device is used for carrying out initial welding on the pretreated shell plate, in the initial welding process, the temperature sensing assembly is used for monitoring temperature distribution of the welding area in real time, and temperature information of the welding area is obtained; the temperature information is input into a preset temperature-deformation prediction model for prediction of a variable trend and a stress distribution condition so as to obtain a first prediction result; based on the obtained first prediction result, the welding parameters of the laser processing device are dynamically adjusted for the first time; welding deformation and stress concentration are effectively coped with, the welding quality and structural strength of the nuclear reactor shell after laser welding are improved, and the reliability and safety of the nuclear reactor shell during use are effectively improved.

The invention provides a welding residual deformation simulation prediction and parameter optimization method for a structural welding part, which comprises the following steps of: firstly, establishing a three-dimensional model of the structural welding part, and performing simulation analysis on a welding temperature field, welding residual stress and welding deformation of the three-dimensional model by using a professional simulation analysis tool; secondly, the influence of clamping conditions, heat source forms and welding parameters on welding deformation of the structural welding part is researched, and simulation and physical verification is achieved. And then, by taking the minimum welding residual deformation as an optimization target, optimizing the welding sequence by adopting a genetic algorithm and taking the welding sequence and the welding direction as design variables to obtain a group of optimal solutions, and obtaining the welding sequence with the minimum welding deformation through simulation. And finally, on the basis of a welding sequence optimization result, performing simulation optimization by utilizing tightening position adjustment and reversible deformation design in sequence to obtain a process design scheme with minimum welding deformation.

The invention discloses a multi-dimensional self-adaptive conductive connecting piece welding positioning system, and relates to the technical field of conductive connecting piece intelligent welding positioning, the system comprises a multi-dimensional data acquisition module, and a multi-modal sensor is used for acquiring contour, feature, current and other data; the data processing and analysis module processes data through deep learning and a physical model and predicts deformation; the self-adaptive positioning adjusting module controls the eight-axis linkage mechanical arm to compensate deformation through MPC; the welding process monitoring module fuses multi-source data monitoring and triggers adjustment when abnormity occurs; and the intelligent decision and feedback module realizes closed-loop control and optimization through knowledge graph and active learning decision feedback. Through multi-modal sensing and an intelligent algorithm, accurate positioning and dynamic compensation of welding deformation are achieved, welding parameters are adjusted in a self-adaptive mode, intelligent decision making and remote operation and maintenance are combined, the welding quality and stability are improved, errors and cost are reduced, and powerful support is provided for efficient welding production.

Disclosed in the present application are a dual-sided laser synchronous welding heat source model establishment method, a dual-sided laser synchronous welding heat source simulation method, a dual-sided laser synchronous welding system, and a medium. Firstly, combined heat sources each comprising a Gaussian cylindrical heat source attenuation model and a Gaussian surface heat source correction model are established, and a dual-sided laser synchronous welding heat source model is established by means of a rotating coordinate system; a three-dimensional geometric model and a three-dimensional mesh model of a T-joint are established; and the consistency between simulated molten metal morphology and an actual weld shape is used as a criterion for determining whether parameter settings of the dual-sided laser synchronous welding heat source model are rational, so as to obtain an optimal finite element simulation heat source model. By establishing two heat sources each obtained by combining a Gaussian cylindrical heat source attenuation model and a Gaussian surface heat source correction model, and symmetrically applying the two heat sources to two sides of a T-joint to act on the interior and surface of a weld, the present invention realizes the accurate simulation of a weld penetration zone in a T-shaped thin-plate weldment, and thus enables the prediction of residual stress and welding deformation during a design phase, thereby optimizing the welding process, improving the welding quality and efficiency, and reducing material waste and production costs.

The invention discloses a pre-welding deviation rectifying device for a submerged-arc welding straight seam steel pipe, and relates to the technical field of steel pipe submerged-arc welding. The submerged-arc welding device comprises a machining table, a first linear sliding rail module and a second linear sliding rail module are installed at the top of the machining table, a submerged-arc welding assembly is installed on the second linear sliding rail module, a fixed plate is fixedly installed at the left end of the top of the machining table, a movable plate is installed on the first linear sliding rail module, and three-jaw chucks are installed on the movable plate and the fixed plate correspondingly. A three-jaw chuck drives an inner correction rod to expand outwards to conduct center positioning on a steel pipe, an inner circle can be corrected, then a guide disc is rotated to enable a connecting rod to enter an arc groove part of an inner correction guide groove to lock the position of the inner correction rod, and a swing rod drives an outer correction rod to swing through a telescopic rod. The outer correcting rods correct the outer circle of the steel pipe, the two sets of outer correcting rods are pressed on the two sides of a welding seam to clamp the welding seam, and therefore welding deformation caused by thermal expansion and contraction in the welding process is reduced.

The invention belongs to the technical field of laser welding, and discloses a real-time stress monitoring laser welding clamp with a force sensor and a control system, and the real-time stress monitoring laser welding clamp comprises a transverse connecting rod, a supporting column, a servo motor, an adjusting supporting column, a stress rod, a force sensor protection shell and the force sensor; the force sensor is additionally arranged on the welding clamp, welding deformation in the welding process is effectively monitored, in turn, deformation data is obtained to optimize the process of a welding machine, searching of a welding process window can be greatly shortened, and welding quality and welding efficiency are guided and improved. In the welding experiment process, when data change of deformation force in the welding process is obtained, system analysis software analyzes the deformation force and deformation prediction in the welding process, the welding process optimization direction in the welding process is further analyzed, and the welding quality is improved. The process is optimized from the aspects of welding clamping force, laser power, welding speed, welding laser beam focus scanning path and the like.

The invention provides a multi-field regulation and control excitation welding device and system and a magnetic field control method. The welding device comprises a welding gun; the excitation magnetic poles are symmetrically arranged on the two sides of the welding gun. The at least one group of common magnetic poles are arranged on one side of the welding gun and are respectively connected with a pair of excitation magnetic poles; in a first power-on state, one of the pair of excitation magnetic poles and the common magnetic pole are communicated with first current at the same time; in a second power-on state, the other one of the pair of excitation magnetic poles and the common magnetic pole are communicated with second current at the same time; and when the welding gun is in a working state, the first current and the second current are alternately started to form double-path pulse current so as to generate a pulse composite magnetic field capable of acting on the electric arc, the molten pool and the molten drops. According to the welding device, molten pool flowing and molten drop transition can be regulated and controlled in the transverse direction, the longitudinal direction and the vertical direction correspondingly, electric arc energy distribution is optimized, the penetration depth and molten pool swinging are increased, the welding speed is increased, root penetration is enhanced, weld joint forming is improved, welding heat input is reduced, welding deformation is reduced, and the manufacturing cost is reduced.

The invention relates to the technical field of titanium alloy welding deformation control, in particular to a device and method for controlling titanium alloy welding deformation, and the method comprises the following specific steps: S1, preparation before welding: determining a reversible deformation device according to a welding seam form of a titanium alloy part, and carrying out assembly and spot welding; the assembled titanium alloy welding part is fixed to a reversible deformation device, and it is ensured that the part does not deform in the welding process; s2, a welding process; a thermocouple is placed on the surface of a weld joint, a local heating belt and heat preservation cotton are laid, and the heating belt, the thermocouple and local heating control equipment are connected for heat treatment; and S4, measurement of welding deformation is carried out. According to the method, a complete and easy-to-operate technological process is constructed by combining pre-welding anti-deformation tool fixing and post-welding local heating treatment technologies, and the problem of welding deformation with considerable numerical values and complex forms generated by multiple welding procedures of a large complex titanium alloy structure is solved.

The invention relates to the technical field of steel welding, in particular to assembly type building steel structure automatic welding equipment which comprises a bearing plate, mounting plates are symmetrically arranged on the bearing plate front and back, first sliding grooves are formed in the end faces of the mounting plates, and a limiting part used for limiting a box column bottom plate is arranged between the two mounting plates. According to the box column welding device, alignment and abutting work on a box column can be achieved before welding work, the cross-shaped plate moves downwards to drive the side plates to be close synchronously, it is guaranteed that steel plates are always in a mutual abutting state before welding work, when the welding part is used for welding a seam, the welding efficiency is improved, and the welding quality is improved. The position of the alignment section of the L-shaped bearing plate is adjusted through movement of the electric sliding block, the abutting force between the side plate and the welding point positions of the bottom plate and the partition plate in the welding process is improved, free deformation of a workpiece is limited, then welding deformation is reduced, and meanwhile the situation that when single abutting is conducted, other parts are subjected to external force, and consequently position deviation occurs is avoided.

The invention relates to shipbuilding flatness inspection equipment and a use method thereof, and belongs to the technical field of shipbuilding flatness inspection. The shipbuilding flatness inspection equipment comprises a magnetic adsorption type mobile robot platform, a high-precision vision module, an edge computing unit and a cloud data management platform; the magnetic adsorption type mobile robot platform is provided with a crawler-type walking mechanism and a self-adaptive vacuum adsorption unit. According to the invention, efficient and high-precision whole ship flatness intelligent detection can be realized through multi-sensor fusion and a self-adaptive robot platform, the system is suitable for real-time quality monitoring in ship body section construction, deck assembly and fitting-out stages, local fine scanning can be executed along a welding seam area in a ship body section detection scene, and the detection accuracy is improved. A welding deformation out-of-tolerance area is synchronously marked, a non-key plane area can be switched to a global rapid scanning mode, and in the deck assembly stage, a cloud platform can integrate data in real time and assist in carrying out an assembly dislocation correction scheme.

The invention discloses a welding deformation pre-control device of an H-shaped steel assembling, welding and correcting all-in-one machine, and relates to the technical field of H-shaped steel welding, the welding deformation pre-control device comprises a welding table and a workpiece, and further comprises a deformation pre-control mechanism connected with the welding table and used for performing deformation control on the workpiece before welding; the deformation pre-control mechanism is installed to pre-control a wing plate and a web plate before welding, deformation of the wing plate and the web plate is controlled in the welding process, correction is not needed through pre-control over the web plate and the wing plate, and the H-shaped steel machining efficiency and the H-shaped steel machining quality are improved; the upper pressing combination mode is changed by installing the web side pressing limiting mechanism, pressure is applied from the side face, the workpiece machining stability is guaranteed in the welding process, the situation that a workpiece inclines due to upper pressing is avoided, and the workpiece machining quality is guaranteed; and heat generated in the welding process is reduced by installing the staggered welding mechanism, the deformation amplitude is reduced, the cooling speed is increased, and the machining efficiency is improved.

The invention discloses a welding deformation optimization system of a stainless steel pipe, and relates to the related technical field of welding, and the system comprises the following steps: carrying out multi-dimensional feature collection on the stainless steel pipe to obtain pipe feature information; analyzing pipe characteristic information and setting pipe welding constraints; dynamic temperature monitoring is conducted, the actual preheating temperature is obtained, and a preset welding temperature threshold value is set; the real-time welding temperature is obtained; when the real-time welding temperature does not conform to the preset welding temperature threshold value, a welding technology adjusting instruction is sent out; optimizing in the pipe welding space to obtain an optimal welding parameter strategy; and the stainless steel pipe is welded. The technical problems that according to existing stainless steel pipe welding, welding parameters are difficult to accurately set, uneven temperature distribution in the welding process is difficult to accurately control, an effective real-time monitoring and adjusting mechanism is lacked, and consequently the welding quality of the stainless steel pipe is poor are solved, effective control over welding deformation of the stainless steel pipe is achieved, and the welding quality of the stainless steel pipe is improved. The technical effect of improving the welding quality of the stainless steel pipe is achieved.

The invention discloses a welding deformation prediction system based on simulation analysis, and relates to the technical field of welding deformation prediction.The welding deformation prediction system comprises the steps that a micro-area unit grid is constructed by obtaining a geometric model of a to-be-welded structure, material heterogeneous distribution and welding path information; based on the grid and material characteristics, establishing a local nonlinear thermal-mechanical coupling simulation model; inputting heat source parameters, calculating an instantaneous temperature field, and constructing a stress evolution function in combination with path change; further deducing initial strain distribution, and generating a local deformation estimation map; error inversion is executed by comparing with historical experimental data, heat source and material parameters are corrected, and a simulation model is updated; and finally, outputting a welding deformation prediction map, and identifying a deformation sensitive region in the microstructure. The method has the high-precision prediction capability and the self-adaptive correction characteristic, and is suitable for deformation control and process optimization of the micro-scale welding structure.

Provided in the present invention are a device and method for monitoring the welding deformation of a base in the field of welding. The device comprises a round base assembly, adjustment rod assemblies, pointer support assemblies and dial assemblies, wherein the adjustment rod assemblies are arrayed around the round base assembly, each adjustment rod assembly is provided with a long round rod, the axes of four long round rods are adjusted until the four long round rods are horizontal and diagonally collinear, and the four long round rods can be coplanar as a whole; each pointer support assembly is positioned in a base positioning hole, and a cylindrical pointer in each pointer support assembly is coaxial with the base positioning hole; and each dial assembly is assembled on the long round rod, each dial assembly is provided with a dial, and the cylindrical pointer is perpendicular to the dial. The cylindrical pointers display the actual positions of the base positioning holes, the dials in the dial assemblies display the hole center positions of theoretical base positioning holes, and a deviation line is marked on each dial, thus facilitating the comparison between theoretical data and actual data; and by means of monitoring the relative positions of the base positioning holes in real time, data reference and position reference are provided for welding process adjustment. The present invention is suitable for being applied as a device and method for monitoring the welding deformation of a base.

The invention provides a curved surface segmented welding deformation prediction method and system, and relates to the field of data processing. According to the method, the welding heat input quantity is generated by obtaining the assembly error of a rib plate and a curved surface outer plate in a curved surface section, establishing the relation between the welding bead deposition area and the assembly error, constructing a welding heat input evaluation model and introducing a welding bead remelting coefficient. And determining a welding equivalent mechanical load based on the material thermodynamic parameters, inputting the welding equivalent mechanical load into the finite element model, and generating heated welding deformation prediction data. The gravity of the curved surface segments and the restraining force of the pressing block are converted into uniform volume force, and deformation precision analysis data are obtained; and constructing a contact unit model to analyze a contact state and a springback effect, and generating stress welding deformation prediction data. And finally, generating a welding deformation prediction result of the curved surface segment based on the data. By implementing the technical scheme provided by the invention, the prediction accuracy of the curved surface segmented welding deformation can be improved.

The invention provides a defect prediction and quality control method for high-strength aluminum alloy welding based on numerical simulation. The defect prediction and quality control method comprises the steps that a welding process finite element model is established according to the actual situation; inputting accurate heat source parameters, simulating a molten pool flow field, and revealing an influence rule of metal flow in the micro molten pool on formation of micro defects through visual simulation; phase field simulation and stress distribution simulation are conducted on the solidification behavior of the molten pool, the grain structure condition of a weld zone is obtained, and crack tendencies under different processes are evaluated in combination with stress distribution; post-welding deformation of the whole component is simulated, stress deformation of a key part is obtained, and post-welding deformation is inhibited by means of reversible deformation, pre-pressing and the like. The method belongs to the field of welding numerical simulation, and can help to adjust the welding process, reduce the crack occurrence rate during welding of the high-strength aluminum alloy and inhibit post-welding deformation.

The utility model relates to the technical field of bogies, in particular to a high-precision railway bogie connecting rod seat assembling tool which comprises a supporting table top. A transverse adjusting mechanism used for adjusting the bogie in the X-axis direction, a longitudinal adjusting mechanism used for adjusting the bogie in the Y-axis direction and a detecting mechanism used for detecting the position of a side face datum plane on the bogie are arranged on the supporting table top. The supporting mechanism is used for supporting the datum plane of the upper top face of the bogie and limiting the bogie in the Y-axis direction, and the positioning and pressing mechanism is used for positioning and pressing a connecting rod base on the bogie. The bogie and the connecting rod seat are positioned, assembled and welded, so that welding deformation can be effectively controlled, and the location degree after welding is ensured.

The invention provides a flexible welding deformation control method and an obtained bogie framework, specifically, a deformation monitoring sensor used for collecting workpiece deformation and a force sensor used for collecting clamping force are installed on a workpiece clamp; the deformation monitoring sensor and the force sensor are connected with the data acquisition control module; the method comprises the following steps: pre-installing a workpiece on a clamp, and establishing a mapping relation among the workpiece, the clamp and each sensor in the clamp; according to historical welding data of the same type of structure, presetting reversible deformation parameters, collecting pre-welding reference data, verifying data of each sensor, and if reversible deformation is effective, entering a welding process monitoring state; welding machine signals and sensor data are collected in real time, the deformation state is processed and analyzed in real time, and adjustment suggestions are output; and after welding is completed, the deformation trend of the workpiece after loosening and clamping is judged in combination with sensor data, deformation data of the workpiece after loosening and clamping are collected, whether the deformation data are qualified or not is judged, and if not, adjustment and repair are conducted till the deformation data are qualified.

The invention relates to a pre-assembly-free steel pipe truss arch parallel connection manufacturing process. The manufacturing process is characterized by comprising the following specific manufacturing processes: S1, projection of steel pipe arch units; s2, arranging a jig frame; s3, steel pipe welding; s4, welding the joint plate; s5, steel pipe arch parallel connection manufacturing; by means of the manufacturing process, a large amount of site occupied by pre-assembly can be omitted, and the production operation efficiency is improved; the labor cost required by the assembly process and the disassembly after the assembly is completed is saved; the material cost required by pre-assembly is saved, the welding finishing cost is saved through welding deformation control, and the manufacturing precision of the steel pipe arch is improved; and a special jig frame structure and a special welding platform structure are adopted, so that the construction efficiency can be effectively improved.

The invention discloses an aluminum alloy wind power generation olive pipe welding clamp which comprises a base, and the base is provided with a clamping assembly which comprises a first arc-shaped plate assembly and a second arc-shaped plate assembly which are oppositely arranged and matched with the outer contour of an olive pipe. The inner side of the first arc-shaped plate assembly and the inner side of the second arc-shaped plate assembly are each provided with a plurality of self-adaptive adjusting mechanisms capable of conducting self-adaptive adjustment according to the change of the shape of the olive pipe, and a pressure / temperature / displacement three-parameter sensing system is integrated on each self-adaptive adjusting mechanism. The driving mechanism drives the first arc-shaped plate assembly and the second arc-shaped plate assembly to clamp or loosen the olive tube; and the controller is used for realizing real-time compensation of welding deformation based on a digital twin system and is in communication connection with the driving mechanism and the three-parameter sensing system. Thus, precise positioning and stable clamping of the olive pipe are achieved through the clamping assembly matched with the outer contour of the olive pipe, displacement and shaking of the olive pipe in the welding process are effectively avoided, and the welding precision and quality are improved.

The invention discloses a large titanium alloy part integral welding and inspection method and a clamp thereof, and aims to solve the problem of machining and detection of semi-closed titanium alloy box parts in the aviation field, the parts are divided into X, Y and Z three-section structures for segmented machining, and high-precision process reference points (a reference plane and a plurality of reference points) are arranged in rigid areas of all split bodies; and reference point location cloud data are formed through three-coordinate measurement and are fitted into an integral target point cloud. During welding, a datum point is used as a positioning datum, the relative positions of the split bodies are adjusted, after welding, post-welding point cloud is measured through three coordinates to be fitted with pre-welding data, and part deformation and deviation are quantitatively evaluated in combination with dense point collection and appearance scanning technologies. According to the method, the internal detection blind area of a semi-closed structure is broken through, accurate quantitative analysis of welding deformation is achieved through datum point positioning and multi-dimensional detection, the detection steps are simplified and rapid, the machining precision and detection efficiency of large titanium alloy welding parts are improved, and the method is suitable for the fields such as aviation with the strict precision requirement.

The utility model belongs to the technical field of steel structure welding auxiliary equipment, and particularly relates to a device for preventing welding deformation of a partition plate and a reinforcing ring, which comprises an operating platform, the partition plate is arranged on the operating platform, a welding hole is arranged in the middle of the partition plate, the reinforcing ring is arranged in the welding hole, and two steel angles are arranged above the partition plate and respectively positioned on two sides of the welding hole. The two ends of each angle steel extend out of the partition plate and are fixedly connected with the operation platform through studs. A plurality of vertical plates are further fixedly arranged on the operation platform and arranged in the reinforcing ring in the circumferential direction of the reinforcing ring in an array mode, an adjusting column penetrates through each vertical plate in a threaded mode, and one end of each adjusting column perpendicularly faces the inner wall of the reinforcing ring. The partition plate is fixed above the operation platform through the angle steel, the reinforcing ring is fixed through the cooperation of the vertical plates and the adjusting columns, and deformation or displacement in the welding process of the partition plate and the reinforcing ring is avoided.

The invention discloses a titanium alloy large-size structural part assembling and welding method which comprises the steps that a bottom plate is placed on a welding platform, and the upper surface of the bottom plate faces upwards; the positions of the multiple rib plates are adjusted, the faces, with the inverted-V-shaped chamfers, of the width ends of the rib plates face downwards, and the multiple rib plates are sequentially inserted into the multiple V-shaped grooves; a plurality of arch-shaped clamps are used for fastening the rib plates on the bottom plate; and positioning and welding the inverted V-shaped chamfers of the plurality of rib plates with the plurality of V-shaped grooves respectively. According to the assembling and welding method for the titanium alloy large-size structural part, the assembling difficulty of the bottom plate assembly can be reduced, the assembling precision is further improved, in addition, the problem that laser welding is limited can be solved, and product welding deformation can be reduced.

The invention provides a stainless steel ultra-thick plate laser welding method and device, and the method comprises the steps that a to-be-welded end face of ultra-thick stainless steel is subjected to groove machining, the groove form is a combined form of a large truncated edge and a U-shaped groove, with the groove as a boundary, one end is a first base material, and the other end is a second base material; placing the workpiece according to a corresponding welding method, tightly butting the first base metal and the second base metal, fixing by using a clamp, and then cleaning a to-be-welded surface; the relative positions of the laser beam and the protective gas hood and the base metal are adjusted according to parameters required by the process, and a welding path is programmed or demonstrated; setting welding process parameters; and opening a protective gas valve, starting welding after the welding area is filled with protective gas, and performing front welding, back welding or front and back cover welding. The method can be used for penetration welding of stainless steel super-thick plates or backing welding of deep-groove and thick-truncated-edge super-thick plates, the welding efficiency can be remarkably improved, welding deformation is reduced, and the post-welding machining allowance of high-precision products is reduced.

The invention discloses a flange plate welding deformation compensation device, which relates to the technical field of welding, performs targeted constraint force adjustment on a local heat affected zone in a flange plate welding process by virtue of a synergistic effect of a partitioned flexible constraint assembly and an annular supporting and positioning assembly, and is different from a uniform constraint mode of a traditional integral rigid device. In the process, independent pressure control and air pressure adjustment are carried out through all the subarea air cavities, and in cooperation with real-time feedback of a temperature sensor and a laser displacement sensor, the constraining force of different areas can be dynamically changed, so that the restraining accuracy is improved. According to the method, stepped force control from initial pre-constraint to local reinforcement constraint to cooling and pressure maintaining is achieved, the mode can be matched with the local deformation trend generated by non-uniform heating of the flange plate in a more targeted mode, overall and local deformation of the flange plate in the welding process is effectively restrained, and compared with a traditional overall constraint mode, the method is more accurate.

The invention relates to a manufacturing method of a medium and large size double-layer stainless steel thick plate complex curved surface structural member. The manufacturing method comprises the following steps: respectively forming an outer shell, an inner shell, a rib plate, a supporting column and a taper sleeve; the four side faces of the peripheries of the inner shell and the outer shell, welding grooves and supporting column mounting holes are machined, welding grooves of rib plates are machined, and the rib plates comprise outer rib plates close to the outer side and T-shaped rib plates located inside; a T-shaped rib plate is welded on the inner side surface of the inner shell; carrying out low-temperature annealing treatment on the welded inner shell and the T-shaped rib plate; a taper sleeve is welded on the inner shell, and then a shielding block is welded on the taper sleeve; finish machining is conducted on a groove, welded to the shell, of the T-shaped rib plate; riveting the shell and the supporting column, and fixing by spot welding; welding the shell and the supporting column, firstly performing backing weld by using laser welding, and then performing filling by using TIG (Tungsten Inert Gas) welding; vibration aging; by means of the method, the welding efficiency is improved, welding deformation is reduced, and the overall profile precision is guaranteed.

The utility model discloses a battery box whole vehicle hanging sleeve welding clamp which comprises a clamp base body used for fixedly installing a battery box, a plurality of sets of sleeve positioning pins are arranged on the clamp base body, and all the sleeve positioning pins are arranged on the clamp base body in the mode that the sleeve positioning pins can move up and down through lifting assemblies. The outer diameter of the sleeve positioning pin is configured to be matched with an inner hole of a hanging sleeve, and the sleeve positioning pin is used for positioning the hanging sleeve. Pressing mechanisms with the same number as the sleeve positioning pins are arranged on the clamp base body, and the pressing mechanisms are arranged above the sleeve positioning pins in a one-to-one correspondence manner, so that a stable position relationship is formed between the battery box body and the hanging sleeve. The hanging sleeve has the beneficial effect of reducing the misloading and welding deformation of the hanging sleeve in the batch production process.

The invention relates to the field of angle steel tower foot welding, and discloses an angle steel tower foot welding pressing plate clamp and a welding device.The angle steel tower foot welding pressing plate clamp comprises a base, sliding blocks symmetrically arranged on the base, clamping plates and limiting pieces arranged on the sliding blocks, a rotating rod arranged at the bottom of the base and limiting blocks symmetrically arranged on the rotating rod; the welding device comprises a mounting frame, a first turntable and a second turntable which are rotationally arranged on the mounting frame, a fixed plate movably arranged on the sliding plate, and a positioning rod arranged on the sliding plate; according to the angle steel tower foot welding pressing plate clamp, the pressing plate can be effectively fixed, welding seam deformation during pressing plate welding is prevented, the welding device can fix a steel plate workpiece to the position above the pressing plate, the fixing plate and the sliding plate are contracted and fixed in the four directions of the workpiece, and the fixing mode can be automatically adjusted according to the thickness of the workpiece steel plate; the steel plate workpiece is attached to the bottom pressing plate after being fixed, then the fixing plate can be pulled out, the connecting position can be welded conveniently, and meanwhile the welded tower foot finished product can be taken out of the mounting frame.

The invention provides a welding deformation control method for a high-temperature alloy ring type flame tube wall. The welding deformation control method comprises the following steps: S1, determining a welding seam form; s2, testing the welding deformation of the annular heating wire argon arc automatic welding; s3, the pre-deformation pressure of the flame tube wall is detected; s4, the pre-deformation amount is set; s5, welding pre-deformation is carried out; s6, flame tube wall hot wire argon arc automatic welding; and S7, flame tube wall measurement. According to a welding deformation generation principle, welding deformation is quantified and reasonable deformation compensation is set by exploring and testing a hot wire argon arc automatic welding deformation rule and deformation, so that hot wire argon arc automatic welding deformation prevention control of a thin plate flame tube wall is realized; on one hand, the problems that deformation cannot be controlled after constraint is released, residual stress is large and possibly generated stress cracks are caused by a rigid limiting method are avoided, on the other hand, deformation control can be carried out on parts which cannot be subjected to square limiting, and the machining quality of the thin plate welding flame tube wall is improved.