882 results about "Weld bead" patented technology

The application discloses a kind of thick gauge 430 ferritic stainless steel laser weld low-temperature rollability processing method, comprising: using-1~‑2mm negative defocusing+8~10kW low-power laser welding, the grain of heat-affected zone is refined;NiCr-3 welding wire is preheated to 300~400℃ and carried out hot wire laser welding, reduces cooling rate;Weld is implemented 700 DEG C / 10-12 seconds short time induction annealing, decomposes martensite and releases residual stress;Weld is inducted to ≥50 DEG C before rolling and restores plasticity;Optimize five rack continuous rolling parameter, and the reduction of first rack is reduced to 15%-20%.The application is by welding-heat treatment-rolling whole process synergic control, makes weld low-temperature cracking rate from 2.6 times / month reduce to 1 times below, and-10 DEG C impact toughness is promoted to 22J, cup convexity qualification rate reaches 95%, and annual economic benefit is greatly improved, applicable to the thickness 3.0~8.0mm 430 stainless steel cold rolling production, solves the technical problem that thick gauge 430 stainless steel weld is easy to crack under low-temperature environment.

The present application relates to a kind of quick tool setting method and system for automatic polishing of steel rail weld, method includes: before polishing, in the case where grinding wheel does not rotate, grinding wheel is fed to steel rail, and the position of the feed motor of polishing equipment in the feeding process is recorded in real time, and the current data of feed motor in the feeding process, from the recorded data, find out the position corresponding to the feed motor when the current of feed motor exceeds the set threshold, and determine the rough polishing reference with this position as reference, that is, realize the rough tool setting of polishing reference;During polishing, in the case where grinding wheel rotates, the position of the rough tool setting is used as the starting point of accurate tool setting, grinding wheel is fed to steel rail, and the contact condition of grinding wheel and steel rail is judged by analyzing the current change of polishing motor in real time, to realize the accurate tool setting of polishing reference.The present application constructs the automatic tool setting method based on rough tool setting and accurate tool setting, can convert the tool setting process dependent on artificial into automatic tool setting process.

The utility model discloses a gear box planet carrier automatic welding frock, include: the processing platform, the one side fixed setting of processing platform has the lifting plate, is set up with the installation groove on the processing platform, its characterized in that: the rotating component of rotating planet carrier is arranged in the installation groove, the fixed ware is fixedly arranged on the rotating component, the fixed component for fixing planet carrier is arranged in the fixed ware, the utility model discloses a rotating component drive fixed ware uniform speed rotation planet carrier, and the automatic welding torch is realized continuous even welding, and the welding quality and efficiency are significantly improved, the welding frame position and its own length are adjusted through the electric slide rail, and the clamping plate and electric cylinder are locked in cooperation with the motor drive of fixed component, realize the quick positioning of different specifications planet carrier and the high stability clamping, and the equipment versatility and automation level are greatly enhanced.

The present application relates to the technical field of ultrasonic nondestructive testing and industrial pipeline safety evaluation, in particular to a kind of stainless steel pipeline weld internal defect detection system, comprising: obtaining ultrasonic multi-angle scanning data, extracting waveform features and sound path information;Anisotropic propagation model is constructed, and sound beam deflection correction factor is solved;Generate corrected sound field spatial distribution data;Calculate the multi-view spatial coherence coefficient representing the consistency of signal phase under different sound beam paths;If the multi-view spatial coherence coefficient is greater than the coherence threshold, then determine that the corresponding signal is a defect echo, and reconstruct the defect spatial morphology;Otherwise, it is determined that the corresponding signal is structural scattering noise, and noise suppression processing is performed;Output the quality detection report of target component;The present application solves the missed detection hidden danger caused by geometric constraint and material attenuation, and ensures that the detection result of nuclear power and petrochemical high-risk pipeline under complex physical conditions meets the stringent full-coverage quality standard.

The application discloses a kind of laser welding device and welding method for heat exchanger connecting pipe processing, it is related to technical field, including welding frame, the welding frame outside is provided with welding machine, welding frame bottom is fixedly connected with mobile platform, further include: fixed plate, fixed plate is set to mobile platform mobile end, fixed plate top is provided with two mobile seats, the top of two mobile seats is fixedly connected with fixed ring, the fixed ring inside is provided with clamping mechanism, between one of fixed ring and fixed plate it is provided with screw rod for moving;The welding place of two pipe fittings is arranged in the sealed spherical shell, and the inside of it is filled with protective gas before welding, air is exhausted, oxygen is discharged during welding, reaction of metal and oxygen under high temperature is avoided to generate oxide, the purity and mechanical properties of weld metal are guaranteed.Simultaneously, after air is replaced, nitrogen, water vapor and other gases are not rolled into molten pool, significantly reduce the internal porosity defect of weld.

This utility model relates to the field of welding technology, specifically an electron beam welding fixture for clamping a workpiece. The workpiece consists of a flat portion and a bridge-shaped portion, with the two flat portions respectively located on both sides of the bridge-shaped portion. A groove is provided on the back of the bridge-shaped portion, and a ring of welds consisting of a straight weld and a circular arc weld on opposite sides is provided on the bridge-shaped portion. The fixture includes an "L"-shaped plate composed of a horizontal plate and a vertical plate. The horizontal plate consists of a fixture flat portion and a fixture bridge-shaped portion that respectively mate with the flat portion and the bridge-shaped portion of the workpiece. A protrusion on the fixture bridge-shaped portion mates with the groove on the back of the bridge-shaped portion. A workpiece positioning structure and a workpiece fastening structure are provided between the flat portion of the workpiece and the fixture flat portion. This electron beam welding fixture can reduce welding deformation of special structure workpieces, ensure post-weld dimensional accuracy, ensure the welding quality of arcs and junctions, and meet special welding requirements.

This invention provides a brazing filler metal, a brazing filler metal preparation method, and a rectifier brazing method. The brazing filler metal includes a first brazing filler metal and a second brazing filler metal. The brazing filler metal preparation method involves uniformly mixing high-temperature alloy powder and brazing binder at a mass ratio of 2:1 to 3:1 to form the first brazing filler metal; and uniformly mixing BNi2 powder and brazing binder at a mass ratio of 10:1 to 15:1 to form the second brazing filler metal. By specifying brazing filler metals with a specific particle size ratio and applying different types of brazing filler metals in different zones, defects such as incomplete welding and porosity that are difficult to control in large-gap welds during processing and assembly are solved, improving the welding quality of welds with both large and small gaps, thereby increasing the product qualification rate.

Disclosed are a multi-layer tabs welding method for a battery and a battery. The method comprises conducting continuous scanning welding with laser on multi-layer tabs and a to-be-welded workpiece to form a strip-like or block-like welding bead, and repeating the aforementioned process to form a plurality of discontinuous welding beads at a connection between the multi-layer tabs and the to-be-welded workpiece.

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 application provides a magnetic fixer for workpiece welding and a use method, the magnetic fixer comprises a first suction arm, a second suction arm, an angle adjusting assembly and an angle indicator, the first suction arm and the second suction arm are movably connected with the angle adjusting assembly respectively, the angle adjusting assembly can adjust the inclination angle of the second suction arm relative to the first suction arm; the angle indicator is arranged on the second suction arm and can indicate the inclination angle of the second suction arm relative to the first suction arm; the second suction arm comprises a second base and a second magnetic suction element, the second magnetic suction element is movably connected with the second base and can move along the length direction of the second base to approach or move away from the rotating connection part of the first base and the second base. The application adjusts the included angle between the first suction arm and the second suction arm, realizes the accurate adjustment of the welding angle, overcomes the limitation that the existing product can only realize limited fixed gears, and realizes the quantitative and accurate adjustment of the welding gap at the same time, and changes the traditional experience adjustment mode.

The application discloses a kind of 800 MPa level cold-rolled martensitic steel hot-rolled substrate laser welding method, belongs to the technical field of welding.The application adopts laser butt welding process, the tail of front coil strip steel and the head of rear coil strip steel is formed loop respectively by welding machine pinch roll before and after welding machine, positioning and centering after being carried out to strip head and tail, using double cutting shear is cut to head and tail to ensure the quality of welding machine end surface.The application moves laser from operating side to transmission side by protection gas purging, cooperates with the front and rear heat devices that advance with laser and carries out butt welding, avoids the shortcomings of traditional laser welding high energy consumption and flash welding, reduces production cost and process complexity, improves production speed and weld quality, reaches the purpose that 800 MPa level cold-rolled martensitic steel hot-rolled substrate is welded.

The utility model provides a kind of welding equipment, including mobile robot, welding adjusting device, welding torch and wire feeder, welding adjusting device is installed in mobile robot, for adjusting the position of welding torch and wire feeder;Wherein, welding torch is replaceable, tungsten needle structure, driving assembly and limiting component are all installed in gun main body, driving assembly and tungsten needle structure are movably connected, to make the tip of tungsten needle structure swing in the process of revolution.In the present scheme, mobile robot can adjust welding adjusting device, improve the degree of freedom of welding torch and wire feeder;Driving assembly and limiting component jointly act, make the tip of tungsten needle structure swing when it revolves, destroy the surface tension of liquid solder at weld, expand the welding area of single welding, improve welding efficiency;At the same time, so set, rotating arc evenly distributes heat, reduces welding defect, improves weld strength.

The application discloses a rare earth high-strength dual-phase steel and a forming method and application thereof, and belongs to the technical field of dual-phase steel. The forming method of the rare earth high-strength dual-phase steel comprises the following steps: converter smelting, LF refining, RH refining, adding cerium iron and yttrium iron at the end of the RH refining or before continuous casting, continuous casting, three-stage hot rolling, cold rolling and three-stage annealing. The rare earth high-strength dual-phase steel has good cold stamping formability, high weldability, no rare earth element segregation, no cracking of steel forming, high yield, and can be directly used to prepare automobile bodies after cold stamping forming at normal temperature. There is no rare earth inclusion or coarse carbon nitride brittle bulk agglomerate on the surface layer of the weld, the rare earth element is in a dispersed distribution state, has excellent dispersion strengthening effect, the weld is not prone to cracking, and the mechanical properties of the weld are superior to those of the base material.

The application discloses a nickel-based flux-cored wire for LNG storage tanks and a preparation method and application thereof, and belongs to the technical field of welding material flux-cored wires, and solves the problem that the mechanical properties and toughness of a weld after welding of an existing welding wire used for welding 9Ni steel plates are not matched with the 9Ni steel, thereby leading to low service life of the storage tank. The nickel-based flux-cored wire comprises a core and a cladding layer cladded outside the core; the cladding layer comprises, in percentage by mass, C: 0.015%, Cr: 14.5%-20.0%, S: 0.04%, P: 0.04%, and the balance of Ni and inevitable impurities; and the core comprises, in percentage by mass, Co: 0.5%-2.5%, Cr: 13.0%-18.0%, Si: 0.15%, Al: 0.01%-0.03%, Mn: 0.001%-0.02%, Mo: 15%-17%, W: 10%-20%, Fe: 10%-15%, and the balance of Ni and inevitable impurities.

The application provides a kind of for deformation prevention manufacturing process and positioning mould of cylinder piece, comprising the following steps: step one, determine blank size, adopt split type blanking scheme, after blanking, each single piece arc segment is respectively carried out roll forming processing;Step two, design and manufacture deformation prevention positioning mould;The arc segment after segmented roll forming is assembled one by one in the deformation prevention positioning mould for positioning and spot welding fixation, welding is realized in the welding process by the whole turnover mould to realize the welding of both sides weld;Step three, make special bottom mould platform, a plurality of special platforms for placing shock-absorbing support are designed on the bottom mould platform;Matched production detachable shock-absorbing support;Step four, adopt vertical lathe processing mode, find the welding completed cylinder blank on the vertical lathe workbench;In turn, rough machining and finishing are carried out.The stability of machining precision and surface quality caused by the insufficient rigidity of thin-walled cylinder piece in traditional process is solved.

The utility model relates to hoop seat machining equipment technical field discloses hoop seat laser welding feeding frock, including vibrating disk and feeding groove, the vibrating disk includes disc body and vibrator, is provided with the advanced way in disc body inner wall spiral upwards, the advanced way is sequentially provided with flat advanced way section, baffle screening section and narrow way screening section along the transmission direction, and the place where the advanced way end and feeding groove are connected is equipped with the graded screening section. The scheme is through the combination setting baffle screening section, narrow way screening section and graded screening section, is convenient for unified feeding transmission in the body position of hoop seat, rejects the non - standard hoop seat transmission body position, only leaves the hoop seat with'the first end is in front, and the welding seam is upward' body position and is smoothly conveyed to the welding station, promotes the feeding accuracy, and further promotes the continuity of laser welding production.

This utility model discloses a titanium weld grinding device, relating to the field of titanium processing technology. It includes a base and a lifting assembly mounted on one side of the top of the base, a fixing structure for securing the annular titanium material, and a grinding structure for grinding the welds on both the inner and outer sides. The top of the base has an annular groove, and multiple first sliders are arranged inside the annular groove. A rotating plate is mounted on the top of each first slider, and multiple connecting brackets are mounted on the outer side of the top of the rotating plate. A placement platform is mounted on the top of each connecting bracket. The grinding structure includes a lifting box, which is mounted on the side of the lifting assembly near the rotating plate, and a first servo motor is mounted on one side of the lifting box. This utility model uses the rotation of the annular titanium material to simultaneously grind the welds on both the inner and outer sides of the annular titanium material with grinding columns. This structure, through the simultaneous action of two grinding columns, grinds the welds on both the inner and outer walls of the annular titanium material simultaneously, increasing the convenience of grinding.

The present application relates to the technical field of plate forming, in particular to a kind of aluminum alloy tailor welded blank rotary body component forming method;The method comprises: the aluminum alloy tailor welded blank is placed on preforming mould, at-160~‑190 ℃, the preforming mould is applied to the pressure to make the aluminum alloy tailor welded blank deformation, and first preforming rotary body component is obtained;After solid solution treatment, the first preforming rotary body component is welded, and it is re-welded to obtain second preforming rotary body component;The second preforming rotary body component is placed on final forming mould, at room temperature, the final forming mould is applied to the pressure to make the second preforming rotary body component deformation, and the depth of final forming rotary body component is obtained.The aluminum alloy tailor welded blank rotary body component forming method provided by the present application effectively solves the problem of weld cracking in the forming process of large-size thin-walled component, and the problem of weld performance degradation caused by weld grain growth after solid solution treatment.

A method is provided for forming a large metallic component using a friction stir welded blank. A first and second metallic plate are positioned in an abutting arrangement with corresponding faying surfaces. A backing plate is attached across the abutment. The plates are friction stir welded along the faying surfaces, the friction stir weld including a weld root that terminates in the backing plate. After welding, the backing plate is removed, including the weld root, to create a welded blank. The blank is then formed into a desired component shape, heat treated and aged to produce the final large metallic component. The resulting friction stir weld has a stable microstructure with minimal or no abnormal grain growth during high-temperature forming, heat treatment, or aging.

The present application belongs to the field of weld weight prediction, and particularly relates to a bus steel structure weld weight prediction method and system, which comprises the following steps: reading a three-dimensional model and generating an initial weld path set; filtering, continuity repairing and logical segmentation based on process avoidance features are performed on the path to obtain an effective weld information set; the information set is input into a process decision rule library, and process specification parameters are decided according to structural features, wherein at least the large-section profile specific joint is decided as intermittent welding and the conversion rate is determined; finally, the weld weight is calculated and summarized according to the process parameters and geometric features. The method realizes the full-process automation and intelligentization from the model to the weight prediction, and significantly improves the prediction accuracy and efficiency.

This application relates to the field of welding auxiliary equipment technology and discloses a tooling for angled fillet welds on tube sheets, including an annular seat and a tube sheet component. A vertical plate is mounted on the annular seat via a sliding structure. A rotating shaft is rotatably connected to the outer wall of the vertical plate. A connecting frame is fixedly connected to one end of the rotating shaft. Two fixing rings are fixedly connected to the outer wall of the connecting frame. A threaded connector is fixedly connected to the bottom outer wall of the mounting cylinder. A tooling positioning head is threadedly connected to the outer wall of the threaded connector. An angle adjustment mechanism is installed on the outer wall of the vertical plate. In this invention, the angle adjustment mechanism can precisely adjust and stably maintain the welding torch angle, avoiding fluctuations in the welding torch angle due to the welder's lack of skill. This reduces problems such as unstable current output and heat input differences caused by angle changes, thereby reducing the probability of abnormal cooling rate of the molten pool, reducing welding defects such as incomplete penetration, and improving the welding quality of fillet welds, enhancing the performance and service life of welded components.

This invention belongs to the field of desuperheater technology and discloses a sleeve-type desuperheater and desuperheating method. The device includes a desuperheater body and a cylinder. The desuperheater body includes a nozzle, a nitrogen inlet pipe, and a nitrogen outlet pipe. The nitrogen inlet pipe and the nitrogen outlet pipe are both connected to the nozzle. One end of the nozzle is fixedly connected to the desuperheater connector, and the other end passes through the cylinder and is fixedly connected to a positioning block fixedly installed inside the cylinder. The nitrogen inlet pipe and the nitrogen outlet pipe isolate the steam inside the cylinder from the desuperheating water inside the desuperheater connector through nitrogen. A sleeve is provided between the nozzle and the outer shell. The sleeve includes a cylinder and an annular plate. Nitrogen is introduced into and discharged through the nitrogen inlet pipe and the nitrogen outlet pipe, isolating the steam inside the cylinder from the desuperheating water at the desuperheater connector, reducing heat transfer between hot and cold media, reducing thermal stress caused by temperature difference at the weld joint, and avoiding thermal fatigue damage to the equipment during long-term operation.

This invention relates to the field of low-speed diesel engine manufacturing technology, and discloses a fixed template device and its manufacturing method, as well as a fixed template method for starting air pipes. After the first connecting block and the second connecting block are installed, the surfaces of the two connecting blocks that connect with the flanges are machined. The machining dimensions and angles are determined according to the relative spatial positions of the flanges at both ends of the air pipe, forming the first connecting disc and the second connecting disc. The center point of the flange on the machined surface is then determined, and threaded holes for connection with the flanges are drilled to improve subsequent assembly accuracy. The flanges at both ends of the starting air pipe to be machined are fixed using the threaded holes of the first connecting disc and the second connecting disc, and the template assembly is spot welded. This improves the positioning accuracy of the flanges at both ends of the starting air pipe during template assembly, solves the problem of difficult installation due to manufacturing accuracy issues, reduces on-site matching and rework operations during the installation and use of the starting air pipe due to poor weld quality, and improves production efficiency and product quality.

The utility model relates to the field of pipe fitting welding discloses a pipe fitting welding device, including mutually perpendicular first guide station and second guide station, first guide station and second guide station are slidably provided with the mounting seat for installing pipe fitting, the welding mechanism for welding pipe fitting respectively on, the mounting seat includes the mounting plate of sliding setting in the first guide station, the mounting part of detachable connection in the mounting plate, and the mounting part is used for installing the pipe fitting in the mounting plate, through setting up mutually perpendicular first guide station and second guide station, through the mounting seat, the pipe fitting to be welded is fixed in the mounting seat, and is spliced at the welding, and the second guide station drives the welding mechanism to reciprocate and heat at the weld, can effectively avoid the problem that the local temperature is too high at the weld, thereby improving the welding quality, in addition, through several kinds of detachable mounting parts, different mounting parts can be selected and installed according to different pipe fittings, and the selectivity of pipe fitting welding can be improved.

This invention discloses a process and apparatus for improving the quality of spiral welded pipe welds, relating to the field of spiral welded pipe weld quality control technology. It includes a positioning frame, a weld rolling device, a medium-frequency heating device, and a laser tracking device. The positioning frame is installed on a pre-set steel rail, and the spiral welded pipe passes through the positioning mechanism. The weld rolling device is installed on the positioning frame and located directly above the spiral welded pipe, used for continuous rolling and forming of the weld on the spiral welded pipe. The medium-frequency heating device is installed on the positioning frame and located on one side of the weld rolling device, and is equipped with a heating section, used for preheating the weld on the spiral welded pipe. The laser tracking device is installed on the positioning frame and located on the side of the weld rolling device away from the medium-frequency heating device, used for detecting changes in the weld shape and position. This application has the effects of improving weld quality, increasing weld strength, and improving the quality of the anti-corrosion coating.

This invention provides an intelligent selection method for welding materials in pipeline circumferential weld strength matching. Applied to the field of welding material selection technology, the method includes: acquiring the physicochemical properties data of the base material, service environment conditions data, and proposed welding process data of the pipeline to be welded; performing vectorization processing to construct a feature vector of the matching conditions; retrieving a historical welding case database, extracting several sets of historical condition feature vectors, and obtaining the measured yield strength of the weld and the measured yield strength of the base material corresponding to each set of historical condition feature vectors; calculating the historical strength matching coefficient to determine qualified and unqualified samples; fusing the material property data of candidate welding materials into the feature vector of the matching conditions to generate candidate input vectors, and inputting the candidate input vectors into a trained intelligent matching evaluation model to output the predicted fit; when the predicted fit is greater than the recommended confidence threshold, the candidate welding material is determined as the recommended welding material. This improves the efficiency of welding material selection.

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.