593 results about "Weld metal" patented technology

An automatic welding system for metal parts, the automatic welding system comprising a welding platform (1), wherein a fixing box (2) is provided on the welding platform (1); a first electric motor (3) is provided in the fixing box (2); a lead screw (4) is provided on an output end of the first electric motor (3); a lead screw sleeve (5) is connected to an outer side of the lead screw (4); a limiting sliding block (6) is provided at the top of the lead screw sleeve (5); a right-angle bracket (7) is provided at the top of the limiting sliding block (6); a telescopic rod (8) is provided at the bottom of the right-angle bracket (7); a welding machine (9) is provided at a movable end of the telescopic rod (8); a supporting plate I (10) and a supporting plate II (11) are provided on the welding platform (1); a right-angle plate I (12) and a right-angle plate II (13) are provided above the supporting plate I (10) and the supporting plate II (11), respectively; both the connections between the supporting plate I (12) and the right-angle plate I (13), and between the supporting plate II (11) and the right-angle plate II (13) are made by means of supporting columns (14); a second electric motor (15) is provided on the right-angle plate I (12); a rotating rod (17) is connected to the right-angle plate II (13) by means of a bearing I (16); fixing seats (18) are provided on both the rotating rod (17) and an output shaft of the second electric motor (15); and a clamping assembly (19) is provided on each fixing seat (18). The automatic welding system solves the problem of being unable to weld metal parts from multiple angles in the prior art.

The invention discloses a method for reducing pores by repair welding of internal defects of a thin-wall aluminum alloy casting. The method comprises the following steps: confirming and marking X-ray positions of the internal defects of the aluminum alloy casting; internal defects at the marked position are cleaned, the defects are required to be completely eliminated, and the cleaning position is smooth and has a certain groove angle; cleaning oil stains and oxidation films at the repair welding position of the casting; preheating the whole casting; welding a reverse support and adding a blowing protection tool; manual argon arc welding filling surfacing is carried out, arc surfacing is carried out from the periphery to the center, and excess weld metal is reserved; removing redundant weld joint materials of surfacing bulges of the casting; x-ray detection is conducted on the repaired casting, whether the pore defects generated after surfacing repair can meet related requirements or not is emphatically confirmed, and if pores gathered on the surface layer of a weld joint exist, the pores can be discharged through a hot pressing method. According to the method, through hole internal defect cleaning, reverse supporting, blowing protection increasing and arc drawing surfacing methods are adopted for conducting surfacing repairing on the internal defects of the casting, the quality of aluminum alloy casting products is guaranteed, and the rejection rate and the production cost are reduced.

This invention discloses a stainless steel welding wire for repair welding of martensitic stainless steel turbine runners, its preparation method, and its application, belonging to the field of metal welding material preparation technology. The chemical composition of the welding wire provided by this invention, expressed as a percentage by weight, is: C≤0.03%, Si: 0%~0.6%, Mn: 5.0%~8.0%, S≤0.010%, P≤0.020%, Cr: 12.5%~15.5%, Ni: 5.0%~7.0%, Mo: 1.0%~2.0%, with the balance being Fe and impurities. The welding wire provided by this invention is suitable for repair welding of Cr13Ni4~6 type martensitic stainless steel, and post-weld heat treatment is not required. The weld metal produced by this welding wire exhibits good strength, plasticity, and toughness, with a tensile strength ≥750MPa, elongation after fracture ≥35%, and impact absorption energy at -40℃ ≥120J.

The invention relates to the technical field of glass welding, in particular to a clamping device for metal-glass laser welding and a welding method. The device comprises a bottom plate, a cover frame and supporting columns connecting the bottom plate and the cover frame, and a lifting part is formed between the cover frame and the bottom plate. A mechanical lifting assembly with an adjusting rocker and a graduated scale is installed on the bottom plate in the lifting part, the lower end is connected with the bottom plate, and the upper end is connected with the machining table to drive the machining table to ascend and descend. And the center of the cover frame is provided with a quartz glass pressing plate plated with a magnesium fluoride antireflection film. A cylindrical metal mounting base coaxial with the glass pressing plate is arranged on the machining table and used for mounting metal to be welded. During welding, the adjusting rocker is rocked to lift the machining table so that to-be-welded glass can make contact with the glass pressing plate, and optical contact is achieved by observing the situation that an interface Newton ring disappears from appearing; the whole clamping device is moved to a laser machining platform, and welding is conducted through a glass pressing plate; and after completion, the machining table is lowered to disassemble the weldment.

The invention discloses a method for predicting the phase content and the hardness of a titanium alloy welding joint, which comprises the following steps of: 1, constructing a welding temperature field model, and correcting a Gaussian cylinder heat source model in welding simulation by comparing the morphology of a welding joint molten pool; 2, a solid-state phase change model is introduced, and a weld metal phase change model is constructed; and step 3, inputting the solid-state phase change model obtained in the step 2.4 into the three-dimensional solid model to obtain the phase content of the welding joint as a field variable in an output hardness field, and predicting the hardness of the joint through the phase content of the welding joint. According to the method, by introducing a solid-state phase change model and optimizing heat source parameters, high-precision prediction of the phase content and hardness of the welding joint is achieved, and rapid optimization of process parameters is guided.

The utility model discloses a main-grid-free back contact battery string and a photovoltaic assembly, the main-grid-free back contact battery string comprises a plurality of back contact battery pieces arranged along a first direction, and the back surface of each back contact battery piece is provided with first fine grids and second fine grids which are alternately arranged along the first direction; the first welding strips and the second welding strips are alternately arranged in the second direction; wherein for the same back contact battery piece, the first welding strip is electrically connected with the first fine grid, and is insulated from the second fine grid; the second welding strip is insulated from the first fine grid and is electrically connected with the second fine grid; welding layers are arranged at the contact positions of the first fine grid and the first welding strip and the contact positions of the second fine grid and the second welding strip; the welding layer comprises a welding metal layer and a bonding glue layer, and the bonding glue layer covers the welding metal layer. According to the utility model, the welding quality of the welding strip can be improved, and the connection stability and reliability of the welding strip and the fine grid are ensured.

The invention discloses an austenitic stainless steel welding wire for a liquid hydrogen storage tank and a preparation method and application of the austenitic stainless steel welding wire, and belongs to the technical field of welding materials and preparation of the welding materials. The welding wire solves the problem that the low-temperature performance of a welding seam is poor when the current welding wire for the liquid hydrogen storage tank is used for welding. The welding wire comprises the following chemical components in percentage by mass: less than or equal to 0.02% of C, 0.4-1.5% of Si, 5.0-7.5% of Mn, less than or equal to 0.020% of S, less than or equal to 0.030% of P, 16.0-22.0% of Cr, 15.0-18.0% of Ni, 2.0-5.0% of Mo, 0.05-0.2% of N, less than or equal to 0.01% of O and the balance of Fe and inevitable impurities. According to the welding wire, deposited metal is low in low-temperature embrittlement tendency, high in low-temperature strength and excellent in low-temperature impact and fracture toughness. The welding wire is used for welding the austenitic stainless steel liquid hydrogen storage tank and is wide in application range, and the mechanical property of deposited metal is good.

The invention provides an ultra-low carbon duplex stainless steel all-position welding flux-cored wire and a welding method thereof.The outer skin of the flux-cored wire is a stainless steel strip, the flux-cored wire is filled with powder, and the powder comprises, by mass, 18-25% of natural rutile, 20-30% of stainless steel powder, 20-30% of stainless steel powder, 20-30% of stainless steel powder and the balance stainless steel powder. 3-5% of sodium titanate; 5-10% of quartz sand; 0.5 to 4 percent of zircon sand; 1-3% of sodium fluoride; 15 to 25 percent of ferromolybdenum; 3-6% of nitrided ferrochrome; 2-4% of electrolytic manganese; 5-8% of nickel powder; 27 to 32 percent of metal chromium; 0.5-2% of magnesium powder; 0.5 to 1.5 percent of bismuth oxide; and 1-4% of silicon iron. The flux-cored wire is used for all-position welding of third-generation duplex stainless steel, welding spatter is small, and weld joint forming is good; the carbon content of a weld joint is extremely low, and through component and welding process control, weld joint metal has strength, plasticity, toughness and corrosion resistance equivalent to those of base metal. And the double requirements of high strength and toughness and high corrosion resistance in the manufacturing fields of submarine pipeline laying, shipbuilding, marine gas field exploitation and the like are ensured.

Provided are a gas-shielded metal arc welded joint of high-Mn steel, which is simple, has high strength and excellent extremely low-temperature toughness, and a method for producing the same. A gas-shielded metal arc-welded joint in which a welding metal is formed from a steel material of a high-Mn-content austenitic steel containing, in mass%, 18.0-30.0% of Mn using a shielding gas and a solid welding wire, the welding metal having a chemical composition containing, in mass%, 0.15-0.80% of C, 0.10-1.00% of Si, 17.0-30.0% of Mn, 0.030% or less of P, 0.030% or less of S, 0.001-0.100% of Al, 0.4-5.5% of Cr, 0.01-3.50% of Mo, 0.01-10.00% of Ni, and 0.0200-0.1500% of N, with the remainder being Fe and unavoidable impurities. Methods of making a gas shielded metal arc welded joint by incorporating a given concentration of nitrogen in a shielding gas, or increasing the N content of a solid wire.

The invention discloses a heat-treatment-free control method for inhibiting hydrogen-induced cracks in ultrahigh-strength steel welding, which belongs to the technical field of welding, and enables weld metal to obtain a low-phase-transition-temperature characteristic and a double-phase structure containing retained austenite under a specific dilution rate window by cooperatively regulating and controlling components of a welding material and welding process parameters. Therefore, preheating-free and post-heat-treatment-free efficient welding of the ultrahigh-strength steel is achieved. According to the method, the volume expansion effect generated by low-temperature martensite phase transformation of weld metal is utilized to actively counteract restrained tensile stress formed by welding cooling shrinkage; on the other hand, the effect of the retained austenite serving as an efficient'hydrogen trap 'is fully played, migration and enrichment of hydrogen to crack sensitive areas such as a heat affected zone or a fusion line are effectively blocked, and finally effective inhibition of hydrogen-induced cracks in ultrahigh-strength steel welding is achieved; the obtained welding joint is free of hydrogen-induced cracks and has the mechanical property level well matched with base metal.

The utility model discloses an ultrasonic wire feeding additive manufacturing device which comprises a base plate, a tungsten electrode welding gun, a wire feeder and an ultrasonic vibration system. The tungsten electrode welding gun, the wire feeder and the ultrasonic vibration system are jointly connected with a positioning rod, and the positioning rod is movably arranged above the base plate. The ultrasonic vibration system is located on one side of the wire feeder and used for generating high-frequency vibration signals and transferring the generated high-frequency signals to a welding metal wire. According to the ultrasonic wire feeding additive manufacturing device, ultrasonic vibration is applied to the welding metal wire, so that a high-frequency vibration signal is transmitted into the molten pool through the welding metal wire, cavitation is generated in the molten pool, beta columnar crystals generated in the solidification process can be effectively broken, and the production efficiency is improved. And the anisotropy problem of the internal structure and the mechanical property in the wire feeding direction and the stacking direction is solved, that is, the performance of an additive manufacturing part is improved.

The invention relates to the technical field of ferrous metallurgy, in particular to a high-strength extremely-low-temperature welding material wire rod and a manufacturing method and application thereof.The manufacturing method comprises the steps that molten steel smelting is conducted according to chemical components and percentages of the high-strength extremely-low-temperature welding material wire rod, a square billet is manufactured in a forging and rolling mode after die casting, the square billet is heated and subjected to heat preservation for 4.5-6 h, and then the square billet is rolled into a first-diameter wire rod; cooling after rolling, uncoiling a wire rod, reducing the diameter from a first diameter to a second diameter through three times of drawing, annealing, reducing the diameter from the second diameter to a third diameter through three times of drawing after annealing, and finally performing finish drawing to a fourth diameter. The high-manganese steel liquid hydrogen storage tank welding material can be used for producing the high-manganese steel liquid hydrogen storage tank welding material, is matched with high-manganese steel welding and is good in forming, the content of Mn in formed weld metal is 24-28 wt%, the situation that due to large-range diffusion of the manganese element, the structure and performance near a fusion line are greatly different is avoided, and the extremely-low-temperature service mechanical performance of the weld metal is guaranteed.

The invention relates to the technical field of storage and transportation pipelines, in particular to a Zr microalloying welding wire for a submerged arc welding steel pipe of a hydrogen transportation pipeline. The Zr microalloying welding wire for the submerged arc welding steel pipe of the hydrogen transmission pipeline comprises the following chemical components in percentage by mass: 0.06 to 0.10 percent of C, less than or equal to 0.30 percent of Si, 0.80 to 1.20 percent of Mn, less than or equal to 0.02 percent of P, less than or equal to 0.01 percent of S, 0.10 to 0.20 percent of Cr, 0.15 to 0.30 percent of Ni, 0.10 to 0.30 percent of Mo, less than or equal to 0.25 percent of Cu, 0.02 to 0.10 percent of Ti, 0.06 to 0.12 percent of Zr and the balance of Fe and inevitable impurities. The Zr microalloying welding wire for the submerged-arc welding steel pipe of the hydrogen transmission pipeline is matched with a low-hydrogen fluorine alkaline flux, and is suitable for double-sided multi-wire submerged-arc welding of the hydrogen transmission pipeline steel pipe with the steel grade of X60 / L415 or below, and after welding, the yield strength of weld metal is 450-550 MPa, the tensile strength is 550-650 MPa, the hardness is smaller than 220 HV10, and the low-temperature impact energy at the temperature of-20 DEG C is larger than 80 J.

To provide a welded joint which has excellent low-temperature toughness, is suppressed in stress corrosion cracking caused by liquefied ammonia, and has 490 MPa or more of tensile strength, and a method for manufacturing the welded joint.SOLUTION: A welded joint has a base metal, a weld metal, and a welding heat affected zone. In the welded joint, each of the base metal and the weld metal has a chemical composition of a specific range, the area fraction of bainite structure from 1 / 4 thickness to 3 / 4 thickness in the sheet thickness direction from the surface of the base metal is 90% or more, Vickers hardness at the 1 mm position in the sheet thickness direction from the surface of the base metal is 210 or less, Vickers hardness in the welding heat affected zone is 210 or less, Vickers hardness in the weld metal is HVW or less (HVW=260-200×Ni), the tensile strength of the base metal and the welded joint is 490 MPa or more, and the absorption energy of the base metal and the weld metal in Charpy impact test is 47 J or more at -40°C.SELECTED DRAWING: None

The application relates to the technical field of medical instrument processing, in particular to a cutting and welding device for medical instrument metal piece processing, which comprises a processing table, a welding main body and a cutting main body, wherein the welding main body and the cutting main body are both installed on the processing table; the welding main body is used for welding metal pieces; the cutting main body is used for cutting metal pieces; a switching mechanism is arranged on the processing table and is used for switching the welding main body and the cutting main body. The cutting and welding process is completed through reciprocating motion, the transfer process can be effectively reduced, manual operation can be reduced, and the working efficiency is improved; the welding process and the cutting process are switched during the conveying of the metal pieces, the time spent on manual process conversion can be effectively reduced, and the processing efficiency can be effectively improved.

The invention relates to the technical field of welding equipment, in particular to multi-angle-acting metal product welding equipment which comprises a bottom plate, a walking structure, a welding structure, an adjusting structure, a clamping structure and a fixing structure. The metal pipes with different diameters and lengths are clamped through the clamping structure, the welding device is suitable for welding work that two metal main pipes are welded into one metal main pipe, the welding stability of the metal main pipes is improved, and the feeding difficulty of the metal main pipes is reduced; the metal main pipes with different lengths and diameters are fixed through the adjusting structures, metal branch pipes are conveniently welded to the metal main pipes, meanwhile, the angles of the metal main pipes are conveniently adjusted, and the welding difficulty is reduced; the walking structure and the welding structure facilitate adjustment of the welding angle and the welding position, multi-angle welding of the metal branch pipe is facilitated, and the welding effect is improved; the fixing structure facilitates feeding of the metal branch pipes, the metal branch pipes can be conveniently transferred to the welding position, the stability of the branch pipes during welding is improved, meanwhile, the spot welding step is omitted, and the welding efficiency is improved.

Provided are: a carbon dioxide gas shielded arc welding wire capable of improving detachability of slag adhered to a bead surface after welding, while maintaining toughness of a weld metal; and a welding method using the welding wire. This welding wire is for use in carbon dioxide gas shielded arc welding performed with positive polarity, and has a chemical composition containing, in mass%, 0.200% or less of C, 0.05-2.50% of Si, 0.25-3.50% of Mn, 0.050% or less of P, 0.050% or less of S, 0.02-3.00% of Al, 0.0100% or less of O (oxygen), 0.0050% or less of Ca, and 0.010-0.100% of REM. In the REM, Nd is contained in an amount of 0.0015-0.0200%, and the remaining portion is Fe and unavoidable impurities. This carbon dioxide gas shielded arc welding method uses the welding wire and involves performing welding with a positive polarity by using, as a shield gas, a gas having a CO2 concentration of 60 vol% or more.

The present invention discloses a welding device for welding a metal basket. The metal basket includes an L-shaped metal bar, a metal hoop, and a bottom ring. The metal bar includes a first bend and a second bend. The welding device comprises: a horizontal moving mechanism; a fixing device disposed on the horizontal moving mechanism, the fixing device being used to fix the metal bar and the metal hoop and capable of twisting the second bend; a first welding mechanism disposed at one end of the horizontal moving mechanism in the conveying direction and used to weld the first bend to the bottom ring; and a second welding mechanism disposed on both sides of the horizontal moving mechanism in the conveying direction and used to weld the second bend to the metal hoop. The welding device proposed by the present invention can automatically weld metal baskets, reducing labor costs.

Provided is a panel type radiator with reinforcing ribs and cooling fins in lintel welding, which includes multiple cooling fins, two oil collecting tubes, multiple reinforcing ribs and multiple welding seams. Each cooling fin is formed by welding two cooling sub-fins oppositely arranged. An edge of a long side of the cooling fin intersects with an outer surface of the reinforcing rib, and a gap suitable for a lintel-shaped weld is provided at an intersection. A welding material droplet weld is formed between an outer edge at an attached position of the long side of the cooling fin and the outer surface of the reinforcing rib, and the shape of the weld is lintel-shaped. The lintel-shaped weld is divided into three regions. The welding material fusion welding connection lintel region is self-fusion welding metal of the welding material.

To provide a welded joint which has excellent low-temperature toughness and is suppressed in stress corrosion cracking caused by liquefied ammonia, and has 570 MPa or more of tensile strength, and a method for manufacturing the joint.SOLUTION: A welded joint is provided, having has a base metal, a weld metal, and a welding heat affected zone, each of the base metal and the weld metal has a chemical composition of a specific range, the area fraction of a bainite structure from 1 / 4 thickness to 3 / 4 thickness in the sheet thickness direction from the surface of the base metal is 90% or more, Vickers hardness at the 1 mm position in the sheet thickness direction from the surface of the base metal is 230 or less, Vickers hardness in the welding heat affected zone is 230 or less, Vickers hardness of the weld metal is HVW or less (HVW=260-100×Ni), the tensile strength of the base metal and the welded joint is 570 MPa or more, and the absorption energy of the base metal and the weld metal in Charpy impact test is 47 J or more at -40°C.SELECTED DRAWING: None

The invention relates to the technical field of welding devices, and provides a welding device for metal structure frame production, which comprises a bearing rack, two supporting racks are symmetrically and fixedly mounted at the top of the bearing rack, a sliding rack is further mounted on the bearing rack, and a welding robot is slidably arranged on the sliding rack through a sliding rack; the device further comprises a swing frame, a clamping rack, a clamping assembly, a waste gas treatment assembly and a swing assembly, the swing frame is rotationally installed between the two supporting racks, the clamping rack is rotationally installed on the swing frame, the clamping assembly is installed on the clamping rack, the waste gas treatment assembly is installed on the swing frame, the swing assembly is installed in one supporting rack, and the swing assembly is installed in the other supporting rack. By means of the technical scheme, the technical problem that in the prior art, when metal structure frames of different sizes are welded, due to the fact that a fixedly-arranged gas collecting hood is difficult to stably collect and treat generated waste gas, the waste gas escapes is solved.

The application discloses an oil tank anti-overflow gate valve welding device and relates to the technical field of welding devices.The application comprises a machining table, a welding gun body is fixed on one side of the top of the machining table through a flexible support, a gap device is arranged on the top of the machining table, a flange fixing assembly is arranged in the middle of the top of the machining table, the gap device comprises a fixing rod, the fixing rod is fixed on the top of the machining table, and a back-shaped frame is fixed on the top of the fixing rod.The gap device is arranged, so that the flange fixing assembly, the arc-shaped sliding plate, the sliding arc plate, the first screw rod, the first screw block, the back-shaped frame, the fixed arc plate and the hinged rod are cooperatively driven to insert four telescopic inclined surface columns into the gap between the flange and the anti-overflow gate valve body, the four telescopic inclined surface columns can keep the gap between the flange and the anti-overflow gate valve body equal, so that the welding area between the anti-overflow gate valve body and the flange is uniform, and the welding metal can uniformly fill the whole gap.

An ultrasonic tab welder, useful for welding metal ribbon to metal sheet, has an ultrasonic stack having a horn configured to include a pair of ends between which are one or more upstanding welding stud surfaces and held by a bracket assembly. The bracket assembly includes a horn holder terminating at either end with U-shaped legs holding either end of the horn and an upper U-shaped legs having a generally horizontal piece carrying a strain gauge. A T-shaped assembly mated with the horn holder U-shaped legs that are carried by a U-shaped holder by a pair of downward holder legs. A pair of bearing assemblies are captured between the downward holder legs, the upper holder U-shaped legs, and the horn holder up U-shaped legs. The horn upstanding welding stud surfaces conformingly mate with the metal ribbon as it is welded to the metal sheet.

The invention provides an ultrahigh-strength steel matched 1000 MPa-grade Co-containing gas shielded welding wire, ultrahigh-strength steel and a welding method. The ultrahigh-strength steel matched 1000 MPa-grade Co-containing gas shielded welding wire comprises the following components in percentage by mass: less than or equal to 0.12% of C, less than or equal to 0.6% of Si, 1.5-3% of Mn, less than or equal to 0.1% of V, less than or equal to 0.08% of Ti, 0.5-1.2% of Mo, 1.5-2.7% of Ni, 1.0-4.0% of Co and less than or equal to 1.1% of Cr, and the atomic ratio of Mo + V to C is 1-1.3. According to the ultrahigh-strength steel matched 1000 MPa-grade Co-containing gas shielded welding wire provided by the invention, the yield strength of deposited metal can be remarkably improved by optimizing the component design of the welding wire and adding a certain content of Co; when gas shielded welding is adopted, weld metal with high yield strength, high tensile strength, high elongation and high impact can be stably obtained, the tensile strength of deposited metal is larger than or equal to 1050 Mpa, the yield strength is larger than or equal to 1000 Mpa, the elongation is larger than or equal to 13%, and the impact energy at the temperature of 50 DEG C below zero is larger than or equal to 47 J.

The invention provides welding equipment for automobile part machining, and belongs to the technical field of welding equipment.The welding equipment comprises a base, a first pipe body and a second pipe body, the base is provided with a welding robot, a cutting table, a driving box and a supporting box, and the welding equipment further comprises a positioning vibration assembly and an air leakage detection assembly; the annular air bag expands from the inner wall to be attached, pipe diameter tolerance is compensated in a self-adaptive mode, end faces are pushed to be tightly attached, and welding quality is improved. When the positioning cylinder rotates, the guide block is matched with the ball to generate periodic vibration, microcosmic plastic deformation of weld metal is caused, welding thermal stress is counteracted, and the sealing performance and durability of the structure are guaranteed; the air bag continuously provides uniform radial support to resist thermal deformation of the pipe fitting, so that the dimensional precision after welding is ensured; the valve structure automatically switches the inflation and detection functions, manual pipe replacement is not needed, and the detection efficiency is greatly improved; the environment-friendly coloring gas constructs an independent detection area through the air bag, a red trace is formed at the leakage position, naked eye or camera recognition is supported, and the technical threshold and cost are reduced.

The invention discloses automatic intelligent welding equipment for building material components, and belongs to the technical field of welding equipment.The automatic intelligent welding equipment for the building material components comprises a working frame, a containing assembly used for containing two to-be-welded metal thick plates is movably arranged on the working frame, and a pushing assembly is movably arranged on the working frame; a transverse moving assembly used for adjusting the position of the containing assembly is arranged on the pushing assembly, a portal frame is arranged in the middle of the working frame, adjusting assemblies movably corresponding to the two metal thick plates to be welded are movably arranged on the portal frame, and laser welding heads are movably arranged on the adjusting assemblies. A swing assembly used for driving the laser welding head to horizontally move in a reciprocating mode is arranged between the adjusting assembly and the laser welding head. The laser welding device has the advantages that the placing requirements of different angles of to-be-welded metal thick plates of different sizes are met, stable and continuous welding is achieved, automatic alignment is achieved, the welding precision is high, welding is uniform, and the structure is reliable.

The utility model discloses an auxiliary tool for grinding the excess weld metal of a welding seam, which is used for assisting a grinding machine in grinding the welding seam of a welding base material. Comprising a movable adjusting platform and a stabilizing mechanism; the grinding machine is mounted on the movable adjusting platform; the movable adjusting platform is used for moving and adjusting the grinding machine, so that the bottom of a grinding piece of the grinding machine is parallel to the outer tangent line of the weld joint. The stabilizing mechanism is connected with the movable adjusting platform and the welding base metal, and the movable adjusting platform is kept on the surface of the welding base metal through the stabilizing mechanism so that the movable adjusting platform can move along the surface of the welding base metal. The angle of the grinding piece of the grinding machine is adjusted through the movable adjusting platform, movable grinding is achieved, the grinding machine is kept stable through the stabilizing mechanism, and therefore the grinding precision and the flat and smooth effect of the grinding face are guaranteed, welding base metal is not prone to being damaged, and follow-up nondestructive testing and anti-corrosion work of welding seams are facilitated; and operation is easy, time and labor are saved, the requirement for operating skills of operators is lowered, and the grinding efficiency is improved.

The application relates to a metal product automatic welding equipment control method and system. For a metal product to be welded, a target image is collected, a defect detection model is used to detect defects of the metal product to be welded according to the target image, and then welding control of the automatic welding equipment is performed according to the defect information. Since the control of the automatic welding equipment considers the defect problem of the metal product, the problem of poor welding effect of the metal product with defects can be solved. Moreover, since the pre-trained defect detection model is trained according to real images and simulation images, the model has strong generalization ability and can be applied to defect detection in various scenes, improving the accuracy of defect detection. Therefore, the technical scheme controls the automatic welding equipment to weld the metal product through defect information with high accuracy, improving the welding effect of the metal product.

The invention discloses a pressure vessel weld reinforcement automatic detection device and detection method, and relates to the technical field of weld detection. The automatic detection device for the surplus height of the welding seam of the pressure vessel comprises a pressing plate which can move downwards in the vertical direction; a plurality of arc-shaped clamping plates are evenly arranged on the inner side of the positioning ring in the circumferential direction, and the arc-shaped clamping plates are stressed to move inwards in the downward pressing process of the pressing plate, so that the outer wall of the connecting pipe is clamped; and the flexible track is arranged on the periphery of the connecting pipe in a surrounding mode, a laser detector is arranged on the flexible track, and the laser detector can move in the circumferential direction of the flexible track and is used for conducting continuous scanning detection on the excess weld metal of the saddle-shaped welding seam. The pressing plate, the positioning column, the limiting plate and the arc-shaped clamping plate form a multidirectional cooperative positioning and clamping mechanism, so that the integrated constraint of axial pressing, radial centering and circumferential limiting of the connecting pipe is realized, and the relative positioning precision and the overall structural stability between the detection device and the connecting pipe are remarkably improved.

The invention belongs to the technical field of welding, and particularly discloses a hardware welding device which comprises a base, a supporting column is arranged on the base, a supporting table is arranged on the supporting column, a supporting ring is arranged on the supporting table, an outer rotating disc is rotatably arranged in the supporting ring and is in a stepped ring shape, and an inner rotating disc is slidably arranged in the outer rotating disc; a hydraulic lifting rod is arranged in the center of the upper wall of the base, a main transmission assembly is arranged on the supporting ring and the outer rotating disc, an automatic dislocation butt joint assembly is arranged on the main transmission assembly, anti-falling shielding assemblies are arranged on the inner rotating disc in an array mode, an initial fixing assembly is arranged on the outer rotating disc, and a laser welding manipulator is arranged on the base. The inner rotating disc and the outer rotating disc are used for driving a metal pipe or a metal rod to be attached to the inner rotating disc to form a circular ring, meanwhile, the two ends of the metal pipe or the two ends of the metal rod are partially overlapped and vertically attached, and discharging of the welded metal pipe or the welded metal rod is achieved through overlapping of the upper end face of the inner rotating disc and the upper end face of the outer rotating disc.