16results about How to "Control welding deformation" patented technology

The invention discloses a welding method for a tower drum and a foundation ring of a wind generating set. Comprising the following steps: a welding preparation stage: carefully selecting and treating materials, strictly debugging equipment and carefully preparing weldments; in the welding implementation stage, an argon-rich mixed gas shielded welding method is determined, welding process parameters are optimized, and the welding processes of a single-section longitudinal seam and a flange, two small-section assembly, large-section assembly length, an inner circular seam and an outer circular seam are accurately controlled; in the welding quality control stage, welding parameters are monitored and adjusted in real time, and appearance inspection after welding, RT ray inspection, mechanical property testing and metallographic testing are strictly conducted; and the production practice and optimization stage is applied to actual production, problems are tracked and solved, and the process is continuously optimized to improve the quality. The method effectively improves the welding quality and the production efficiency, enhances the structural stability, reduces the cost and promotes the development of the wind power industry.

The invention discloses an auxiliary device for welding a large H-shaped supporting beam for a steam generator and a welding method.The device comprises a plurality of sets of supporting units, two wing plates can be supported from the inner side to the outer side, the wing plates are prevented from deforming during welding, a medium-frequency heating rope is fixed to the wing plates through a heating rope fixing piece, and the welding efficiency is improved. In addition, at least two supporting rings are arranged on the outer portion of the supporting unit and used for being matched with a rolling wheel frame to rapidly turn over the large H-shaped supporting beam, and therefore a welding seam can be conveniently welded at a flat welding position.

The utility model provides a welding deformation control structure for a steel plate wallboard of a steel plate concrete shear wall, which is characterized in that a left fixing plate and a right fixing plate are vertically arranged along the front-back direction and are arranged at intervals left and right; the rear side face of the left fixing plate and the rear side face of the right fixing plate are vertically arranged, arranged in the left-right direction and flush with each other, and the rear side face of the left fixing plate and the rear side face of the right fixing plate are located in front of the front side faces of the two vertically-adjacent steel plate wallboards and connected with the front side faces of the two vertically-adjacent steel plate wallboards. The limiting rods are arranged in the left-right direction, located behind the bottom of the rear side face of the upper steel plate wallboard in the two vertically adjacent steel plate wallboards and connected with the bottom of the rear side face of the upper steel plate wallboard, and the limiting rods are located between the left steel column and the right steel column and connected with the left steel column and the right steel column respectively. Welding stress can be released to the maximum extent, and welding deformation can be effectively controlled.

Provided is a manufacturing method of a polygonal basket arch bridge with an inserted ear plate and a tooling thereof, comprising the following steps: tooling adjustment and inspection; assembling a fixed side lower belly plate; assembling a fixed side partition plate; assembling a movable side lower belly plate; assembling a movable side partition plate; assembling a top plate and a bottom plate; assembling a left upper belly plate and a right upper belly plate; assembling an inserted ear plate; box-type welding. The present invention has a simple structure, is easy to use, has efficient positioning, is safe and reliable, has ideal versatility, and is efficient in construction. It provides a reference for the manufacture of similar steel components, solves the problem that the large linear shape of the cross section is difficult to control and the angle of the ear plate is difficult to control; and improves production efficiency, achieves certain economic benefits, has extremely high practical and promotion value, and is suitable for promotion.

The utility model discloses a steel pipe stand column aerial butt-joint device and relates to transportation and hoisting. The steel pipe joint comprises an upper section steel pipe, a lower section steel pipe, a stiffening rib, a stiffening ring, a leveling steel plate, a guide steel plate and a lining pipe, wherein the stiffening ring is horizontally welded on the inner wall of the upper section steel pipe; the stiffening ribs are arranged on the stiffening rings; the lining pipe is vertically arranged on the inner walls of the upper-section steel pipe and the lower-section steel pipe; the upper portion of the guide steel plate makes contact with the inner wall of the upper section steel pipe, and the lower portion of the guide steel plate makes contact with the inner wall of the lower section steel pipe. The upper-section steel pipe and the lower-section steel pipe are welded and fixed. The guide steel plate and the lining pipe are welded in advance, and it is guaranteed that the upper-section steel pipe is smoothly inserted into the lower-section steel pipe and accurately aligned with the lower-section steel pipe; the stiffening ribs and the stiffening rings are welded in the upper section steel pipe in advance, the bearing capacity of the upper section steel pipe and the lower section steel pipe before welding and in the welding process is guaranteed, zero stress is guaranteed in the welding process of the upper section steel pipe and the lower section steel pipe, and the welding quality is improved.

This invention discloses a three-dimensional assembly method for ultra-large span double-layer steel truss bridges, including: setting two rows of steel piers according to the camber of the jig and preventing settlement; using a gantry crane with special clamps to achieve the horizontal and vertical conversion of the truss segments; assembling the first segment in the order of lower bridge deck, side trusses, and upper bridge deck; subsequently, matching and welding the mother segments in the same order; pre-setting vertical anti-deformation during assembly, and welding from the middle section to both sides; uniformly installing anchor pipes after the completion of the large segment assembly in a single round; setting three quality control points during assembly to check the total length, side curvature, truss width, diagonal difference, camber, and anchor point spacing; after passing the test, disassembling and removing the jig, retaining the mother segment for the next round. This application controls welding deformation and cumulative alignment error through multi-segment continuous matching assembly and anti-deformation pre-setting; the subsequent installation of anchor pipes avoids collisions and ensures anchor point accuracy; setting the jig according to the camber and re-measuring in rounds achieves a reliable transition from stress-free to stress-loaded installation.

The invention relates to the technical field of precision structural part welding, in particular to a new energy automobile die-casting aluminum alloy precision structural part welding device which comprises a laser welding head, and the welding device comprises a bearing platform arranged on the side wall of the laser welding head; according to the welding device, the welding position pre-cleaning, welding head protection and welding line cooling integrated welding device is designed, the multifunctional nozzle rotates to the front portion of the laser welding head before welding to convey high-pressure clean airflow, the welding head is arranged in the welding position, the welding head is arranged in the welding position, and the protective gas nozzles are arranged on the side wall of the laser welding head at equal intervals and used for conveying argon to the welding position. After welding, the multifunctional nozzle rotates to the rear portion of the laser welding head to convey low-temperature cooling gas, the gas curtain gas nozzle conveys inert gas during cleaning, a physical barrier is formed between the multifunctional nozzle and the laser welding head, pollutants are prevented from reversely splashing to a laser head lens, and the multiple protective gas nozzles stably convey argon to a molten pool in the whole welding process. And a continuous gas protection layer is formed.

The present invention discloses a universal tooling for assembling and welding a coupler beam. The tooling is symmetrically arranged, and includes a platform, a clamping control unit, a pushing control unit, and a flipping control unit. The platform serves as a substrate, and the clamping control unit, the pushing control unit, and the flipping control unit are respectively arranged as hydraulic devices. The clamping control unit clamps the T-beam and the vertical plate of the coupler beam so as to clamp the coupler beam on the tooling. The pushing control unit is arranged at both ends of the T-beam on the oblique side of the coupler beam, that is, at both ends of the oblique beam, and cooperates with the slide rail to push the oblique beam inward. The flipping control unit is arranged at both ends of the T-beam, and the hydraulic force flips the T-beam outward to realize the reverse deformation before welding. The present invention adopts a hydraulic device for clamping, and has an adjustable reverse deformation function. The constant clamping force and the consistent reverse deformation state can effectively control the welding deformation of the product, and the automation degree is high, and the production efficiency is improved. The universality is high, and a set of tooling can assemble 3 categories and 5 types of coupler beam products.

The invention provides a heavy structure gravity-assisted welding deformation control method and device, and the method comprises the steps: arranging a welding station, and enabling a first workpiece and a second workpiece to be used for forming the orientation of a welding groove of a welding seam or a welding deformation direction to be opposite to a gravity direction; fixing the first workpiece on a stationary plane; a first jacking piece and a second jacking piece are arranged at the two ends of the lower portion of the second workpiece correspondingly and used for jacking the second workpiece; a first pressure sensor and a second pressure sensor are arranged between the first jacking piece and the second workpiece and between the second jacking piece and the second workpiece, and the pressure exerted on the jacking pieces by the second workpiece is displayed in real time. In the welding process, welding deformation of the first workpiece and the second workpiece is measured in real time, the height of the first jacking piece and / or the second jacking piece is adjusted according to the welding deformation, the pressure of the first pressure sensor and the pressure of the second pressure sensor are kept within a reasonable range, and the welding deformation of the first workpiece and the second workpiece is controlled within an allowable range. And welding deformation is effectively reduced.

A gas turbine exhaust pipe diffuser assembly welding tool and method, including an annular tensioning flange, the tensioning flange is composed of two half rings, the outer circumferential side wall of the tensioning flange is connected to a plurality of connecting plates distributed in an annular array, the connecting plate extends outward, and the end away from the tensioning flange is connected to a positioning plate; the connecting plate is in an inclined state, and when the tensioning flange is placed horizontally, the end of the connecting plate connected to the tensioning flange is lower than the end connected to the positioning plate; the front end of the positioning plate is provided with a positioning hole, and the rear end of the positioning plate is provided with a protrusion on the tensioning flange side. Also included are a hole opening template and an inspection template. Through the above structure and the method of assembling and welding the gas turbine exhaust pipe diffuser using the above tool, the assembly size of the diffuser can be guaranteed, the welding deformation can be controlled, and the gap and size of the diffuser body flange after the two halves of the gas turbine exhaust pipe are closed meet the requirements of the drawing.

The present invention discloses a multi-segment cabin forming method and device, wherein the method comprises: S101, installing a boss on the outer side of a spherical head to obtain a spherical bulkhead; S102, numbering all segmented cabins in sequence, and respectively welding spherical bulkheads at both ends of odd-numbered segmented cabins to obtain odd-numbered welded segmented cabins; S103, respectively performing external water pressure tests on all odd-numbered welded segmented cabins, and when all odd-numbered welded segmented cabins meet the external water pressure test, entering S104; S104, welding even-numbered segmented cabins between all odd-numbered welded segmented cabins in the order of numbers to obtain a combined cabin; S105, performing an external water pressure test on the combined cabin, and when the combined cabin meets the external water pressure test, a target sealed cabin is obtained. The method improves the precision of segmented shell docking and effectively controls the problems of large welding volume and shell welding deformation caused by internal fillet welding.

The application relates to a welding control tool in the technical field of welding. The welding control tool comprises a welding platform, a first control area and a second control area are arranged on the welding platform, a welding station for placing a cross beam body is arranged between the first control area and the second control area; a backing plate is installed on the welding platform and located at the middle part of the welding station; a pressing device is installed on the welding platform and located at the first control area and the second control area respectively, and the pressing device is used for pressing the cross beam body at both ends of the welding station. The application solves the problem of large deformation of the cross beam body after welding, improves the production efficiency and product quality of the cross beam body, and saves the labor cost of correction.

The present invention provides an open press machine bed intelligent assembly and welding manufacturing method and system, which relates to the open press machine bed assembly and welding technical field, including dividing the machine bed into a plurality of independent functional modules according to the structural characteristics of the open press machine bed, positioning and clamping each functional module to obtain an assembled open press machine bed; establishing a welding sequence optimization model for the key force-bearing structure of the open press machine bed, and obtaining the optimal welding sequence of the weld by solving the welding sequence optimization model; welding the assembled open press machine bed using the optimal welding sequence, and in the welding process, using phased array ultrasonic imaging technology to identify the weld type and defect characteristics, outputting ultrasonic imaging results of welding defects, predicting the expansion evolution behavior of defects according to the intelligent detection results, forming a quantitative defect evaluation system, and realizing multi-information fusion intelligent evaluation of welding quality.

The invention discloses an inclined angle connecting pipe flange positioning tool and an assembling method.The inclined angle connecting pipe flange positioning tool comprises a flange connecting plate, a positioning plate, a connecting rib plate, a fastening assembly and a flange positioning ring, the positioning plate is welded to one end of the flange connecting plate, and a connecting rib plate is arranged between the flange connecting plate and the positioning plate; the angle adjusting assembly is used for adjusting the angle between the flange connecting plate and the positioning plate, the flange positioning ring is arranged on the flange connecting plate, and the fastening assembly surrounds the flange positioning ring to be arranged on the flange connecting plate and used for being connected with an inclined angle pipe connecting flange. The inclined-angle pipe connecting flange tool is simple in structure and low in manufacturing cost, when the inclined-angle pipe connecting flange tool is used for assembling, the assembling precision can be effectively improved, the applicability is high, the pipe connecting flange assembling efficiency is effectively improved, welding deformation can be effectively controlled, and the product quality is improved.

The application discloses a cylindrical oil storage equipment processing method, which comprises the following steps: firstly, processing process steps, process notches and process bosses respectively at the butt joint of a flange plate and a connecting plate before welding; secondly, adopting electron beam to weld the flange plate and the connecting plate, and adopting copper sleeve protection on the axis of a clamp corresponding to the electron beam influence area to ensure that the axis of the clamp does not deform; and thirdly, adding a positioning process boss as a fixed support point to the outer side of a first mounting base, inserting a coaxial welding mandrel into the inner holes of the first mounting base and a second mounting base and fixing and supporting, fixing and supporting at the positioning process boss, and supporting the outer surface of the second mounting base. The application realizes correct butt joint of the welding surface of the flange plate and the connecting plate, prevents the welding seam from collapsing, guarantees the connecting strength and quality after welding, and ensures that the inner hole coaxiality of the first mounting base and the second mounting base meets the installation precision requirement of an oil level sensor.

The invention relates to a pressure container tank adding and discharging pipeline assembly method which comprises the following steps: step 1, placing a liquid outlet pipeline, a liquid inlet pipeline and a gas phase pipeline of a tank in a simulation assembly tool of a pipeline assembly device, and respectively fixing the outlet end of each pipeline with a first positioning mechanism of the simulation assembly tool; 2, a liquid outlet pipeline, a liquid inlet pipeline and a gas phase pipeline on the pipeline positioning mechanism are clamped and fixed, and welding seams of all the pipelines are welded; 3, taking down from the positioning welding assembly tool, and carrying out welding line radiographic inspection and pipeline cleaning; and 4, the liquid outlet pipeline, the liquid inlet pipeline and the gas phase pipeline are placed in a lifting assembly tool of the pipeline assembly device and are welded to the tank box, and assembly is completed. The interlayer pipeline and the external pipeline are assembled on the special tool, the overall size of the pipeline is effectively guaranteed, convenient conditions are provided for weld joint welding, the weld joint quality is guaranteed, and the manufacturing efficiency is improved.