30results about How to "Effective control of welding deformation" patented technology

The invention provides a novel stainless steel side wall structure and a mounting method of a novel stainless steel side wall. The novel stainless steel side wall structure comprises a side wall skeleton. The side wall skeleton is formed by connecting a plurality of cross beams and a plurality of vertical columns in a mutually-crossing mode, and the cross beams and the vertical columns are fixed through mutual inserting; end vertical columns are arranged on the left and right sides of the side wall skeleton correspondingly; door vertical columns are arranged on the left and right sides of doorframes correspondingly; a window upper cross beam is arranged on the upper portion of each window frame, and a window lower cross beam is arranged on the lower portion of each window frame; a waist cross beam is arranged below each window lower cross beam; three lower cross beams are arranged below each waist cross beam; a window upper vertical column is connected to each window upper cross beam;skeleton connecting plates are welded inside the connecting positions of the window upper cross beams and the window upper vertical columns in the side wall skeleton; window lower vertical columns are connected among each window lower cross beam, the corresponding waist cross beam and the three corresponding lower cross beams; and skeleton connecting plates are welded inside the connecting positions of the window lower cross beams and the window lower vertical columns in the side wall skeleton. The cross beams and the vertical columns of the novel stainless steel side wall structure are fixedthrough mutual inserting connection, the deformation problem caused by welding of a skeleton is solved, the production cost is saved, and the assembly production efficiency is improved.

The invention discloses an extensible and retractable inner supporting tool. One end of a left-handed screw is installed in a screw installation hole in the plane geometric center of a supporting plate, and the left-handed screw is in rotating fit with the screw installation hole. A left-hand thread at the other end of the left-handed screw is installed in a threaded hole in the center at one endof a sleeve. One end of a right-handed screw is installed in a screw installation hole in the plane geometric center of the other supporting plate, and the right-handed screw is in rotating fit with the screw installation hole. A right-hand thread at the other end of the right-handed screw is loaded in a threaded hole in the center at the other end of the sleeve. The extensible and retractable inner supporting tool has extending and retracting functions; in a shortened state, the extensible and retractable inner supporting tool can be put into a shell and then extends to support a cylinder, rigid restraining to the cylinder is achieved, and the welding deformation is reduced; and by means of stress relief annealing heat treatment through the belt tool, deformation stress is eliminated, andtherefore the cylinder circular degree after welding is guaranteed, and the circular degree of the shell is reduced to 2.5 mm from 10 mm.

The invention discloses a control system and method for weld-forming of a thin-walled pipe. The control system comprises a welding tool used for weld-forming of the thin-walled pipe and a quality control device used for controlling the quality of longitudinal joints, welded by the welding tool, of the thin-walled pipe. The method comprises the following steps of 1, assembling the welding tool and the to-be-welded thin-walled pipe; 2, debugging the welding tool; 3, initializing the quality control device; 4, starting welding the to-be-welded thin-walled pipe; 5, acquiring real-time welding data of the thin-walled pipe; 6, judging whether the real-time welding data of the thin-walled pipe are abnormal or not; 7, judging whether the thin-walled pipe is defective or not; 8, judging whether the thin-walled pipe is deformed or not; and 9, carrying out stress relaxation on the thin-walled pipe. According to the control system and method for weld-forming the thin-walled pipe, the welding tool provides stable protective gas flow and double cooling measures for the to-be-welded thin-walled pipe, the welding quality of the to-be-welded thin-walled pipe is monitored in real time through the quality control device, so that the residual stress is eliminated, the fatigue life is prolonged, and the stress corrosion resistance is improved.

The invention specifically relates to a welding deformation control method based on high-energy ultrasonic treatment. The welding deformation control method based on the high-energy ultrasonic treatment comprises the following steps that (1) an ultrasonic transducer is arranged at a appropriate position of a workpiece to be welded; (2) the ultrasonic transducer and an ultrasonic power supply are connected; (3) ultrasonic processing parameters are set; (4) the workpiece is welded; and (5) ultrasonic processing is conducted, specifically, a joint is still in a high temperature state after weldedmetal solidified, the ultrasonic power supply is started to drive the ultrasonic transducer, and ultrasonic energy is injected into the workpiece welded joint and a heat affected zone, and work is stopped until set processing time. According to the welding deformation control method based on high-energy ultrasonic treatment, the existing welding technology and process of the product is not changed, the equipment is simple, the technology is concise, the welding deformation can be effectively controlled by adjusting three parameters of an ultrasonic frequency, power and processing time, and meanwhile stress concentration can be eliminated and even stress distribution is lowered.

The invention discloses a surface-covered mounting method for a dual-phase stainless steel water tank of a nuclear power station and a welding process, and belongs to the technical field of nuclear power station building. Wall surface covering adopts modularized manufacturing and mounting, and a reasonable wall surface-covered mounting sequence, so that mounting deformation of a surface-covered plate of the stainless steel water tank is reduced, and efficiency is improved; bottom plate surface-covering is performed after a wall surface is covered and is put in place, a bottom plate is fixed through rigidity of a pre-embedded plate, and a reasonable welding process sequence is adopted, so that effective control on bottom plate welding deformation can be realized; in a water tank mounting and welding process, an FCAW automatic or semi-automatic welding process greatly improves construction efficiency, and the construction period is shortened. The mounting method for the dual-phase stainless steel water tank of THE nuclear power station and the FCAW automatic or semi-automatic welding process are suitable for surface-covered mounting of a large dual-phase stainless steel water tank of the nuclear power station and a medium-thickness steel plate with a similar structure.

The invention provides a tailor-welding device and tailor-welding method for an inner-layer connecting ring of a low-temperature wind tunnel. An elliptical frame mold is of an elliptical-ring-shaped twenty-four-sided structure and is used for being connected to the outer circumferential wall of the elliptical-ring-shaped inner-layer connecting ring in a sleeving mode; an elliptical frame is of an elliptical-ring-shaped structure and is arranged at the central position in an inner cavity of the elliptical frame mold, the central point of the elliptical frame coincides with the central point of the elliptical frame mold, the long axis of the elliptical frame coincides with the long axis of the elliptical frame mold, and the short axis of the elliptical frame coincides with the short axis of the elliptical frame mold; one end of a rigid supporting assembly is welded to the outer circumferential wall of the elliptical frame, and the other end of the rigid supporting assembly abuts against two sides of each weld joint on the inner-layer connecting ring; and a fastening assembly is installed in the middle of each set of edges in the elliptical frame mold and used for fastening the inner-layer connecting ring. With the device and the method, the assembly precision of the inner-layer connecting ring is effectively improved, and the deformation in the welding process is controlled.

The invention discloses a tool for combined welding of a skirt board frame of a rail vehicle. The tool comprises a rectangular supporting frame for supporting and locating the skirt board frame, and chucks for fixing the skirt board, wherein windows for welding operation are arranged at the upper ends of four rectangular corners of the rectangular supporting frame, and the chucks are arranged on two outer sides of each rectangular corner. According to the tool for combined welding of the skirt board frame of the rail vehicle, a sideboard of each skirt board frame is located and supported through the rectangular supporting frame; the sideboard of each skirt board is tightly pressed on the rectangular supporting frame through the chucks; four rectangular corners of the rectangular supporting frame are provided with the windows for the welding operation, and an operator can conveniently carry out the welding operation. The sideboard of each skirt board frame is fixed on the rectangular supporting frame and then welded according to the size and position of the finished product of the skirt board frame, so that size deviation and welding deformation when the skirt board frame is welded can be effectively controlled through the tool and the welding quality can be ensured.

The invention relates to the technical field of electron beam welding, in particular to an electron beam welding machining method for a lock-bottom-free film disc type part. An annular protective sleeve is added and electron beam welding process parameters are appropriate, so that the weld joint quality is guaranteed, welding deformation is effectively controlled, and good weld joints are obtained. By the adoption of the method, products are all qualified through flaw detection after welding, and a lock-bottom-free film disc meets the requirements that the roundness of the lock-bottom-free film disc is smaller than or equal to 0.1 mm and the parallelism of the lock-bottom-free film disc is smaller than or equal to 0.1 mm. The method is high in applicability and can be applied to various lock-bottom-free electron beam welding products.

A novel industrial type gas turbine brush gas seal is formed in the manner that two symmetrical pressure bearing plates in upright ring shapes are welded at the top ends; brush wire bundles which are closely and evenly arranged are arranged in the middles of each pressure bearing plate body; a sunken cooling groove body is formed in the top end of each pressure bearing plate body; and a flow guiding piece is arranged on one side of the upper portion of the middle of each pressure bearing plate body. The novel industrial type gas turbine brush gas seal effectively reduces the production cost of manufacturers; and because the manner that the brush wire bundles, the pressure bearing plates and the flow guiding pieces are welded as a whole is adopted, the welding deformation of the brush gas seal caused when a welding part is too thin in the welding process is effectively controlled, and meanwhile, the overall strength of the brush gas seal is improved; cooling grooves formed in the pressure bearing plates guarantee the welding convenience, the problem that a sealing piece deforms and loses efficacy due to high temperature can be prevented, and therefore the service life of the sealing piece is prolonged; and meanwhile, the problem that secondary machining is needed because part assembling is difficult is avoided, and machining work procedures are reduced.

The utility model relates to an LNG ship gas dome safety valve pipe accessory assembling and positioning tool. The tool is characterized in that a safety valve pipe accessory comprises a first end and a second end, the first end of the safety valve pipe accessory is connected with a gas dome through a first flange, and the second end of the safety valve pipe accessory is connected with a ventilation mast pipe accessory of a liquid cargo tank through a second flange; and the positioning tool comprises a tool panel, wherein a first through hole matched with a bolt hole of the second flange is formed in the tool panel; and a supporting assembly used for supporting the tool panel. Through the simple and convenient design scheme and low manufacturing cost, a manufacturer can conveniently and effectively assemble, position and weld by using the tool, so that the assembling and positioning error is reduced, the welding deformation is reduced, the potential safety hazard is eliminated, and the product quality is improved.

The invention discloses a manufacturing method of a fence structural component of a high-strength launching silo. The manufacturing method comprises the steps that firstly, a first anti-deformation supporting tool and a second anti-deformation supporting tool are welded along the inner wall of a barrel; then a buffer bracket is correspondingly assembled on one side of the barrel and a releasing-tensioning device mounting seat is correspondingly assembled on the other side of the barrel; channel steel tools are arranged on the outer sides of the buffer bracket and the releasing-tensioning device mounting seat; the buffer bracket and the releasing-tensioning device mounting seat and the barrel are welded; then a guide cylinder mounting seat, a bearing pedestal mounting seat plate, a buffer bracket web plate and various types of rib plates are sequentially welded and locked; subsequently, a cover-opened-in-place stop block is welded and a guide cylinder mounting panel is locked sequentially; and finally the first anti-deformation supporting tool and the second anti-deformation supporting tool are cut out and the inner circle of the barrel is subjected to overlay welding. Through the design, welding deformation of the fence structural component can be effectively controlled and the welding accessibility is ensured.

The invention discloses an assembly welding device, an assembly welding method and a Charismas tree guide frame. The assembly welding device comprises three parts: a base part, a middle supporting assembly and a top supporting assembly, wherein the assembly welding device is of a split structure; the base part is separately arranged (is not connected with the middle supporting assembly and the topsupporting assembly); the top supporting assembly is fixedly connected to the upper part of the middle supporting assembly. After assembly welding of the Charismas tree guide frame is finished, the middle supporting assembly can be hoisted away from the top supporting assembly by simple detaching, and then the Charismas tree guide frame is hoisted away; the assembly welding process is convenientand quick, and complex detaching of a tooling is avoided, so that production cycle is shortened to a great degree and production efficiency is improved.