516results about "Workpiece edge portions" patented technology

The invention provides a friction welding method and a connection structure. A conical bonding pad connects a far-end component and a near-end component with a conical hole for accommodating the conical bonding pad; the method comprises the following steps: clamping the clamping end; during primary forging, the clamping device is controlled to drive the conical bonding pad to rotate for the primary forging time length at the primary forging rotating speed, the pressure jacking device jacks the contact end towards the direction of the far-end component at the primary forging pressure, and the bonding pad rubs against the far-end component; the initial forging rotating speed is 5%-45% of the theoretical range, the initial forging pressure is 55%-95% of the theoretical range, and the initial forging duration is 5%-45% of the theoretical range; during finish forging, the rotating speed of the clamping device is controlled to be zero, the pressure jacking device jacks the conical bonding pad towards a far-end component for finish forging duration and extrudes melt under finish forging pressure, the finish forging pressure is larger than the initial forging pressure, the welding power is reduced in a low-speed short-time and certain-high-pressure mode, the welding equipment is made to meet the requirements for miniaturization and light weight, field operation can be conducted, and the welding efficiency is improved. The melt is extruded from the side face of the conical bonding pad, impurity discharge is promoted, and the welding quality is improved.

The invention provides a Q890qE and Q420qE bridge steel flat butt joint combined welding method which comprises the following steps: step 1, grinding and derusting grooves of upper and lower asymmetric double-sided V-shaped joints to expose metallic luster; 2, preheating is conducted in an electric heating mode; 3, a solid welding wire CO2 gas shielded welding is adopted for backing welding of one weld joint on the upper V-shaped deep groove side; 4, welding seams are filled in the side of the V-shaped deep groove through submerged arc automatic welding, and the filling thickness is about 1 / 2 of the groove depth; 5, back gouging is conducted on the back face through carbon arc air gouging, and a carburized layer is polished and cleaned till metallic luster is exposed; 6, the V-shaped shallow groove is welded and filled; seventhly, the submerged arc automatic welding continues to weld the remaining weld joints of the V-shaped deep groove till the remaining weld joints are filled; and 8, postweld heat treatment is conducted. According to the method, a combined welding method of solid welding wire CO2 gas shielded welding bottoming, submerged arc automatic welding filling and capping is adopted, the problems of welding cold cracking and early joint breakage of the dissimilar bridge steel are solved by combining joint design, and the mechanical properties of a welding seam and a fusion area meet the standard requirements.

The invention relates to the technical field of welding processing equipment, and discloses a positioning welding tool for processing a solar photovoltaic support, the positioning welding tool comprises a base, a sealing cover is arranged on the base, and a sealed processing space is formed in the sealing cover and the base; and the opening door is arranged in the middle of one side of the sealing cover and used for a worker to feed in the photovoltaic support before machining and take out the photovoltaic support after machining is completed. By adding and arranging the preheating and slow cooling mechanism, before the solar photovoltaic bracket is welded, the mechanism uniformly preheats the welding end part of the bracket, so that the binding force between a zinc coating and a base material is weakened under the thermal action, and the subsequent efficient removal of the zinc coating on the surface of the bracket is facilitated; meanwhile, base material damage or zinc layer residue caused by forced stripping is avoided, the internal stress of the material can be preliminarily released in the preheating process, the deformation risk caused by shock heating in the welding process is reduced, and the geometric stability of the support structure in the machining process is ensured.

An assembly and method for preparing a pipe elbow for welding. The assembly has a cone clamping sleeve assembly adapted to be inserted into an end of the pipe elbow and a faceplate assembly removably affixed to the cone clamping sleeve assembly. The cone clamping sleeve assembly has a face at one end thereof. The face has at least one locating hole and at least one screw hole. The faceplate assembly has at least one locating pin receivable by the locating hole of the cone clamping sleeve assembly. The faceplate assembly has a captive screw threadedly received by the screw hole. The faceplate assembly has at least a pair of centering pins positioned at diametrically opposed locations on a faceplate. The centering pins are radially adjustable and adapted to bear against an inner diameter of the end of the elbow.

A plant for manufacturing a large floater (10), in particular for wind farms, comprises a starting station (110), a forming station (120), an outlet bench (140), a milling station (150) and a calendering station (160). The calendering station (160) comprises a verticalization device (164) for arranging the sheet (130) in an upright manner, and a vertical-axis calender machine (166) for bending the upright sheet (130) and forming a collar (170) for the floater (10) with vertical axis. The inner side surface of the collar corresponds to the planar face of the sheet.

The skeleton member includes a cut and a welded portion, and the cut is formed in the skeleton member and extends along the ridge line so that the ridge line is exposed. In addition, in the welded portion, the skeleton member is welded to the skeleton member along the cut along the ridge line by fillet welding. In this way, no welded portion is provided on the ridge line. Since the rigidity in the ridge line portion is higher than the periphery and the shared load is also large, it is possible to reduce cracking starting from the ridge line portion by not providing the welded portion in the ridge line.

An electric resistance welded pipe or tube comprises a weld portion in a pipe or tube longitudinal direction, wherein a maximum value of a wall thickness distribution of the weld portion is less than or equal to 1.05 times an average wall thickness of the electric resistance welded pipe or tube, a width of a weld metal in the weld portion in a circumferential direction is 1 μm or more and 800 μm or less over an entire thickness of the electric resistance welded pipe or tube, and a ratio of a maximum value to a minimum value (=maximum value / minimum value) of the width of the weld metal is 1.0 or more and 2.5 or less.

The invention provides a vertical position welding method for bridge steel. The vertical position welding method comprises the steps that 1, a groove is manufactured, specifically, the X-shaped groove without a truncated edge is manufactured in a vertical position mode through a flame cutting technology; and the groove is polished and derusted according to requirements. 2, preheating, wherein the bridge steel is preheated to 75 DEG C in an electric heating mode; and 3, welding, wherein solid welding wire argon-rich mixed gas shielded welding is adopted for vertical position welding. And 4, post-weld heat treatment is conducted, specifically, after welding is completed, post-heat treatment is conducted at 200-250 DEG C through a crawler-type heater, and slow cooling is conducted to the room temperature after heat preservation is conducted for 3 hours. By researching and developing a welding material and a welding process matched with the Q890qE high-strength bridge steel, the technical problem of quality of a Q890qE vertical position butt welding seam is solved. Welding forming is stable, efficiency is high, deformation is small, the appearance is good, strength and weather resistance are balanced, the service life is long, and economical efficiency and environment friendliness are both considered; the method is especially suitable for engineering scenes with strict requirements on strength, toughness and durability such as long-span bridges and alpine region bridges, and has remarkable economic advantages and social value.

The invention discloses a large-pipe-diameter nickel base alloy composite pipe welding method and an auxiliary device.Each composite pipe comprises a composite layer and a base layer covering the composite layer in a sleeving manner, the welding method comprises the following steps that firstly, the to-be-welded ends of two sets of composite pipes are machined, X-shaped grooves are formed in the positions of the to-be-welded ends of the two sets of composite pipes, and the to-be-welded ends of the two sets of composite pipes are welded; then the X-shaped groove is polished through an auxiliary device; secondly, the two sets of composite pipes are assembled in a butt joint mode, and a base layer is welded according to the sequence of bottoming, filling and capping; and thirdly, the transition layer and the composite layer are sequentially welded according to the bottoming, filling and covering sequence. According to the method, the X-shaped groove is adopted, the double-face welding mode is adopted, argon gas back face protection is not used in the whole welding process, compared with a traditional welding method, the welding material cost is saved, the welding work efficiency is improved, a large amount of argon gas is saved, the welding steps are simplified, the welding material cost is low, the number of welding layers is small, the construction period is shortened, and energy conservation and emission reduction are achieved.

The utility model discloses a hollow shaft blank friction welding port which comprises a first hollow shaft and a second hollow shaft, the end face of the first hollow shaft is a first welding face, the end face of the second hollow shaft is a second welding face, the first welding face corresponds to the second welding face, a first prefabricated groove is formed in the inner circumference of the first welding face, and a second prefabricated groove is formed in the inner circumference of the second welding face. A first prefabricated groove is formed in the inner circumference of the first welding face, a second prefabricated groove is formed in the inner circumference of the second welding face, the first prefabricated groove corresponds to the second prefabricated groove, and through the asymmetric structure of the first prefabricated groove and the second prefabricated groove, different first hollow shafts and second hollow shafts are correspondingly adjusted in a targeted mode. The inner circumferential diameter of the plastic metal and the inner circumferential diameter of the second hollow shaft are kept consistent, the plastic metal is prevented from protruding to form large flashes, the speed that the plastic metal on the two sides is converted into high circumferential expansion due to opposite pressure in the friction heat production stage is effectively reduced, and the filling rate of the plastic metal is improved.

A method for improving the welding performance of an aluminum alloy thick plate comprises the following steps that a Y-shaped groove is formed in an aluminum alloy plate, and the Y-shaped groove is provided with N steps; rectangular pulse wave TIG welding is adopted for conducting backing welding on the truncated edge of the bottom of the Y-shaped groove; carrying out cladding on the side part of the groove by adopting rectangular pulse wave TIG (Tungsten Inert Gas) welding; the groove is subjected to filling welding through direct current TIG welding, and after the step position of each step is completely covered, next filling welding is conducted; by adopting the welding method for welding the thick aluminum alloy plate and adopting a multi-pass welding mode, the effect of solid solution strengthening on a welding line of the last pass is achieved, a large amount of heat input at a time is dispersed into multiple times of input, the effect of reducing the peak temperature of a material is achieved, and therefore the strength and the ductility of a connector are further improved on the whole.

A three-dimensional vapor chamber assembly structure includes a housing, heat pipes, a capillary member and a working fluid. The housing includes a first housing plate and a second housing plate, a cavity formed between the first and second housing plates, and through holes formed on the second housing plate. The heat pipe penetrates through the through holes and includes an open end having a flange formed thereon. The flange includes lateral and longitudinal surfaces. The lateral surface of the flange is attached to the second housing plate via a welding layer, and the longitudinal surface of the flange is attached to the second housing plate via a welding product. The capillary member is arranged inside the cavity and attached to the housing. The working fluid is arranged inside the cavity. Accordingly, a firm and robust vapor chamber structure capable of preventing welding material from entering the cavity is achieved.

A method of manufacturing a cylindrical cargo container includes: providing a plurality of rigid panels together formable into a cylindrical shell; forming a first semi-cylindrical shell from a first set of the panels; forming a second semi-cylindrical shell from a second set of the panels; forming the cylindrical shell from the first semi-cylindrical shell and the second semi-cylindrical shell; forming a collar conformably encircling the cylindrical shell; constricting the collar to compress joints formed at abutting edges of pairs of adjacent panels; rolling the cylindrical shell and collar to bring respective joints of pairs of panels to a lower position, and welding an inside seam of the joint when at the lower position; removing the collar from the cylindrical shell; and rolling the cylindrical shell to bring respective joints of pairs of panels to an upper position, and welding an outside of the joint when at the upper position.

The utility model provides girth welding equipment integrated with an induction preheating and stress relief mechanism, which relates to the technical field of girth welding and comprises a worktable, a sliding rail is arranged at the top of the worktable, and a driving tailstock and a rotary clamping mechanism are arranged on the rail in a matching manner to realize coaxial clamping of workpieces; the side face of the workbench is slidably connected with a movable supporting table, the top of the workbench is provided with a supporting column and an induction preheating device, the supporting column is adjustably connected with a welding device and a stress relief device, and the welding device, the stress relief device and the movable supporting table synchronously move along with the movable supporting table. During working, a workpiece is firstly clamped and welded after induction preheating, stress is finally relieved in real time, and the rotary clamping mechanism drives the workpiece to rotate. The device integrates multiple functions, solves the problem of process dispersion of traditional equipment, prevents cracks through accurate preheating, relieves stress in real time, improves stability, and guarantees welding precision through coaxial clamping.

The invention relates to a method for producing a workpiece (10) having a chamfer (20), in which a good part (18) is separated from a scrap skeleton (14) by cutting a blank (16) using at least one laser beam, the good part (18) is cut into a waste part (12) and into the workpiece (10) by means of the laser beam for production of the workpiece (10), whereby the chamfer (20) is formed, wherein, before complete separation from the workpiece (10), the waste part (12) is secured (24) to the workpiece (10) and / or the scrap skeleton (14), in a region that is already separated from the workpiece, by means of at least one welded joint (24).

The invention relates to a welding method based on a groove reconstruction strategy. A process pipeline is used for being installed on a rotary table of a positioner, a welding robot is electrically connected with a controller through a control device, the positioner is electrically connected with the controller, and a tracking sensor is arranged at the tail end of a mechanical arm of the welding robot and fixedly connected with a welding gun on the welding robot. The tracking sensor is electrically connected with the controller; the welding method comprises the steps that a groove of the process pipeline is reconstructed through the controller; the multi-layer and multi-pass welding is planned through the controller; backing welding is conducted on the groove of the process pipeline; after backing welding is completed, multi-layer and multi-pass welding is conducted on the groove of the process pipeline; through groove reconstruction and conversion between the weld joint section and the laser plane feature points, the influence of coaxiality errors, ovality errors, groove cutting errors and installation errors of the process pipeline on the welding quality is better reduced, meanwhile, the influence of pipeline thermal deformation on the welding quality in the welding process is solved, and the welding precision and the weld joint quality are improved.

The utility model provides a dissimilar steel strip isolating layer submerged-arc welding structure which comprises a first base material and a second base material, the edges of the first base material and the second base material are subjected to the same beveling operation, specifically, the front side and the back side of each plate end are each provided with a beveled edge, the plate ends are assembled to form an X-shaped beveled edge, and a truncated edge is reserved in the middle of each beveled edge; and surfacing the edge of the first base material to form a first welding body with the same thickness, butting the edges of the first base material and the second base material, and welding to obtain a second welding body. According to the method, subsequent submerged-arc welding is converted into similar steel welding through the isolation layer structure, and the risk of cracking caused by interaction of high residual stress and brittle structures after dissimilar steel welding is eliminated; and meanwhile, the problems that a wide recarburization and decarburization layer is generated due to carbon diffusion migration in direct welding of dissimilar steel, and cracking is caused due to serious ferrite embrittlement of a decarburized wide ferrite belt under long-time heat treatment and high-temperature operation are solved.

A high-heat-input combined welding method for thick-walled high-strength steel includes following steps. First, a steel plate to be welded is machined into an asymmetric double-sided V-groove, with a depth of a front groove ranging from 30 mm to 40 mm. Then, electrogas welding is used to fill and weld the front groove, with a single-pass heat input controlled below 300 KJ / cm. Finally, a back groove is filled and welded, ensuring that the single-pass heat input for the back groove does not exceed that of the front groove. By adopting an asymmetric double-sided V-groove, the steel plate to be welded is divided into front and back sections. The depth of the groove is restricted to limit the heat input during filling welding.

The utility model discloses a battery monomer (20), a battery (1100) and a power utilization device, the battery monomer (20) comprises a shell (100) and an end cover (200), and the shell (100) is provided with an opening; the end cover (200) is welded at the opening and forms a welding structure (300), the welding structure (300) comprises a plurality of first welding seams (310), the first welding seams (310) and the edge part (210) of the end cover (200) are correspondingly arranged, and the plurality of first welding seams (310) are connected to form a closed annular structure so as to be annularly arranged outside the end cover (200); every two adjacent first welding seams (310) are connected in a laminated mode at the corresponding corner (220) of the end cover (200). According to the battery monomer (20), the strength of the welding structure (300) at the corner (220) of the end cover (200) is good, the strength of the welding structure (300) between the shell (100) and the end cover (200) is good, the welding quality is high, and the structural reliability of the battery monomer (20) is good.

To facilitate formation of an appropriate gap between an end face of a general part of a first plate and a top face of a bent part of a second plate in welding in a welding method for forming a weld bead between the end face of the general part of the first plate and the top face of the bent part of the second plate.SOLUTION: A weld joint manufacturing method in the present disclosure includes: a process in which an end face of a general part 11 of a first plate 10 is brought into contact with an irregular shape part 24 of a second plate 20, thereby positioning the first plate 10 and the second plate 20; and a process in which a weld bead is formed between the end face of the general part 11 of the first plate 10 and a top face of a bent part 23 of the second plate 20.SELECTED DRAWING: Figure 3

To provide a joint structure which can inhibit reduction of joint strength even when a brass which contains bismuth (Bi) in place of lead and stainless steel are brazed with a brazing material, and to provide a manufacturing method of the joint structure.SOLUTION: A joint structure in which a stainless member and a brass member are brazed, includes a layer structure in which the stainless member, a first brazing material layer, a Bi barrier layer, a second brazing material layer, and the brass member are sequentially arranged in a laminar manner. The brass member contains Bi, and the Bi barrier layer inhibits Bi in the brass member from being moved to the first brazing material layer by brazing of the stainless member and the brass member.SELECTED DRAWING: Figure 1

This invention discloses a plasma arc welding method for titanium / steel with pre-filled powder, belonging to the field of arc welding. The invention involves a bevel on the steel plate side of the weld joint, where a multi-element alloy powder is pre-filled. This multi-element alloy powder is a copper-titanium-iron-nickel-niobium alloy powder, with the following mass percentages: Cu: 35-45 wt%, Ti: 15-20 wt%, Fe: 15-20 wt%, Ni: 15-20 wt%, Nb: 3-5 wt%, to optimize the metallurgical properties of the titanium-steel interface. The upper part of the bevel is tightly fitted with the titanium, leaving a gap at the bottom for the multi-element alloy powder. During welding, the pre-filled multi-element alloy powder forms an alloy transition layer with the titanium-steel interface. After the welding wire melts, it fills the weld joint, forming the weld area together with the pre-filled powder. This method maintains the stability of the multi-element alloy powder and prevents it from being dispersed by the gas flow. This method overcomes the shortcomings of filler materials in traditional welding, avoids the high cost of laser coaxial powder feeding, and significantly reduces powder loss and particle size limitations in arc powder feeding.

The invention provides a Q890qE and Q420qE bridge steel vertical position butt welding method which comprises the following steps: step 1, polishing and derusting a single-side V-shaped joint groove of a steel plate according to standard requirements to expose metallic luster; step 2, preheating the welded joint by adopting an electric heating mode, wherein the preheating temperature is 75 + / -5 DEG C; step 3, pasting a ceramic liner on the reverse side of the groove; 4, solid welding wire CO2 gas shielded welding, single-face welding double-face forming and multi-layer and multi-pass welding modes are adopted till the groove is filled; 5, the ceramic liner on the back face of the weld joint is removed and cleaned up; and 6, post-heat treatment is conducted on a welded joint after welding, the post-heat temperature ranges from 200 DEG C to 250 DEG C, after heat preservation is conducted for 3 hours, a power source is turned off, and the welded joint is naturally cooled to the room temperature. The method is excellent in welding quality and mechanical property, efficient in welding and suitable for popularization.

The application discloses a welding method for improving low-temperature impact toughness of thick plates in a stress relief heat treatment state, which comprises the following steps: processing a groove; symmetrically processing an X-shaped groove on a welding section of a thick steel plate to be welded, wherein the X-shaped groove comprises a central flat part and two inclined parts symmetrically arranged on both sides of the central flat part in a thickness direction; pre-welding; controlling an assembly gap of the tailor-welded thick steel plate to be zero, and adopting tungsten argon arc welding to pre-weld a welding bead on both sides of the groove root of the upper and lower surfaces of the thick steel plate; and welding; adopting submerged-arc welding to weld and fill the groove on both sides of the upper and lower surfaces of the thick steel plate containing the pre-welding bead. The welding method for improving low-temperature impact toughness of thick plates in a stress relief heat treatment state can effectively improve the low-temperature impact toughness of the weld.

The invention provides a bridge steel combined welding method. A groove is an asymmetric V-shaped double-faced groove. GMAW-Ar (argon-rich mixed gas shielded welding) and SAW (submerged arc welding automatic welding) combined welding is adopted, a solid welding wire, a submerged arc welding wire and a welding flux are selected, and welding is conducted in a multi-layer and multi-pass mode; an alloy system of chemical components of the submerged arc welding wire is Mn-Ni-Cr-Mo, rare earth elements are added in the formula, and high-purity deposited metal is obtained while grains are refined. By means of the method, welding of the ultrahigh-strength steel above the 890 MPa grade of the Q890qE bridge is achieved, the mechanical property of a welded joint is excellent, and the welding efficiency is high; the mechanical property index of a welded joint is higher than the required value RP0.2 > = 890, Rm > = 1000,-40 DEG C KV2 > = 54J, and A > = 12%; as the steel plate strength is improved, the bridge span is increased, and the number of piers is reduced; as the steel plate is thinned, the welding workload is reduced, and the preheating requirement is lowered; along with reduction of the weight of the bridge member, transportation and bridge site hoisting operation are more convenient.

Method for producing a composite arrangement (1, 1') from several electrically conductive components (2, 2') and an electrically conductive connecting component (3, 3'), wherein - the components (2, 2') are arranged one above the other as a parallel joint, so that the components (2, 2') lie on top of each other with their flat sides, - a predetermined section (2.1, 2.1') of the parallel joint is bent by pressing down and / or holding down on an inclined plane (E1, E1', E2, E2') having a predetermined angle of inclination (β) of a wedge-shaped recess (A, A') of the connecting component (3, 3'), so that the predetermined section (2.1, 2.1') of the parallel joint rests positively on the inclined plane (E1, E1', E2, E2') of the wedge-shaped recess (A, A'), and - the electrically conductive components (2, 2') arranged one above the other are integrally connected to one another and to the connecting component (3, 3') in the wedge-shaped recess (A, A') in an exposed end region of the angled section (2.1, 2.1') arranged on the inclined plane (E1, E1', E2, E2') by means of a fillet and I-seam introduced by means of laser welding (L).

A scraper (60) or cleaner tip for a belt (11) of a conveyor belt machine (10) has a holding body (62) made of a first metal or alloy material. The holding body is configured or adapted for connecting to a mounting assembly (20) of the conveyor belt machine. The scraper also has a scraper element (64) joined to the holding body. The scraper element is configured or adapted for scraping from the belt any conveyed material (12) which has adhered to the belt. The scraper element has a single tungsten carbide blade (70) joined by brazing to a backing strip (66). The backing strip is made of a second metal or alloy material which is the same or similar in its thermal properties to the first metal or alloy material of the holding body. The backing strip of the so assembled scraper element (64) is then joined to the holding body. The scraper provided hereby is such that the single tungsten carbide blade extends substantially the length of the holding body.

The application discloses a thick plate welding method with good low-temperature impact toughness in a stress relief annealing state, which comprises the following steps: processing a groove; symmetrically processing an X-shaped groove on a welding section of a thick steel plate to be welded, the X-shaped groove comprising a central flat part and two inclined parts symmetrically arranged on both sides of the central flat part in a thickness direction; and welding; controlling an assembly gap of the tailor-welded thick steel plate to be zero, and adopting five-wire submerged arc welding to perform single-pass welding on upper and lower surfaces of the thick steel plate respectively. The welding method adopts high-efficiency five-wire submerged arc welding, and through reasonable setting of angles of welding guns and polarities of power sources, reasonable matching of welding materials and process parameter windows, cooperation of an optimized groove form and the process parameter window, and the like, low-temperature impact toughness of a weld after stress relief annealing heat treatment is avoided from greatly decreasing.

This invention relates to the field of pipe welding, and particularly to a method and system for the construction of thermal pipe butt joints. The method includes the following steps: pre-setting a stepped bevel at the pipe joint to be butt joint, featuring a smooth transition between a large-angle transition section and a narrow-gap welding section, with micro-grooves on the surface; fixing the pipe joint using a pipe butt joint device; dynamically calibrating the support force using a pressure sensor and control terminal to ensure the pipe joint alignment deviation is within a standard range; and performing welding using DC positive polarity TIG welding, pulsed TIG welding, or hot-wire TIG welding. The system includes a pipe butt joint device and a welding device. This solution optimizes arc energy distribution through a double-step bevel, enhances fusion through micro-grooves, improves butt joint accuracy through dynamic calibration, controls thermal deformation, and optimizes weld quality through CNC welding. It can reduce defect rates, decrease filler metal usage, increase deposition efficiency, improve first-pass yield, shorten the cycle time, and reduce costs.

The utility model discloses a groove structure which is arranged in an interlayer container, the interlayer container comprises a container inner layer cylinder body, a fusible material interlayer, a container outer layer cylinder body and a container sealing cover, a first seal welding seam is formed between the container sealing cover and the container inner layer cylinder body, and a second seal welding seam is formed between the container sealing cover and the container outer layer cylinder body. The container sealing cover covers one end of the double-layer barrel to meet the root gap requirement for welding of the first sealing weld joint and the second sealing weld joint, and the groove structure comprises a container outer barrel U-shaped groove and a container inner barrel single-side V-shaped groove. Through the implementation of the welding groove structure, melting or deformation of fusible materials in an interlayer caused by welding arc and heat conduction in the final welding seam welding process of the interlayer container is avoided, and the final seal welding seam is of a full penetration butt joint structure and meets the welding quality requirement.