44 results about "Weld quality assurance" patented technology

The invention discloses an argon arc welding technological method for nickel base alloy tubes. The argon arc welding technological method includes the following steps of selecting welding materials; conducting blanking and machining grooves, wherein cold cutting is adopted for blanking, and the grooves are machined; clearing the grooves and surfaces around the grooves, wherein areas in the range from 50 mm to100 mm around the grooves are cleared; conducting PR detection on the grooves; conducting connector pairing, wherein a pairing gap is controlled within the range from 1 mm to 2 mm, and no staggered edges exist; conducting backing welding, wherein backing welding is conducted sectionally and symmetrically; conducting filling and cosmetic welding, wherein a multilayer and multichannel welding mode is adopted, welding interlayer temperature is controlled not to exceed 100 DEG C, and specific welding technological parameters are set; conducting postwelding inspection. The argon arc welding technological method can effectively solve the problems that during welding of centrifugal casting ZG45Ni35Cr25NbM nickel base alloy tubes, hot cracks exist, weld metal is overheated, incomplete fusion occurs and roots of welds are not fused. Satisfying welding quality of nickel base alloy tubes is achieved, and use performance of nickel base alloy tubes is guaranteed.

The invention discloses a welding positioning tool of a battery box body of an electric automobile. The tool comprises a bottom plate and a box body inner cavity limiting plate fixedly arranged on the bottom plate, wherein a plurality of connecting seat bases corresponding to connecting seats on the battery box body in position in a one-to-one mode are arranged on the bottom plate, and a lifting driving mechanism is arranged on each connecting seat base. The tool is characterized in that a box body side wall outward supporting mechanism is arranged on the bottom plate, and has the advantages that due to the fact that the box body side wall outward supporting mechanism is arranged on the bottom plate, before the connecting seats are welded, the side walls of the battery box body are supported outwards through the box body side wall outward supporting mechanism, the welding deformation of the side walls is reduced, the welding quality between the connecting seats and the side walls of the box body is improved, and the connecting strength of the battery box body is guaranteed.

The invention discloses an automobile air conditioner accessory welding machine. According to the automobile air conditioner accessory welding machine designed by the invention, when the accessory welding work is performed, accessories can be well clamped and fixed through a welding workbench, a transmission gear, a first transmission rack, a second transmission rack, a clamping and fixing plate and an elastic strip, the accessories can be subjected to clamping and fixing well, the accessories are prevented from being loosened and dislocated during welding work, and contact between the accessories is tighter and firmer, then the welding quality is improved, and normal proceeding of the welding work is guaranteed; and through an arranged adjusting, regulating and positioning structure, the flexibility of the welding work can be improved, the actual requirements of the accessory welding work are met, convenience is brought to workers, accordingly, the working efficiency is improved, and the economic benefits of welding work are improved.

The invention discloses a rotary intelligent automatic welding workstation for five large pieces of a passenger car body framework. The rotary intelligent automatic welding workstation comprises a welding workshop and a rotary type positioner, the rotary type positioner can rotate around a main shaft, a grating protection device is arranged in front of the rotary type positioner, and at least onewelding robot is arranged on each of the left side and the right side of the rotary type positioner in the welding workshop. A laser locating tracking device and an anti-collision device are arrangedon each welding robot, a wire feeder, a welding wire cylinder and a gun cleaning, wire shearing and silicone oil spraying device are arranged at one side of each welding robot, and a KBK auxiliary hoisting device is arranged in front of the welding workshop. According to the rotary intelligent automatic welding workstation, automation of the welding process of the large-size new energy passenger car body framework is achieved, manual welding is replaced, the welding quality is improved, the consistency of the welding quality of the passenger car body framework is guaranteed, the welding efficiency of the passenger car body framework is improved, and the working environment of workers is improved.

The invention belongs to the technical field of shield cutterhead edge repairing, and discloses a shield cutterhead edge rapid repairing construction method based on a high-abrasion stratum. The method comprises the steps of shutdown mileage setting; a working surface construction procedure; and a cutterhead edge repair procedure. According to the shield cutterhead edge rapid repairing construction method based on the high-abrasion stratum, a vertical shaft working face construction scheme of manual hole digging pile construction, small-radius steel casing split welding and well descending andsleeve valve pipe grouting reinforcement is adopted, and the construction safety and space requirements of the high-abrasion stratum are met; a multi-dimensional repairing type selection scheme is formulated according to the cutterhead abrasion conditions at different positions, on-site feeding is carried out, a multi-layer and multi-pass welding method is combined, a gas shielded welding processthe same as or similar to a gas shielded welding process in an original factory manufacturing process is selected, the welding quality is strictly controlled, and the repairing effect is guaranteed;and a working well is excavated in advance to be synchronous with shield tunneling, the next step of work can be linked after the shutdown mileage is reached, and the problem that the repairing construction period of the high-abrasion stratum is delayed due to measures of shutdown reinforcement, in-tunnel repairing auxiliary cavern expanding excavation, operation platform building and the like issolved.

The invention belongs to the technical field of robots, and particularly relates to a demonstrator system and a demonstrating method of an arc welding robot. The demonstrator system comprises a robot, a welding machine, a demonstrator and a controller; a welding gun is arranged at the tail end of the robot, and the robot is used for contact welding with a workpiece; the welding machine is used for controlling parameters related to arc starting, arc extinguishing and welding; the demonstrator is used for demonstrating a welding seam, and regulating the welding seam; the controller is used for storing a welding seam track, recording set parameters and controlling the robot to operate; the robot is a serial six-axis robot, comprises six rotating shafts and can operate in a single-axis mode or in a linkage mode; the welding gun is installed on the outer wall of the robot; and tool calibration for the welding gun needs to be carried out on the tail end of the installed welding gun. According to the invention, the welding seam is easy to modify, an operator can select an instruction of a line where a point position which needs to be modified is located in a manual mode to move the robot to the corresponding position and click the 'position record'; the welding quality is stabilized and improved; and the uniformity of a welded product is guaranteed.

The invention discloses an auxiliary mechanism for installing lugs during automobile assembly, including a supporting base, two positioning columns, two horizontal indicating plates and two positioning mechanisms, wherein the two positioning columns are respectively fixed on the left and right sides of the upper end surface of the supporting base. end, and the rear end face of the positioning column is flush with the rear end face of the support base. The positioning mechanism includes a limit rod and a positioning mounting plate arranged horizontally. One end of the positioning mounting plate is provided with a positioning perforation that runs through its upper and lower end surfaces. The limit rod passes through the positioning perforation. Adjustment hole. The upper ends of the two positioning columns are all fixed with a vertical positioning screw rod, and the two positioning screw rods pass through the threaded adjustment holes of the two positioning mechanisms in one-to-one correspondence. The horizontal indicating board is arranged horizontally, and the two horizontal indicating boards are respectively connected with two positioning columns. When the invention is applied, it is convenient to carry out and position the lugs to be welded, thereby facilitating subsequent welding and ensuring welding quality.

The invention discloses research and development of a construction process for controlling composite board welding cracks, and relates to the technical field of composite board welding crack construction processes. The research and development of the construction process comprises the steps of welding raw material inspection, welding process evaluation selection, welding process card writing, welding personnel, welding material and machine tool inspection, stainless steel composite board blanking, welding, ray inspection, construction condition and finished product protection. According to thewelding process evaluation selection, the material and specification of stainless steel composite boards on site are counted, and proper welding process evaluation is selected; and according to welding process card writing, a welding process card suitable for on-site construction is wrote according to the welding process evaluation. The research and development of the construction process for controlling the composite board welding cracks has the advantages that the cracks can be effectively prevented, the welding quality is improved, safe and reliable operation of equipment is guaranteed, the service life of the equipment is prolonged, and reference is provided for companies to better control welding defects in similar engineering construction in the future, and the problem that the cracks are generated in composite board welding is solved.

The invention discloses an expanded tube welding production method of a simple evaporator, which comprises the steps of bending a U-shaped tube, punching, shearing and mounting fins, mounting each component of the evaporator, expanding the tube, welding and the like. The method is simple and rigorous to operate, through a simple and clear self-inspection program, the quality of materials in each step is guaranteed, the yield is increased, and the production cost is reduced; In the welding process, the welding quality is ensured by controlling the temperature and selecting welding rods, and the sealing performance of products is ensured.

The invention relates to the technical field of heavy truck machining, in particular to a heavy truck cab welding device. Mechanical arms, welding arms, fixing frames and a base are included. A material conveying line rail is arranged at the middle position above the base and provided with a transmission base. Stand columns are symmetrically arranged on the left side and the right side of the transmission base. Transmission boxes are arranged at the positions above the two stand columns. The mechanical arms are provided with the welding arms, and welding heads are arranged at the ends, close to a supporting plate, of the welding arms. The welding heads are rotationally connected with the welding arms through rotation shafts and provided with the fixing frames, trapezoid blocks are symmetrically arranged at the two side positions in the fixing frames and are in sliding connection with the fixing frames, and guide wheels are arranged on the inner sides of the trapezoid blocks. In the heavy truck cab welding device, through the arrangement of the welding arms, the fixing frames and cameras, the welding quality of the device is improved, device welding stability is guaranteed, and thedevice machining range is enlarged.

The invention discloses a DTRO (Disk Tubular Reverse Osmosis) diaphragm welding heating mechanism and a DTRO diaphragm welding machine, the welding heating mechanism is mounted on a machine table and comprises a lower die assembly and a lower support plate, the lower support plate can move up and down under the action of a lower die driving part, and the lower support plate is used for bearing a diaphragm to be welded; the upper die assembly comprises a heat conduction upper plate which can move up and down under the action of an upper die driving part so as to be pressed against the diaphragm, and a heat conduction through groove penetrating through the upper end face and the lower end face of the heat conduction upper plate is formed in the heat conduction upper plate; the heating assembly comprises a heating plate capable of moving up and down under the action of a lifting driving assembly, and a shaping heating plate capable of moving in the heat conduction groove and heating the heat conduction groove is arranged at the lower end of the heating plate; the lower end of the shaping heating plate can extend out of the lower end of the heat conduction upper plate along the heat conduction through groove. According to the diaphragm welding device, the diaphragm is reinforced and shaped through mechanical cooperation, the welding quality of the diaphragm is improved, and the finished product quality of the diaphragm is guaranteed.

The invention discloses a packaging structure and a forming method of the packaging structure. According to the invention, the packaging structure comprises a heat dissipation structure, wherein the first heat dissipation part of the heat dissipation structure can separate a solder layer from a passive element, so that the risk of short circuit caused by the fact that metal solder splashes to thepassive element during solder layer welding is avoided; the first heat dissipation part is located in the area close to the center of the substrate, so that the influence of warping of the substrate on the welding layer can be reduced so as to avoid the breakage of the solder layer structure; the multiple first heat dissipation parts are arranged at intervals, and when reflux soldering is conducted on the solder layer, volatilized soldering flux can be discharged from gaps between the first heat dissipation parts, so that the soldering quality of the solder layer is guaranteed, and the strength of the solder layer is guaranteed; and according to the packaging structure and the forming method of the packaging structure, the reliability of the product can be improved, and the yield of the product is improved.

The invention relates to a laser machining method and a welding tool for a capacitive transducer. The laser machining method comprises the following steps of machining and forming a cylinder body, an ultrathin metal plate and a lap joint circular ring, and machining and forming an annular mounting groove in one end of the cylinder body; sequentially assembling the ultrathin metal plate and the lap joint circular ring through a welding tool and pressing the ultrathin metal plate and the lap joint circular ring in the mounting groove in one end of the cylinder body, wherein the diameter of the ultrathin metal plate is equal to that of the mounting groove, and welding interfaces are arranged between the peripheral wall of the lap joint circular ring and the cylinder body; introducing protective gas into the cylinder body; and using a laser welding device for sequentially completing welding of the welding interfaces. According to the method, laser sealing welding of the ultrathin metal plate can be realized, the welding quality can be improved, the air tightness of the capacitive transducer is ensured, and meanwhile, the product percent of pass is improved.

The invention relates to a welding method for an ITO target material and a Mo back plate. The welding method comprises the following steps that (1) the ITO target material and the Mo back plate are heated to target temperatures respectively; (2) keeping the temperature of the ITO target material and the Mo back plate unchanged, and infiltrating the welding surface of the ITO target material and the welding surface of the Mo back plate; (3) forming a welding flux groove in the welding surface of the Mo back plate, adding molten welding flux into the welding flux groove, and attaching the ITO target material to the welding flux groove; and (4) a buffer layer is arranged on the surface of the ITO target material, natural cooling is conducted in the pressure applying process, and welding of the ITO target material and the Mo back plate is completed. According to the welding method, the ITO target material and the Mo back plate are not prone to deformation in the welding process, the welding binding rate is high, the welding quality of the ITO target material and the back plate is improved, and the magnetron sputtering quality is guaranteed.

The invention belongs to the technical field of steel pipe welding equipment, and particularly relates to large-diameter thick-wall steel pipe welding equipment. In order to overcome the defect that an existing large-diameter thick-wall spiral welded pipe is formed through one-time welding and is difficult to repair, the following technical scheme is adopted, the large-diameter thick-wall steel pipe welding equipment comprises a positioning pre-welding device, a diameter measuring device and a precise welding device, wherein the positioning pre-welding device is used for pre-welding the steel pipe; the diameter measuring device is used for measuring the diameter and the ovality of the steel pipe; the precise welding device is used for carrying out performance welding on the steel pipe; and the precise welding device is located behind the positioning pre-welding device in the advancing direction of the steel pipe. According to the large-diameter thick-wall steel pipe welding equipment, a secondary welding mode is adopted, diameter measurement is carried out after positioning and pre-welding, and repairing is conveniently carried out when the steel pipe is unqualified; and positioning pre-welding has a preheating effect, the steel pipe temperature rise speed and temperature rise amount are reduced, the welding quality is improved, and the steel pipe performance is guaranteed.

The invention discloses a device for auxiliary installation of support lugs when assembling automobiles, comprising a support base, two positioning columns, two reinforcing rib plates, two horizontal indicating plates, two positioning mechanisms and a locking mechanism, Two positioning columns are respectively fixed on both ends of the upper end surface of the support base, and a positioning mechanism is fixed on the upper end of each positioning column. The positioning mechanism includes a positioning mounting plate connected to the upper end of the positioning column and a limit rod passing through the positioning mounting plate. . The two horizontal indicating plates are respectively connected with the two positioning columns, the two reinforcing rib plates are respectively connected with the front end surfaces of the two positioning columns, and the two reinforcing rib plates are both connected to the upper end surface of the support base. A threaded adjustment hole is arranged on a reinforcing rib plate, the locking mechanism includes a positioning screw rod and a limit block connected to the end of the positioning screw rod, and the positioning screw rod passes through the screw thread adjustment hole. When the present invention is applied, it is convenient to lock and position the lugs to be welded, thereby facilitating subsequent welding and ensuring the welding quality.

The invention discloses a shield segment reinforcing mesh manufacturing tool, belongs to the technical field of engineering machinery, and particularly relates to a shield segment reinforcing mesh machining device. The key technology is that the operation platform comprises an upper-layer platform, a lower-layer platform, stand columns and the limiting columns, the top ends of the stand columns penetrate through the lower-layer platform and are fixed to the lower surface of the upper-layer platform, and the bottom ends of the limiting columns penetrate through the upper-layer platform and are fixed to the upper surface of the lower-layer platform; limiting sleeves are fixed to the joints of the lower-layer platform and the stand columns, limiting rings are fixed to the upper portions of the stand columns, and the lower-layer platform is connected with an air cylinder. The device has the beneficial effects that the limiting columns on the operation platform are telescopic, when a reinforcing mesh is manufactured, the air cylinder is started, the lower-layer platform drives the limiting columns to move downwards, the reinforcing mesh can be conveniently and rapidly taken out at the moment, operation is easy and convenient, and therefore the manufacturing efficiency of the reinforcing mesh is improved, the welding quality of the reinforcing mesh is guaranteed, and the manufacturing precision of the mesh is guaranteed.