249 results about "Plasma arc welding" patented technology

The invention discloses a plasma arc welding device for producing a shell of a portable gas stove, and relates to the technical field of welding tools for the shell of the portable gas stove, the plasma arc welding device comprises a rack, a protection box mounted at the top of the rack and an image monitor mounted on the inner top surface of the protection box, and a rotary three-turn chuck is mounted on one side of the case; a first linear motor is mounted on the other side of the top of the rack, and a butt joint mechanism is mounted on the mounting seat; a feeding and discharging mechanism is mounted at the outer end of the herringbone rotating seat; a plasma arc welding mechanical arm is mounted on a moving seat of the second linear motor; the full-process automation of the to-be-welded assembly from feeding, grabbing to transferring is achieved; through cooperative clamping of the arc-shaped hoop plate and the arc-shaped clamping plate and cooperation with an anti-deviation structure of the anti-rotation arc strip and the anti-sliding groove, the stability of a to-be-welded part in the transferring process is ensured, and the positioning deviation risk caused by manual operation is greatly reduced; and through linkage adjustment of the electric push cylinder and the lifting assembly, the grabbing height and the transferring position of the shell of the portable gas stove of different specifications can be accurately adapted.

The invention relates to the technical field of circular tube welding, in particular to a circular tube plasma arc welding device which comprises a bottom plate and further comprises a positioning mechanism, a welding mechanism, a polishing mechanism and an extraction mechanism, the positioning mechanism comprises two fixing frames and two electric clamping jaws, and the welding mechanism comprises a welding gun, a rotating ring, a rotating assembly and a moving assembly. The grinding mechanism comprises an L-shaped plate, a Z-shaped plate, a grinding block, a lifting assembly, a telescopic assembly and a transmission assembly, the extraction mechanism comprises an air draft fan blade, a storage assembly and a plurality of suction nozzles, the welding gun, a rotating ring, a rotating assembly and a moving assembly are arranged, the height of the welding gun can be adjusted through the moving assembly, the welding gun can be close to a round pipe needing to be welded, and the welding efficiency is improved. And meanwhile, the rotating assembly can drive the welding gun to rotate around the outer walls of the circular pipes, and plasma arc welding of the ends of the two circular pipes is achieved.

The invention relates to the technical field of plasma arc welding, in particular to a plasma arc welding machine for fan steel plate machining. Comprising a machining table, an electric sliding table used for transversely adjusting the welding position is fixedly connected to the machining table, and the output end of the electric sliding table is in transmission connection with a plasma generating mechanism used for welding the fan steel plate; the distance between the mounting block and the second annular block is monitored through a distance measuring infrared receiver and a distance measuring infrared transmitter, data are fed back to a controller, and the controller controls a third motor to adjust the distance between the mounting block and the second annular block. Therefore, the distance between the welding end of the plasma arc welding gun and the surface of the fan steel plate reaches a preset value, and through self-adaptive adjustment of the distance between the welding end of the plasma arc welding gun and the surface of the fan steel plate, the plasma arc welding gun can achieve the optimal welding effect when the fan steel plates with different thickness values are welded.

The in-situ measurement method for the depth and the width of the thick plate aluminum alloy perforation welding small hole molten pool is characterized by comprising the following steps: 1, image processing: preprocessing an obtained image, removing random splashing influence through combination of CLAHE and Gamma correction, improving the image quality, enhancing the edge characteristics of the molten pool and improving the welding quality detection accuracy; 2, deep learning: improving the accuracy and stability of small hole molten pool edge identification by improving the direction perception position code of SegFormer and introducing a time sequence information fusion mechanism; the method has the beneficial effects that in-situ real-time measurement of the depth and the width of the small-hole molten pool is realized through an image processing and deep learning fusion method according to the real-time detection requirement of key geometric feature changes of the small-hole molten pool in the variable polarity plasma arc welding perforation process of the thick plate aluminum alloy.

The invention relates to the field of prefabricated steel welding, in particular to a prefabricated steel structural part welding device which comprises a C-shaped supporting frame and a first hydraulic rod detachably installed on the outer side surface of the C-shaped supporting frame, a limiting sleeve is fixedly connected to the output end of the first hydraulic rod, and a protective gas hood is arranged on the inner side wall face of the limiting sleeve. A hydraulic pump is arranged in the protective gas hood, and a butt joint is fixedly connected to the output end of the hydraulic pump. When the plasma arc welding connector is replaced with a new plasma arc welding connector, the rhombic protruding strips on the outer side surface of the top end of the plasma arc welding connector are used for pushing and extruding the bottom surface of the clamping block towards the two sides, the butt joint groove in the top end of the plasma arc welding connector is connected to the outer side surface of the butt joint in a sleeving mode, and due to the fact that the butt joint groove and the rhombic protruding strips are tightly attached, the butt joint is not prone to deformation. Therefore, the plasma arc welding joint does not incline at excessive angles, and when the plasma arc welding joint slightly inclines, the friction force between the butt joint groove and the butt joint can be increased.

The invention discloses a method suitable for improving the structure uniformity of an AZ-series magnesium alloy manufactured through an electric arc additive. The method comprises the steps that firstly, a hot-rolled AZ31 plate is selected as a base plate; 2, performing three-dimensional modeling and slicing treatment according to a target magnesium alloy workpiece, and designing a deposition path; 3, preheating the substrate, adjusting the distance between the electrode and the substrate, and introducing protective gas; and fourthly, according to the deposition path, electric arc additive manufacturing is conducted in an inner layer rotating deposition mode, and the AZ series magnesium alloy workpiece is obtained. Plasma arc welding is used as a heat source, the preparation speed is high, heat input control is accurate, the arc stiffness is good, splashing is effectively reduced, and the workpiece formability is good; a rotary deposition mode is adopted, thermal circulation is effectively controlled, abnormal structure growth is avoided, meanwhile, the means of interlayer hammering deformation is assisted, a deposition interface is optimized, the obtained AZ series magnesium alloy workpiece is uniform in structure, fine in grain, few in defect and excellent in strength and plasticity, and the process is simple and easy to popularize.

The invention belongs to the technical field of metal welding equipment manufacturing, and particularly relates to a multifunctional welding table for metal products. The two supporting plates are symmetrically connected to the two ends of the workbench in a sliding mode through the sliding openings, and adjusting assemblies are arranged at the bottom ends of the supporting plates. The two groups of mounting mechanisms are respectively mounted on the supporting plate; when the metal product is manufactured, metal cutting and welding equipment such as an automatic and semi-automatic electric arc welding bar and a plasma arc welding bar is usually adopted for manufacturing, through the arrangement of the mounting mechanism, under the cooperation of a rack, a tooth column and an inner tooth ring, the rack drives a clamping column to contract when the rack contracts, the tubular metal product is clamped through the clamping column, and then the tubular metal product is clamped through the clamping column. The function of fixing the tubular metal product is realized; the rotating block drives the second lead screw to rotate, the lead screw drives the clamping plate on the upper portion to move downwards till the metal product is clamped, and therefore the function of fixing the sheet-shaped or plate-shaped metal product is achieved.

The application relates to the technical field of plasma arc welding, in particular to a plasma arc welding machine which comprises a machine table, an arrangement structure is arranged on the inner side of the machine table, a positioning structure is arranged on the top side of the arrangement structure, a lifting structure is arranged on the bottom side of the arrangement structure, a welding structure is arranged in the middle of the machine table, an adjusting structure is arranged on the inner side of the welding structure, and a bearing structure is arranged on the arrangement structure. The two parts to be welded can be synchronously rotated through the arrangement structure, good welding effect is obtained, the workpiece with a cylindrical structure can be stably and accurately fixed through the positioning structure, the height can be adjusted according to the specifications of the welding workpiece through the lifting structure, the welding work of the cylindrical workpiece can be quickly completed through the welding structure, the welding angle of the plasma welding gun can be adjusted through the adjusting structure, and the tubular or other special-shaped workpiece can be provided with good fixing effect through the bearing structure.

The invention provides a semi-automatic plasma arc welding workbench, and relates to the technical field of welding workbenches, the semi-automatic plasma arc welding workbench comprises a T-shaped groove workbench, a fixed matching sliding block is slidably mounted in a T-shaped groove of the T-shaped groove workbench, a notch is formed in the front side of the top end face of the fixed matching sliding block, and a columnar limiting groove is formed in the front side of the bottom face of the inner end of the notch; the axis part of the bottom surface of the inner end of the columnar limiting groove is provided with an insertion hole position penetrating through the bottom end surface of the fixed matching sliding block, and a film type pressure sensor is installed around the inner circumferential surface of the insertion hole position and adjacent to the bottom opening end part. According to the auxiliary monitoring structure based on the inserting column, the rubber round block and the film type pressure sensor, if the workpiece is collided by foreign objects in the clamping state and causes small displacement of the workpiece, early warning can be triggered synchronously, warning of the small displacement condition of the workpiece is achieved, and the working efficiency is improved. The technical problem that a plasma arc welding T-shaped groove workbench widely used in the current industrial manufacturing field cannot monitor the workpiece clamping state is solved.

The invention discloses a curtain wall aluminum plate local hot melting welding device, and belongs to the technical field of curtain wall welding, the curtain wall aluminum plate local hot melting welding device comprises a climbing mechanism used for climbing along a keel and crossing an embedded plate, and the climbing mechanism is provided with a carrying mechanism used for driving a curtain wall aluminum plate to move to a designated installation position and a welding mechanism used for welding the curtain wall aluminum plate on the keel; through the climbing mechanism and the crossing module, the device can actively clamp and climb along a vertical keel through the wheel pasting module like a wall climbing robot, and when obstacles such as embedded plates are encountered, the device can alternately retract and lift the crossing module step by step, and lossless crossing is achieved; by means of multi-degree-of-freedom coordinated movement, a curtain wall aluminum plate can be extremely accurately conveyed to a designated installation position in a three-dimensional space, meanwhile, a photoelectric detection module on the welding mechanism can automatically scan and accurately position a seam, and accurate welding of local hot melting welding is achieved in cooperation with a plasma welding gun and an angle-adjustable wire feeding pipe.

The invention discloses a color-coated sheet plasma arc welding device and a welding method thereof, and relates to the related technical field of welding, the color-coated sheet plasma arc welding device comprises a rack and supports fixed to the two sides of the rack, and further comprises sliding barrels fixed to the two sides of the rack through the supports, transmission rods are vertically installed in the two sliding barrels in a sliding mode, and the transmission rods are fixed to the two sides of the rack through the supports. Sliding rods are fixed to the tops and the bottoms of the two transmission rods correspondingly, a rectangular frame is formed through the two sliding rods and the two transmission rods, the two transmission rods are installed on the two sliding rods through translation assemblies, the two lifting plates are fixed to the opposite sides of the two sliding barrels correspondingly, and the two lifting plates are driven by driving sliding sleeves and lead screws to rotate synchronously. According to the embodiment, the plasma arc welding gun ascends and descends along with the protruding form of the color-coated plate body while the sliding rod is driven to horizontally move, and compared with a driving mode of multiple air cylinders or a motor air cylinder combination, the plasma arc welding gun driving device has the advantages of being simple in structure, low in production cost and debugging cost and stable in accuracy.

The invention discloses plasma arc welding equipment for automobile part machining, and relates to the related technical field of automobile part machining, the plasma arc welding equipment comprises a workbench, and the workbench is provided with a mechanical arm used for controlling a welding gun to move and a clamping mechanism used for clamping a composition pipeline of an automobile exhaust pipe; the number of the clamping mechanisms arranged on the workbench is two, the two clamping mechanisms clamp the two welded pipelines respectively, and a driving mechanism is further arranged on the workbench. When two sections of pipelines are welded, the two clamping mechanisms are driven by the driving mechanism to have the following strokes: a first stroke, the two clamping mechanisms respectively clamp and fix the two sections of pipelines; in the second stroke, the two clamping mechanisms get close to each other to drive the two ends, needing to be welded, of the two sections of pipelines to be in butt joint; and in the third stroke, the two sections of pipelines are driven to circumferentially rotate so as to assist the welding gun in welding operation.

The plasma arc welding machine comprises a bottom plate, linear motors are fixedly mounted on the two sides of the middle of the top end of the bottom plate correspondingly, the driving ends of the linear motors are fixedly connected with movable plates correspondingly, and the centers of the top ends of the movable plates are fixedly connected with one ends of hydraulic cylinders correspondingly; the other end of each hydraulic cylinder is fixedly connected with the middle of a connecting rod, the two ends of each connecting rod are fixedly connected with clamping assemblies respectively, the clamping assemblies are symmetrically arranged on the two sides of a placing plate respectively, and the placing plate is arranged at the top of the bottom plate; gantry sliding tables are fixedly installed at the two ends of the top of the bottom plate, angle adjusting mechanisms are fixedly connected to the driving ends of the gantry sliding tables, and plasma welding guns are fixedly connected to the bottom ends of the angle adjusting mechanisms. The placing plate is used for placing the semitrailer frame girder, the frame girder is positioned, clamped and fixed through the clamping assembly, the stability in the welding process is ensured, and the welding defect caused by workpiece movement is effectively avoided; and the clamping assembly is ingenious in design.

The invention discloses a passenger car front passenger door lower cross beam welding positioning tool which comprises a lower cross beam welding table, and a supporting frame and a sliding base capable of moving along a sliding groove are arranged on the lower cross beam welding table. The plasma welding assembly comprises a plasma welding controller, a plasma arc welding connector, an electric telescopic rod and a mechanical hand, wherein the plasma welding controller is installed on the sliding base, and the electric telescopic rod drives the welding connector to move. The profiling positioning device consists of a profiling reference block and a transmission double-screw rod; the embedded water cooling device comprises a spiral water cooling channel embedded in the profiling reference block; through the synergistic effect of the snakelike groove of the profiling reference block and the transmission double screws, the profile of the special-shaped curved surface of the lower cross beam of the passenger car is accurately matched, and the problem that a workpiece is suspended or stressed unevenly is solved; the dynamic pressure adjusting mechanism detects and adjusts the contact pressure of the pressing ball in real time, it is guaranteed that clamping force is evenly distributed, the defects of misalignment, undercut and the like of weld joints are avoided, and the welding qualification rate is increased.

The invention provides a steel pipe welding device for house building, which relates to the field of welding equipment and comprises a welding machine main body, a clamping carriage, a plasma arc welding gun, a welding monitoring part, a welding auxiliary mechanism and a monitoring execution mechanism, the clamping sliding frames are connected to the upper portion of the welding machine body in a sliding mode. The welding bearing frame is arranged in the middle of the upper portion of the welding machine body. The welding mounting frame is fixedly connected to the rear portion of the welding bearing frame. The plasma arc welding gun is arranged on the inner side of the welding mounting frame; the welding monitoring pieces are fixedly connected to the outer sides of the clamping sliding frames correspondingly. The welding alarm part is fixedly connected to the upper portion of the welding machine body. The welding auxiliary mechanism is arranged above the welding machine main body; the monitoring executing mechanism is arranged at the front end of the upper portion of the welding machine body, the quality and stability of a welding seam are effectively improved, and the problem that the welding quality of a steel pipe is affected due to the fact that periodic impact loads generated during operation of a large machine are conducted to a welding device through the ground is solved.

The invention relates to the technical field of cold-roll steel sheet welding, in particular to plasma arc automatic welding equipment for cold-roll steel sheet machining, which comprises a rack, a moving unit connected to the rack and the like, a plurality of first electric push rods are fixedly connected to the bearing plate; the telescopic ends of the first electric push rods are jointly and fixedly connected with a first mounting plate. A base plate is connected to the first mounting plate and located under the plasma arc welding gun, an arc-shaped groove is formed in the base plate, and the base plate is located in a through groove in the middle of the bearing plate. A plurality of second electric push rods are fixedly connected to the front side and the rear side of the rack correspondingly; the telescopic ends of the second electric push rods located on the same side are jointly and fixedly connected with a second mounting plate, and the two second mounting plates are symmetrically arranged front and back. Through the synergistic effect of all the parts, automatic alignment and welding of the joints of the cold-roll steel sheet cylinder are achieved.

The invention relates to the technical field of plasma arc welding, and particularly discloses a building steel structure node plasma arc welding machine which comprises a base, a welding head is arranged on at least one side of the base, and the welding head is aligned to a to-be-welded point of a cross beam and a to-be-welded point of a vertical beam; the welding head is in sliding connection with the base through the sliding rail assembly, and when the base and the cross beam are relatively fixed, the welding head slides relative to the cross beam through the sliding rail assembly, so that the welding head covers the welding path of the cross beam and the vertical beam; the base is arranged on the outer wall of the cross beam from the upper portion of the cross beam in a sleeving mode during installation, and locking blocks are arranged at the two ends of the base and can be inserted into grooves in the two ends of the cross beam. By arranging the sliding rail assembly and the movable welding head, all-directional covering welding of a complex steel structure joint is achieved, the welding head can slide bidirectionally along the cross beam, continuous welding can be completed without frequently adjusting the position of the base, the welding efficiency is remarkably improved, and the welding cost is reduced. The method is particularly suitable for batch welding operation of cross joints of cross beams and vertical beams in building steel structures.

The invention belongs to the field of welding devices, and particularly relates to a steel formwork longitudinal and transverse rib welding device which comprises a welding table, and a formwork body is arranged at the top of the welding table; a plurality of transverse ribs and longitudinal ribs are arranged in the template body; a welding assembly is arranged at the top of the welding table; the welding assembly comprises a mechanical arm and a plasma arc welding machine for welding the template body; through the cooperation effect of a steel cable and an inserting block, after a clamping plate extrudes a formwork body, the steel cable can release the fixing state of the inserting block to a connecting rod, so that follow-up adjustment of the connecting rod to an equal-distance adjusting assembly is started, the device has continuity when used, equipment needed during welding is reduced, meanwhile, through the arrangement of the equal-distance adjusting assembly, the welding efficiency is improved, and the welding quality is improved. The positioning and guiding functions can be achieved during installation of the transverse ribs and the longitudinal ribs, the accuracy of the positions of the transverse ribs and the longitudinal ribs during welding of the formwork body is improved, and the workload needed by multiple times of measurement during installation of the transverse ribs and the longitudinal ribs is reduced.

The invention relates to the technical field of plasma arc welding, and discloses a plasma welding tool for automobile part production, which comprises a rack, and a welding assembly is arranged at the top end of the rack. According to the plasma welding tool for automobile part production, by arranging the welding assembly, when a first hydraulic cylinder is started, a plasma welding head is made to be close to a weld joint on a circular workpiece body at the center of a circular ring plate, and an asynchronous motor, a driving gear, a fixing frame, the circular ring plate and a driven gear ring are matched to synchronously and stably rotate in multiple sets of limiting wheels; when the support is kept horizontal and is located outside the top end of the annular plate, a first asynchronous motor is started to enable a one-way threaded rod to rotate, and then the support is driven to rotate synchronously, and after the plasma welding head is started, the plasma welding head is matched with revolution of the plasma welding head to better weld a circular weld joint; and the movable column drives the plasma welding head to transversely move to weld a horizontal welding seam on the square workpiece body, so that the adaptability and the efficiency of the tool body can be improved.

The invention relates to the technical field of pipeline welding, in particular to a stainless steel square pipe plasma arc welding device which comprises a base and further comprises a supporting mechanism, a welding mechanism and a clamping mechanism. The stainless steel square tube plasma arc welding device comprises a base, a welding mechanism and a clamping mechanism, the welding mechanism comprises a double-shaft air cylinder, a welding gun and an angle adjusting assembly, a base table is fixedly arranged at the top of the base, and the clamping mechanism is arranged at the top of the base table and comprises a sliding assembly, a lifting assembly, a rotating assembly, a centering assembly and two clamping plates. And by supporting the interiors of the two square pipes and clamping and limiting the exteriors of the two square pipes, the problem of welding deformation under the action of contraction force and thermal stress of a welding seam can be prevented, and then the plasma arc welding quality is improved.

The invention belongs to the technical field of ship accessory machining, particularly relates to a plasma arc welding machine and method for ship accessory machining, and provides the following scheme for solving the problem that an existing plasma arc welding machine is poor in temperature stress treatment effect: the plasma arc welding machine for ship accessory machining comprises a bearing platform; the two mounting plates are arranged on the bearing platform, two symmetrical movable grooves are formed in the bearing platform, and the inner walls of the movable grooves are slidably connected with the outer portions of the mounting plates on the same sides; the four clamps are arranged between the two mounting plates, and the two clamps on the same side are symmetrical to each other; a first hydraulic rod is arranged on the upper side of the welding gun. According to the plasma arc welding machine and method for machining the ship accessories, heat of cooling liquid generated during welding of the welding gun can be recycled, the welded ship accessories are preheated, and therefore temperature stress generated during welding of the accessories is reduced, stress cracks generated after firmware welding are avoided, and the welding quality is improved.

An intelligent plasma arc welding machine for producing automobile shock absorbers and its usage method. It relates to the technical field of welding equipment. It includes a machine table and a welding torch arranged on the machine table. A first clamping mechanism is arranged on one side of the top of the machine table, and a second clamping mechanism is arranged on the other side of the top of the machine table. A support mechanism is arranged between the first clamping mechanism and the second clamping mechanism; the first clamping mechanism includes a rotating seat, a chuck and a motor, and the motor is used to drive the chuck to rotate; the second clamping mechanism includes a sleeve, a movable rod and a number of movable blocks. The sleeve is fixedly arranged, and a number of the movable blocks are arranged around the outer side of the front end of the movable rod, and a number of the movable blocks can move back and forth along the axial direction of the movable rod. Through the supporting actions of the first clamping mechanism, the second clamping mechanism and the support mechanism, the clamping effect on the first component and the second component is improved, and the welding precision is significantly improved in this application.

A nozzle for a liquid-cooled plasma arc torch is provided. The nozzle includes an inner nozzle body defining a proximal end and a distal end extending along a central longitudinal axis of the nozzle. The inner nozzle body comprises a plasma bore disposed along the central longitudinal axis. An outer nozzle body is disposed about the inner nozzle body. The outer nozzle body and the inner nozzle body are joined at a distal interface to form a circumferential fluid seal. A liquid coolant channel defined between the inner nozzle body and the outer nozzle body. The liquid coolant channel is disposed substantially circumferentially into the inner nozzle body. A distal tip portion of the liquid coolant channel is located in the inner nozzle body between the distal interface and the plasma bore along a radial axis that is substantially perpendicular to the central longitudinal axis.

The invention discloses plasma arc welding equipment for frame straight seam welding, and relates to the technical field of plasma arc straight seam welding equipment.The plasma arc welding equipment comprises a rack installed on the upper surface of a machine base through bolts, and the side face, located below the rack, of the machine base is connected with a working rack for bearing a frame through bolts. According to the plasma arc welding equipment for frame straight seam welding, the end portions of the two frame workpieces are precisely bulldozed and aligned through the aligning mechanism, the initial assembly error is eliminated, rigid clamping is formed on the two sides of the frame workpieces through the clamping mechanism, the welding faces of the frame workpieces are forced to be tightly attached, and the welding efficiency is improved. The aligning mechanism, the clamping mechanism and the original pressing assembly form three-dimensional multi-point constraint on the frame workpiece, workpiece upwarp, transverse shrinkage and distortion caused by welding thermal stress are effectively resisted, finally, the clamping mechanism is in linkage with the top disc to operate, adsorption of the frame workpiece and the working table top is broken, quick and lossless workpiece taking is facilitated, and the welding quality is improved. And deformation of the frame workpiece is avoided.

The invention discloses a steel cable armor semi-automatic plasma arc welding machine, and particularly relates to the technical field of steel cable production, the steel cable armor semi-automatic plasma arc welding machine comprises a bottom plate, a length fixing mechanism, a press-fit cutting mechanism and a conveying and coating mechanism, the length fixing mechanism, the press-fit cutting mechanism and the conveying and coating mechanism are all fixedly connected with the bottom plate, and the press-fit cutting mechanism comprises four sets of second supporting legs. The second supporting legs are fixedly connected with the bottom plate, the upper ends of the four second supporting legs are fixedly connected with a top plate, the lower end of the top plate is fixedly connected with two third springs, the lower ends of the two third springs are fixedly connected with a lifting plate, and the lower end of the lifting plate is fixedly connected with a cutter. The upper end of the lifting plate is fixedly connected with a limiting sliding groove. By means of the device, automatic wrapping, fixed-length cutting, outer armor welding and positioning of an outer armor can be achieved at the same time.

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 application discloses a valve piece positioning type plasma arc welding equipment and relates to the technical field of plasma arc welding machines.The valve piece positioning type plasma arc welding equipment comprises a machining table, an arc welding gun body, a vertical rod fixedly connected to the top of the machining table, an elevating rail fixedly connected to the end of the vertical rod, an elevating sliding block slidingly connected to the inside of the elevating rail, and a fixed machine ring fixedly connected to one side of the elevating sliding block.The valve piece positioning type plasma arc welding equipment has the advantages that in the process of inside supporting positioning, a sealing pressure seat extrudes a sealing air bag, so that the sealing air bag is in close contact with the open end of a valve piece, the sealing air bag cooperates with the sealing pressure seat and a telescopic sleeve column to realize the sealing of the open end of the valve piece, back protection gas is introduced into the valve piece through the penetrating air holes, and thus, in the case of rapidly realizing the positioning of the valve piece, the sealing treatment is realized, so that the back of the welding point of the valve piece cannot be oxidized and the molten pool is stable.

The application discloses a method suitable for improving the structure uniformity of an arc additive manufacturing AZ series magnesium alloy, and the method comprises the following steps: 1, selecting a hot-rolled AZ31 plate as a substrate; 2, performing three-dimensional modeling and slicing processing according to a target magnesium alloy workpiece, and designing a deposition path; 3, preheating the substrate, adjusting the distance between an electrode and the substrate and inputting a protective gas; and 4, performing arc additive manufacturing in an inner layer rotary deposition mode according to the deposition path to obtain the AZ series magnesium alloy workpiece. The application takes plasma arc welding as a heat source, has the advantages of fast preparation rate, accurate heat input control, good arc stiffness, effectively reduced spatter, good workpiece formability, and the like; the rotary deposition mode is adopted to effectively control heat cycle, avoid abnormal structure growth, and simultaneously adopt an auxiliary interlayer hammering deformation means to optimize a deposition interface, so that the obtained AZ series magnesium alloy workpiece has the advantages of uniform structure, small grain, few defects, excellent strength and plasticity, and the like, and the process is simple and easy to popularize.

A cladding process for depositing metal cladding onto a hollow metal substrate at ultra-high deposition rates, including: applying softer metal cladding as at least one annular band around a circumferential periphery of the hollow metal substrate using a plasma-arc welding device; circulating a liquid heat transfer medium through an interior space of the harder metal, hollow metal substrate such that an outer surface of the substrate to which metal cladding is to be applied is maintained at desired temperatures throughout the cladding applying step; and controlling temperature of the circulating liquid heat transfer medium to be within a predetermined temperature range. The hollow metal substrate is formed of a harder metal than the metal cladding.

The invention discloses a building baffle plasma arc welding device, and particularly relates to the technical field of welding, the building baffle plasma arc welding device comprises a bottom plate, a rack is fixedly connected to the upper end of the bottom plate, a main support is fixedly connected to the upper end of the bottom plate, and two centrosymmetric deflection inclined plates are arranged at the upper end of the main support; an air cylinder is fixedly connected to one side of the main support, a telescopic rod is arranged at one end of the air cylinder in an extending mode, a sliding block is fixedly connected to one end of the telescopic rod, and the sliding block is in sliding buckle connection with the main support; according to the device, automatic feeding, assembling, welding and discharging of a first workpiece and a second workpiece can be achieved at the same time, the whole process is cyclically carried out, left-right movement of a sliding block is controlled through stretching and retracting of a telescopic rod, and the sliding block drives a square block to move left and right; the second connecting rod is driven to move back and forth in the rail sliding groove under the action of the inclined face, and the main gear rotates when passing through the rack.