1357results about "Plasma welding apparatus" patented technology

The invention discloses an automatic welding device for a rotary alloy furnace tube, and belongs to the technical field of arc welding equipment.The automatic welding device for the rotary alloy furnace tube comprises a base and a U-shaped bin located at the top of the base, and the two ends of the interior of the U-shaped bin are jointly provided with a centering clamping mechanism used for clamping the outer side of the furnace tube; a driving mechanism for providing power for the centering clamping mechanism to clamp the furnace tube is arranged on the outer side of the centering clamping mechanism, and a welding mechanism is arranged on the inner top of the U-shaped bin. A local sealing design is adopted for the inflation mechanism, the annular air bag is attached to the inner wall of the furnace tube after being inflated, an independent cavity communicated with the outside only through a welding seam gap is formed near the welding seam, the protection requirement can be met only by filling the local space with argon, the whole furnace tube or a large-range external space does not need to be filled, and compared with traditional overall argon filling, the argon filling efficiency is greatly improved. The argon consumption is greatly reduced, the industrial gas purchase cost is remarkably reduced, and the production cost investment is reduced.

The invention relates to the technical field of welding platforms, in particular to a multifunctional welding process experiment platform and a process optimization system.The process optimization method comprises the following steps that a welding process setting module is constructed, and a welding mode, a groove type and a heat input scheme are preset; outputting the initial process configuration parameter set to drive a welding execution unit to perform automatic welding operation according to the initial process configuration parameter set; extracting a multi-dimensional process response vector including a stability index, metal fusion depth distribution and a heat affected zone expansion degree; outputting a welding seam grade result according to a preset quality grading standard, and generating a feedback identifier; and after updating, inputting to the step S2 again to form closed-loop optimization control. According to the method, digital modeling and evaluation of key indexes such as the welding stability, the fusion depth and the heat affected zone are achieved, and the problem that a traditional process depends on visual inspection and experience judgment is solved.

The invention relates to the technical field of bridge steel plate welding, and discloses bridge steel plate welding equipment facilitating feeding and discharging, feeding and discharging conveying mechanisms are arranged on welding table bodies, alignment mechanisms are arranged on the welding table bodies, and a sliding rail structure is arranged between the two welding table bodies; two sets of fixing mechanisms with lifting functions are arranged at the lower end of the sliding track structure, a welding mechanism is arranged on the inner side of the sliding track structure, a tensioning assembly is arranged on the upper portion of the welding mechanism, and a driving assembly is arranged on the connecting face of the welding mechanism and the track. According to the welding device, plates can be welded through the plasma welding gun, driving wheels in the driving assembly can enable the welding mechanism to move along the sliding rail structure, so that thick steel plates such as bridge steel plates are welded, the vertical position of the welding gun can be adjusted through the fixing mechanism and the lower rotating cylinder, and the welding effect is improved.

The invention relates to the technical field of plasma cutting equipment, and discloses metal plate cutting equipment which comprises a bottom frame, a cutting mechanism, a cleaning mechanism and a collecting mechanism, the cleaning mechanism comprises a mounting plate, a polishing plate, an extrusion spring, an abutting plate and a water cooling assembly, and the mounting plate is slidably connected to the bottom frame through the collecting mechanism; a mounting groove is formed in the mounting plate, the extrusion springs are fixedly connected to the bottom and the top in the mounting groove, the abutting plate is fixedly connected to the extrusion springs, the grinding plate is detachably mounted on the abutting plate, the collecting mechanism is used for collecting slag falling during grinding, and the cutting mechanism is used for cutting a metal plate. The cleaning mechanism is arranged to be matched with the collecting mechanism, after the metal plate is cut, slag and burrs on the upper surface and the lower surface of the metal plate are polished, the burrs and the slag on the surface of the metal plate are removed and collected, and therefore the situation that the burrs and the slag remain on the surface of the metal plate, and the subsequent plate machining quality is affected is prevented.

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 discloses equipment and technology for plasma spray welding of a metal coating on the surface of a ball valve, and relates to the technical field of ball valve machining, the equipment comprises a base, two sliding tables, a lifting table, a clamping assembly, a guide rail mechanism, a sliding seat, a first telescopic support, a second telescopic support and a spray gun rod, the two sliding tables are symmetrically arranged on the base in a sliding mode, and the lifting table is arranged on the sliding tables; a clamping assembly is arranged on the lifting table, the guide rail mechanism is fixedly arranged at the center of the base, the sliding base is arranged above the guide rail mechanism in a sliding mode, a first telescopic support is fixedly arranged on the sliding base, a second telescopic support is vertically and fixedly arranged at the output end of the first telescopic support, and the spray gun rod is fixedly installed on the second telescopic support. The guide rail mechanism comprises a fixed table, a sliding block, a hydraulic telescopic rod, a guide block, a sleeve gasket and a connecting block. According to the method, the remodeling time and cost can be greatly reduced, the application range is effectively expanded, and the spray welding efficiency of the ball valve is further improved.

The invention belongs to the related technical field of welding, and particularly discloses an air energy water heater water tank inner container welding device which comprises a first machine base, a motor driving device, an industrial camera, a lifting machine and a second machine base, a lead screw loading table is arranged above one end of the first machine base, and a lead screw is rotationally arranged on the inner side of one end of the lead screw loading table; the lead screw is connected with an output shaft of the motor driving device, a sliding base is slidably installed outside the lead screw loading table and is in threaded fit with the lead screw, the lifting machine is arranged on the upper surface of the sliding base, a plasma welding gun is connected to the outer side of the lifting machine through an arranged movable frame rod, and the second machine base is arranged on one side of the outer wall of the first machine base. A pipe fixing mechanism is arranged on the upper surface of the second machine base, a frame base is arranged at the position, close to the middle, of the upper surface of the second machine base, and hanging and pulling mechanisms are arranged at the two ends in the frame base correspondingly.

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 provides a plasma welding tool for water pump impeller machining, and relates to the technical field of welding tools, and the plasma welding tool comprises a basic frame assembly, a rotating mechanism assembly, a lifting adjusting mechanism assembly, a positioning mechanism assembly and an auxiliary welding system. The auxiliary welding system comprises a main control unit, a sensor unit, a parameter storage unit, a welding parameter dynamic generation module and a man-machine interaction unit. According to the scheme, aiming at traditional tool pain points, parameters are dynamically generated through multi-sensor collection and machine learning, PID closed-loop correction is conducted, and the welding quality stability is improved; manual intervention is reduced and the period is shortened by means of automatic regulation and control of the main control unit and man-machine interaction; and different impellers are quickly adapted by virtue of the classification process database and the welding parameter dynamic generation module, so that the adjustment time consumption is reduced, the quality, efficiency and flexibility are comprehensively improved, and the production cost is reduced.

The invention features a replaceable cartridge for a plasma arc torch. The cartridge includes a cartridge body having a first section and a second section. The first and second sections are joined at an interface to form a substantially hollow chamber. The interface provides a coupling force that secures the first and second sections together. The cartridge also includes an arc constricting member located in the second section; an electrode included within the substantially hollow chamber; and a contact start spring element affixed to the electrode. The spring element imparts a separating force that biases the electrode toward at least one of the first section or the second section of the body. The separating force has a magnitude that is less than a magnitude of the coupling force.

The invention discloses a pressure vessel steel plate blanking plasma cutting machine, and relates to the technical field of integrated stamping, the pressure vessel steel plate blanking plasma cutting machine comprises a machine table and a bearing frame slidably mounted on the machine table, a grating is fixed on the machine table, and the pressure vessel steel plate blanking plasma cutting machine further comprises sliding seats slidably mounted on the two sides of the machine table; the two sliding seats are connected through a rectangular rod, a sliding table is slidably installed on the rectangular rod, a lifting plate is slidably installed on the side, facing the bearing frame, of the sliding table, a cutting gun is fixed to the lifting plate, a lower pressing tool is slidably installed on the bearing frame, and the two sides of the lower pressing tool are each fixedly provided with two guide rods. Directional transfer work in a high space is achieved through cooperation of the rolling turning assembly and the telescopic part, namely, transfer from a point A to a point B is achieved, the positions of the point A and the point B are changed along with movement of the sliding table and the cutting gun all the time, but the path from the point A to the point B is not changed, and therefore any material plate cut by the cutting gun can rotate to the lower pressing tool, and the cutting efficiency is improved. Stamping is completed through downward pressing of the follow-up frame.

The invention belongs to the technical field of duck roaster processing, and particularly discloses a duck roaster processing furnace body welding device which comprises a working table, a supporting assembly is connected to one side of the upper end of the working table, a supporting seat is connected to the middle of the upper end of the working table, and rotating blocks are rotationally connected to the upper portions of the two sides of the supporting seat; one side of the supporting seat is connected with a driving motor, the output end of the driving motor is connected with the lower portion of one side of one rotating block, the upper ends of the two rotating blocks are connected with a supporting block, the upper end of the supporting block is connected with a supporting plate, and the two sides of the upper end of the supporting plate are connected with electric sliding rails. Stable clamping, accurate positioning and efficient welding of a duck roaster body of a special structure are achieved, the technical problem that traditional equipment is difficult to adapt to an inclined roaster body is solved, and the welding quality and the production efficiency are remarkably improved.

The invention provides a steel arch follow-up hole cutting device and a steel arch hole cutting method applying the same. The steel arch follow-up hole cutting device comprises a positioning mechanism, a follow-up mechanism and a hole cutting mechanism. The rail assembly is rotationally connected with the fixing assembly and comprises a sliding rail component and a rack component which extend in the same direction, the rotary sliding assembly is slidably connected with the sliding rail component, the active driving assembly is fixedly connected with the rotary sliding assembly, and the active driving component is separably meshed with the rack component; the guide frame is rotationally connected with the rotary sliding assembly, the follow-up guide assembly and the follow-up positioning assembly are fixedly connected with the guide frame, the follow-up guide assembly comprises at least two guide wheel sets which are arranged at intervals and can stretch out and draw back, and the guide wheel sets are used for clamping a steel arch. The follow-up positioning assembly is used for being detachably connected with the steel arch so that the follow-up mechanism can move along with the steel arch. The hole cutting mechanism is movably connected with the follow-up mechanism and comprises a cutting gun arranged in a rotating mode, and the cutting gun is used for drilling holes in the steel arch frame.

The invention relates to an automatic positioning and cutting device for tunnel section steel arch web trepanning, and belongs to the technical field of arch cutting equipment. The device comprises a conveying mechanism and a positioning and cutting mechanism, the conveying mechanism is used for conveying an arch frame, the positioning and cutting mechanism comprises a positioning assembly, a linkage assembly and a cutting assembly, the positioning assembly is arranged in front of the cutting assembly in the conveying direction of the arch frame, and the linkage assembly is connected with the positioning assembly and the cutting assembly. The lowest height of the positioning assembly is lower than that of the cutting assembly, the weight of the positioning assembly is larger than that of the cutting assembly, the positioning assembly comprises a first inclined face, and when the arch frame is conveyed in the conveying direction, a flange plate of the arch frame can abut against the first inclined face and slide relatively to push the positioning assembly to move upwards by a preset distance; the positioning assembly moves upwards to drive the cutting assembly to move downwards to be close to the web through the linkage assembly, and the cutting assembly is used for cutting and trepanning the web of the arch frame. The method has the effect of improving the problem of poor positioning precision and reliability of trepanning of the web of the arch center.

The invention relates to the technical field of cutting equipment, and provides heat exchanger tube nest numerical control cutting equipment and a high-precision cutting method.The heat exchanger tube nest numerical control cutting equipment comprises a base, a first supporting plate, a second supporting plate and a third supporting plate are arranged on the base in the length direction of the base, and the first supporting plate is slidably connected to the base; the second supporting plate and the third supporting plate are both fixed to the base. According to the vertical cutting device, a second rotating disc is accurately controlled to rotate through a third driving mechanism, the second rotating disc rotates to drive a stop lever to move in a limiting groove, a support is pushed to rotate with a third hinged shaft as the center, and the spraying direction of a plasma spraying gun is tangent to the tube wall of the tube nest; when plasma is cut, a reflecting surface is formed on the inner wall of the other side, so that plasma hedging is caused, the plasma beam is jetted in the tangential direction through tangent angle cutting, the hedging phenomenon is avoided, the cutting gap is controlled, and the cutting precision is improved compared with a traditional mode.

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 present invention generally relates to methods and apparatuses adapted to perform additive manufacturing (AM) processes and the resulting products made therefrom, and specifically, to AM processes that employ an energy beam to selectively fuse a base material to produce an object. More particularly, the invention relates to methods and systems that use reactive fluids to actively manipulate the surface chemistry of the base material prior to, during and / or after the AM process.

A plasma cutting protection liquid, and a preparation method therefor, and a use thereof. The plasma cutting protection liquid comprises, in parts by mass: 8 to 40 parts of a water-soluble resin, 1 to 10 parts of a cosolvent, 0.1 to 8 parts of nanoscale inorganic particles, 0.5 to 3 parts of a flow promoter, 0.1 to 0.5 parts of an ultraviolet light absorber, and 50 to 100 parts of a solvent, wherein the water-soluble resin contains amide groups, and the water-soluble resin is a partially cross-linked resin. By using the partially cross-linked resin containing the amide groups, the partially cross-linked structure can form a three-dimensional network structure to inhibit molecular movement so as to improve the high-temperature resistance. The resin contains a large number of hydrophilic amide groups, which extremely easily form hydrogen bonds with water. After a cutting process is completed, a film layer formed by the protection liquid can be easily removed, and the cleaning process is simple. The inorganic particles can further improve the heat-resistant temperature of the cutting protection liquid and can also improve the compactness of the film layer, thereby facilitating the formation of a uniform film layer.

The invention relates to an alloy having the following composition, by weight:16.5%≤Cr≤25.%11.%≤Mo≤18.%2.%≤W≤7.%Fe≤1.%Mo+W≤-0.5×(Cr+Fe)+30⁢%Mo+W≥-0.5×(Cr+Fe)+25⁢%Ti+Ta≤0.8%0.01%≤Si≤0.75%0.01%≤Al≤0.35%0.01%≤Mn≤0.35%Ca≤0.005%Mg≤0.005%Nb≤0.01%0.001%≤C≤0.05%0.001%≤N≤0.05%S≤0.003%P≤0.005%optionally, 0.0010%≤rare earths≤0.015%, the silicon content being less than or equal to 0.25% in the presence of rare earths at a content comprised between 0.0010% and 0.015%,the rest being nickel and unavoidable impurities resulting from the manufacturing, the nickel content being greater than or equal to 54%.

The present invention discloses a plasma cutting machine for steel structures, belonging to the field of plasma cutting, comprising a base, wherein a cavity for accommodating liquid is provided inside the base, and a support grid frame is fixedly connected to the inner wall of the cavity, and a plurality of support flanges are integrally formed on the upper end of the support grid frame; an X-axial displacement portion is connected to the base, and a Y-axial displacement portion is connected to the movable end of the X-axial displacement portion, and a Z-axial displacement portion is connected to the movable end of the Y-axial displacement portion, and a mounting seat is connected to the movable end of the Z-axial displacement portion, and a plasma gun head is fixedly connected to one side of the mounting seat; cutting of steel structure workpieces is achieved in water, and underwater plasma cutting has a certain cooling effect on the workpiece, cutting torch and arc area. This rapid cooling limits the lateral expansion of the plasma arc at the upper part of the kerf, the melting range of the upper part is "compressed", and the width change of the lower part is relatively small, thereby reducing the taper.

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 relates to the technical field of plasma welding devices, in particular to an assembly type building welding device with an angle adjusting function. Comprising a rack, a shear type position adjusting mechanism is arranged on the rack, at least three welding mechanisms are installed on the shear type position adjusting mechanism, the distance between every two welding mechanisms is synchronously adjusted, each welding mechanism comprises a welding frame connected with the rack in a sliding mode, a first air blowing pipe and a front visual detection module are sequentially installed on the welding frame from front to back, and two sliding bases are connected to the welding frame in a sliding mode; hanging shafts connected with the shear type position adjusting mechanism are installed on the two sliding seats, an angle adjusting frame is rotationally connected to the welding frame, and a laser preheating gun, a welding gun, a second air blowing pipe and a rear visual inspection module are sequentially installed on the angle adjusting frame. The device has the beneficial effects that by means of the linkage design of the shear type position adjusting mechanism and the angle adjusting system, cooperative and synchronous adjustment of the distance between the multiple welding mechanisms and the angle of the welding gun is achieved.

This invention discloses a metal pipe processing and cutting equipment and method, including a feeding clamping rotating assembly and a protective bearing kit. A plasma cutting mechanism connected by bolts is provided on one side of the upper part of the feeding clamping rotating assembly, and the metal pipe body is clamped on the inner side of the feeding clamping rotating assembly. The device mainly utilizes the output of a central motor to adjust the central gear, side gear, and flower-shaped lead screw, thereby adjusting the expansion block to a suitable radius. Since the rear and side elastic folding fabrics have an elastic folding structure, they can be adaptively adjusted to a suitable radius. Combined with the output of the electric rotating seat, upper rotating frame, and lower rotating frame, the bearing belt can be adjusted to a suitable taut length position as needed. This enhances the adjustment effect of the positioning adjustment component and the protective bearing kit, enabling the equipment to process products of multiple sizes.

The invention discloses welding equipment facilitating positioning and clamping and used for machining of an electric fire stove burner, and relates to the technical field of plasma welding machining. The welding equipment comprises a welding table and further comprises a clamping unit, a moving part, a lifting part and a welding unit; a clamping unit is fixedly connected to the top of the welding table, a moving part is fixedly connected to the top of the welding table, a lifting part is slidably connected to the outer wall of the moving part, and a welding unit is fixedly connected to the bottom of the lifting part. The motor drives the adjusting assembly to precisely adjust the clamping assembly so that the clamping assembly can be tightly attached to the outer wall of the lower disc to complete stable clamping, the upper disc is clamped through the cooperation of the extrusion part and then driven by the lifting part to move downwards, and precise attachment of the welding position of the upper disc and the lower disc is achieved; and the upper disc and the lower disc are corrected and positioned in real time, vertical alignment and tight fitting of welding positions are ensured, and the problem of welding dislocation easily caused by smooth welding surfaces of the upper disc and the lower disc of the leveling device is solved.

A high-strength multi-functional coating with a multi-level structure, and a preparation method thereof are provided. In this application, a high-efficiency cladding method based on infrared laser-plasma synchronous compounding is adopted to prepare a micro-scale columnar crystal structure that is perpendicular to a substrate and serves as a pure thermally and electrically conductive channel, and to prepare submicro- and nano-scale ceramic reinforcement phases between columnar crystals, where the submicro- and nano-scale ceramic reinforcement phases are distributed along grain boundaries. The multi-level organizational structure of this application can simultaneously improve the hardness, wear resistance, and electrical and thermal conductivities of a cladding layer for a copper alloy and can improve the reliability of damage protection for a copper alloy component used in an extreme environment.

The invention relates to the technical field of stainless steel plate welding, and provides an automatic plasma arc welding method and system for stainless steel plates, and the method comprises the steps that basic information, first characteristic information and second characteristic information are obtained; acquiring a first characteristic adjustment coefficient according to the basic information and the first characteristic information, and acquiring a second characteristic adjustment coefficient according to the second characteristic information of the stainless steel plate; a molten pool change real-time feedback item is obtained according to the form real-time change information and the first characteristic adjusting coefficient, and a temperature gradient real-time feedback item is obtained according to the temperature field distribution information and the second characteristic adjusting coefficient; and the wire feeding speed is adjusted according to the molten pool change real-time feedback item and the temperature gradient real-time feedback item. When the molten pool and the temperature gradient change, the wire feeding speed can be dynamically adjusted, it is ensured that the molten pool obtains enough deposited metal to stabilize the molten pool and slow down the temperature gradient, cold cracks are prevented, and meanwhile the welding seam forming defect caused by too fast / too slow wire feeding is avoided.

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 a tank body assembling and welding device, and relates to the technical field of welding equipment, the assembling device comprises a left assembling clamping mechanism and a right assembling clamping mechanism, the left assembling clamping mechanism and the right assembling clamping mechanism are arranged on a base and are oppositely distributed, and each assembling clamping mechanism comprises a sliding clamping seat arranged on the base; the sliding clamping bases are driven by a clamping power unit arranged on the base to be arranged in a sliding mode, end socket clamps used for clamping end sockets are arranged at the close ends of the two sliding clamping bases, and the two end socket clamps clamp the end sockets to be close to each other to be assembled with the barrel. The assembling and jacking mechanism is arranged on the base and located between the two assembling and clamping mechanisms, and the assembling and jacking mechanism is used for supporting and jacking the barrel, so that the barrel is aligned with the sealing heads at the two ends of the barrel; the welding device comprises a pre-welding mechanism and a welding mechanism and is used for welding the end socket and the barrel which are assembled. Therefore, the problem of tank body welding in the prior art is solved, the tank body welding efficiency is improved, the welding quality is improved, the labor intensity is relieved, and the labor cost is reduced.

The invention relates to the technical field of plasma surfacing equipment, and discloses a supersonic plasma surfacing equipment spray gun which comprises a spray gun body, the top of the spray gun body is communicated with a connecting pipe, a sealing cover is inserted into the top of the connecting pipe, an inserting nozzle is arranged at the bottom of the spray gun body, a nozzle is inserted into the surface of the inserting nozzle, and a protection ring is fixedly connected to the surface of the spray gun body. The surface of the protection ring is fixedly connected with an installation block, the inner wall of the installation block is in threaded connection with a screw rod, and the protection component is installed on the surface of the protection ring and used for protecting the nozzle. The sealing cover is arranged at the top of the connecting pipe, so that impurities are prevented from entering the spray gun during transportation or storage, and when a nozzle at the bottom of the spray gun needs to be protected, a semicircular frame is pushed to slide on the surface of a protection ring and slides in a sliding groove through a sliding block, and the stability of the semicircular frame during movement is improved.