143 results about "Type metal" patented technology

The utility model relates to an enlarged type metal composite viscoelastic damper. The bottom of a metal damper is fixedly connected with an enlarged type viscoelastic damper. The metal damper comprises a T-shaped core plate, L-shaped restraining plates are fixedly connected to the two opposite sides of the T-shaped core plate in the vertical direction, friction areas are arranged between the tops, located on the vertical plane, of the L-shaped restraining plates and the T-shaped core plate, fixing areas are arranged between the bottoms of the L-shaped restraining plates and the T-shaped core plate, and energy dissipation webs are arranged on the portions, between the fixing areas and the friction areas, of the T-shaped core plate. The amplified viscoelastic damper comprises an upper connecting plate, an amplifying lever is hinged to the lower portion of the upper connecting plate, an inner steel plate is hinged to the lower portion of the amplifying lever, the inner steel plate is connected with an outer steel plate through a viscoelastic layer, and the outer steel plate is hinged to the amplifying lever through a fulcrum shaft. The defects of a metal damper can be overcome under small earthquakes, good energy consumption is achieved, the amplifying damper can be protected against excessive displacement and failure under large earthquakes, the damper consumes energy in a multi-stage mode, and the anti-seismic performance of the structure is improved. The components are connected through bolts, are highly assembled and are convenient to replace.

The invention discloses an environment-friendly metal combined smelting furnace, relates to the field of metal smelting equipment, and aims to solve the problems of low efficiency, heat energy waste, waste gas pollution, inconvenience in operation and the like of a traditional smelting furnace. The environment-friendly metal combined smelting furnace comprises a smelting furnace support, a rotatable high-temperature smelting furnace is arranged on the support, and a liftable metal preheating furnace is arranged above the support; a smelting crucible and a combustor are arranged in the high-temperature smelting furnace, and a multi-layer heat insulation structure is arranged on the outer side; a preheating box is arranged in the metal preheating furnace, forms an exhaust cavity with the furnace wall, and is butted with the high-temperature smelting furnace through a waste gas guide pipe to realize secondary combustion of waste gas; according to the equipment, waste heat recovery and waste gas harmless treatment are achieved, the energy utilization rate and the environmental protection property are improved, operation is convenient and fast, and the equipment is suitable for smelting of various kinds of metal.

The invention discloses a wall type Z-shaped metal torsion tube damper anti-seismic system and method. The wall type Z-shaped metal torsion tube damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a Z-shaped metal torsion tube damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the Z-shaped metal torsion tube dampers are arranged between the paired cantilever walls and connected with the cantilever walls so as to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the Z-shaped metal torsion tube damper is arranged to replace a traditional mild steel metal damper and a viscous damper to conduct damping design of a building structure, the problem that the low-cycle fatigue performance of the traditional metal damper is poor is solved, the oil leakage risk of the viscous damper is avoided, and the anti-seismic performance of the building structure is improved. Moreover, due to the structural design in the damper, the influence of the bending and shearing effect on the deformation of the torsion tube under the action of an axial load is eliminated, so that the section of the torsion tube is always kept a stable circular section in the hysteresis energy consumption period of the torsion tube, and the energy consumption efficiency is ensured.

The utility model relates to the field of metal wiring terminal production equipment, in particular to an automatic feeding and discharging type metal wiring terminal stamping die which comprises a bottom frame, an overturning pressure-bearing seat is rotationally installed on the bottom frame, a metal workpiece is borne on the overturning pressure-bearing seat through a lower die seat, and a punch used for stamping the metal workpiece is installed above the bottom frame. And after the overturning pressure-bearing seat is overturned, the processed metal workpiece can be popped out by utilizing the rotating rod to realize unloading. According to the stamping die, automatic feeding is achieved through the feeding barrel and the pushing piece, the metal workpiece is extruded through the cooperation of the extrusion plate, the feeding speed is high, and automatic positioning and fixing can be achieved. According to the utility model, the overturning pressure-bearing seat is matched with the rotating rod to realize automatic unloading of metal workpieces; the stamping push rod is used for pushing the push plate to move, so that stamping of the punch, overturning of the overturning pressure-bearing seat and ejection of a machined metal workpiece through the rotating rod can be achieved in sequence. Therefore, the equipment integration level is higher, and the use is safer and more reliable.

The invention relates to a high-pressure air separation liquid valve with a multi-stage low-temperature self-tightening sealing structure, which relates to the technical field of low-temperature high-pressure fluid control and comprises a valve body assembly, a multi-stage sealing assembly and a valve rod thermal compensation assembly. The multi-stage sealing assembly is arranged on the valve element in a stepped mode and comprises a primary metal hard sealing ring, a secondary modified PTFE sealing ring and a three-stage self-tightening type metal spring energy storage ring, and the main sealing function, the flexible compensation function and the pressure self-tightening function are achieved respectively. The valve rod thermal compensation assembly comprises a titanium alloy valve rod and a copper-nickel alloy thermal buffer sleeve, and the displacement of the sealing face is automatically compensated at the low temperature through the difference between a reserved gap and the thermal expansion coefficient of a material. Through multi-stage sealing cooperation and intelligent thermal compensation, the problem of sealing leakage caused by material failure and thermal deformation under the ultralow-temperature and high-pressure working conditions is effectively solved, all-working-condition reliable sealing is achieved, the safety of the valve in the extreme environment is remarkably improved, and the service life of the valve in the extreme environment is remarkably prolonged.

The invention discloses a novel metal test piece end face polishing and grinding device which comprises a test piece chuck, a pressing device, a straight driven piece, a plane cam, a movable sliding block assembly body, a linear guide rail structure and a movable frame. The test piece chuck comprises a dovetail matching block, a test piece chuck block, a pressing screw and a chuck fixing screw. The pressing device comprises a cover plate, a compression spring, a lifting block, a threaded pin and a rolling bearing; the straight follower comprises a lifting block, an indexing block and a limiting screw. By means of the novel metal polishing and grinding device, the problem that after traditional manual polishing and grinding equipment conducts polishing and grinding, cambered surfaces and fillets appear on the polishing and grinding end face is solved, the yield of metallographic samples and the utilization rate of consumable items such as abrasive paper are increased, a linear one-way polishing and grinding mode is researched, developed and provided, and a novel semi-automatic mechanical polishing and grinding device is designed.

The utility model provides an interlayer metal plate modeling unit type structure, and relates to the technical field of interlayer metal plates, the interlayer metal plate modeling unit type structure comprises a transverse keel and a vertical keel, the transverse keel and the vertical keel are fixed through vertical butt joint, the transverse keel is an exposed main keel frame, and the vertical keel is a hidden inner keel frame. The transverse keels and the vertical keels are fixed through corner connectors in a nailing mode. Connecting inserting cores are fixed to the connecting positions of the two ends of the transverse keels and the two ends of the vertical keels and serve as inner buckling structures in the vertical direction. The utility model has the beneficial effects that a steel keel is changed into an aluminum alloy keel, the modeling keel and the metal panel are assembled into a plate in a factory and are conveyed to a site, and the adjustable installation of the metal plate is realized through the lap joint amount of the support arms and the thickness of the cushion block; according to the modeling structure, exposed transverse keels which are transversely and longitudinally connected and vertical keels which are hidden on the inner face serve as assembling structures of metal plates, the metal plates and the exposed transverse keels are synchronously assembled, then field assembling is conducted, and integrated assembling and installing of modeling metal plate units are achieved.

A furan resin sand filling device for a large metal casting mold relates to the technical field of part casting and comprises a feed box, a connecting pipe and a conveyor, the connecting pipe communicated with the feed box is arranged at the upper end of the feed box and rotatably connected with the feed box, the other end of the connecting pipe is connected with a stirrer, the conveyor is arranged on one side of the feed box, and a driving motor is arranged on the other side of the feed box. The driving motor drives the conveyor to rotate, one end of the conveyor is communicated with the material box, a discharging pipe is arranged on the lower portion face of the other end of the conveyor, and a flow guide pipe is arranged below the discharging pipe. The furan resin sand mixing device is high in practicability and very convenient to use, the baffle and the sealing plate are arranged on the discharging pipe, excessive contact between the mixed furan resin sand and oxygen is avoided, premature curing of the furan resin sand is avoided, and production materials are saved; and the grid, the vibrator and the exhaust pipe are arranged on the flow guide pipe, so that waste gas is absorbed during charging, and the body health of production personnel is ensured.

The invention relates to the field of metal heat treatment equipment, in particular to an improved reference adjustment type metal strip annealing furnace mouth sealing method and device. Two sealing compression rollers which are arranged up and down are arranged at a furnace opening of the annealing furnace, the lower sealing compression roller is arranged to be of a horizontal adjusting structure with the fixed height position and the adjustable horizontal position, and the upper sealing compression roller is arranged to be of an inclined adjusting structure with the adjustable height position and the adjustable horizontal position; the position of the upper sealing compression roller and the position of the upper sealing compression roller in the horizontal direction can be adjusted. The fixed height of the lower sealing compression roller is used as an adjusting reference, and a gap between the upper sealing compression roller and the lower sealing compression roller is adjusted by adjusting the height position of the upper sealing compression roller, so that an improved reference adjusting type sealing structure is formed; and the height position of the upper sealing compression roller is adjusted according to the thickness specification of the workpiece, so that the gap between the upper sealing compression roller and the lower sealing compression roller is the minimum gap allowing the workpiece to pass through. The device has the characteristics of convenience in adjustment, good sealing effect, low use cost and the like.

The invention discloses automatic constant-temperature reciprocating rolling equipment and process for a titanium alloy bar cogging mill, and belongs to the technical field of steelmaking continuous casting and rolling. The equipment comprises two rotatable movable metal detector devices, a feeding induction heating system and a discharging induction heating system, wherein the two rotatable moving type metal detector devices are oppositely arranged on the left side and the right side of a roller respectively, the feeding induction heating system is arranged on the front side of the feeding conveying roller way, and the discharging induction heating system is arranged on the front side of the discharging conveying roller way. By means of the rotatable movable metal detector device, the detection precision is improved, the device adapts to the production rhythm of a cogging mill, the steel throwing position can be controlled to be close to a roller as far as possible, the rolling efficiency is improved, the titanium blank temperature loss in the rolling process is reduced, and meanwhile the manual operation risk is reduced. In addition, the situation that the temperature of the head and the tail of the blank is not uniform is improved through the induction heating system, and therefore the temperature is kept constant in the whole rolling process.

This invention discloses a submerged arc additive manufacturing (SAW) device and method for large metal components. The welding torch is mounted on the Z-axis motion system of a multi-axis motion mechanism. One end of the flux feeding pipe is located on one side of the welding torch, and the other end is connected to the output end of the feeding mechanism. The inlet of the flux recovery pipe is located on the other side of the welding torch and is fixed on the first R-axis motion system. The other end of the flux recovery pipe is connected to one end of a collecting device, and the other end of the collecting device is connected to the input end of a flux and slag screening device. The output end of the flux and slag screening device is connected to the input end of the feeding mechanism. The slag cleaning device is located on the same side of the welding torch as the flux recovery pipe and is fixed on the second R-axis motion system. A CCD camera monitoring system is mounted on the third R-axis motion system. This invention combines conformal automatic flux application and slag cleaning functions to achieve automated printing, flux recovery, and slag removal, reducing flux waste, saving labor costs, and improving production efficiency.

The invention discloses a shaft sleeve type metal part hole machining device and a machining method, relates to the technical field of metal machining, and solves the problems that when an existing drilling machine is used for machining shaft sleeve type part inclined holes, clamping is tedious, efficiency is low, precision is not prone to being guaranteed, equipment universality is poor, and the cost of a special clamp is high. The drilling machine comprises a base, a workbench arranged on the base and a drilling structure, the drilling structure comprises a main shaft and a main shaft box for mounting the main shaft, and an adjusting structure for adjusting the mounting angle of the main shaft is arranged between the base and the main shaft box; the adjusting structure comprises a mounting rod arranged on the base, a connecting rod perpendicularly arranged on the mounting rod and a rotating block fixedly arranged on the spindle box, the rotating block is rotationally connected with the connecting rod, a fixing piece is arranged between the rotating block and the connecting rod, a reinforcing piece is arranged between the spindle box and the connecting rod, and a feeding piece is arranged between the rotating block and the connecting rod. And the reinforcing piece is positioned between the mounting rod and the fixing piece. The device has the advantages of being simple in structure, high in efficiency and good in universality.

The application discloses a die for a coaxial cable spiral metal pipe conductor and a texturing method, and technical scheme points are as follows: a metal pipe body, a texturing assembly arranged outside the metal pipe body and used for improving texturing productivity of the coaxial cable spiral metal pipe conductor; the texturing assembly comprises a texturing cutter seat arranged outside the metal pipe body, a plurality of first fixing holes are formed in one end of the texturing cutter seat, a plurality of positioning columns are fixedly installed at the other end of the texturing cutter seat, and a head outer circle is arranged outside the texturing cutter seat; the super wear resistance of a tungsten steel blade edge is combined with a reversible design of a double-blade handle, so that the total effective processing mileage of a single set of tooling is improved by several times compared with a traditional die, which directly leads to a significant decrease in die amortization cost of a unit length product and a significant reduction in time loss and labor cost caused by stoppage and die replacement.

The invention discloses a medium-frequency induction heating type metal pipe precise bending device which comprises a heating furnace, a pushing table and a bending table are symmetrically distributed on the two sides of the heating furnace, a clamping piece for clamping a to-be-bent metal pipe is arranged on the bending table, and a clamping piece for clamping the to-be-bent metal pipe in the bending process is arranged on the clamping piece. The supporting piece is used for supporting the inner wall of the metal pipe, and a bending piece for bending the metal pipe is arranged on the bending table; according to the metal pipe bending device, through the supporting pieces, the supporting pieces are retained in the bending area, do not move along with the metal pipe and continuously provide internal support for the pipe wall by utilizing the magnetic adsorption force of the supporting blocks and the clamping blocks, the multiple sets of supporting blocks adapt to the bending track of the metal pipe through the universal joints, and the pipe wall is effectively prevented from being flattened or wrinkled or the ovality exceeds the standard in the bending process; the section roundness and the wall thickness uniformity of the bent pipe are guaranteed, the bending quality of the high-pressure pipeline is improved, meanwhile, magnetic connection is convenient to assemble and disassemble, and the operation efficiency is greatly improved.

A formed sheet metal material and methods, tools and apparatus for forming the sheet metal material in which a pattern of projections and depressions are cold worked in a first portion and, simultaneously, indicia is embossed in a second portion of the sheet material. The cold worked portion is formed with the projections and depressions configured and distributed such that lines drawn on a surface of the formed sheet material between adjacent rows of projections and depressions are not rectilinear. The indicia is indicative of the alignment between the tools.

The application discloses an arc-shaped trimming device for metal product production and belongs to the technical field of metal product trimming machines. The arc-shaped trimming device comprises a processing table, a fan-shaped seat fixed to the processing table through screw threads, a positioning mechanism and a hydraulic cylinder fixed to the fan-shaped seat, a rotating device installed at the end of the piston rod of the hydraulic cylinder, a connecting plate, the connecting plate being fixed to the end of the piston rod of the hydraulic cylinder, a rotating frame rotatably installed on the connecting plate, and a trimming mechanism installed on the rotating frame. The trimming device can conveniently position and install and quickly disassemble and process plate-type metal products. The second cutter moving in an arc line direction is arranged to realize arc-shaped trimming processing of the plate-type metal products. The second cutter moving in a straight line direction is arranged to realize straight line trimming processing of the plate-type metal products at multiple angles. Therefore, the arc line and the straight line trimming operations are combined to realize complex trimming processing of the plate-type metal products, and the trimming device is convenient to use and operate.

The utility model relates to alloy steel wire technical field, and disclose a kind of chromium-nickel alloy steel wire, including steel wire main part and the setting in the shaping structure and tensile structure of steel wire main part, steel wire main part side wall is provided with auxiliary cutting structure, when using the alloy steel wire to cut material, material is cut by repeatedly pulling and pulling main steel wire back and forth quickly, in the cutting process, the high hardness alloy ring of main steel wire side wall protrusion carries out high-speed effective cutting to material, the cutting generated swarf is discharged from the side of main steel wire by chip groove, avoid the swarf accumulation between main steel wire and high hardness alloy ring to influence cutting efficiency and accuracy, in some cases where steel wire needs to be bent, by the shaping of certain degree of metal wire being set in main steel wire, excessive rebound is avoided, four buffer holes being set on main steel wire save material while also bring some ductility to main steel wire, so that bending is more convenient.

The invention provides a thermal power plant metal welding visual management method and system based on BIM, and relates to the technical field of welding. The method comprises the steps that metal welding material information used for metal welding is acquired; establishing a pixel granularity mapping rule, inputting the metal material type, the metal material pore density and the welding surface roughness into the pixel granularity mapping rule, and determining visual pixel processing granularity; an initial welding visual image set in the metal welding process is collected, a BIM visual rendering engine platform is connected, pixel grid granularity processing is conducted on the initial welding visual image set according to the visual pixel processing granularity, and a first welding visual image set is obtained; and carrying out welding defect detection on the first welding visual image set, and outputting a welding visual defect image. The technical problem that in the prior art, the welding management quality is poor can be solved, and the technical effect of improving the welding management quality is achieved.

The application belongs to the technical field of plasma arc positioning welding, in particular to a positioning device for metal pipeline welding, which comprises a working base plate, a moving support frame and a multi-axis welding mechanical arm, the end of the multi-axis welding mechanical arm is fixedly provided with a plasma arc welding head, the welding station comprises a circular arc strip plate and positioning members one and two movably installed on the inner side of the top of the circular arc strip plate, the metal belt in the form of a ring outside the clamping structure is wound, the diameter of the ring is reduced, gradually adheres to the outer side of the curved part of the L-shaped metal pipe, when the metal belt is gradually tightened, the metal belt is inclined and closely adheres to the outer side of the curved part of the L-shaped metal pipe, and the clamping structure abuts against the outer side of the curved part of the L-shaped metal pipe, because the positioning member one and the positioning member two are arranged in the same way, the positioning member one and the positioning member two will exert a cross tension on the curved part of the L-shaped metal pipe, thereby positioning the curved part of the L-shaped metal pipe.

The invention discloses a special-shaped metal material laser welding joint defect automatic detection method and system, and relates to the technical field of metal welding detection. Comprising the following steps: data acquisition and processing: acquiring material characteristics, process parameters and welding joint data, and cleaning the data; defect prediction: based on the laser welding digital twin model, simulating a laser welding process, tracking dynamic behaviors of a molten pool, predicting defects of a welding joint, and sending out defect early warning to obtain defect prediction data; and defect detection and classification: based on a welding joint defect detection model, automatically generating a detection path according to defect prediction data. According to the method, the welded joint defect detection model is constructed, and the optimized detection path is automatically generated, so that the defect detection is converted from blind scanning to purposeful accurate screening, and the defect detection efficiency is improved; a laser welding digital twinborn model is constructed, the welding process is simulated, the bottom state of a molten pool is tracked in real time, defects generated in the welding process are predicted in real time, and the defect missing detection problem is reduced.

The invention relates to the technical field of metal processing, in particular to a large metal surface coating production line pretreatment phosphating device which comprises a phosphating box and further comprises a collecting tank arranged at one corner of the bottom end of the phosphating box, a sewage pumping pipe is arranged on the phosphating box, one end of the sewage pumping pipe is located in the collecting tank, and the other end of the sewage pumping pipe is located in the collecting tank. According to the device, the collecting tank is arranged at one corner of the bottom end of the phosphating box body and is matched with the sewage pumping pipe and the external water pump, sediment can be pumped out in time, and the situation that the phosphating effect is affected due to sediment accumulation is avoided; the scraping plate can be driven by the circulating driving part to circularly move in the box body, bottom sediments are effectively pushed into the collecting tank, and the bottom of the box body is kept clean; the water absorption elastic bag absorbs water on the lower layer when the scraper is located at the bottom end of the box body, and when the scraper moves to the upper layer, the extrusion part and the scraper are matched to extrude and discharge the water, so that the water in the box body is mixed up and down, the concentration of a phosphating solution is uniform, and the phosphating quality and stability of the metal surface are improved.

The utility model discloses an efficient metal die-casting die which comprises a base, a lower die body is fixedly connected to the upper portion of the base, a workpiece groove is clamped in the lower die body, an upper die body is connected to the lower die body in a lap joint mode, a movable plate is connected to the outside of the workpiece groove, and a locking structure is connected to the interior of the lower die body in a sliding mode. A locking structure is arranged on the back face of the lower die and in lap joint with the movable plate, a pop-up structure is arranged on the back face of the lower die and connected with the movable plate, the pop-up structure comprises a fixed column, an auxiliary plate and a ratchet plate, a lap joint plate is slidably connected to the outside of the fixed column, and a spring is connected to the outside of the fixed column in a sleeving mode. Through the arrangement of the workpiece groove, the moving plate and the pop-up structure, the automatic pop-up function of the workpiece groove in the lower die can be achieved through the cooperation of the spring, the baffle and the ratchet plate, workpieces in the workpiece groove can be conveniently and independently taken out or cleaned subsequently, other workpieces can be conveniently machined subsequently, and the machining efficiency is improved. And the flexibility of the die-casting die is guaranteed.

This utility model relates to a novel knurled steel shaft in the field of transmission hardware technology. It includes a shaft section and a joint section. The surface of the shaft section has a knurled structure, and the joint section houses a rotatable ball bearing. The joint section is composed of a right assembly block and a left assembly block, which are separate and axially symmetrical. The lower center of the right and left assembly blocks, when joined together, forms an assembly hole to accommodate the ball bearing. One end of each right and left assembly block is fixedly connected to the shaft section. A fixing element is provided at the end of each right and left assembly block away from the shaft section, and the right and left assembly blocks are fixedly connected by this fixing element. The ball bearing can be assembled into the assembly hole without the need for external pressure. This structure is simple to assemble, requires no external force, minimizes damage to the ball bearing, and is structurally stable.

This method suppresses the reduction in strength of the cooling device when welding together different types of metal components. [Solution] A cooling device is formed by joining a cover 20 made of metal and a heat dissipation part 10 made of a different type of metal to the cover 20 when they are superimposed on each other and a laser beam 152 is irradiated onto the cover 20. The heat dissipation part 10 has a groove 14 recessed on the surface that contacts the cover 20 when it is superimposed on it, so as to be separated from the cover. The part of the cover 20 opposite to the groove 14 melts and enters the groove 14, melting and joining with the part of the heat dissipation part 10 surrounding the groove 14 to form a molten part 50. In the molten part 50, a single-type metal molten part 51 and a dissimilar metal molten part 52 are formed. The single-type metal molten part 51 is the part where the base material of the cover 20 is melted. The dissimilar metal molten part 52 is the part where the base material of the cover 20 and the base material of the heat dissipation part 10 are melted.

This project aims to evaluate the torsion caused by springback in press-formed metal sheet products and to manufacture press-formed products with suppressed torsion. [Solution] The method for evaluating the torsion of a press-formed product according to the present invention evaluates the torsion of a press-formed product 10 due to springback, and involves setting multiple vertical cross-sections at intervals of 1 mm or more along the longitudinal direction of the press-formed product 10 before springback (S1), designating one of the set cross-sections as the evaluation cross-section and the other cross-sections as the action cross-sections, obtaining the stress and stress application position of each action cross-section, calculating the moment in the twisting direction acting from each action cross-section on the evaluation cross-section (S3), summing the moments calculated for each action cross-section to calculate the torsional moment evaluation index at the evaluation cross-section (S5), and determining the torsional moment evaluation index using all or part of the multiple cross-sections as the evaluation cross-section to evaluate the torsion of the press-formed product due to springback (S7).

The invention discloses an anti-seepage and anti-condensation composite color steel roof of a large factory building and a construction method thereof. Purlin supports are vertically welded with steel roof truss girders, and purlins are fixedly mounted on the purlin supports in the direction perpendicular to the drainage direction of a steel structure roof; then layered construction of a roof system is carried out, a bottom layer profiled steel sheet is laid in the direction from a cornice to a ridge, and 360-degree seaming and edge locking are adopted between plate panels; a vapor-proof layer is laid on the upper portion of the bottom-layer profiled steel sheet, and vapor-proof layers are laid at the joints of the ridge and the cornice in a double-layer mode; a heat preservation layer is laid on the vapor barrier layer in a layered and staggered mode, and the lap joint position is fixed through a fixing piece; the waterproof breathable layer is bonded with the heat preservation layer through an adhesive tape, and an additional layer is additionally arranged at a node; the top layer profiled metal plate is laid on the upper portion of the waterproof breathable layer and fixedly connected with the fixing support, and the top layer profiled metal plate achieves 360-degree seaming and edge locking through mechanical seaming; by integrating the functions of heat preservation, water prevention, corrosion prevention and condensation prevention, the service life of the building roof system is remarkably prolonged, and the safety performance of the building roof system is remarkably improved.

The utility model discloses a thin metal plate positioning device, which relates to the technical field of metal plate processing and comprises a bottom plate, a vertical plate is arranged on one side of the bottom plate, a connecting strip is fixedly arranged at one end of the bottom plate, one end of the connecting strip is fixedly connected with the vertical plate, a motor is arranged on one side of the vertical plate, and the motor is connected with the vertical plate. A protective plate is fixedly arranged at one end of the vertical plate, the protective plate is fixedly connected with a motor, supporting plates are fixedly arranged on the two sides of the end, close to the inner side, of the vertical plate, a rotating shaft is rotationally arranged between the two supporting plates, the output end of the motor penetrates through one supporting plate and is fixedly connected with the rotating shaft, and the outer surface of the rotating shaft is sleeved with two gears; the thin metal plate positioning device is simple in structure, convenient to adjust, capable of effectively positioning and fixing thin metal parts, good in positioning capacity, capable of positioning and clamping metal plates with different widths and high in universality.

The utility model discloses a kind of testing device of through type metal detection door, comprising: test body fixed rod, telescopic cylindrical rod and rotating clamping point;Test body fixed rod is provided with slot;Slot is placed with test body;Test body fixed rod is fixedly connected with rotating clamping point;Telescopic cylindrical rod is fixedly connected with rotating clamping point;Test body fixed rod is rotatably connected with telescopic cylindrical rod by rotating clamping point.In the utility model, it solves the problem that traditional test body is difficult to pull out and insert when pulling out and inserting tool steel, realizes that test body is from 0.7 meters high or 1.5 meters height, and from different angles through metal detection door, improve test height accuracy and the test efficiency of metal detection door.

The present application relates to a kind of multilayer circuit board manufacturing method of embedding special-shaped metal base, provide integrally formed special-shaped metal base, it includes main part and expansion part, expansion part is protruding on at least two opposite sides, increase the overall volume of metal base and the contact area with multilayer board under the premise of not invading device layout space;Subsequently, milling groove processing is carried out to multilayer core plate and prepreg, first groove body matching the outer contour of expansion part is milled on the bottom layer core plate, and second groove body matching the outer contour of main part is milled on each layer above it;After special-shaped metal base is embedded in corresponding groove body, hot pressing is carried out, so that the upper surface of main part is flush with the upper surface of top layer core plate, prepreg flows and solidifies as PP flow glue layer by heat, PP flow glue layer fills the gap between interface continuously, significantly improve the interface bonding strength;Finally, electroplating treatment is carried out, and electroplating layer is formed on the upper surface of main part and top layer core plate, with electrical conduction and secondary reinforcement function.

The invention relates to the technical field of metal material forming, and particularly discloses a shape collaborative efficient manufacturing method for a large metal ring cylinder part. The method comprises the following steps: carrying out roll bending forming on an annealed metal plate; laser welding is adopted to form a ring blank; the diameter of the ring piece is widened through ring rolling forming, and the weld structure is strengthened; and finally, carrying out stress relief annealing to improve the dimensional stability. According to the method, grain refinement and structure transformation of a weld zone can be induced through plastic strain, and shape and property collaborative integrated control is achieved. Compared with a traditional multi-pass tailor-welding and rounding scheme, the method is short in technological process and high in forming precision, the welding seam strength is close to that of base metal, and the method is suitable for manufacturing large-size high-strength metal annular structural parts and particularly suitable for the fields of spaceflight storage boxes, deep sea cabin sections, large pressure-bearing containers and the like.