320 results about "Type metal" patented technology

The invention relates to the technical field of oil and gas reservoir exploitation equipment, in particular to a compression type metal packer which is used for solving the problem that a high-temperature and high-pressure deep well rubber cylinder serving as a sealing element cannot meet operation requirements, and the compression type metal packer comprises a first connector and a second connector which are connected to the upper end and the lower end of a central pipe; a sealing mechanism is arranged in the middle of the central pipe and comprises a metal sealing cylinder, a sealing ring and a sealing ring; the upper sealing cone sleeves the central pipe and is arranged at the upper part of the metal sealing cylinder; the lower sealing cone sleeves the central pipe and is arranged at the lower part of the metal sealing cylinder; the metal sealing cylinder is made of nickel-titanium-based superelastic alloy; the metal sealing cylinder is made of nickel-titanium-based superelastic alloy, annealing treatment is conducted at the temperature of 650 DEG C, thermal circulation and mechanical training are conducted at the temperature above the phase change temperature, the stable mechanical performance is obtained, the ideal deformation rate can be obtained under the small load effect, the setting force and the unsetting force are reduced, and the metal sealing cylinder is suitable for high-temperature and high-pressure deep well operation.

The utility model relates to the technical field of laser cutting, and discloses a thin metal plate laser cutting machine which comprises a laser cutting head, an installation support is installed on the outer wall of the laser cutting head, a small motor is installed at the end, away from the laser cutting head, of the installation support, and a power gear is installed at the output end of the small motor. According to the thin metal plate laser cutting machine, the position, located on the outer side of the laser cutting head, of the surface of a metal plate is polished through rotation of the polishing piece, residual molten metal on the surface of the metal plate is polished through polishing of the polishing piece, and therefore the smooth effect of the surface of the metal plate at the cutting position is improved, and the cutting quality is improved; and through cooperation of an inner adsorption magnet and an outer adsorption magnet, chippings generated by polishing are adsorbed, and the situation that the metal chippings generated by polishing are left on the surface of a plate, additional cleaning work needs to be conducted, and the subsequent laser cutting quality can be affected when the metal chippings are left on a cutting route is prevented.

The invention discloses a thread machining device for metal part machining, and relates to the technical field of metal machining equipment.The lower end of a lifting sliding plate is provided with an angle adjusting assembly, the upper end of the lifting sliding plate is fixedly provided with a rotating assembly, the rotating assembly is used for driving the angle adjusting assembly to rotate, and the angle adjusting assembly is provided with a thread machining assembly; a tapping cutter is detachably installed on the thread machining assembly. Transverse clamping assemblies used for transversely clamping a metal piece are installed at the two side ends of the main body base in the transverse direction. Longitudinal clamping assemblies used for longitudinally clamping the metal piece are installed on the transverse clamping assemblies. A clamping through hole is formed in the center of the main body base, and a three-jaw clamping seat used for clamping the tubular metal part is mounted in the clamping through hole; through the synergistic effect of the rotating assembly and the angle adjusting assembly, the tool can be positioned at will within the inclination range of 0-90 degrees, and multi-angle machining of a complex curved surface is achieved in cooperation with position adjustment of the arc-shaped guide rail.

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.

A method for friction stir forming a metal matrix composite (MMC) structure (76). The method includes the step of providing a substrate (12) comprising a metallic material and securing a preformed MMC layer (14, 16) comprising an MMC material in a position overlying at least a portion of the substrate (12). The method further includes the step of friction stirring the preformed MMC layer (14, 16) with a friction stirring tool (50) which includes a rotating probe (56), including locating the probe (56) at a stirring depth at which the probe (56) extends through the preformed MMC layer (14, 16) into a portion of the substrate (12) and passing the tool (50) through the preformed MMC layer (14) at the stirring depth to friction stir the preformed MMC layer (14, 16) and integrate the preformed MMC layer (14, 16) with the substrate (12).

The present disclosure relates to a fabrication and evaluation process for testing new metallic alloy chemistries and compositions for laser powder bed fusion (L-PBF). The new methodology is efficient and effective for new compositions with a minimal investment of generating large quantities of powder feedstock for required in conventional AM processing. The method allows for subsurface melting of the new alloy composition by varying the depth of penetration by a control of the input power level, power deposition rate, and rastering scan strategy. Post-mortem analysis of the subsurface microstructure permits an analysis of the durability and suitability of the new metallic alloy for this manufacturing mode. The method utilizes available infrastructure, technology, and characterization techniques.

According to the special-shaped metal product inner hole grinding device and method, the distance between double grinding heads is adjusted through a two-way lead screw, lifting feeding and differential rotation are combined, and efficient precision machining of a special-shaped inner hole is achieved. The device comprises an adjustable grinding head mechanism, a servo drive rotating unit and a sectional feeding system, and is suitable for batch production of complex inner holes.

The present invention discloses a welding device for welding a metal basket. The metal basket includes an L-shaped metal bar, a metal hoop, and a bottom ring. The metal bar includes a first bend and a second bend. The welding device comprises: a horizontal moving mechanism; a fixing device disposed on the horizontal moving mechanism, the fixing device being used to fix the metal bar and the metal hoop and capable of twisting the second bend; a first welding mechanism disposed at one end of the horizontal moving mechanism in the conveying direction and used to weld the first bend to the bottom ring; and a second welding mechanism disposed on both sides of the horizontal moving mechanism in the conveying direction and used to weld the second bend to the metal hoop. The welding device proposed by the present invention can automatically weld metal baskets, reducing labor costs.

The invention discloses a self-correcting forging press for a metal plate, which comprises a forging press body, a clamping mechanism and a pushing mechanism, the clamping mechanism is arranged on a pedestal piece, and the clamping mechanism is in butt joint with a first conveying belt for automatically picking and clamping a metal aluminum forging plate blank during feeding; the clamping mechanism is arranged on the first conveying belt and used for automatically positioning and discharging metal aluminum forging plate blanks before being in butt joint with the forging press body for forging and pressing, the clamping mechanism is used for automatically discharging formed metal aluminum forging plates after being in butt joint with the second conveying belt for forging and pressing, and the pushing mechanism is arranged on the first conveying belt and used for automatically and accurately filling the metal aluminum forging plate blanks into the clamping mechanism. According to the self-deviation-rectifying forging press for the metal plate, automatic picking, clamping, positioning and discharging of a metal aluminum forging plate blank are achieved, automatic discharging of a formed metal aluminum forging plate is achieved, the automation performance is guaranteed, in addition, automatic deviation rectifying treatment of the metal aluminum forging plate blank in the conveying process is achieved, and the filling accuracy in the picking process is guaranteed.

The invention discloses a casting defect diagnosis and closed-loop control system and method based on causal anti-fact and multi-agent arbitration. The system collects multi-source data such as temperature, flow, cooling, vision and the like, learns a causal structure, establishes an agent model and solves an adjustment scheme which enables the defect probability to be remarkably reduced in a security domain; performing evidence verification on the suggestions through verifiable generation and a knowledge graph, fusing vision, process, metallurgy and simulation agent arbitration, executing in an edge-cloud double ring, and triggering security rollback abnormally; and when the uncertainty is increased, active learning and incremental updating are implemented. According to the scheme, the defects of shrinkage cavities, air holes and the like can be remarkably reduced, the first-pass yield is improved, and the method is suitable for aluminum alloy sand molds, metal molds and low-pressure casting production lines.

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 discloses a safety type metal compensator, which relates to the technical field of metal compensators, and comprises a metal compensator main body and connecting flanges arranged at two ends of the metal compensator main body, and a damper spring is arranged on the outer side surface of the metal compensator main body. A first supporting piece and a second supporting piece are installed on the outer side surface of the metal compensator body, the first supporting piece comprises two first clamping blocks, the second supporting piece comprises two second clamping blocks, and the outer side surfaces of the first clamping blocks and the outer side surfaces of the second clamping blocks are fixedly connected with the outer side surface of a damping spring. Through cooperation of the first supporting piece and the second supporting piece, deformation of the damping spring is relieved, the normal state of the pipeline or the metal compensator body is kept, excessive deformation or failure is prevented, and therefore the stability and reliability of the metal compensator body are kept, pipeline leakage or damage caused by failure of the metal compensator body is prevented, and the service life of the pipeline is prolonged. And the safety of the system is improved.

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 utility model discloses a heating table for a special-shaped metal workpiece, which is provided with high-frequency heating equipment which is electrically connected with a heating coil, and is characterized in that the heating table comprises a supporting table which is positioned in front of the high-frequency heating equipment and below the heating coil; the upper portion of the supporting table is fixedly connected with a mounting plate through a fixing piece, the upper portion of the mounting plate is provided with a lifting mechanism, the lifting mechanism is connected with a connecting column, the connecting column is connected with a supporting column through a connecting piece, and the supporting column is located under the heating coil. According to the utility model, the clamp is used for clamping the special-shaped metal piece, the metal piece is arranged in the heating coil, the metal piece is contacted with the supporting column below the coil, and the supporting column generates acting force on the metal piece to support the metal piece, so that the force which is required by an arm is reduced, the physical power is saved, and the working intensity is reduced.

The utility model discloses a self-positioning and self-releasing type metal stamping die which comprises a machining table, four supporting legs are fixedly connected to the bottom of the machining table, a stamping table is fixedly connected to the top of the machining table, a stamping groove is formed in the top of the stamping table, and a mounting groove is formed in the bottom of the stamping table. The bottom of the stamping groove is connected with a positioning plate through a material ejecting structure, the positioning plate is slidably connected into the mounting groove, the top of the positioning plate penetrates through the side wall of the stamping table and is slidably connected with the stamping table, the top of the stamping table is fixedly connected with two limiting plates, and the two limiting plates are located on the two sides of the stamping groove correspondingly. The top of the punching table is fixedly connected with a pushing air cylinder. Through mutual cooperation of the stamping table, the material pushing plate, the blanking plate, the vertical rod and other components, workpieces can be automatically blanked after being stamped, so that the working intensity of workers is reduced, the safety during machining is improved, and operation is simple, convenient and fast.

The invention relates to the technical field of large metal part machining, in particular to a rotating supporting table for large metal part machining, which comprises a connecting table, a rotating rod and a supporting block, a rotating box is fixedly connected below the connecting table, a conveying groove is movably connected to the outer side of the connecting table, a conveying belt is movably connected above the connecting table, and the supporting block is movably connected to the rotating box. By arranging the rotating box, the rotating bolt and other assemblies, the rotating bolt can drive the movable rolling wheel to move upwards, support the connecting table and adjust balance, the phenomenon that the movable shaft deviates due to imbalance of objects is prevented, meanwhile, the rotating bolt can drive the movable rolling wheel to move upwards, the connecting table is supported, the balance is adjusted, and meanwhile, the rotating box is convenient to use. The conveying groove, the conveying belt and other structures can accurately convey large objects to the connecting table, and the installation process is optimized; the problem that conveying parts of a traditional device are difficult to move is solved, interference is avoided, and flexible operation of the device is guaranteed.

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 belongs to the technical field of high-temperature protective coatings, and particularly relates to an interface stable type metal bonding layer for a thermal barrier coating based on phase structure regulation and control and a preparation method of the interface stable type metal bonding layer. The main components of the metal bonding layer are Ni, Cr and Al, the aluminum content is 8-12 wt.%, the chromium content is 5-15 wt.%, the phase composition is gamma'single phase or gamma ' / gamma double phase, and no alpha-Cr or beta-NiAl phase is separated out. Through precise regulation and control of components and phase composition, preferential oxidation of a heterogeneous interface is inhibited, and the chemical potential difference between a coating and a substrate is reduced. In long-term high-temperature service, a single protective Al2O3 film is generated on the surface, no harmful brittle spinel oxide is generated, a strong bonding mixing area is formed between an oxide layer and a ceramic layer interface, and no obvious element mutual diffusion exists between the coating and a matrix. The method is simple in process, suitable for various high-temperature alloys and capable of being widely applied to high-temperature corrosion protection of hot-end components such as aero-engines and gas turbines, and the service life of the thermal barrier coating is remarkably prolonged.

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.

The utility model relates to the technical field of building materials, in particular to a novel metal tile convenient to install, which comprises a first metal tile and a second metal tile, the first metal tile is provided with a transverse groove, the lower surface of the second metal tile is fixedly connected with a transverse block matched with the transverse groove, and the transverse block is inserted into the transverse groove. And fixing grooves are symmetrically formed in one side of the first metal tile and one side of the second metal tile. Compared with the prior art, the fixing grooves in the first metal tiles are connected with the fixing blocks in an inserted mode, then the first metal tiles are connected through the fixing rods and the inserting rods, then the transverse blocks on the second metal tiles are connected with the transverse grooves in an inserted mode, and then the ends, away from the first metal tiles, of the second metal tiles are connected with the roof; the problem that metal tiles are inconvenient to install is solved, the first metal tile and the second metal tile do not need to be connected in a welding mode, metal can be detached and replaced when the metal tiles are damaged, use is very convenient, and installation is very convenient.

The present invention relates to a composite metal material and a high thermal conductivity low-temperature solder paste containing the same. The composite metal material is a Cu core / Ag intermediate layer / Sn shell type metal powder (Cu@Ag@Sn) or a Cu core / Ni intermediate layer / Sn shell type metal powder (Cu@Ni@Sn), with a particle size ranging from 20 μm to 60 μm. After being mixed with Sn-Bi series alloy powder and soldering flux paste, the composite metal material forms a high thermal conductivity low-temperature solder paste, which can be used for welding various substrates, is suitable for low-temperature welding, and the welding temperature is below 150°C. The process of the composite metal material of the present invention is simple, the cost is low, and the practicability is strong, solving the problems such as poor heat dissipation after the power device chip is pasted due to the low thermal conductivity of the current solder paste on the market.