84 results about "Light metal" patented technology

The invention discloses a method for enriching light metal ions in a pore channel based on carbon nanofiber / carbon fiber nano confinement, and belongs to the technical field of sample pretreatment, and the method comprises the following steps: S1, preparing a carbon nanofiber / carbon fiber confinement material; and S2, putting the carbon nanofiber / carbon fiber confinement material obtained in S1 into a light metal ion solution, and stirring. According to the method for enriching the light metal ions in the pore channel based on the carbon nanofiber / carbon fiber nano confinement, the carbon nanofiber / carbon fiber is used as a confinement fluid carrier, ultrapure water, methanol or n-hexane is used as an extracting agent, a chelating agent does not need to be introduced, the method is green and environmentally friendly, the mass transfer rate is increased, and the method is suitable for large-scale industrial production. Therefore, high enrichment of light metal ions in water is realized.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

The invention discloses an invisible light curtain hollowed-out light-transmitting metal wall surface mounting structure and a mounting method thereof.The invisible light curtain hollowed-out light-transmitting metal wall surface mounting structure comprises a plurality of box type invisible light curtain hollowed-out metal modules, a plurality of vertical rectangular steel frames are mounted on the surface of a wall body, and a plurality of rebound type bearing supports are mounted on each vertical rectangular steel frame; transverse rail square steel is installed on the rebound type bearing support, a slidable inserting and hanging base plate is installed on the back of each box type hidden lamp curtain hollowed-out metal module, and the slidable inserting and hanging base plates are in sliding connection with the two pieces of transverse rail square steel which are adjacent up and down. The vertical rectangular steel frame, the rebounding type bearing supports and the transverse rail square steel are assembled to form an overall base layer frame, the bearing supports are elastically adjusted to designated positions through the multiple sets of equidistant rebounding type bearing supports and internal spring structures of the rebounding type bearing supports and then anchored, so that the transverse rail square steel is rapidly clamped, inserted and installed in a limited mode, the space between cavities is adjustable, and the service life of the transverse rail square steel is prolonged. The base layer is high in surface flatness and stable in structure, and electromechanical pipelines are convenient to arrange.

The application relates to a method for targeted growth of a high-temperature-resistant, low-thermal-conductivity, large-thickness and super-high-reflectivity laser protection coating on a light metal surface, and relates to the technical field of coating protection. Different ion source components are added in a solution, and electric parameters are regulated, so that a high-temperature-resistant, low-thermal-conductivity, large-thickness and super-high-reflectivity coating of a non-base oxide phase is generated in situ on the surface of a metal base through a solution ion directional reaction. The high-temperature-resistant ceramic phase has a high service temperature, the low thermal conductivity reduces the transmission of laser energy to the base, and the super-high reflectivity is helpful for consumption of laser energy, so that the laser protection capability of the coating is greatly improved. The thickness of the coating can reach 500 micrometers, the bonding strength is greater than or equal to 15 MPa, the thermal conductivity is as low as 0.35 W / (m*K), the reflectivity is as high as 92%, and there is no obvious damage under the irradiation of a laser with a power of 500 W for 60 seconds and the irradiation of a laser with a power of 800 W for 28 seconds, so that a new method is provided for laser protection.

The invention belongs to the field of automobiles, and particularly relates to a plastic-metal composite automobile tail door assembly and an automobile. The plastic-metal composite automobile tail door assembly comprises a tail door inner plate and a tail door outer plate; the tail door inner plate is made of light metal or light alloy; the tail door outer plate is made of plastic with a low linear expansion coefficient; the tail door inner plate and the tail door outer plate are connected through connecting glue in a gluing mode to form a cavity structure. Compared with the prior art, the problems that in the prior art, when an automobile tail door is made of a light alloy material, stamping is difficult, the cost is high, when the automobile tail door is made of a plastic material, the performance is poor, a large number of reinforcing structures and reinforcing pieces need to be arranged, and the lightweight effect is weakened are solved. According to the tail door assembly, the cavity structure is formed, light weight is guaranteed, meanwhile, reinforcement can be achieved through simple thickening, the mechanical performance of the tail door assembly can be improved through the formed cavity structure, and high-low-temperature deformation of products is reduced.

The present application belongs to the field of light metal plastic forming, and particularly relates to a device and method for preparing fine-grained magnesium alloy rod by asymmetric multi-directional shear extrusion. The wedge block combination in the present application can combine multi-directional shear extrusion deformation and differential speed torsional deformation, effectively weaken the magnesium alloy basal plane texture, and improve the mechanical properties of the magnesium alloy. While the magnesium alloy material is subjected to torsional extrusion in the torsional extrusion deformation zone, the sectional area of the channel gradually decreases, and the angle of the channel deflection is different, so that the frictional force of the magnesium alloy material on the surface of the convex and concave dies at the contact position is different, and the degree of torsional deformation is also different, so that the material realizes differential speed torsional deformation, and the grain refinement effect of the magnesium alloy rod is more remarkable. When the magnesium alloy material passes through the large and small concave dies, the deformation degrees of the magnesium alloy material are different due to the particularity of the structure, so that the grain refinement is effectively realized. At the same time, the flowability of the magnesium alloy material is also different, causing differential speed flow to deflect the c-axis, thereby weakening the texture.

The utility model discloses a lightweight screw machine motor structure. The motor structure comprises a machine head, a motor cylinder, a stator assembly, a rotor assembly and an air guide assembly. The motor cylinder is made of a light metal material, sleeves the outer side of the stator assembly and is fixedly connected with the machine head; the rotor assembly is rotatably arranged in the stator assembly, and a rotating structure for driving gas to flow is arranged on the rotor assembly; the air guide structure is arranged at the end, away from the machine head, of the motor barrel and used for guiding external air to flow in in the axial direction of the motor barrel. A plurality of heat dissipation channels extending in the axial direction are formed in the motor cylinder, an air flowing path matched with the rotating structure is formed, and air is driven by the rotor assembly to flow along the heat dissipation channels and is exhausted through the end, away from the air guide structure, of the motor cylinder. Through the arrangement, the heat dissipation efficiency of the motor is effectively improved, the overall quality is reduced, and the problems that a traditional screw motor is low in heat dissipation efficiency and heavy in structure are solved.

An embodiment of the present disclosure is a main plate which is attached to a robot arm and is capable of attaching and detaching a tool plate for holding a tool, the main plate including: a main plate body including a main body portion attached to the robot arm and having an attachment surface, and an insertion portion protruding from a surface opposite to the attachment surface of the main body portion and inserted into the tool plate; a piston member capable of reciprocating in a hole formed in the main plate body; and a sliding member disposed between the inner peripheral surface of the hole portion and the piston member, in which the main body portion and the insertion portion are integrally formed from a light metal or a resin, and a groove portion in which the sliding member is disposed is formed in the piston member.

The invention discloses a high-entropy alloy reinforced light metal material preparation device and relates to the technical field of metal material engineering.The high-entropy alloy reinforced light metal material preparation device comprises a plurality of supporting legs, a smelting furnace is fixedly connected to the outer walls of the tops of the supporting legs, a feeding port is formed in the inner wall of the smelting furnace, and an adjusting mechanism is arranged on the inner wall of the smelting furnace; through a graduated scale and a baffle plate, when a threaded block moves, a mounting frame is driven to move, then when the mounting frame moves, a round rod is extruded, so that the round rod moves, meanwhile, the round rod slides in the mounting frame, then when the round rod moves, a fixed plate is driven to move, and then the fixed plate drives a rotating shaft to rotate; when the rotating shaft rotates, the baffle is driven to rotate, the flexibility of the equipment is improved, the throwing flow of the high-entropy alloy particles can be flexibly adjusted according to the demand quantity of the high-entropy alloy particles, the situation that the throwing flow of the high-entropy alloy particles is too large, and consequently the high-entropy alloy particles are excessively thrown is avoided, and meanwhile the throwing quantity of the high-entropy alloy particles can be observed in real time.

Bearing arrangement for a shaft (12) of a pump drive, comprising a housing with a housing part (14) made of light metal and penetrated by the shaft (12), the bearing arrangement comprising a sleeve (18) made of steel which is held on the housing part (14) by a positive locking anti-rotation device (32, 36) and comprising a rolling bearing for the shaft (12) and a freewheel (28; 28') arranged axially offset to the rolling bearing for blocking rotation of the shaft (12) in one direction of rotation, wherein the freewheel (28) has clamping pins (42) which roll on the circumferential surface of the shaft (12), characterized in that - the sleeve (18) is a stepped sleeve, with a part (20) with an increased diameter adjacent to the housing part (14) made of light metal for receiving the rolling bearing and a part (26) with a reduced diameter adjoining it via a step (24) for receiving the freewheel (28; 28'), and - that the rolling bearing is a deep groove ball bearing (22) with an inner ring (50) held on the shaft (12) by press fit and an outer ring (48) held in the sleeve (18), which is axially supported on the step (24) of the sleeve (18).

The application discloses a kind of double light metal doped modified carbon nitride photocatalyst and preparation method thereof, comprising the following steps: (1) the pretreatment of precursor, according to certain mass ratio, two metal salts are mixed with carbon and nitrogen-containing organic matter and are uniformly ground;(2) preparation is carried out using high-temperature thermal polycondensation method, and constant temperature calcination is carried out under certain conditions;(3) the sample prepared by calcining is washed, centrifuged and dried to obtain double metal co-doped polymer carbon nitride.The method is simple, low in cost, uniform in morphology and high in catalytic activity.The application uses cheap main group light metal to dope and modify carbon nitride (Na-Mg / CN), and the solar conversion quantum yield of the composite material is high, the selectivity of photocatalytic preparation of hydrogen peroxide (H2O2) is good, the efficiency is high, and it can be applied to the field of artificial photosynthesis to prepare important chemicals.

The invention relates to a shut-off valve housing assembly for a shut-off valve having a closing element which is mounted in a housing so as to be rotatable about a vertically extending axis, the invention relates to a shut-off valve housing assembly comprising a housing made of plastic or light metal, a vertically extending shaft, a through-flow opening arranged in the housing and receiving a closing element, and a flange arranged on the end side, at least one reinforcing element being arranged in the housing and being connected to the flange by means of a force receiving means in such a way that the force receiving means are arranged in the housing. The reinforcing element is arranged such that an internal pressure generated on the shaft is received by the force receiving means through the reinforcing element.

The application discloses an aluminum-tin steel composite plate and a preparation method thereof, and belongs to the technical field of alloy materials. The preparation method of the aluminum-tin steel composite plate is as follows: a base steel plate and an aluminum-tin alloy plate are stacked and completely aligned according to a surface to be compounded, wherein the surface of the aluminum-tin alloy plate away from the base steel plate contains an aluminum-containing light metal protective layer, then explosives are uniformly laid on the surface of the aluminum-containing light metal protective layer of the aluminum-tin alloy plate away from the base steel plate, and explosion compounding is carried out by detonating the explosives to obtain an explosion composite plate containing a protective layer; and the explosion composite plate containing the protective layer is shaped and the protective layer is removed, and the aluminum-tin steel composite plate is obtained. The aluminum-tin steel composite plate prepared by the method has high strength and good toughness, and has excellent friction-reducing property, heat conductivity and corrosion resistance; the preparation method is simple, the cost is low, and the method is suitable for industrial production.

The application discloses a processing method of a bearing hole of a light metal intake casing, which comprises the following steps: setting an annular groove to accommodate a wear-resistant coating, so that a mechanical anchoring structure is formed between the wear-resistant coating and the inner wall base body of the bottom hole; when a tool simultaneously cuts the inner wall base body of the bottom hole and the coating blank, stress is avoided from being concentrated at the bonding surface of the wear-resistant coating and the inner wall base body of the bottom hole through the annular groove, and the risk of the wear-resistant coating being bulged or even falling off from the bonding surface is significantly reduced; in addition, the annular groove effectively anchors the wear-resistant coating during the processing stage, and the falling-off hidden danger of the wear-resistant coating during the service process is solved from the root; during the cutting processing, the size precision of the finished product bearing hole is accurately controlled, the integrity of the wear-resistant coating is not damaged by the annular groove, and subsequent rework is not needed, so that the qualified rate of the bearing hole is high, and the processing cycle is short; the bearing is supported by the wear-resistant coating, so that reliable support of the bearing is realized while the lightweight design of the intake casing is met, the practicality is high, and the method is suitable for being widely promoted and applied.

The invention relates to the technical field of metal coating, in particular to a metal surface coating process and a production line. The coating process comprises the following steps that the metal surface of a workpiece is sequentially subjected to polishing, degreasing, corrosion and coating treatment; a degreasing fluid used in the degreasing treatment comprises 5 wt%-10 wt% of sodium carbonate, 1 wt%-3 wt% of sodium silicate, 2 wt%-4 wt% of sodium gluconate, 0.5 wt%-2 wt% of a functional auxiliary agent, 1 wt%-2 wt% of a surfactant and the balance of water. An etching solution used in the etching treatment comprises 8 wt%-12 wt% of phosphoric acid, 3 wt%-5 wt% of citric acid, 0.05 wt%-0.3 wt% of ammonium bifluoride, 2 wt%-5 wt% of a functional auxiliary agent, 0.1 wt%-0.3 wt% of alkynol and the balance of water; the functional auxiliary agent comprises a first group which can be ionized under an alkaline condition, a second group which can be protonized under an acidic condition, and a third group with metal coordination capability. The formula of the degreasing liquid and the corrosion liquid is adjusted, so that the method is more suitable for metal surface treatment of light metal such as aluminum and magnesium alloy.

The application discloses a preparation method of a force-thermal superstructure with light load bearing and laser protection, adopts a double-point lattice structure design of light metal skeleton lattice and ablation type resin matrix composite lattice nested with each other, utilizes a 3D printing forming process, combines new technical advantages of selective forming of various materials, and realizes integrated high-precision forming of the force-thermal superstructure with light load bearing and laser protection by means of finite element numerical simulation and calculation optimization. The superstructure prepared by the method improves the specific strength and specific stiffness of the structure within the design range, and simultaneously has the laser protection function, so that the method has important significance for overall weight reduction and protection.

The invention discloses a preparation method and application of a rare earth magnesium alloy surface micro-arc oxidation film layer manufactured through electric arc additive manufacturing, and relates to the technical field of additive manufacturing light metal surface treatment. The preparation method comprises the following steps: manufacturing a rare earth magnesium alloy through electric arc additive manufacturing; carrying out homogenizing heat treatment on the rare earth magnesium alloy subjected to electric arc additive manufacturing; performing earlier-stage treatment; preparing an inner-layer alkaline electrolyte and an outer-layer alkaline electrolyte; and step-type voltage micro-arc oxidation treatment: taking stainless steel as a cathode, taking the magnesium alloy as an anode, sequentially putting the stainless steel and the magnesium alloy into the inner-layer alkaline electrolyte and the outer-layer alkaline electrolyte for micro-arc oxidation, cleaning and drying to obtain a micro-arc oxidation film layer on the surface of the magnesium alloy. According to the preparation method, the problems that a traditional micro-arc oxidation coating is loose, porous, prone to corrosion and short in service life are solved, the corrosion resistance of the magnesium alloy is effectively improved, the magnesium alloy is prevented from volatilizing under the high-temperature condition, the working requirement of a satellite support in the space environment is met, and the application range of the magnesium alloy is widened.

The utility model relates to the technical field of light metal part packaging, in particular to a universal light metal part packaging device which comprises a table body. The conveying mechanism is mounted in the table body; the number of the clamping mechanisms is two, and the two clamping mechanisms are matched to clamp the light metal part; the number of the driving mechanisms is two, and the two driving mechanisms are arranged on the two sides of the surface of the table body correspondingly; the number of the film covering assemblies is two, and the two film covering assemblies are connected with one driving mechanism. By using the device, the number of winding turns is controlled by the first motor, the operation of the device is automatically controlled, the number of winding turns on the surface of the light metal part is conveniently controlled, and the winding efficiency is effectively improved.

The present application belongs to the technical field of light metal plastic forming, and particularly relates to a device and method for preparing fine-grain weak-texture high-performance magnesium alloy plate strip by inclined rolling. Through the device and the processing method, shear deformation of the magnesium alloy blank occurs in the processing process, thereby realizing grain refinement, improving the room temperature mechanical properties of the magnesium alloy, and expanding the application range of the magnesium alloy. The present application deflects the C-axis of the magnesium alloy through the inclined rolling channel, effectively weakens the basal plane texture of the magnesium alloy, refines the grains, and improves the mechanical properties of the magnesium alloy; the lifting speed of the gear lifting device and the rotating speed of the round roller can be adjusted, and the roller is a circular cone type. In the rotary extrusion, the extrusion thickness of the plate is different, and the center position of the circular cone is constantly changed under the action of the gear lifting device, thereby playing a certain eccentric role, further enhancing the deflection degree of the magnesium alloy C-axis to the maximum radius of the circular cone roller. The weakening effect of the magnesium alloy rod grain texture is more significant.

The utility model discloses a multi-linked automatic gas protection light metal and alloy milling device, which is characterized in that upright posts are fixedly connected to four corners of the outer surface of a main machine, a milling feeding component is arranged in the main machine and comprises a main shaft, an auxiliary shaft is rotatably connected to the periphery of the main shaft, and the main shaft is provided with a plurality of vertical columns; the outer surface of the main shaft is fixedly connected with a transmission gear, and the main shaft is fixedly connected with a first positioning plate. A second positioning plate is fixedly installed on the first positioning plate through a guide rod, an installation plate is installed on the auxiliary shaft in a threaded mode, a plurality of clamps are fixedly installed on the installation plate, a magnesium ingot is clamped on each clamp, a milling cutter power motor is fixedly connected to the surface of the main machine, and through arrangement of the multiple sets of main machines and transmission connection of the chain wheel sets, cooperative work of multiple devices can be achieved; and in the milling feeding assembly, a main shaft and an auxiliary shaft are in matched transmission, and stable feeding of the clamp can be achieved in combination with a meshing structure of a transmission gear, a special-shaped gear and a fixed rack.

The application discloses a gradient ion adsorption mixing method of high-tungsten-based multi-element alloy powder and a core-shell structure powder. In view of the problems of mixing segregation (CV>15%), rare earth oxidation (>1200ppm) and interface brittleness, a three-step method is adopted: 1. surface hydroxylation: H2O230vol%+HNO3 etching makes the tungsten powder hydrophilic (contact angle≤10°); 2. pH gradient adsorption: step-by-step pH control (pH 3.0-4.0 preferentially adsorbs rare earths→pH 6.0-8.0 adsorbs light metals); 3. in-situ reduction: gradient heating in a hydrogen-argon mixed atmosphere to generate a core-shell structure. The obtained powder has a coating rate of ≥95% (SEM-EDS), an oxygen content of ≤800ppm (ASTM E1019) and a W / Al distribution CV value of ≤4.2% (GB / T 5060). The powder is suitable for high-end fields such as military or aerospace.

The present application belongs to the technical field of light metal plastic processing and mechanical property increasing, and particularly relates to a device and method for preparing fine-grained magnesium alloy pipe by multi-edge reverse roller rolling-twisting-extrusion composite. The device comprises a power device, a reciprocating extrusion device, a differential speed rotating extrusion device, a horizontal extruder, an extrusion die and a bracket. The left extrusion channel, the differential speed rotating extrusion channel and the right extrusion channel jointly form a reciprocating rotating differential speed extrusion channel. In the present application, the differential speed rotating extrusion channel makes the C-axis of the magnesium alloy deflect, effectively weakens the basal plane texture of the magnesium alloy, refines the grains and improves the mechanical properties of the magnesium alloy; the thickness of the extrusion channel has a decreasing trend; after entering the inlet, the pipe is subjected to the pressure between the gradually thinned extrusion channel walls, and at the same time, under the action of the inner and outer rotating extrusion cylinders, the pipe is subjected to the shearing force along the radial direction, and the size of the shearing force can be controlled by adjusting the friction coefficient of the outer wall of the extrusion cylinder. The grain texture weakening effect of the magnesium alloy rod is more remarkable.

The invention discloses a room-temperature rapid preparation method of light metal hydroboron, and relates to the technical field of hydrogen storage materials. The method specifically comprises the following steps that S1, metal hydride is subjected to ball milling pretreatment according to a certain ball-to-material ratio; s2, mixing the pretreated metal hydride and dimethyl sulfide borane in a flask, then adding a solvent, and carrying out ultrasonic-assisted reaction; and S3, transferring the solid product into a tubular furnace, and carrying out vacuum drying to obtain the metal borohydride. The method has the advantages of simple process, low price, one-step reaction and high safety; the yield is obviously improved, the reaction conditions are obviously reduced, the production efficiency is greatly improved, and the method has an industrialization prospect.

The invention belongs to the technical field of light metal surface treatment, and particularly relates to a preparation method of a black micro-arc oxidation film layer of an aluminum alloy sheet. The micro-arc oxidation cut-off voltage is obviously reduced by changing the components and concentration of the electrolyte, so that ablation is avoided.

The invention belongs to the technical field of preparation of light metal plates, and particularly relates to a preparation method of a heterogeneous aluminum alloy composite plate. The method comprises the following steps: preheating an Al-Zr plate sample, dipping the Al-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si composite sample; the method comprises the following steps: preheating an Al-Zr-Si composite sample, dipping the Al-Mg-Si alloy in a semi-molten state, and cooling to obtain an Al-Zr-Si-Mg composite sample; and the Al-Zr-Si-Mg composite sample is pretreated and subjected to accumulative ply rolling, and the heterogeneous aluminum alloy composite board is obtained. The prepared heterogeneous aluminum alloy composite board is of a layered gradient heterostructure, the mechanical property layout of'toughness-strength-stronger 'from outside to inside is achieved, the bearing capacity of each layer is fully played, the best matching of strength and plasticity is achieved, and the performance requirements of shells of aerospace and electronic equipment are met.

The invention relates to a vehicle front or rear end having at least two wheel house elements (14, 16) and at least one cross beam (18, 20) connecting the wheel house elements, which wheel house elements form a main body (22) made of a light metal material, wherein at least one reinforcing element (24) formed from a drawn metal (26) or sheet metal is cast into at least one wheel house element (14, 16) and / or the cross beam (18, 20). The invention also relates to a method for producing such a vehicle front or rear end.

According to the multi-material pipe beam hot air expansion and die-casting injection molding integrated forming flexible production line system, various devices needed by related processes of hot air expansion, metal die casting and non-metal injection molding are organically integrated, and production line recombination can be flexibly and rapidly completed according to the design target; and the requirements of small-batch and flexible production of advanced tubular beam components are met. By designing and optimizing the automatic feeding and discharging path of the system, efficient transferring and accurate positioning of workpieces can be achieved, and the automation level and the production efficiency of the whole production process are remarkably improved. The flexible production line system can be used for manufacturing a mixed material complex structure tubular beam comprising a high-structural-strength main body and light metal and non-metal components, the high strength and light weight index requirements of current vehicle body structural components can be met, and the manpower and material resource cost in large-scale production can be greatly reduced.

To provide an actuator which can reduce weight of a shaft body constituted of a motor shaft and an input shaft.SOLUTION: An actuator comprises: a motor having a motor shaft 12; and a speed reducer having an input shaft 16 in which rotation of the motor shaft 12 is input, wherein the input shaft 16 is a separate body from the motor shaft 12, coupled to the motor shaft 12 to be integrally rotated by a coupling member 46, and specific gravity of the motor shaft 12 is smaller than specific gravity of the input shaft 16. The input shaft 16 may be constituted of a ferrous material, and the motor shaft 12 may be constituted of a light metallic material.SELECTED DRAWING: Figure 2

The invention relates to a magnetic multilayer film and a preparation method and application thereof. The magnetic multilayer film includes: a substrate; the heavy metal layer, the ferromagnetic layer, the rare earth magnetic alloy layer, the rare earth metal layer, the light metal layer and the covering protection layer are sequentially arranged on the substrate in a stacked mode. Wherein the heavy metal layer is configured to generate spin current under the action of current and act on the ferromagnetic layer in the form of spin orbit moment; the light metal layer is configured to generate track flow under the action of current; the rare earth metal layer and the rare earth magnetic alloy layer are configured to convert the orbital flow into orbital moment and act on the rare earth magnetic alloy layer; wherein the orbital moment and the spin orbital moment have a synergistic effect, and the orbital moment and the spin orbital moment are used for reducing the critical current of magnetization overturning of the magnetic multilayer film. According to the magnetic multilayer film, orbital moment cooperative driving is achieved, the critical current of magnetization overturning of the device is remarkably reduced, and the preparation of a high-efficiency and low-power-consumption spin electronic device is facilitated.