73results about How to "Fully melted" patented technology

The invention discloses a multi-scale hybrid particle reinforced aluminum-based composite material, which is prepared from the following raw material powder in percentage by mass: 70 to 98.5 percent of AlSi10Mg atomized powder, 0.5 to 20 percent of micron-sized Al2O3 powder, 0.5 to 20 percent of nano-sized Al2O3 powder and 0.5 to 20 percent of submicron-sized SiC powder, and the sum of the mass percent of the components is 100 percent. The material is an aluminum-based composite material with high strength, high toughness and high hardness. The invention further provides an SLM preparation method of the multi-scale hybrid particle reinforced aluminum-based composite material, through particle content optimization, powder preparation process innovation and SLM process parameter optimization, the high-strength, high-toughness and high-hardness aluminum-based composite material is obtained, and additive manufacturing of the aluminum-based composite material is achieved.

The invention discloses injection molding equipment and an injection molding method thereof, and belongs to the technical field of injection molding. The injection molding equipment comprises a counter, an injection molding machine and a forming mold, one end of the counter is provided with the forming mold, the other end is provided with the injection molding machine, one end of the injection molding machine abuts against the forming mold, the other end is provided with a hopper, and a heating mechanism is arranged between the two ends; an injection molding machine comprises a first injection molding section, a driving section, a pushing section, a second injection molding section and a nozzle which are sequentially connected and communicated, the nozzle abuts against a forming mold, and a hopper is arranged on the first injection molding section; the injection molding equipment has a very good homogenizing effect on molten plastic, can remove insoluble impurities or incompletely molten raw materials contained in fluid, can play a very good filtering role, avoids blockage, prolongs the service life of the injection molding equipment, improves the production efficiency of the injection molding equipment, and protects the precision and stability of the injection molding equipment.

The invention discloses a purification method and a purification device for crystallized magnesium, and relates to the field of magnesium metal smelting. The method comprises the following steps: under the protection of an inert atmosphere, firstly carrying out pressure-applying melting treatment on a magnesium material to be smelted, and then carrying out pressure-applying filtering treatment on a product obtained after the melting treatment, so as to complete the flux-free smelting process of the magnesium material. And meanwhile, the metal magnesium liquid and most of the oxide shells are separated by utilizing the liquidity difference between the liquid metal magnesium and the solid oxide shells. Compared with a conventional smelting process without pressure application, the method has the advantages that the melting rate of the crystallized magnesium can be remarkably increased, most of oxide impurities are removed, a series of pollution problems caused by flux use are solved from the source, and low-cost, high-efficiency and high-quality smelting of the crystallized magnesium is realized.

The invention provides a machining device for metal powder tailored blank laser welding production. The machining device comprises a machining table, the machining table is connected with a welding room, the welding room is connected with a junction box, the junction box is provided with a magnetic attraction tool, the magnetic attraction tool is provided with a protective baffle, and the protective baffle is provided with a material frame; the welding room is connected with a welding head, the welding head is connected with a powder feeding pipe, the welding head is connected with a laser, the welding head is connected with a sealing ring, the sealing ring is connected with a powder storage barrel, the sealing ring is connected with a rotating disc, and the rotating disc is connected with a driving motor; the sealing ring is connected with an air pump which is connected with an air source. The powder flow is surrounded by the light beams emitted by the multiple lasers, powder can be fully melted on the molten pool and fused with the workpiece, meanwhile, the workpiece can be thoroughly welded, the workpiece is positioned and fixed through the magnetic attraction tool, the welding effect can be well improved, the feeding and discharging efficiency is improved, the production efficiency is improved, and the application cost is greatly reduced.

The invention relates to the technical field of solid waste thermochemical treatment, and provides a method for treating waste incineration fly ash through plasma melting. Fly ash is pretreated and then enters a plasma furnace to generate a solid melt, the solid melt is quenched into vitreous slag through a slag cooler, and high-temperature waste gas generated by the melting furnace enters a high-temperature waste gas pretreatment and gas treatment system to be purified into gas meeting the environmental protection standard. An active carrier of organic particles prepared from silicon resin and silicon dioxide is added into the fly ash, so that dioxin molecules and heavy metals in the fly ash are respectively and firmly wrapped by a three-dimensional network, and the harmless reduction treatment problem of dioxin and cured heavy metals is solved; meanwhile, the problems that when plasma equipment treats the waste incineration fly ash, the melting glass transition temperature is too high, and the fly ash diffuses along with tail gas in the feeding process, so that a pipeline is blocked are solved.

The invention relates to a high-entropy oxide wave-absorbing ceramic powder material as well as a preparation method and application thereof, belongs to the technical field of electromagnetic wave absorbing materials, and solves the problems of poor high-temperature resistance and oxidation resistance and low absorption efficiency on low-frequency wave bands of an existing electromagnetic wave absorbing material. The high-entropy oxide ceramic material has a perovskite structure, the molecular structure is ABO3, A comprises La and Sr, and B is at least five elements of Cr, Ni, Mn, Fe, Co, Zr, Hf and Ti. According to the invention, the high-entropy oxide is combined with the perovskite structure, the electromagnetic function of the high-entropy oxide ceramic material is accurately regulated and controlled, and effective absorption of low-frequency electromagnetic waves is realized; the material has oxidation resistance and thermal stability under a high-temperature condition, and excellent electromagnetic function strength of the material at a high temperature is maintained. According to the high-entropy oxide ceramic powder material, the range of an electromagnetic wave absorbing material is widened, the environmental adaptability is improved, and higher requirements of development of a communication technology on the electromagnetic wave absorbing material are met.

The invention discloses a narrow gap welding gun, comprising an air intake cooling block, an air intake block and a conductive nozzle. Compared with the prior art, the invention has the following beneficial effects: the air intake block is set as a flat strip plate structure, so that the lower end of the air intake block is conveniently placed in the narrow gap; the conductive nozzle is installed in the middle of the gap and the two sides of the gap are connected with two gas flow channels, so that the combustion-supporting gas can flow out through the two sides of the gap to fill the narrow gap and wrap the conductive nozzle at the same time, thereby ensuring that the conductive nozzle fully melts the welding wire.

The invention provides a method for preparing a Cu-Al2O3-EP mixed corrosion-resistant coating, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Cu powder, Al2O3 ceramic particles and epoxy resin EP powder to obtain cold spraying prefabricated powder; and the prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Cu-Al2O3-EP mixed corrosion-resistant coating is obtained. The prepared coating has excellent mechanical strength and corrosion resistance, has good thermal stability and toughness, and is suitable for various harsh application environments.

The invention discloses an electronic component welding machine for computer hardware processing, which comprises table legs, a box body is fixedly connected to the upper ends of the table legs, a control display screen is fixedly connected to the right end of the box body, a control button is fixedly connected to the right end of the box body, and the control button is arranged at the right end of the control display screen. According to the electronic element welding machine for computer hardware machining, a workpiece can be clamped during welding by arranging a clamping plate, it is ensured that an electronic element is kept at the stable position in the welding process, poor welding caused by position deviation is avoided, the welding quality is improved, and the welding efficiency is improved. By arranging the pulling plate, the pulling strip and the telescopic rod, the clamping range is more convenient to adjust, the clamping requirements of electronic elements with different sizes and shapes can be met, the operation flexibility and efficiency are improved, the pulling plate is controlled through the motor, the equipment can be automatically clamped and loosened, manual operation is further reduced, and the production efficiency is improved.

An object of the present invention is to provide a pure copper or copper alloy powder for use in additive manufacturing using a laser beam system, and which is capable of increasing the laser absorptance and simultaneously decreasing the oxygen concentration in an object. Provided is a pure copper or copper alloy powder with an oxide coating, wherein the oxide coating contains carbon, and a ratio of the oxygen concentration to the carbon concentration ((oxygen concentration) / (carbon concentration)) is 5 or less.

The invention provides a uniform roasting method for a 500KA full-graphitization electrolytic cell, and relates to the technical field of electrolytic cell roasting. The roasting method comprises the steps that grooves between cathode carbon blocks are filled and leveled up with cryolite wrapped with a plastic film, a medium is laid on the surface of a cathode boss, a mixture of graphite scraps and coke powder with the mass ratio being 1: 6 is laid on corner poles, pure coke powder is laid on an intermediate pole, and the laying thickness is 20 mm; filling calcium fluoride, cryolite, sodium carbonate and electrolyte powder into a tank; electrifying and roasting. Through the method, the conductivity of the corner pole can be improved, the current distribution is uniform, the corner pole and the cathode lining are fully roasted, the stability of the electrolytic cell is enhanced, and the service life of the electrolytic cell is prolonged.

This invention relates to a method for controlling the surface accuracy of elliptical thin-walled compartments in additive manufacturing, belonging to the field of additive manufacturing technology. Addressing the challenges of surface control in additive manufacturing and post-processing of elliptical thin-walled compartments, this invention proposes a surface accuracy control method based on an internally supported dimensional structure. This method includes steps such as additive manufacturing model design of the elliptical compartment and its internally supported dimensional structure, integrated additive design, thermal processing, machining, and removal of the internally supported dimensional structure. The method applies the control of the internally supported dimensional structure extension used in additive manufacturing to the post-processing stage, achieving full-process surface control from additive manufacturing to post-processing, saving product manufacturing time and improving the overall efficiency of additive manufacturing.

The utility model belongs to the technical field of pipe fitting welding detection, and discloses an electric melting pipe fitting welding effect detection device which comprises an electric melting pipe fitting, two temperature sensing assemblies are arranged on the outer surface of the electric melting pipe fitting, and the two temperature sensing assemblies are symmetrically arranged at a connector of the electric melting pipe fitting respectively. The temperature sensing assembly is used for sensing the temperature of the outer surface of the melting area and comprises a fixing adhesive tape and a color changing block arranged on the fixing adhesive tape, the fixing adhesive tape is used for being bonded and fixed to the outer surface of the melting area of the electric melting pipe fitting, and the color changing block is used for sensing the temperature of the outer surface of the melting area so as to change the color of the color changing block and is white under the normal temperature condition. The color changing block changes color under a high-temperature condition, and the color is kept unchanged after color changing; according to the utility model, the temperature sensing assembly is arranged to sense the temperature of the outer surface of the melting area, and the sensed temperature is presented in a visual form, so that a worker can observe the temperature conveniently, and the problem of quickly detecting the welding effect of the pipe fitting is solved.

The invention provides a method for preparing a Ti-Al2O3-PVDF (Polyvinylidene Fluoride) mixed seawater corrosion-resistant coating by low-pressure cold spraying, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Ti powder, Al2O3 ceramic particles and polyvinylidene fluoride (PVDF) powder to obtain cold spraying prefabricated powder; and the cold spraying prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Ti-Al2O3-PVDF mixed seawater corrosion resistant coating is obtained. The prepared coating not only has excellent mechanical strength and corrosion resistance, but also has good thermal stability and toughness, is suitable for various harsh application environments, especially can be applied to ocean engineering environments, and can resist seawater scouring and corrosion.

The invention discloses a tube nest type paraffin heat storage device, and relates to the technical field of heat storage devices, the tube nest type paraffin heat storage device comprises an outer shell, a mounting shell and a plurality of groups of tube nest assemblies, each tube nest assembly comprises a fixing frame, a plurality of heat storage tubes and tube hoops used for fixing the heat storage tubes, and each heat storage tube comprises a tube body, a heat storage medium and a heat exchange promoting mechanism. The heat exchange promoting mechanism is arranged in the pipe body and used for removing solid paraffin solidified on the inner wall of the pipe body in the heat release process and pushing the solid paraffin towards the inner wall of the pipe body in the heat absorption process so as to promote heat exchange. The heat exchange promoting mechanism is arranged in the heat storage pipe, solid paraffin solidified on the inner wall of the pipe body can be effectively removed in the heat release stage, heat resistance is reduced, it is ensured that heat is smoothly transmitted to liquid paraffin, and heat release is completed; and the contact area between the paraffin and the pipe wall is increased, and efficient absorption of heat is promoted.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The invention relates to the field of high-temperature protective ceramic coatings for aero-engines, and particularly discloses an environmental barrier coating with a gradient structure and a long service life and a suspension plasma spraying preparation method thereof. The specific method comprises the following steps: by taking silicon powder as a raw material, preparing a bonding layer on a silicon carbide ceramic or SiCf / SiC ceramic-based composite material by utilizing an axial powder feeding three-electrode atmosphere plasma spraying system, preparing suspension liquid by taking rare earth silicate RE2Si2O7 and the like as raw materials, and respectively spraying a compact structure RE2Si2O7 middle layer and a columnar crystal-like structure RE2Si2O7 surface layer; and the prepared state coating is placed in Ar atmosphere and subjected to high-temperature annealing treatment, and the environment barrier coating with the high crystallinity and the gradient structure is obtained. The coating prepared by the invention has gradient transition structural characteristics, has excellent thermal shock resistance in actual tests, and has important application significance in prolonging the service life of silicon carbide ceramic or SiCf / SiC ceramic-based composite materials.

The utility model relates to the technical field of compressors, and particularly discloses a novel large-diameter piston component of a reciprocating compressor. A main body structure of the piston consists of a shaft side piston body and a cover side piston body which are connected through matching of a positioning seam allowance. The shaft side piston body comprises a shaft side core shaft, an end plate, an outer ring, a rib plate and a hoisting screw hole, and the cover side piston body comprises a cover side core shaft, an end plate, an outer ring, a rib plate and a hoisting screw hole. And the piston component is accurately positioned through the matched installation of the cover side positioning spigot and the shaft side positioning spigot. The piston body is fixed through welding, and connection is ensured through a full-welding double-face fillet weld and an inverted-groove annular weld. After welding, the welding quality is detected by ultrasonic waves so as to ensure that the welding quality meets the standard requirement. The piston component has the effects of being simple in structure, convenient and fast to manufacture, accurate in positioning, firm in structure and controllable in welding quality, and the performance and stability of the reciprocating compressor can be effectively improved.

The invention provides a method for preparing an Al-Al2O3-TPU (Thermoplastic Polyurethane) mixed corrosion-resistant coating through low-pressure cold spraying, which comprises the following steps: carrying out surface treatment on a base material, and sequentially grinding, polishing, cleaning, drying and sandblasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Al powder, Al2O3 ceramic particles and thermoplastic polyurethane (TPU) powder to obtain cold spraying prefabricated powder; and the cold spraying prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, polishing and correction are conducted, and the Al-Al2O3-TPU mixed corrosion-resistant coating is obtained. The prepared coating is good in compactness and uniformity, has good mechanical performance and corrosion resistance, can be applied to the ocean engineering environment and can resist seawater scouring and corrosion.

This invention discloses a method for preparing high-entropy ceramic matrix composites using a reactive infiltration process, belonging to the technical field of ceramic matrix composites. The steps are as follows: at least four single-component carbides are ball-milled and mixed with a carbon source, then dispersed in a dispersion liquid to obtain a slurry; continuous fibers are woven into a preform, and an interface layer and a matrix layer are deposited to obtain a semi-dense composite material; the slurry is introduced through vacuum or pressure impregnation; and a high-entropy carbide matrix is ​​generated in situ and densified by reactive infiltration after embedding with a transition metal and its alloy. This invention solves the problems of long process cycles, high porosity, high cost, and insufficient introduction of high-entropy ceramics in existing processes, achieving rapid densification and improving the material's high-temperature stability, oxidation resistance, and ablation resistance. It is suitable for the large-scale production of thermal protection materials for hypersonic vehicles.

The invention discloses an aluminum alloy surface anti-corrosion composition and a preparation method and application thereof.In the surface anti-corrosion composition, a WC hard phase provides the framework hardness of a coating, a Co-Cr metal phase endows the coating with good toughness, and the WC hard phase and the Co-Cr metal phase act synergistically, so that the obtained coating has excellent hardness, wear resistance and corrosion resistance; according to the surface anti-corrosion composition, rare earth powder is introduced to serve as an auxiliary, grains can be refined, grain boundaries can be purified in the coating, formation of a denser coating is promoted, an optimized Co-Cr metal phase is combined, and the corrosion resistance of the surface anti-corrosion composition is greatly improved. The long-acting corrosion resistance of the coating in severe environments such as salt mist and damp and hot environments is remarkably improved through synergism, bubbling and stripping of the coating and corrosion of a base body are effectively inhibited, and the remarkable corrosion resistance effect is achieved on the whole.

This invention provides a surface mount reflow soldering method and apparatus. The method includes: pre-treating the solder paste state and performing reference positioning correction on the PCB pads to align the PCB pads with the target pad area; using an electroformed stencil with inverted conical openings and a surface nano-coating, printing the pre-treated solder paste onto the PCB pads under closed-loop monitoring; placing the printed PCB in a reflow soldering chamber, and strictly controlling the residual oxygen content in the chamber below a preset critical value through a closed-loop oxygen concentration control system; and performing thermal history control of the reflow soldering peak temperature, holding time, and cooling temperature based on the melting point characteristics of the solder paste to complete the soldering process. This improves printing transfer efficiency, reduces soldering oxidation problems, and ensures sufficient melting and wetting of the solder.

This invention discloses a method for refining primary silicon in Al-Si alloys through synergistic modification with nano-ceramics based on laser additive manufacturing. The method involves uniformly mixing Al-Si alloy powder with TiB2 and Al2O3 nano-ceramics using a ball mill under inert gas protection to obtain a ceramic-reinforced nano-Al-Si alloy composite powder. This nano-ceramic-modified Al-Si alloy powder is then melted and solidified layer by layer using a laser powder bed melting and forming equipment to create the desired target part. In this method, during the solidification of the nano-ceramic-reinforced Al-Si alloy melt, Al2O3 nanoparticles, due to their similarity to the Si crystal structure and the existence of a good interfacial coherence relationship, act as heterogeneous nucleation sites for primary silicon, increasing the nucleation rate and refining the size of primary silicon. TiB2 nanoparticles, distributed at the solid-liquid interface, can to a certain extent prevent the diffusion and aggregation of Si atoms into Si-Si atom clusters, thereby inhibiting the growth of the primary silicon phase, promoting the regularization of the primary silicon morphology and refining its size, and effectively reducing matrix grain size, significantly improving the mechanical properties of the Al-Si alloy.

The utility model discloses a top light-emitting panel structure packaged by hard board glass in the technical field of hard screen panels, which comprises a glass substrate, a glass cover plate, a grid circuit layer, a color filter film layer and a light resistance supporting layer, and a grid insulating layer, a source-drain insulating layer and a semiconductor conducting layer are attached to the top of the glass substrate. The color filter film can be prepared on the glass cover plate with the hard board characteristic, packaging can be carried out through the hard board packaging technology, meanwhile, the front light emitting rate is effectively improved through the color filter film and the micro lens on the top of the color filter film, and product power consumption is effectively reduced; by reasonably designing the distance between the color filter film layer and the OLED evaporation layer and the relation between the height of the glass powder glue and the height of the film layer between the glass, the color filter film layer can be prevented from being influenced by packaging and pressing pressure, and the problem of abnormal light emission caused by interference of the evaporation layer is avoided.

This invention discloses a reflective vest reflective strip hot-pressing module and its process, relating to the field of reflective strip hot-pressing technology. The invention includes a support platform, an inner sleeve, a hot-pressing plate, an air extraction assembly, and a cleaning mechanism. The contact plate of the inner sleeve is equipped with micro-airflow holes, which, in conjunction with a piston plate, pins, and a vacuum pump, achieve air extraction during hot pressing. Furthermore, the hot-pressing process of this invention sequentially performs a low-temperature gentle pressing, a preheating and air extraction stage with gradual air extraction, and a high-temperature, high-pressure melting and bonding stage. Automatic cleaning is triggered by piston plate movement monitoring, and residual adhesive is ejected using pins and cleaned by a brush roller. This invention effectively avoids air bubbles between the reflective strip and the fabric, enhances adhesion, and simultaneously achieves automatic equipment cleaning, improving the quality and efficiency of hot pressing.

The invention provides a method for preparing a Ni-Al2O3-PEEK mixed corrosion-resistant coating through low-pressure cold spraying, and the method comprises the following steps: carrying out surface treatment on a base material, and sequentially carrying out grinding, polishing, cleaning, drying and sand blasting to obtain a base material to be sprayed; the preparation method comprises the following steps: mechanically mixing Ni powder, Al2O3 ceramic particles and polyether-ether-ketone (PEEK) powder to obtain cold spraying prefabricated powder; and the cold spraying prefabricated powder is subjected to low-pressure cold spraying to a to-be-sprayed base material, after the coating is cooled and cured, grinding and correction are conducted, and the Ni-Al2O3-PEEK mixed corrosion-resistant coating is obtained. The prepared coating is good in compactness and uniformity, has good mechanical performance and corrosion resistance, can be applied to the ocean engineering environment and can resist seawater scouring and corrosion.

The present invention relates to the technical field of plate grid processing, and discloses a heating device for both sides of the plate grid, including a base, a first guide roller and a second guide roller, the first guide roller and the second guide roller are respectively connected to the two ends of the base in a vertically rotatable manner, the front end of the base is provided with a feeding table that can move up and down along one side of the base, the base is provided with heating lamps on both sides of the composite mesh plate grid, and an adjustment mechanism is provided between the heating lamps on both sides that can adjust the distance according to the weight of the composite mesh plate grid. The present invention improves the utilization rate of heat by the hot melt line and shortens the hot melt time; according to the weight of the composite mesh plate grid, the distance between the composite mesh plate grid and the heating lamp is adjusted to achieve a good hot melt effect.

The present invention proposes a pipe interface weld quality control method, the method comprises the steps of initializing welding parameters, preprocessing and forming the pipe joint, monitoring the welding process, detecting the welding quality, and recording and reporting. By cutting an annular step on the pipe joint to be plugged with the pipe interface opened on the pipeline, and arranging a limiting boss on the annular step to limit the welding height, the method can also be used as a welding material to participate in the self-melting welding process to complete the fixation of the pipeline and the pipe joint. By establishing a control formula for the size of the limiting boss and the welding heat, the mechanical property requirements of the weld and the uniformity of the weld, the adjustment of the size of the limiting boss has a basis to rely on, and effectively avoids the problems of uneven welds and substandard strength caused by insufficient experience judgment in traditional welding. The present invention significantly improves the stability and reliability of the welding process and improves the overall welding quality of the pipeline connection by accurately controlling the size of the limiting boss.

The invention relates to the technical field of preparation of LWRT composite boards, in particular to a preparation method of an LWRT composite board, the LWRT composite board and application of the LWRT composite board. Glass fibers and polypropylene fibers are sequentially subjected to opening, dry carding, cross lapping and needling, and a composite felt material is obtained; the obtained composite felt material passes through a first heating area, the non-woven fabric and the hot melt adhesive layer simultaneously pass through a second heating area along with the composite felt material from the upper surface and the lower surface of the composite felt material, and then the LWRT composite board is obtained through thermal compounding and cold setting. By controlling the selection and proportion of the non-woven fabric, the hot melt adhesive layer, the resin fiber and the glass fiber and combining a material mixing process, a needling process, a thermal compounding process, a cold setting process and the like, the bending property, the interlayer cohesive force, the thickness uniformity and the like of the composite board are remarkably improved; therefore, many challenges of existing LWRT plates in partition plate interlayers of motor homes, passenger cars and van vehicles are overcome.

The present invention relates to the technical field of polymer foaming materials, and provides a polyamide elastomer foam material with a bimodal pore structure and a preparation method thereof. The present invention utilizes foaming gas CO2 to perform saturation treatment on a polyamide elastomer sheet solid sample, wherein the first saturation treatment is to perform a melting treatment on the polyamide elastomer to eliminate crystals; by regulating the temperature and time of the second saturation treatment, the weight crystallization degree of the polyamide elastomer is regulated to be 1.1-10%, thereby preparing a polyamide elastomer foam material with a bimodal structure having controllable pore size; since the temperature and pressure of the second saturation treatment are under the supercritical condition of CO2, the foaming temperature range is widened, and not only the polyamide elastomer foam material with a bimodal pore structure is obtained, but also the foaming ratio of the polyamide elastomer foam material is improved.