579 results about "Hot press" patented technology

The application provides a preparation method of high-conductivity carbon fiber paper and belongs to the technical field of fuel cells. The method comprises the following steps: step 1, dissolving a water-soluble polymer in water to prepare a dispersion liquid with a certain concentration; step 2, dispersing short-cut carbon fibers with a certain thickness of metal plating layer in the dispersion liquid to prepare a fiber slurry; step 3, performing wet papermaking on the slurry, and performing pressing and drying to prepare a raw paper; and step 4, performing high-temperature hot pressing treatment on the raw paper under a reducing atmosphere and a certain pressure to prepare a primary carbon paper. The prepared carbon paper has an electrical resistivity less than 3 mΩ·cm, a porosity greater than 80%, and a gas permeability greater than 2200 ml·mm / [cm 2 ·h·mm·Aq]. The application improves the electrical conductivity of the carbon paper and the gas permeability of the carbon paper, and the process is simple, and the performance of the fuel cell can be obviously improved.

This invention proposes a metal soft magnetic powder core with excellent low-frequency magnetic properties and its preparation method, belonging to the field of magnetic materials. Using at least nano-boron powder and iron-silicon soft magnetic alloy powder as raw materials, high-temperature diffusion and high-temperature nitriding treatments are employed. Part of the nano-boron powder forms a high-resistivity iron-silicon-boron permeation layer on the surface of the iron-silicon soft magnetic alloy powder, while some nano-boron powder forms a boron nitride insulating layer with both high resistivity and high thermal stability between the iron-silicon soft magnetic alloy powders, effectively controlling eddy currents. Hot pressing further increases the density of the metal soft magnetic powder core, reduces the demagnetizing field, thereby improving permeability and reducing hysteresis loss. Thus, excellent low-frequency magnetic properties of high density, high permeability, and low loss are simultaneously obtained in the metal soft magnetic powder core.

This invention discloses a composite molding control method and system for automotive trunk carpets, belonging to the field of intelligent manufacturing technology. The method includes: acquiring multi-layer carpet material to obtain a composite material to be molded; collecting multi-layer hot-pressing related characteristic information, generating a pressure-temperature field control spectrum and dynamic surface contact state of key surfaces that vary with time and space through digital twin simulation; controlling the hot press to perform molding operations using the pressure-temperature field control spectrum, activating a flexible thin-film sensor array to monitor the pressure distribution, material contact state, and micro-vibration of key surfaces in real time, and generating synchronous surface contact state data; comparing the synchronous surface contact state data with the dynamic surface contact state, calculating the state difference vector field, and performing dynamic compensation. This application solves the technical problem in the prior art where the hot-pressing molding parameters for automotive trunk carpets are fixed, making it difficult to accurately control key surfaces, resulting in numerous defects such as wrinkles and cracks, and poor batch consistency.

The present invention provides a sealing sheet for solar cell modules that offers a desirable level of molding properties, heat resistance, and effectively suppresses defects during hot press processing. [Solution] A encapsulating sheet for solar cell modules, with a polyolefin resin as the base resin, a melting point of 55°C to 120°C, a temperature difference of 20°C or less between the extracellular melting initiation temperature and the melting point, and a shear rate of 2.43 × 10 sec measured at 190°C. -1 The solar cell module comprises a sealing sheet having a melt viscosity of 1000 Pa·s or more and 4000 Pa·s or less, preferably with a gel fraction of 10% or less, and at least one of the front sealing layer and the back sealing layer being composed of the sealing sheet.

The utility model discloses a hot press shaping machine, including base, be equipped with the pressure plate mechanism on the base, the pressure plate mechanism outside is equipped with the light curtain protection mechanism, the pressure plate mechanism outside cover is equipped with the protective cover, the protective cover is equipped with an opening, the light curtain protection mechanism is located the opening place, the light curtain protection mechanism includes the opposite arrangement and is equipped with the receiving end of the emission end and the opening both sides respectively. Through the protective cover and the light curtain protection mechanism, the hot pressure operation area is closed and is protected, not only effectively blocks the invasion of foreign matters, but also can monitor the safety state of hot pressure area in real time. When the hand of operator or other objects enters the hot pressure operation area, the light curtain protection mechanism can detect the signal that the light beam is blocked quickly, and the signal is transmitted to the PLC controller, and the PLC controller triggers the stop command immediately, thereby preventing the pressure plate mechanism from continuing to act, effectively avoiding the extrusion injury to the personnel, and improving the operation safety.

The utility model discloses a whole structure design realizes to avoid the battery to be affected by external force and cause diaphragm to wrinkle, damage and pole piece misplacement, avoids the electric core to be adhered on the hot pressing plate, ensures the appearance integrity of electric core not to be damaged and ensures the quality of electric core, promotes the reliability and efficiency of carrying lamination type battery, improves the yield of lamination type battery, reduces the loss, reduces the cost, and the lower heating plate is the overall design, can realize the compatible electric core of different size or different specification, and the versatility is strong.

The utility model discloses a kind of hot press forming devices for XPE material, including workbench, four columns are vertically arranged in workbench top, four column top is commonly connected with upper horizontal plate, first cylinder is fixedly installed in upper horizontal plate top, first cylinder output end is connected with moving crossbeam and is penetrated by upper crossbeam, moving crossbeam is slidably connected with four columns by sliding bearing seat, two hot pressure power pieces are fixedly installed in moving crossbeam top, the pressing plate is connected with the output end of two hot pressure power pieces and is penetrated by moving crossbeam, upper hot press plate is installed in the bottom of pressing plate, a pair of linear guides is installed in workbench top, moving plate is commonly connected with the top of a pair of linear guides, lower hot press plate is installed in moving plate top, screw nut moving device is installed in the bottom of moving plate;By screw nut moving device driving moving plate and lower hot press plate whole removal work area, operator completes feeding and discharging in open safety area, completely avoid human body into upper mould pressing dangerous area, eliminate clamping and pressing risk.

The present invention relates to a method for heating a steel sheet or a blank for hot press forming, in which the heating method comprises: a step of preparing a steel sheet or a blank; and a heating step in which the steel sheet or the blank is passed through a heating furnace including two or more zones, wherein, in the heating step, the temperature and residence time of each zone are controlled such that Hsum, which is represented by relational expression 1, is 1.00 or more.

The application provides a method for preparing a high-entropy alloy composite material. In the application, a high-entropy alloy grid is prepared by using a synchronous laser cladding technology, the high-entropy alloy grid is strengthened by using a heat treatment technology, the high-entropy alloy composite powder is formed by using a hot pressing technology, and finally the hot-pressed composite material is finally formed by using a laser melting technology. The existence of the high-entropy alloy grid can avoid the large-area enrichment of ceramic particles, the preform is prepared by using the hot pressing technology, the combination between the high-entropy alloy grid and the high-entropy alloy composite material in the subsequent melting process is increased, and the aggregation speed of the ceramic particles in the melting process is slowed down, so that the high-entropy alloy composite material is solidified and formed before the ceramic particles are aggregated. Therefore, the high-entropy alloy composite material prepared by the application does not have the aggregation of the reinforcing phase, and the composite material has good strength and toughness.

The utility model discloses a particle steel hot press forming device which comprises a working table, a stand, a hydraulic cylinder and a guide hopper, the stand is connected to the top end of the working table, the hydraulic cylinder is arranged on the stand, a telescopic rod is vertically downward, and the bottom end of the hydraulic cylinder is connected with a pressing block. The rotating mechanism is used for driving the rotating disc to rotate, one pressing groove is filled with materials when passing through the lower portion of the material guiding pipe, the pressing groove is pressed when passing through the lower portion of the hydraulic cylinder, after rotation continues, when the pulley rolls on the protruding block, the pulley jacks the top plate upwards, the top plate pushes out pressed particle steel, and continuous circulation is achieved. The particle steel hot-pressing efficiency is improved, during material filling, the driving mechanism continuously drives the material guide pipe to rotate, the probability and frequency of blockage are greatly reduced through rotation of the material guide pipe, the requirement for shutdown cleaning is reduced, and the continuous operation time and reliability of equipment are improved.

This invention discloses a fully automatic hot pressing device for electronic display screen production, relating to the field of electronic display screen hot pressing technology. It includes a base and a first hydraulic rod. Two sets of the first hydraulic rod are symmetrically arranged on both sides of the base. The output end of the first hydraulic rod is equipped with a long push plate and a long clamping plate. After the first hydraulic rod is activated, the output end drives the long push plate and the long clamping plate to move, pushing the display screen from the left and right sides to make the display screen flat. The long clamping plate, while moving, drives a short clamping plate to move, pushing the display screen completely into the hot pressing area from the front and rear sides. No manual position adjustment is required, improving work efficiency. It ensures that the cover plate and substrate slightly separate while still aligned, preventing premature adhesion of some cover plates to unevenly coated adhesive layers. This ensures that during subsequent hot pressing, all parts of the cover plate and adhesive layer contact simultaneously, guaranteeing uniform adhesion.

A hot-pressing sintering method for an optical zinc sulfide rectifier includes the following steps: zinc sulfide powder pretreatment; loading: mixing the pretreated zinc sulfide powder with a sintering additive with a melting point lower than zinc sulfide and loading it into a mold with a thermal expansion coefficient smaller than that of polycrystalline zinc sulfide, placing it in a hot press furnace, closing the furnace, the weight of the mixed powder loaded into the mold exceeding the raw material weight required for the ideal product of the mold, the mold being pre-coated with a release agent; starting up, when the absolute pressure drops below 500 Pa, starting the heating, while continuing to evacuate to no more than 5 Pa; the first stage heating at 5-10℃ / min to the second stage heating at 300-400℃ / min. 00℃ and hold for 1-4 hours; S4, the vacuum pressure at the second stage target temperature of 300-400℃ should not exceed 5Pa; 10 minutes before the end of the second stage, pre-pressurize in a cold state to 40-60% of the process pressure; in the third stage, continue to raise the temperature to 900-1000℃ at 5-10℃ / min, hold for 30-60 minutes after reaching the temperature, raise the process pressure to 20-40MPa in 30 minutes, and finally hold for 60-120 minutes; after the holding and pressure holding are completed, release the pressure, turn off the heating, let it cool naturally, cool with the furnace to room temperature, and then remove from the furnace.

The utility model provides a kind of cold and hot pressing machine for pressing shoulder seam hat brim, for clothing shoulder hat side seam pressing and setting type, including workbench, mobile module and pressing mechanism, the workbench top is provided with two pressing stations, the mobile module is located above the pressing station, the mobile module is used to drive the pressing mechanism reciprocating movement in two the pressing station, the pressing mechanism includes moving part, lifting assembly and rack, the moving part side is connected with the mobile module drive, the lifting assembly one end is fixedly installed with the moving part, other end is fixedly connected with the rack, and it is used to realize the lifting effect of the rack, the rack is equipped with rotation connecting piece being rotatably connected, hot head and cooling head are respectively provided on the upper and lower surfaces of the rotation connecting piece, two the pressing station is provided with a fixed platform, the fixed platform top shape corresponds with the hot head, the cooling head shape, improve the seam pressing quality, improve yield.

The application relates to a preparation method of a titanium alloy gradient functional material and belongs to the field of advanced processing and preparation of titanium alloy materials. The method can be used for preparing titanium alloy materials with different components and different organizational types. The specific implementation process is as follows: firstly, a mechanical polishing method is used to polish the combination surface of titanium alloys with different components or different organizational types; then the titanium alloys are placed in a hot pressing furnace for heat preservation and pressure preservation to realize metallurgical combination between the titanium alloys; a furnace cooling method is used for cooling; and finally, the titanium alloy gradient functional material is obtained. The titanium alloy gradient functional material prepared by the method has no defects at the gradient interface, the transition zone organization is well combined, and the mechanical properties are excellent. The composition and organization of different regions of the titanium alloy material can be controlled and designed, technical support and theoretical guidance are provided for the preparation and application of the titanium alloy gradient functional material.

This invention discloses a flatness adjustment device for a molding press and the molding press thereof, belonging to the field of molding presses. The device includes a connecting plate, on which a hot press plate is mounted via connectors. Forcing members are located at the four corners of the top surface of the hot press plate. Four driving members are located on the side of the connecting plate facing the hot press plate, each driving member acting on one of the forcing members. When the transmission assembly rotates the turning part, the rotation of the turning part, through the driving part, forces the corresponding forcing members to move the corresponding corner of the hot press plate by a displacement at the micrometer level, thereby achieving precise adjustment of the corners of the hot press plate. Compared to the existing technology that directly adjusts by striking a conical rod with a hammer, this method is more convenient and ensures a higher degree of precision, allowing operators to adjust the flatness of the hot press plate more quickly.

A graphene copper composite material preparation method based on a combination of hot pressing sintering and chemical vapor deposition, comprising: presetting multi-layer copper foil in a hot pressing chamber; preparing a graphene thin film on the surface of the copper foil by means of a chemical vapor deposition method to obtain a graphene copper composite material; and then performing hot pressing forming on the multi-layer graphene copper foil material to prepare the graphene copper composite material. Said material can replace a traditional copper material or silver material, is applied to a supercapacitor or a motor driving device, and has the effects of improving efficiency, reducing temperature rise, etc.

The present application relates to a kind of preparation methods of peelable polyimide laminated film, which is made of multiple polyimide composite films by hot pressing forming, wherein the polyimide composite film is composed of polyimide film and adhesive, by controlling the thickness of adhesive layer, forming temperature, forming pressure and holding time, the peel strength of laminated film is controlled, and the peel strength controllable polyimide laminated film is obtained.Compared with the prior art, the present application effectively controls the peel strength of laminated film, and obtains a peelable polyimide laminated film with controllable peel strength.The method can control the peel strength of laminated film according to the use requirement, is easy to process and use, has low requirement for equipment, is easy to implement, and can be used for preparing peelable gasket.

The application discloses an AI algorithm-based intelligent control method for urea-formaldehyde resin toilet cover hot press forming, relates to the technical field of intelligent hot press forming control, and comprises the transmission and preprocessing of collected sensor data; after the preprocessing of the collected sensor data, a man-machine interaction interface is constructed in a matched mode.The application improves the control precision, stability and intelligent level of the urea-formaldehyde resin toilet cover hot press forming process, reduces the dependence on manual intervention, improves the production efficiency and product quality stability, solves the problems of response lag, insufficient precision and difficulty in generalization of the traditional control method, and provides an efficient, reliable and applicable intelligent manufacturing solution for the hot press forming process.

The utility model relates to bag sealing technical field, concretely is a kind of heat sealing device of biodegradable bag. It includes frame, bag mouth smoothing device and bag mouth heat sealing device. Frame is provided with mounting bracket;Bag mouth smoothing device includes lifting plate, two shift poles of sliding installation on lifting plate and the drive assembly for driving two shift poles mutually close or away;Second air cylinder for driving lifting plate lifting is installed on mounting bracket;Bag mouth heat sealing device includes two hot-pressing mechanisms of symmetrical arrangement. The utility model passes through bag mouth adsorption, smoothing, heat sealing and a series of orderly operation steps, realizes the high-quality sealing of biodegradable bag.

This application relates to a vacuum control system and a vacuum hot pressing device. The vacuum control system includes a pump assembly and a tank assembly. The pump assembly includes at least two vacuum pumps connected in parallel, each vacuum pump being connected to a press. The tank assembly includes at least one vacuum tank. The output end of the tank assembly is connected to the pump assembly, and the input end of the tank assembly is connected to the press. The output end of the tank assembly is connected to the pump assembly, allowing the vacuum pumps to extract gas from the vacuum tank, thus pre-storing negative pressure in the vacuum tank. When the pressure value inside the press reaches the target value, since the input end of the tank assembly is connected to the press, each vacuum pump can be shut down. The vacuum level inside the press is maintained by the tank assembly, providing dynamic pressure compensation for the vacuum level inside the press. This improves the vacuum stability inside the press, reduces the number of start-stop cycles of each vacuum pump in the pump assembly, extends their service life, and simultaneously reduces energy consumption and production costs.

This invention discloses a device for secondary shaping of recycled plastic in automotive limiter boxes, relating to the field of automotive limiter box manufacturing technology. It includes a base and a bottom platform fixedly connected to it via columns. A rotating mechanism is provided on the upper side of the bottom platform, and a hot-pressing mechanism is located near the front of the upper side of the rotating mechanism. The rotating mechanism includes a ring-shaped turntable and several ring-shaped components arranged thereon. The lower side of the ring-shaped turntable is rotatably connected to the upper side of the bottom platform. The ring-shaped turntable rotates clockwise, causing all the shaping components to sequentially pass through the front side. This device for secondary shaping of recycled plastic in automotive limiter boxes, by driving multiple shaping components to revolve, achieves the cyclical conversion of the shaping components in the loading / unloading area, heating area, hot-pressing area, and cooling area. This prevents the limiter box from being transferred in other forms during the heating process, improving product yield and reducing time consumption caused by transfer.

The application provides a high-temperature-resistant glass fiber composite folding filter cartridge and a preparation method thereof, and comprises the following steps: alternately laying two layers of composite fiber webs and one layer of glass fiber mesh base cloth, performing composite needling on the formed sandwiched laminated body to obtain a composite needled felt, and performing hot pressing treatment on the composite needled felt to obtain a filter cartridge base material; wherein the composite fiber web is formed by mixed laying of bicomponent low-melting point polyester staple fiber, synthetic fiber and glass fiber; the filter cartridge base material is immersed in a flame retardant composite emulsion, and after drying, a high-temperature-resistant filter cartridge base material is obtained; wherein the flame retardant composite emulsion is prepared by mixing a composite flame retardant, a composite stiffening agent, an enhancing additive and water; and the surface of the high-temperature-resistant filter cartridge base material is sequentially coated and pleated to obtain the high-temperature-resistant glass fiber composite folding filter cartridge. The high-temperature-resistant glass fiber composite folding filter cartridge prepared in the scheme has excellent temperature resistance, erosion resistance, filtration performance and strength.

This invention discloses a hot stamping die, including a die cavity and a punch. A radius (R-angle) region is provided at the connection between the die cavity and the punch. The die cavity has a main vent hole for connecting a high-pressure gas source. The radius of the die cavity has a perforation structure, comprising: a main array of perforations and a secondary array of perforations. The main array of perforations communicates with the main vent hole and extends towards the radius of the die cavity; the secondary array of perforations is located on the radius of the die cavity and communicates with the main array of perforations; or, the outlet is directly located on the main array of perforations on the radius of the die cavity. This invention, by providing a perforation structure in the radius of the die cavity and introducing high-pressure gas, forms an air cushion between the sheet metal and the die, reducing or eliminating direct contact between the sheet metal and the die, thereby reducing friction and wear, avoiding defects such as scratches on the part surface, improving the surface quality of the part, reducing wear on the die surface, and extending the service life of the die.

This invention discloses a method for preparing a multifunctional graphite / iron powder / geotextile composite material, relating to multifunctional material technology. The preparation method includes the following steps: First, PU-2540 resin is stirred at 500 rpm for 10 minutes. Then, graphite, iron powder, and dispersant are added at 600 rpm over 4 hours. After the addition is complete, the stirring speed is increased to 800 rpm, and dispersion continues for 30 minutes. The prepared slurry is scraped onto geotextile, and then placed on a polytetrafluoroethylene film and allowed to stand at room temperature for 16 hours. After standing, the material is clamped on both sides into a stainless steel hot press mold and placed in the center of the lower platen of the hot press. The hot press is started, a certain pressure is applied and maintained constant, and then the upper and lower plates are heated simultaneously, and hot pressing is performed under this pressure and temperature. This invention achieves multifunctional integration of wave absorption, electrothermal properties, corrosion resistance, and UV protection, providing a lightweight and flexible integrated protective material solution for offshore wind turbine towers.

The application relates to the technical field of plate forming, in particular to a glue-applied integrated material group-assembly hot-press forming device and method, which comprises a processing table, the upper surface of the processing table is provided with a concave frame through a lifting mechanism, the lower end of the concave frame is fixedly provided with an outer pressing plate, the inner side of the outer pressing plate is vertically slidably embedded with an inner pressing plate, a plurality of air guide grooves are arranged on the inner surface of the outer pressing plate, the upper end of the air guide groove and the side close to the inner pressing plate are open, an inclined bottom slope is arranged on the inner bottom surface of the air guide groove, a pulling mechanism is arranged between the upper surface of the inner pressing plate and the inner top surface of the concave frame, a connecting column is fixedly connected to the middle of the upper surface of the inner pressing plate, a lifting block is fixedly connected to the upper end of the connecting column, and a pushing block is connected to the inner top surface of the concave frame through a transverse movement mechanism. After hot pressing, the inner pressing plate and the outer pressing plate form a height difference for rapid exhaust, prevent bubble formation and unreal gluing, and the outer pressing plate stabilizes the edge and prevents warping.

The application discloses a kind of one-step two-stage hot-pressing transfer printing preparation membrane electrode method.It includes the following steps:S1, cathode catalyst slurry is coated to first transfer substrate to form cathode catalytic layer, and anode catalyst slurry is coated to second transfer substrate to form anode catalytic layer;S2, first paving layer, second transfer substrate formed with anode catalytic layer, proton exchange membrane, first transfer substrate formed with cathode catalytic layer and second paving layer are sequentially stacked and paved on hot press, first hot-pressing treatment, second hot-pressing treatment are sequentially executed, and the cathode catalytic layer and anode catalytic layer are arranged close to the proton exchange membrane;Wherein, the processing pressure of the first hot-pressing treatment is less than the processing pressure of second hot-pressing treatment, and the processing time of the first hot-pressing treatment is greater than or equal to the processing time of second hot-pressing treatment.The method of the application can improve the transfer printing rate of catalytic layer, while retaining the initial pore structure of catalytic layer to the greatest extent, and improve the peak power density of membrane electrode.