52results about How to "Improve molding rate" patented technology

The utility model discloses a laser welding rope chain machine which comprises a wire frame, a feeding assembly, a semi-forming shearing assembly, an extrusion conveying assembly, an upper clamping rotating assembly, a side clamping rotating assembly, a lower clamping rotating assembly and a laser welding device. The upper clamping rotating assembly and the lower clamping rotating assembly are oppositely arranged up and down, the upper clamping rotating assembly can ascend and descend relative to the lower clamping rotating assembly, the side clamping rotating assembly is located on the rear side of the lower clamping rotating assembly and corresponds to the lower clamping rotating assembly, and the feeding assembly is located on the front side of the lower clamping rotating assembly. The thread stand is located on the front side of the feeding assembly, the semi-forming shearing assembly is located at the discharging end of the feeding assembly and can ascend and descend, and the extrusion conveying assembly is slidably connected with the side portion of the feeding assembly. By means of the method, braid chain knitting is achieved through mutual cooperation of all the assemblies, the whole process is automatic, manual operation is reduced, and the production efficiency is improved. And the forming rate and the working efficiency are greatly improved.

The invention relates to the technical field of amorphous zirconia corundum bricks, in particular to an amorphous zirconia corundum refractory brick and a preparation method thereof.The amorphous zirconia corundum refractory brick comprises, by weight, 60-70 parts of alumina powder, 25-35 parts of zircon sand, 5 parts of additives and 11-13 parts of binder.The preparation method comprises the steps of mixing, pouring, drying in the shade and baking. The components of the amorphous zirconia corundum refractory brick are adjusted, silica sol is added as a binder, and one or more of a binder additive, a water reducer additive and a dispersant additive is / are selected as an additive, so that alumina powder and zircon sand are dispersed more uniformly and combined more tightly; and in the preparation process, the green bricks are heated and baked by utilizing a transformed and innovated trolley furnace, the heating is uniform, and the formed amorphous zirconia corundum refractory brick is compact in structure, high-temperature-resistant, corrosion-resistant and permeation-resistant.

The invention relates to the technical field of fused alumina zirconia bricks, in particular to a fused alumina zirconia refractory brick and a preparation technology.The fused alumina zirconia refractory brick is prepared from, by weight, 55-65 parts of alumina powder, 25-35 parts of zircon sand, 1-5 parts of modified nanometer alumina powder, 2-6 parts of binder, 1-2 parts of chromic oxide, 1-3 parts of yttrium oxide and 1-4 parts of fluxing agent. Through in-situ growth of a layer of carbon nanotube core-shell structure on the surface of nano-alumina, the core-shell structure can prevent direct contact between nano-alumina particles, so that the possibility of nano-alumina agglomeration is reduced, and nano-alumina is uniformly distributed in the corundum amorphous refractory brick. A finer dispersed phase is formed in the brick body, so that the expansion of cracks is hindered, and the toughness and the strength of the brick body are improved.

The invention relates to the technical field of smelting, and discloses a dedusting ash cold-pressed pellet preparation method which comprises the following steps: S1, raw material preparation: firstly preparing required converter dedusting ash or gas ash, putting the raw materials into a raw material bin for use after the raw materials are prepared, and in order to ensure the iron element in the pellet and the stability of the pellet, preparing a raw material bin; wherein the fly ash or the gas ash with the total iron content of 55% is used. The fly ash anti-calcium oxide pellet adhesive has the advantages that after the fly ash anti-calcium oxide pellet adhesive and materials are stirred with water, high adhesion can be generated, a good adhesion effect is achieved, the pellet forming rate, the wet pellet anti-falling performance and the dry pellet compressive strength are improved, and secondly, the fly ash anti-calcium oxide pellet adhesive can be recycled. The fly ash anti-calcium oxide pellet adhesive can also inhibit the pellets from disintegration and pulverization in the drying or placing process, so that the cold strength of the pellets is improved, finally, the forming rate of the pellets is high, the fly ash pellets replace scrap steel to be put into a converter and used as a cooling agent, the reaction temperature in the converter can be reduced, and the whole steelmaking process is more stable.

The invention provides a forming preparation method of a carbon monoxide selective oxidation catalyst, which comprises the following steps: A) mixing the carbon monoxide selective oxidation catalyst, sesbania powder and water to obtain a mixed material; b) mixing pseudo-boehmite powder with an inorganic acid solution to obtain a binder; c) mixing the binder with the mixed material to obtain a catalyst precursor; and D) carrying out extrusion molding, drying and roasting on the catalyst precursor to obtain the molded catalyst. According to the method, the catalyst slurry is prepared firstly and then mixed with the binder prepared from the pseudo-boehmite and the inorganic acid solution for forming, the original structure of the catalyst can be protected, the activity of the catalyst is kept, the method is easy to operate, the forming rate is high, and the obtained catalyst is high in strength.

This invention discloses a method for producing granules that reduces the loss of active ingredients, relating to the field of granule preparation technology. This method addresses the problem of active ingredient loss in traditional granule production due to high temperatures, oxidation, mechanical friction, and solvent residue. It employs a four-stage process—low-temperature pretreatment, inert gas-protected granulation, gradient drying, and nano-coating and end-capping—combined with the application of a specialized composite binder, significantly improving the retention rate of active ingredients. Experimental data shows that granules produced using this method have a higher retention rate of active ingredients than those produced by traditional methods, while also exhibiting high granule formation rate and dissolution rates that meet relevant standards. The process of this invention is highly stable and widely adaptable, and can be widely applied to granule production in the pharmaceutical, pesticide, food, and feed industries.

The invention relates to the technical field of phosphorus chemical industry, and discloses a preparation method of ground phosphate rock drying-free cold-pressed pellets, which comprises the following steps: S1, feeding: putting prepared raw ground phosphate rock / washed ground phosphate rock / sintered ground phosphate rock into a stock bin (1) through a forklift for use; compared with the prior art, the drying-free adhesive for the ground phosphate rock pellets has the following advantages and effects that the ground phosphate rock wet pellets subjected to cold press molding after being added with the drying-free adhesive for the ground phosphate rock pellets can be quickly cured after being aired at room temperature, so that the compressive strength of the dry pellets is improved, the thermal stability of furnace charging is improved, the production process is simplified, the energy consumption is reduced, and the molding of the pellets is more stable and controllable; the production efficiency is improved, drying equipment does not need to be added, the equipment investment is reduced, the production cost is reduced, the pellet can replace phosphate ore to be used for producing yellow phosphorus in an electric furnace (submerged arc furnace), the pellet is uniform in particle size, has certain compressive strength and abrasion resistance and good heat resistance, the water content reaches 1% or below, and the power consumption of throwing into the furnace can be reduced.

The invention discloses a donkey-hide gelatin composition and a preparation method thereof, and relates to the technical field of traditional Chinese medicine products and health-care products. The donkey-hide gelatin composition comprises a ball core and a wrapping layer wrapping the outer side of the ball core. The ball core is a puffed donkey-hide gelatin ball obtained by puffing a donkey-hide gelatin ball; the sphericity degree of the puffed donkey-hide gelatin balls and the sphericity degree of the donkey-hide gelatin balls accord with a specific relationship. The donkey-hide gelatin balls are used as initial raw materials for processing, the donkey-hide gelatin balls are heated uniformly in the puffing treatment process, and the obtained puffed donkey-hide gelatin balls are low in soft yolk rate, free of scorched bitter taste, rich in donkey-hide gelatin flavor and better in taste. Furthermore, by controlling the sphericity degree ratio of the donkey-hide gelatin balls to the puffed donkey-hide gelatin balls before and after the puffing treatment, various defects in the puffing treatment process can be well controlled, such as the mouth feel problems of breakage, soft yolk, charring and the like.

The invention belongs to the technical field of low-pressure casting, and particularly relates to a low-pressure casting device and method for a large-size aluminum alloy shell metal outer mold composite sand core, the height of a large-size aluminum alloy shell casting is not lower than 600 mm, the inner diameter is not lower than 700 mm, and the average wall thickness is 14-20 mm; the low-pressure casting device comprises a mold system, a sand core system, a pouring system, a chilling block system and a dead head, the pouring system adopts a bottom pouring and stepped pouring mode, the structure of the pouring system is designed according to the height, the transverse characteristic size and the average wall thickness of a casting, the pouring system is deeply optimized, and the casting quality is improved. By adopting the design mode of multiple sprues and circumferentially and uniformly distributed transverse sprues, it is ensured that a feeding channel is solidified later than a casting, the pressure maintaining pressure is continuous and effective, the casting defects of cold shut, air holes, shrinkage cavities, shrinkage porosity and the like are avoided, the mechanical property and air tightness of the large-size casting are remarkably improved, and the cost rate is increased.

The utility model discloses a stamping die for an anti-explosion valve plate. The stamping die comprises a base, a fixing hole is formed in the upper surface of the base, a lower die base is arranged above the base, an installation hole is formed in the upper surface of the lower die base, a bolt penetrates through the installation hole, and a lower die is installed above the lower die base. According to the stamping die for the anti-explosion valve plate, the lower die, the limiting sleeve, the upper die, the limiting rod and the spring are used in cooperation, in the stamping forming process of the anti-explosion valve plate, the upper die and the lower die can be closed, and at the moment, the limiting rod can be aligned and penetrate into the limiting sleeve, so that the upper die is guided; the upper mold and the lower mold are closed more accurately, the forming rate of the anti-explosion valve plate is increased, the lower portion of the spring abuts against the limiting sleeve when the upper mold is pressed downwards, the spring is compressed, the upper mold is buffered, and the upper mold and the lower mold are prevented from being greatly abraded after long-time use.

The invention relates to the technical field of traditional Chinese medicine and health food processing, and discloses a preparation process and application of a black ginseng extract lozenge, and the preparation process comprises the following steps: crushing starch, powdered sugar and polyethylene glycol in parts by weight, and sieving for later use; performing ultrasonic extraction and vacuum concentration on the black ginseng to obtain a black ginseng concentrated solution; slowly adding a pre-prepared black ginseng concentrated solution into the sieved starch and powdered sugar, and stirring to prepare a soft material; granulating, drying and finishing the soft material to obtain dry granules; and adding sieved polyethylene glycol into the dry particles, uniformly mixing, tabletting, forming, and sterilizing by ultraviolet radiation to obtain the buccal tablets. According to the method, ultrasonic-assisted extraction is adopted, so that degradation of heat-sensitive rare saponin is avoided; the concentrated solution is directly granulated, so that the difficulty that the extract absorbs moisture and is sticky is overcome, and the forming rate is increased; the prepared lozenge can activate a PI3K-Akt signal channel and regulate release of 5-HT, and can be used for preparing products for relieving chronic fatigue syndrome and improving spatial cognitive impairment.

The utility model provides an air flow stabilizing device for glass fiber production, which comprises a base, an air outlet channel is arranged in the base, a plurality of air outlets communicated with the air outlet channel are arranged at the bottom of the base, and an air inlet pipe communicated with the air outlet channel is arranged on the side surface of the base. The vertical air curtain device is simple in structure, the vertical air curtain is formed downwards through the air outlet, air flow in a forming area is controlled, uneven tow thickness and broken ends caused by table position air flow disorder can be effectively improved, and the glass fiber drawing forming rate and quality are improved.

The utility model relates to the technical field of automobile part machining, and discloses a stamping device for automobile part machining, which comprises a bottom plate, supporting plates are fixedly mounted at the left end and the right end of the top of the bottom plate respectively, a lifting plate is arranged between the two supporting plates, and a top plate is arranged at the top of the lifting plate. The left end and the right end of the bottom of the top plate are fixedly installed on the tops of the two supporting plates correspondingly, a punching machine is fixedly installed on the top plate, the telescopic end of the bottom of the punching machine is fixedly installed on the top of a lifting plate, a punching head is fixedly installed at the bottom of the lifting plate, a punching table is arranged on the lower side of the punching head, and a part is arranged on the top of the punching table. Clamping plates are arranged on the left side and the right side of the part correspondingly, displacement of the part in the stamping process is avoided, the part forming rate is increased, meanwhile, the working efficiency is improved, and the practicability of the device is effectively improved.

The present invention relates to the technical field of underground mining equipment, and discloses an energy-saving coal mine underground pneumatic gun mud making device, comprising a support base, a plurality of moving wheels are arranged at the bottom of the support base, a U-shaped frame is arranged at the top of the support base, a conveying platform is arranged in the U-shaped frame, a side plate and an L-shaped frame are arranged on one side of the U-shaped frame, a fixed plate 2 is arranged at the top of the L-shaped frame, a driver is arranged at the inner center of the top of the fixed plate 2, a gun mud barrel is arranged at the top of the driver, a gun mud bucket is arranged at the top of the gun mud barrel, a discharge port is arranged at the bottom of the inner side of the gun mud barrel, an inclined discharge plate is arranged at the end of the discharge port, a rotating shaft is arranged at the top of the driver, the rotating shaft passes through the bottom of the gun mud barrel, a mounting barrel is arranged at the top of the rotating shaft, and a roller is arranged correspondingly on the side of the mounting barrel. Beneficial effect: the forming rate of gun mud particles is high, the waste of gun mud is greatly reduced, and it has good energy saving performance.

The utility model discloses a tip extrusion device applied to a positive grid lead bar, belongs to the technical field of production of positive grids of lead-acid storage batteries, and solves the problems of low accuracy and unreasonable structure of tip extrusion forming in the prior art. The device mainly comprises a main frame, and is characterized in that a hydraulic oil cylinder, a guide plate and a mounting seat are mounted on the main frame, and a track is arranged on the guide plate; the hydraulic oil cylinder is connected with a fixing plate, a sliding block is installed on the fixing plate, the sliding block and the rail are connected in a sliding mode and matched with each other, a tip squeezing upper cutter is fixed to the bottom of the fixing plate, a tip squeezing lower cutter is installed at the bottom of the main machine frame, a mounting plate is provided with the tip squeezing lower cutter, and the tip squeezing lower cutter is provided with a positioning plate. And the tip extrusion upper cutter and the tip extrusion lower cutter are matched with each other. The utility model has the advantages of more reasonable structure, smaller action range, good operation stability, sufficient power, high safety and stronger practicability.

The utility model relates to the technical field of material forming, and discloses a composite material structural part forming die which comprises a lower die plate and an upper die plate, a first fixing die block is attached to one side of the upper surface of the lower die plate, and a second fixing die block is attached to the upper surface of the lower die plate. According to the composite material structural part forming mold, the lower mold plate, the upper mold plate, the first fixing mold block, the second fixing mold block, the lower molded surface mold block, the upper molded surface mold block, the arc-shaped mold block, the first pressurizing mold block, the second pressurizing mold block and the third pressurizing mold block are assembled, and a mold pressing device for machining and forming a composite material is obtained; meanwhile, one end of the whole body is of an arc structure and a connecting pipe type structure, a main body is of a foam sandwich structure, the weight can be obviously reduced, the solid width of one side face is increased, the matching area is increased, the connecting strength is guaranteed, the precision degree of a formed material is guaranteed, and the forming rate of the material is increased; meanwhile, the whole device is of a detachable structure, and personnel can conduct distributed operation conveniently.

The invention relates to the technical field of investment casting, in particular to a shell making method of a cartridge receiver investment precision casting cavity, which comprises the following steps: S1, pressing a wax mold of a cartridge receiver; s2, forming a process hole in the side wall of the cavity of the wax mold; s3, performing shell making on the cavity; s4, the interior of the cavity is filled with mullite sand; s5, plugging the opening part of the cavity; and S6, overall back layer shell making is conducted on the cartridge receiver. Compared with a ceramic core, the shell making method provided by the invention is more flexible in pipeline forming, and the casting manufacturability difficulty is reduced; the defects that cleaning is difficult and use is limited are overcome, the surface quality of castings is guaranteed, the production period is shortened, and the production cost of the castings is saved; the shell manufacturing method provided by the invention is suitable for manufacturing a narrow long cavity in a large titanium alloy casing investment casting, the quality of the shell in the narrow long cavity is ensured, the strength meets the later smelting and pouring requirements, and the narrow long cavity forming rate is greatly improved.

The socket joint ductile iron jacking pipe of the present invention comprises: a pipe body, a socket and a spigot, and also comprises: a push bearing ring, wherein the push bearing ring is arranged on an annular surface perpendicular to the pipe axis at the bottom of the socket; the method for centrifugally casting a socket joint ductile iron jacking pipe of the present invention comprises: manufacturing a sand core corresponding to the socket of the socket joint ductile iron jacking pipe; installing a push bearing ring at a corresponding position of the annular surface perpendicular to the pipe axis at the bottom of the socket joint of the sand core; installing the sand core with the push bearing ring installed on a core frame of a centrifugal casting machine; centrifugally casting the space between the sand core and the pipe mold and the pipe wall of the pipe mold; after centrifugal casting, pulling the socket joint ductile iron jacking pipe out of the pipe mold and removing the sand core in the socket joint ductile iron jacking pipe; the push bearing ring is added in the normal process link of the casting pipe, and has a high molding rate, a stable structure and a low additional cost. The push bearing ring itself is a rigid component and can transfer the axial force of the push process to the pipe body as a whole.

This application relates to a biomass pellet production pelleting device, belonging to the field of biomass pellet technology. To solve the problem of excessively fast or slow pelleting feed, the device includes a frame, a shell mounted on the frame, a feed hopper at the top of the shell, a partition inside the shell dividing the shell into a feed chamber and a pelleting chamber, and a discharge port at the bottom of the shell. Several sector-shaped grooves are formed through the partition, and a sector-shaped plate is slidably disposed within each groove. An adjustment groove for communicating with the corresponding sector-shaped groove is formed on the side wall of the shell, and an adjustment handle is provided on the sector-shaped plate, passing through the adjustment groove and extending to the outside of the shell. An annular film disc is disposed within the pelleting chamber of the shell, with several pellet holes formed on the annular film disc. A stirring rod is mounted on the partition, and a pressure roller is mounted on the annular film disc. A drive mechanism for synchronously driving the stirring rod and the pressure roller is disposed within the shell. This application achieves the effect of controlling the amount of raw material entering the pelleting chamber per unit time.

The invention relates to a preparation method of an Al-Mn series aluminum alloy flat cast ingot for a power battery shell, in particular to the preparation method of the Al-Mn series aluminum alloy flat cast ingot for the power battery shell. The invention aims to solve the problems of low performance, poor processing stability and poor surface quality of plates and strips produced by the Al-Mn series aluminum alloy flat cast ingot for the power battery shell manufactured by the existing method. Ar gas is adopted to refine and purify the melt, and the melt is purified outside the furnace; a double-rotor degassing device and a 30 + 50ppi double-stage ceramic filter are adopted, so that the content of gas and inclusions in a cast ingot is reduced, and the melt quality is improved; a double-row pulse water cooling technology is adopted, the cooling strength is reduced in the casting starting stage, ingot casting stress is reduced, and the ingot casting forming rate is increased. The method is applied to preparation of the Al-Mn series aluminum alloy flat cast ingot for the power battery shell.

This utility model relates to the technical field of feed pelleting equipment, and discloses an environmentally friendly cattle feed pelleting device, including a base plate. A support column is fixedly connected to one side of the top of the base plate, and a crushing box is fixedly connected to the top of the support column. A second motor is fixedly connected to the top of the front end of the crushing box. Gears are rotatably connected to the front end of the inner wall of the crushing box, and one gear is fixedly connected to the output end of the second motor. A limit rod is fixedly connected to the rear end of the gear, and a crushing roller is slidably connected through the outer ring of the limit rod. An end cover is slidably connected through the rear end of the crushing box. In this utility model, through the cooperation of the crushing box, fixed block, first motor, lead screw, collection box, first filter plate, end cover, second motor, gears, limit rod, crushing roller, and vibrating motor, it can adapt to the crushing requirements of different types of raw materials, and allows for direct cleaning or replacement of the crushing roller, shortening maintenance time and improving equipment operating efficiency.

The invention discloses a hydroxypropyl starch-based composition as well as a preparation method and application thereof. The composition prepared by the invention is prepared from hydroxypropyl starch, polyvinyl alcohol, glycerol, sorbitol, carrageenan, potassium acetate, hydroxypropyl methyl cellulose, dimeticone and water. The hollow hard capsule shell prepared from the composition has the advantages of smooth surface, good transparency, high molding rate, low friability, short disintegration time and high stability, and can provide important reference for replacing traditional gelatin capsules. The preparation method is simple, the cost is low, and the capsule is good in apparent character, good in formability, remarkable in effect in the aspects of friability resistance, rapid disintegration, stable storage and the like, and has huge application prospects in the aspects of medical preparations, food packaging materials, health care product packaging and the like.

This invention belongs to the field of precision casting investment mold technology, and discloses a non-synchronous internal retraction mold opening mechanism and method. It includes: a bottom cover plate, screws, a rotating disk cover plate, a rotating disk, an internal retraction moving rod, a base, a rotating rod, and a rotating rod handle. The bottom cover plate is fastened to the base with screws. The base has eight internal retraction track grooves for the internal retraction moving rod to move on, achieving internal retraction mold opening. The rotating rod handle is installed on the rotating rod, and the rotating rod is fastened to the rotating disk cover plate with screws. A gap is left between the rotating rod and the bottom cover plate and the base. Moving the rotating rod handle drives the rotating rod, rotating disk cover plate, and rotating disk to rotate, ensuring uniform force during wax pattern opening, improving wax pattern forming rate, and reducing operational complexity.

The utility model discloses a composite board pressing device for office furniture production, which comprises a grooved supporting table, one side of the grooved supporting table is movably connected with a supporting rod, and the bottom of the supporting rod is movably connected with supporting legs. According to the device, a grooved supporting table, a supporting rod, supporting legs, a sliding rail, a movable plate, a first air cylinder, a top plate and a second air cylinder are arranged and used in cooperation, so that a worker can rapidly place a composite plate when using the device, and the worker can place the composite plate more conveniently; according to the discharging device for the composite board, a worker can use the device more conveniently, the device is more convenient and faster to use, the practicability of the device is improved when the device is used by the worker, and through cooperative use of a first air cylinder and a top plate, the device can jack up the machined composite board, so that the device is faster during discharging, and the working efficiency is improved. And a worker can more conveniently take the machined composite board, and the practicability of the device is further improved.

The utility model relates to the technical field of sealing rods, in particular to a sealing rod applied to an ABS (acrylonitrile butadiene styrene) wire harness injection molding wire body, which comprises a sealing rod body, the center of the sealing rod body is provided with a through hole for a wire to penetrate through, and the through hole is internally provided with a first adaptive assembly for adapting to wires with different sizes. And the periphery of the sealing rod body is provided with a second adaptive assembly which is used for adapting to device holes of connectors with different inner diameters. The device solves the problem that a traditional wire harness sealing plug cannot meet the butt-joint matching performance of the wire harness and the device holes of the connectors.

The utility model discloses a heat exchanger pipeline bending device for ships, which relates to the technical field of pipeline bending and comprises a processing base, a fixing mechanism is mounted on the left side of the upper end of the processing base, a bending wheel is rotatably connected to the right side of the upper end of the processing base, and a support plate is fixedly mounted in the middle of the right end of the processing base. And an air cylinder is fixedly installed at the right end of the supporting plate, the output end of the air cylinder is fixedly connected with a jacking block, a cooling mechanism is installed at the lower end of the interior of the machining base, and a liquid inlet pipe is installed at the lower left end of the machining base. Under the cooperation of the pulley, the hydraulic cylinder, the fixing block, the fixing groove, the sliding groove, the guide groove, the sliding block and the guide block, the hydraulic cylinder can drive the fixing block to move towards the pulley, then a pipeline can be clamped and fixed, the pipeline can be prevented from being popped out, meanwhile, the pipeline can be prevented from being scratched, and the service life of the pipeline is prolonged. And the appearance and the quality are not influenced.

The present invention discloses a tablet forming device with a drug powder adding structure, which relates to the field of drug processing technology, including a working frame, the front and rear sides of the bottom end of the working frame are both equipped with mounting support plates, a switching support mechanism, the switching support mechanism includes a forming notch and a conversion cylinder, the conversion cylinder is movably installed at the bottom end of the inner cavity of the working frame, and the outer periphery of the conversion cylinder is provided with forming notches. The present invention triggers a stabilizing processing mechanism and a feeding mechanism by starting a compacting mechanism, and when the compacting mechanism is used for processing and stamping, the drug material can be extruded and formed, and the extrusion end is rotated while extruding to increase the extrusion force during extrusion, and the probability of forming during extrusion is increased, so as to avoid the uneven scattering of the drug material during the processing and stamping process, resulting in uneven pressure in the final compaction process and failure to form in the later stage.

The present invention belongs to the field of geomechanical model test, and provides a fully automatic test device and method for similar materials in geomechanical model test, including an intelligent multi-stage batching and uniformity detection system capable of realizing multi-stage mixing batching, real-time monitoring of the mixing uniformity inside the batching bin to ensure uniform batching, an adaptive servo pressurization system capable of adaptively adjusting the specimen parameters according to the input sample parameters during the pressing process to meet the sample production requirements, an anti-adhesion multi-specification molding and pressure equalization detection system capable of adapting to the production of samples of various forms and specifications, and real-time detection of whether there are cavity defects inside the specimen during the pressing process, and a detachable automatic drying and water content discreteness verification system capable of flexibly selecting a drying device according to the sample preparation requirements and automatically calculating the water content mean of the batch of samples during the drying process. The present invention can ensure the uniformity of the same group of specimens, improve the efficiency and accuracy of the proportioning test, and can effectively and reasonably evaluate and detect the specimens.

The invention discloses a self-rotating cold air cooling milling cutter for dry cutting, which relates to the technical field of machine tool cutters and comprises a milling cutter disc, a cutter body, a turbofan, a wheel set, a tail pipe, a flow guide cover and a vortex generator. The milling cutter disc is provided with an internal runner, and the cutter body is provided with a first center hole. And the turbofan and the cutter body rotate synchronously. The wheel set comprises a rotor and a reverse turbine, the rotor and the cutter body rotate synchronously, and the reverse turbine is rotationally connected with the cutter body. And the rotor and the blade of the reverse turbine are opposite in rotating direction, and the rotor and the turbofan are the same in rotating direction. The tail pipe is fixedly connected with the cutter body and provided with a blind hole facing the cutter body. The end, close to the cutter body, of the blind hole is provided with an air inlet side hole, and the end, away from the cutter body, of the blind hole is provided with an air outlet side hole. The flow guide cover is fixedly connected with the tail pipe, and airflow is guided into the blind hole through the air inlet side hole. The vortex generator is fixedly connected with the cutter body and extends into the blind hole. The vortex generator is provided with a second center hole. The milling cutter disclosed by the invention can obtain low-temperature airflow by utilizing kinetic energy of self rotation, and realizes cooling of a cutting processing area through the low-temperature airflow.

The invention discloses a preparation method of a metal hollow sphere, which comprises the following steps of: 1, uniformly mixing two stages of non-spherical metal powder with different powder granularities as raw materials, and pressing to obtain a cubic or cylindrical green body; secondly, non-spherical metal powder with the fine powder granularity is adopted for preparing powder slurry, and the powder slurry is sprayed on the surface of the cubic or cylindrical green body to obtain a sprayed green body; 3, sintering the sprayed green body at high temperature to obtain a sintered green body; and fourthly, the sintered blank is placed in electrostatic suspension equipment to be subjected to high-temperature melting and heat preservation, and the metal hollow ball is obtained after rapid cooling. The porosity of the metal hollow sphere is regulated and controlled by selecting the non-spherical metal powder with the two-level granularity as the raw material, container-free and crucible-free near-net forming is achieved through the electrostatic suspension method, the metal hollow sphere with the hollow interior and the solid exterior and the sphere wall being a compact shell is obtained, the blank of the size of the metal hollow sphere from the micro-nano level to several millimeters is filled, and the metal hollow sphere is suitable for large-scale production. The material is suitable for the fields of energy absorption, damping vibration attenuation, explosion prevention, flame retardance, heat insulation and the like.