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High-precision and fast-response ultrahigh pressure adjusting method based on real-time feedback control principle
PendingCN119635794Auniform pressureclosely arrangedAuxillary shaping apparatusUltra high pressureData acquisition
The invention relates to a high-precision and fast-response ultrahigh pressure adjusting method based on a real-time feedback control principle, and belongs to the technical field of ceramic manufacturing. The high-precision and fast-response ultrahigh pressure adjusting method based on the real-time feedback control principle comprises the steps that after a pressure adjusting device is started, a target pressure value is set; a high-precision pressure sensor is used for monitoring the pressure value in the forming process in real time; acquiring data of the pressure sensor in real time through a data acquisition system, and performing filtering and correction processing; the controller calculates the deviation between the current pressure and the set pressure according to the set pressure value and the pressure value collected in real time; by means of the real-time feedback control technology, high-precision adjustment of pressure is achieved, it is ensured that ceramic powder is subjected to uniform pressure in all directions, particles are tightly arranged, the forming density is improved, meanwhile, due to the fact that the pressure is applied in the same direction, the powder particles are subjected to the same compression force in all directions, and it is ensured that ceramic blanks are uniform in density and regular in shape.
Owner:NANJING TECH UNIV
Magnesia spinel brick for refining new energy motor silicon steel and preparation method thereof
PendingCN119569424Aeasy to useIncrease usage intensityProcess efficiency improvementNew energyElectric machine
The invention discloses a magnesia spinel brick for new energy motor silicon steel refining and a preparation method thereof, 75-80 parts of macrocrystalline magnesia material, 10-15 parts of zirconium material and 5-8 parts of composite additive are used as raw materials, and an additional binding agent accounts for 2.5-3.5% of the total weight of the raw materials; the magnesium spinel brick is prepared through the steps of burdening, mixing, vibration pressure forming, drying and the like, in a high-temperature use environment, an in-situ reaction is carried out to generate a main product which is a complex-phase solid solution of MgAlON and Al2OC-AlNss, and the magnesium spinel brick not only has excellent corrosion resistance of nitride, but also has the advantages of high thermal conductivity, low thermal expansion coefficient, good impact resistance and the like of carbide, and is suitable for industrial production. The use performance of the magnesia spinel brick is obviously improved, and meanwhile, the porosity is reduced; the magnesium spinel brick is simple in production process, few in used raw materials and simple in technological process, the magnesium spinel brick which is high in strength, free of inclusion, stable in thermal shock performance and the like can be produced, the using effect is more excellent, and production of silicon steel for new energy motors is met.
Owner:LUOYANG LIER FUNCTIONAL MATERIAL CO LTD
Iron-silicon-aluminum magnetic powder core and preparation method and application thereof
PendingCN119446700AHigh molding densityImprove DC Superposition CharacteristicsTransformers/inductances detailsInorganic material magnetismALUMINUM PHOSPHATESilicon dioxide
The invention provides an iron-silicon-aluminum magnetic powder core and a preparation method and application thereof. The Fe-Si-Al magnetic powder core comprises a Fe-Si-Al magnetic powder base body and a coating layer coating the surface of Fe-Si-Al magnetic powder. And the coating layer comprises silicon dioxide and aluminum phosphate. According to the Fe-Si-Al magnetic powder core provided by the invention, the silicon dioxide and the aluminum phosphate are used as the mixed insulating coating layer, so that the resistivity of the Fe-Si-Al magnetic powder core is increased, the eddy-current loss among particles is effectively reduced, meanwhile, the maximum forming density of the material is ensured, and a relatively high saturation magnetic flux density Bs is obtained, so that a high direct-current superposition characteristic is obtained; and the aim of giving consideration to low loss and high direct current superposition characteristics is fulfilled.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD +1
Production technology of high-density knitted fabrics
ActiveCN116536865BHigh molding densityImprove molding stabilityWeft knittingWarp knittingYarnPolymer science
The present application relates to a production process of high-density knitted fabrics, and to the technical field of fabric production processes, which includes the following production processes: skimming and absorption: rubbing the yarn to make the impurities and exposed wool on the surface of the yarn fall off; absorbing the impurities and exposed wool that have fallen on the yarn; yarn straightening: roller-pressing the yarn to reduce the exposed wool remaining on the yarn; continuously absorbing the exposed wool that has fallen on the yarn; sizing: passing the yarn through the sizing liquid through a yarn guide device, and the yarn guide device is used to guide the displacement of the yarn and collect the wool that has fallen on the yarn in a centralized manner; weaving: heat-drying the yarn after sizing, and then weaving the yarn into grey cloth. The present application has the effect of ensuring the fluidity of the sizing liquid, thereby helping to improve the sizing performance of the yarn and the forming density and forming quality of the grey cloth.
Owner:CHANGSHU HUAKUN KNITTING CO LTD
A pressing die for large bore inverted cone explosive grain
ActiveCN117923991Bsuppress realizationRealize two-way force suppressionExplosive working-up apparatusMechanical engineeringMold removal
The present application relates to a kind of pressing mould for large aperture band inverted cone explosive grain, including bottom punch, the bottom of the bottom punch is provided with ejector rod, the bottom punch is installed at the top end of ejector rod, the outside of the ejector rod is provided with limit sleeve, the top of the limit sleeve is provided with forming die sleeve, the middle part of the forming die sleeve is provided with forming cavity, and the forming cavity is used to press and form the grain workpiece, the inside of the forming cavity is provided with top punch for material pressing, and material is pressed and formed inside forming cavity by top punch and bottom punch, when pressing, the top of top punch is driven by driving force, and the top of the forming die sleeve can be installed with demoulding sleeve;It is difficult to eject for the grain column with conical structure in the prior art by using reverse ejecting mode, it is difficult to assemble due to the large size of the mould, and the grain column is easily damaged by sudden drop and collision with punch.
Owner:ANHUI DONGFENG MACHINERY & ELECTRONICS TECHNCO
High-performance tc4 / fe-based amorphous alloy composite material suitable for additive manufacturing and preparation method thereof
PendingCN122406065ABreaking through the upper limit of mechanical propertiesMeet demanding needsAlloy compositeTitanium alloy
Owner:NANJING TECH UNIV
Coupling inductor, manufacturing method of coupling inductor and power supply
PendingCN119274931AHigh molding densityImprove pressure resistanceTransformers/inductances coils/windings/connectionsTransformers/inductances magnetic coresStructural engineeringCoupling inductor
The invention belongs to the technical field of inductance devices, and discloses a coupling inductor, a manufacturing method of the coupling inductor and a power supply. The coupling inductor comprises an E-shaped iron core structure, a coil assembly and an I-shaped iron core structure. The number of the E-shaped iron core structures is at least two, the at least two E-shaped iron core structures are arranged in a stacked mode, each E-shaped iron core structure comprises a magnetic core, each magnetic core is provided with a middle column in a protruding mode and two limiting bosses arranged on the two sides of the middle column in a spaced mode, and a containing space is formed by gaps between the middle columns and the limiting bosses; the coil assembly is contained in the containing space and comprises an inner coil and an outer coil, the inner coil sleeves and wraps the middle column, the outer coil sleeves the inner coil and is located between the two limiting bosses, and the bent ends of the inner coil and the outer coil are both exposed out of the containing space; and the I-shaped iron core structure is arranged on the top surface of the E-shaped iron core structure at the top. According to the coupling inductor, the voltage withstanding degree of the whole device is improved, grinding treatment is not needed, and short circuit is avoided.
Owner:SHENZHEN HUALUO ELECTRONICS CO LTD
A pressing device and pressing method for a compact with internal cooling holes
Owner:ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
Preparation method of forging-additive composite molding track shoe
PendingCN119319377AImprove processing efficiencyReduce repair costsAdditive manufacturing apparatusArc welding apparatusManufacturing technologySingle plate
The invention relates to a preparation method of a forging-additive composite molding track shoe, a single-plate single-pin track is divided into a forging part and an electric arc additive part, the forging part comprises a track shoe body and forging induction teeth, and the forging induction teeth are of 2 / 3 structures of the bottoms of the induction teeth; the electric arc additive part is of an induced tooth top 1 / 3 structure; according to the method, the advantages of high machining efficiency and low cost of the forging process and the advantages of high flexibility degree and high forming density of the electric arc additive manufacturing technology are organically combined, and efficient and low-cost composite manufacturing of the track shoe is achieved. By the adoption of the method, the technical defects and problems existing in an original single forming method can be overcome, die damage caused by large-fall forging of the induction tooth part is reduced, the problem that mold filling is difficult at the position of the induction tooth part is fundamentally solved, the product quality consistency and the qualification rate are guaranteed, the material utilization rate is increased, and the die repairing cost is reduced.
Owner:INNER MONGOLIA FIRST MASCH GRP CORP CO LTD
Production method for continuous compression molding of flexible self-exhaust frame ceramic by ceramic press
The invention discloses a continuous pressing forming flexible self-exhaust frame of a ceramic press, which is applied to a super-large-scale ceramic thick blank forming process and comprises a forming flexible self-exhaust frame, a forming press structure, a forming blank butt joint mechanism, a flexible self-exhaust frame dust cleaning structure and a blank distribution structure, particularly, the forming boss and the self-exhaust frame are provided with exhaust channels in various forms, the effect of strengthening and compacting powder around the blank in the pressing forming process is achieved, meanwhile, the exhaust filter screen prevents normal powder particles from passing but allows gas to pass, the gas is exhausted through the exhaust channels composed of the forming soft rubber strip and the exhaust structure, and the forming effect is good. Therefore, gas on the upper surface and the periphery of the blank is fully exhausted, the compactness of the blank is crucial, the compactness of powder on the periphery of the green brick is guaranteed, the compression molding quality is greatly improved, and finally, the demolding efficiency and stability of the large-plate ceramic tile blank are greatly improved through flexible demolding of the molding flexible self-exhaust frame.
Owner:SHENZHEN HARMONY INNOVATION TECH CO LTD
A method and device for forming an absorbent core
ActiveCN113662749BInhibit aggregationHigh molding densityAbsorbent padsBaby linensMechanical engineeringMold removal
The present invention discloses a molding method and equipment for an absorbent core, wherein a molding area and a demolding area are arranged on the outer peripheral surface of a molding drum, and each molding assembly installed on the molding drum rotates independently relative to the core shaft of the molding drum; after the molding assembly enters the molding area, adjacent molding assemblies are closely connected to mold the absorbent core; after the molding assembly exits the molding area, the molding assembly accelerates rotation, adjacent molding assemblies are separated, and demolding and transfer of the absorbent core are performed. The equipment comprises a molding drum and a plurality of molding assemblies installed on the molding drum, and each molding assembly rotates independently relative to the core shaft of the molding drum; a molding area and a demolding area are arranged on the outer peripheral surface of the molding drum, and the rotation speed of each molding assembly in the molding area is less than the rotation speed in the demolding area. The present invention can effectively improve the uniformity of the molding density and the content of polymer materials of the absorbent core, thereby improving the molding quality of the product.
Owner:GUANGZHOU XINGSHI EQUIPS