7950results about "Ceramic shaping apparatus" patented technology

The present invention relates to an artificial marble including a first composition including a first binder resin, a first inorganic particle, and first inorganic powder; and a second composition including a second binder resin, a second inorganic particle, and second inorganic powder, wherein at least one surface of the artificial marble includes at least two regions among a region provided with the first composition, a region provided with the second composition, and a region where the first composition and the second composition are mixed, and at least one of a surface roughness, a scratch resistance, and a thickness in each of the at least two regions is different, and also relates to a method for manufacturing the artificial marble.

Disclosed in the present invention is a ceramic green body machining device, comprising a sedimentation tank, a supporting platform, a height-adjustment platform and a cleaning platform. According to the present invention, during use, when a counterweight plate is close to a distal end of a sweeping frame and a liquid dispensing chamber is fully loaded, the weight of a press block area exceeds the torsion of a torsion spring, and the liquid dispensing chamber and the press block would fall down from an accommodation groove until the liquid dispensing chamber and the press block are perpendicular to the accommodation groove; in this case, a cleaning liquid is sprayed from one side of the liquid dispensing chamber by means of a second spray head, thereby effectively rinsing an area to which a first spray head cannot spray; a polishing sand layer on an arc-shaped plate would be attached to a rough area on the surface of a ceramic green body and rotates along with the rotation of a mounting arm to rotationally grind the rough area, thereby improving ceramic green body manufacturing effects; and when a cooling liquid flows down from a contact area between the polishing sand layer and the surface of the ceramic green body, the cooling liquid cools the surface of the ceramic green body. The present invention is conducive to the discharging of dust generated in the grinding process and avoids cracking caused by excessive local drying of the surface of the ceramic green body.

The invention provides an intelligent maintenance method and system for the wall of a squat silo, and the method comprises the steps: applying controllable environment parameters to a concrete test block group with the same proportion through an environment simulation device, and obtaining test block deformation data, moisture content data and stress data; performing time sequence correlation mapping on the test block deformation data, the moisture content data and the stress data and environmental parameters to obtain a maintenance decision data set; acquiring a real-time environment vector through a sensor network deployed on the site of the squat silo; inputting the real-time environment vector into a maintenance decision model, and generating a spraying control instruction by matching the maintenance decision data set; and driving a spraying system to execute operation according to the spraying control instruction, and dynamically correcting spraying parameters based on moisture monitoring data. According to the method, through data-driven intelligent maintenance decision and dynamic closed-loop control, the crack risk of the wall of the squat silo is remarkably reduced, meanwhile, water resource consumption is reduced, and double breakthrough of maintenance quality and resource efficiency is achieved.

The invention discloses a concrete 3D printing path optimization method and system based on reinforcement learning, and the method comprises the following steps: representing a to-be-printed geometric model as a graphic structure composed of nodes and edges, each node being a specific position in a three-dimensional space on a printing surface, and the edge representing a feasible moving path of a printing head between the nodes; performing dynamic optimization on the movement of the spray head through a Q-learning algorithm, performing iterative calculation on a Q value, and completing dynamic adjustment on a printing path on the basis of an instant reward to obtain an optimal printing path with the minimum movement distance, the minimum sharp turn frequency and the minimum start-stop frequency; the optimal printing path data is converted into a standard G code, and the 3D printer is controlled to execute the optimal printing path based on the standard G code; by combining the solving process of the optimal Q value in the Q-learning algorithm and the construction requirements of concrete 3D printing path planning, the accurate optimal printing path planning can be efficiently completed through the self-learning-self-evolution algorithm advantages of the reinforcement learning model.

The objective of the present invention is to provide a method for preparing cremation crystals, the method using phosphoric acid extracted from cremated remains as a catalyst in the heat treatment of ashes so that transparent cremation crystals can be prepared only with components of skeletal remains derived from a single individual, and using only skeletal remains of a single individual through the control of the classification ratio of raw bone powder and phosphorus-extracted bone powder, and the like, so that the amount of phosphorus in the crystals is controlled, thereby enabling cremation crystals transparency to be controlled, and thus aesthetic requirements of consumers are satisfied and use as various kinds of jewelry is also facilitated.

The present invention discloses a crack-resistant ultra-high performance concrete (UHPC) for underground engineering in water-rich strata, preparation method, and application thereof, belonging to the technical field of building materials. The concrete is prepared from the following raw materials in parts by weight: 550-650 parts of cement, 140-180 parts of fly ash, 120-150 parts of silica fume, 200-300 parts of calcined shield tunnel slag, 30-50 parts of micron-scale magnesium oxide, 30-50 parts of nano-scale magnesium oxide, 30-50 parts of rheology-modifying material, 800-1000 parts of lightweight aggregate, 4-8 parts of water reducer, and 50-200 parts of water. The rheology-modifying material has a fluidity ratio of 106%. The present invention incorporates calcined shield tunnel slag, micron / nano-scale magnesium oxide, and lightweight aggregate into the UHPC, which effectively suppresses shrinkage and reduces crack formation.

Material delivery systems as well as systems and methods relating thereto are disclosed. In an embodiment, the material delivery system includes a tank to hold water therein. In addition, the material delivery system includes a hopper to hold dry ingredients of the extrudable building material therein. Further, the material delivery system includes a mixing unit to receive water from the tank and dry ingredients from the hopper. The mixing unit includes an agitator to mix the water and the dry ingredients together to form the extrudable building material. Still further, the material delivery system includes a controller coupled to the agitator that is to: measure a load imparted to the agitator by the extrudable building material, add additional water to the mixing unit when the load is above a first threshold, and add additional dry ingredients to the mixing unit when the load is below a second threshold.

The present application provides a 3D printing method, device, 3D printer and computer equipment, wherein the method includes: obtaining a collection of slice images corresponding to a three-dimensional model to be printed; determining the cross-sectional information of the cross-section in each layer of slice images in the collection of slice images, and based on the cross-sectional information, calculating the printing difficulty value corresponding to each layer of slice images in the collection of slice images; based on the printing difficulty value, respectively determining the printing parameters corresponding to each layer of slice images, and determining the printing operation based on the printing parameters, so as to print the three-dimensional model based on the printing operation. In an embodiment of the present application, during the printing process, the printing parameters can be adaptively adjusted as the printing difficulty value of the slice images changes, thereby improving the printing success rate and printing quality, and at the same time improving the printing efficiency.

According to the prefabricated pier column assembly type steam curing cover, the segment steam curing cover can be assembled along with the length change of the pier column, and the assembly type curing cover is high in curing efficiency, small in heat loss, convenient to assemble and disassemble, capable of being flexibly produced in an open-air factory or a construction site and high in adaptability. And meanwhile, the concrete prefabricated part also has the advantages of greatly improving the environmental conditions of a construction site, saving raw materials, accelerating the construction speed, being reusable and the like. The method has good economic benefits, scientific and technological benefits and social benefits.

The invention relates to the field of concrete forming, in particular to concrete prefabricated part pouring and vibrating equipment for assembled small and medium-sized culvert gates, which comprises a vibrating table, the vibrating table is composed of a base frame at the lower part and a table plate at the upper part, and the table plate is provided with a limiting mechanism for clamping the bending angle position of a mold. According to the directional pushing type vibrating device, the L-shaped clamping plate is matched with the adjusting assembly, the bent corner of the mold is clamped and fixed, relative sliding of the mold and the table plate in the vibrating process is effectively avoided, it is ensured that vibration energy is efficiently transmitted into concrete, and the vibration efficiency is improved. The adjusting assembly can adjust the position of the L-shaped clamping plate in a rough adjustment and fine adjustment combined mode so as to accurately adapt to molds of different sizes, energy generated by the vibration motor is directly transmitted to the L-shaped clamping plate through the linkage piece, the energy is further transmitted to the bent corner of the mold, and targeted vibration on the area is achieved.

The invention relates to the technical field of sole processing, in particular to a sole composite processing method, which comprises the following steps: according to the rigidity requirement of an arch support area, preparing high-density slurry in which silicon nitride ceramic powder accounts for 30-40%, forming # imgabs0 # crystal phase through microwave-assisted sintering, and controlling the porosity to be 10-20%; according to the energy rebound requirement of the forefoot buffer area, graphene oxide / carboxymethyl cellulose aerogel powder is added into the slurry until the concentration is 25%, and the porosity is increased to 40-60% by combining the honeycomb porous network design; a nano silicon dioxide reinforcing agent is introduced into a wear-resistant area of the heel to 15%, a diamond-like carbon coating is formed through plasma surface treatment, and the porosity is limited to be 5-15%. According to the invention, silane is encapsulated by adopting polyurea microcapsules, and is released only when the material is damaged, so that dynamic self-repairing is realized, the shoe sole is endowed with dynamic repairing capability, and the service life is prolonged.

Globally our environment comprises structures built to perform a meet different requirements including residential, commercial, retail, recreational and service infrastructure. Whilst, millions of tons of construction materials are deployed annually the quality control procedures in many instances have not changed to reflect today's demands. Accordingly, it would be beneficial to provide construction companies, engineering companies, infrastructure owners, regulators, etc. with means to automated testing / characterization of construction materials during at least one of its manufacture, deployment in construction and subsequent infrastructure life. It would be further beneficial for such automated methods to exploit self-contained data acquisition / logging modules allowing them to be employed with ease at the different points in the life cycle of a construction material and / or construction project.

The invention relates to the technical field of water permeable brick maintenance, in particular to a building water permeable brick production and maintenance device which comprises a bottom plate and a maintenance box, the maintenance box is fixed to the top of the bottom plate, an adjusting mechanism is arranged at the top of the bottom plate, a maintenance mechanism is arranged in the maintenance box, and the adjusting mechanism comprises a supporting seat fixedly arranged at the top of the bottom plate; a motor is mounted in the supporting seat, a circular groove is formed in the top of the supporting seat, a water pump is started, then water in the curing box enters a spray head from a water pipe, and then the water is sprayed to the water permeable bricks on the top of the conveying belt from the spray head, so that water spraying curing of the water permeable bricks is facilitated; the sprayed water flows to the bottom of the curing box from the first water leakage hole and the second water leakage hole and is filtered by the filter screen, and the filtered water enters the spray head again through the water pipe to be sprayed out under the action of the water pump, so that the cyclic utilization of the water is favorably realized.

The disclosure discloses a polycrystalline diamond composite sheet having a continuous gradient transition layer and a 3D printing preparation method thereof. The polycrystalline diamond composite sheet consists of a polycrystalline diamond layer, a continuous gradient transition layer, and a cemented carbide substrate from top to bottom, in which the continuous gradient transition layer consists of diamond and cemented carbide. Along a direction from the cemented carbide substrate to the polycrystalline diamond layer, a content of the cemented carbide in the continuous gradient transition layer decreases from 100% to 0, and a content of the diamond increases from 0 to 100%. By designing and combining the continuous gradient transition layer with 3D printing technology, the disclosure realizes a continuous change in the two materials of diamond and cemented carbide, thereby eliminating the sudden change interface of the materials inside the diamond composite sheet.

A waterfront soft soil area landscape pier precast pile comprises a concrete precast pile, the concrete precast pile comprises a pile top, a pile body and a pile tip, a steel reinforcement framework is arranged in the concrete precast pile, a drainage system and a grouting reinforcement system are arranged in the concrete precast pile, and the waterfront soft soil area landscape pier precast pile comprises a grouting pipe which longitudinally penetrates through the pile body from the pile top to the position above the pile tip. The top end of the grouting pipe extends out of the surface of the pile top to facilitate later grouting, the surface of the grouting pipe is connected with a grouting pipe branch pipe, the grouting pipe branch pipe extends out of the surface of the pile body in the radial direction, an included angle of 10-20 degrees is downwards formed between the grouting pipe branch pipe and the surface of the grouting pipe, and grout is sprayed along the inclined angle to form a mushroom-shaped reinforcing area to completely wrap the lower middle portion of the pile body. And the reinforcing area and the pile body form an integral collaborative stress body, so that the pile end resistance is further improved, and meanwhile, continuous consolidation settlement caused by excess pore water pressure is inhibited.

The invention relates to the technical field of bearings, and discloses a ceramic angular contact ball bearing with high bearing capacity, the ceramic angular contact ball bearing comprises an outer ring, an inner ring, a rolling body, a retainer and an oil storage cavity, the outer ring is of a cylindrical structure, and the inner surface of the outer ring is in contact with the rolling body; the inner ring is positioned inside the outer ring, and the outer surface of the inner ring is contacted with the rolling body; and the rolling bodies are a plurality of spherical ceramic elements which are fixed and separated by the retainer. By optimizing the arrangement mode and material selection of the rolling bodies, the bearing has higher bearing capacity and anti-overturning performance under the high-load condition; the heat dissipation through holes are formed in the retainer, so that the heat dissipation performance of the bearing in the running process is remarkably improved, and the bearing failure risk caused by overheating is reduced; through the design of the oil storage cavity and the oil outlet micropores matched with the oil storage cavity, uniform supply of lubricating oil is achieved, and friction loss between the rolling body and the inner ring and the outer ring is reduced.

A micro gas turbine engine may include a single-piece rotor having a compressor, a turbine, and a shaft manufactured from an additive manufacturing process. The compressor, turbine, and shaft are a single uniform piece and not separately joined together. The micro gas turbine engine may further include a ceramic cover having built in fuel injectors and stator blades for the compressor. The micro gas turbine engine may further include a inner combustor lining having built in stator blades for the turbine.

The invention belongs to the related technical field of industrial robots, and discloses a control method and system of a crawler-type 3D printing robot capable of autonomously and movably printing. The method comprises the following steps that the current position and the target position of the 3D printing robot are obtained, the current motion path of the 3D printing robot moving from the current position to the target position is planned, and the 3D printing robot moves to the target position according to the planned motion path; acquiring a real-time relative pose between the head of the 3D printing robot and a preset marker, comparing the real-time relative pose with a preset relative pose, and if the real-time relative pose is inconsistent with the preset relative pose, planning a pose adjustment path of the head and adjusting the pose of the head according to the path until the real-time relative pose is consistent with the preset relative pose; and the 3D printing robot carries out printing at the current position and posture. By means of the 3D printing robot, the problem that the 3D printing robot cannot move autonomously and adjust the pose in a self-adaptive mode is solved.

The invention relates to an integral microwave-assisted additive manufacturing device and method. The integral microwave-assisted additive manufacturing device comprises a microwave high-temperature cavity, a microwave leakage-proof outer cavity, a microwave element, a high-temperature thermocouple, a high-temperature supporting mechanism and a servo driving mechanism. The microwave auxiliary device is fixed to the supporting frame, and the servo driving mechanism drives the forming base plate to move synchronously through the high-temperature supporting mechanism. According to the device and the method, an additive manufacturing component can autonomously absorb microwaves in a forming high-temperature state, microwave energy is converted into heat energy, rapid temperature rising of the material is achieved, meanwhile, under the synergistic effect of microwave coupling external heat sources, synchronous preheating and slow cooling inside and outside the material are achieved, thermal stress in the forming process is reduced, and therefore material cracking is effectively restrained. The heating temperature and the heating rate are regulated and controlled by controlling the microwave power, so that on-demand preparation of the microstructure of the material is realized; the microwave plasma heat effect and the electric field enhancement effect in the microwave heating process can promote densification of a formed component, and the overall performance of the material is remarkably improved.

The invention relates to the field of architectural ceramics, and discloses a curved marble tile and a hot bending process thereof.The curved marble tile comprises a green body layer, and the green body layer is prepared from, by mass, 64-69% of SiO2, 18-22% of Al2O3, 0.3-0.8% of Fe2O3, 0-1% of CaO, 0-1.2% of MgO, 3-4% of K2O, 2-4% of Na2O, 0-0.5% of TiO2 and 4-6% of L.O.I; 0.1-10% of aluminum dihydrogen phosphate is additionally added into the preparation raw materials of the green body layer. The aluminum dihydrogen phosphate is added into the raw materials of the green body layer, the proportion range of oxides in the raw materials for preparing the green body layer is regulated and controlled, the silicon content is properly reduced, the aluminum content is increased, and the contents of calcium, magnesium and potassium in the formula are increased, so that a relatively low firing environment temperature can be obtained; the green body adopted in the scheme does not crack in the hot bending and firing process.

The invention provides a design method of a freeze-thaw sensitive composite material for 3D printing. The design method comprises the following steps: S1, selecting a matrix material with differentiated heat conductivity coefficient, thermal expansion coefficient and specific heat capacity; s2, doping microcapsule phase change materials with different phase change temperatures and latent heat values into the matrix material; s3, reinforced fibers are selectively added, and the cementation effect between the base materials is changed; s4, 3D printing process parameters are determined, wherein the 3D printing process parameters comprise the layer thickness, the filling density and the temperature; s5, permutation and combination are performed according to different base materials, microcapsule phase change materials and reinforced fibers and proportions thereof, corresponding freeze-thaw sensitive composite materials are manufactured through 3D printing with different process parameters, corresponding physical and mechanical property tests are performed, a freeze-thaw sensitive-process-performance database is established according to physical and mechanical property test results, and the freeze-thaw sensitive composite material is obtained. And obtaining a mapping relationship among different parameters for subsequent further material development.

The present disclosure relates to embodiments of a method for manufacturing a ceramic material comprising the steps of (a) homogenizing aluminum oxide, niobium pentoxide and solvent; (b) ultrasonicating the blend obtained in step (a); (c) adding an aliquot of the prepared suspension to the empty cavity of a mold, particularly between the polymeric mold and the metal mold; (d) immersing the mold into a coolant liquid-containing bath for sufficient time to ensure that all parts are completely frozen; (e) removing the ceramic body from the mold; (f) removing the solidified phase by means of sublimation hence obtaining a green tube; and (g) sintering the green tube, so as to obtain a solid structure. The present disclosure further relates to embodiments of a ceramic material and its use to manufacture a microfiltration membrane and / or a membrane support for fluid separation.

The invention discloses an ultrahigh-strength prestressed concrete pipe pile and a preparation method, and relates to the technical field of building materials. The ultrahigh-strength prestressed concrete pipe pile comprises a core layer which is composed of 1.0%-2.0% by volume of chopped basalt fiber reinforced concrete, the fiber length is 8-12 mm, the diameter is 15-20 microns, and the compressive strength is larger than or equal to 130 MPa; the transition layer is composed of hybrid fiber reinforced concrete with the volume fraction of 3.0%-4.0%, steel fibers account for 60%-75%, polyethylene fibers account for 25%-40%, the length-diameter ratio of the steel fibers is 50-80, and the tensile strength is larger than or equal to 1200 MPa. Through gradient fiber reinforced structure design and preparation process innovation, the mechanical property, the production efficiency and the environmental friendliness of the prestressed concrete pipe pile are synergistically improved. Firstly, in the aspect of mechanical properties, the compressive strength is made to break through 130 MPa through the synergistic effect of the core layer basalt fiber and the high-activity superfine slag powder and is improved by 30% or above compared with a traditional C100 pipe pile, and meanwhile the shear strength is improved to 18 MPa or above through a transition layer steel-polyethylene hybrid fiber system.

Inorganic oxide particles having a D50 of 5.5-9.0 μm and a pressure loss of 1.75-2.81 kPa in air permeation at a pressure of 12 kPa.

The invention relates to the field of ceramic machining, in particular to an improved fettling machine. An existing fettling machine has the defects that in the fettling process, a green body is prone to displacement, the fettling effect is not good enough, workers need to fettle the bottle opening of the green body, time and labor are wasted, and the fettling efficiency is low. According to the technical scheme, the improved fettling machine comprises a base and the like; the base is fixedly connected with a supporting frame, the lower portion of the supporting frame is fixedly connected with a mounting plate, the mounting plate is rotationally connected with a rotating disc, a blank is placed on the top of the rotating disc, and the lower portion of the supporting frame is fixedly connected with a servo motor. A worker starts the servo motor, the servo motor drives the rotating disc to drive the green body to rotate, the two sets of rolling wheels limit the green body, the fettling knife fettles the green body, the two sets of rolling wheels limit the green body, the green body can be more stable in the fettling process, and therefore the fettling effect on the green body is better.

The invention belongs to the technical field of ceramic manufacturing, and relates to a forming method of a ceramic sheet, which comprises the following steps: alternately laying ceramic powder layers and spacing layers, and then carrying out compression molding to obtain a molded blank; sintering the molded blank, and performing heat treatment under an oxygen-containing atmosphere condition to oxidize and decompose the spacing layer to obtain a ceramic thin plate; the material of the spacer layer is stable under a sintering condition. Through the arrangement of the spacing layers, multiple ceramic powder layers can be stacked and then subjected to compression molding, multiple stacked molded blanks form a thicker whole, higher strength and bending resistance are achieved in the subsequent treatment process, and cracking and warping are reduced; and then, the spacing layer can be oxidized and decomposed through simple heat treatment, so that the stacked whole body is naturally separated into independent ceramic thin plates, and the problem that the ceramic thin plates are easy to break or warp when being prepared in the prior art is solved.

Support structures are used in certain additive fabrication processes to permit fabrication of a greater range of object geometries. For additive fabrication processes with materials that are subsequently sintered into a final part, an interface layer is formed between the object and support in order to inhibit bonding between adjacent surfaces of the support structure and the object during sintering.

The invention discloses a prefabricated box girder reinforcement cage forming method suitable for factory manufacturing, which is characterized in that a box girder reinforcement cage obtained by assembling an existing closed hoop is improved into a structure of a bottom web double-U mesh and a top plate double-layer mesh according to a'double-U + top plate 'forming and assembling thought; each type of reinforcing mesh can be automatically produced by bending, binding and welding equipment at the same time, the mesh is moved to a reinforcing steel bar framework assembling area through a special lifting appliance to form a box girder reinforcing steel bar framework, and meanwhile prestressed pipeline strand penetrating installation is carried out. The construction quality problems of strand pulling displacement, deformation damage and the like of the prestressed pipeline are solved, the subsequent prestressed tension safety quality is guaranteed, and the service life of the prefabricated PC box girder is prolonged.

According to the low-expansion ceramic fiber board and the preparation method thereof, high-purity aluminum silicate fibers and refined cordierite powder are compounded, and the nanoscale permeation effect of ammonia type silica sol is combined, so that the fibers and the powder form a three-dimensional network bonding structure, and the thermal expansion coefficient is reduced; the wettability of the combination of the fibers and the powder is remarkably improved by a pre-dispersion process of the cationic starch, and the block mass rate is reduced; the vacuum-assisted compression molding and the gradient calcining process are synergistic, so that the density uniformity of the product is improved, and high-temperature cracking is avoided.

The invention relates to the technical field of structure construction, and particularly discloses a reinforced concrete structure construction method which comprises the following steps: S1, performing high-temperature and high-pressure steam curing reaction in a mold to produce an autoclaved aerated concrete slab structure main body, and reserving a positioning assembly and a butt joint assembly mounting position on the autoclaved aerated concrete slab structure main body; two positioning assemblies are installed on one side of the autoclaved aerated concrete slab structure body, and two butt joint assemblies matched with the positioning assemblies are installed on the side, away from the butt joint assemblies, of the autoclaved aerated concrete slab structure body; s2, a base layer of the target construction position is cleaned, and keels are installed on the base layer according to preset intervals; according to the autoclaved aerated concrete slab structure, the autoclaved aerated concrete slab structure main bodies are fixed to one side of the keel, meanwhile, connection between the adjacent autoclaved aerated concrete slab structure main bodies is achieved, continuous structure construction can be carried out, arrangement of a plurality of external extension structures is reduced, carrying and operation in construction are facilitated, the assembly degree is improved, and the construction progress is accelerated.