2055 results about "Materials preparation" patented technology

The invention discloses preheating-free welding maritime work steel with excellent low-temperature toughness and a preparation method of the preheating-free welding maritime work steel, and belongs to the field of steel and iron material preparation. The produced steel plate has good comprehensive mechanical properties through alloy component-secondary rolling-controlled cooling process coupling design, the problem that the strength, plasticity, low-temperature toughness and preheating-free post-welding performance of the steel plate are difficult to match and harmonize is solved, the steel plate has ultrahigh-strength plasticity, excellent low-temperature toughness and excellent Z-direction performance, and room-temperature preheating-free welding can be achieved.

The invention relates to the technical field of building thermal insulation material preparation and discloses a building thermal insulation material preparation device and method.The building thermal insulation material preparation device comprises a portal frame, a mixing barrel is fixed to the inner side of the portal frame through bolts, a middle filter plate is fixed to the inner wall of the mixing barrel through bolts, and an air cylinder is fixed to the top of the portal frame; according to the preparation device and the preparation method of the building thermal insulation material, after mortar raw materials are fed into the mixing barrel through the hopper, the air cylinder and the motor are started, and then the mortar raw materials are fed into the mixing barrel through the hopper; according to the mortar raw material mixing device, by arranging the air cylinder and the motor, the air cylinder and the motor are in linkage with the mixing assembly to conduct lifting movement and rotation in the mixing barrel, mortar raw materials are mixed and stirred in the process, meanwhile, under cooperation of the middle filter plate, blocks in the raw materials are extruded and crushed through the mixing assembly, and then the mixing uniformity of the mortar raw materials is comprehensively improved.

The invention relates to the field of building material preparation, in particular to a high-strength concrete material and a preparation method thereof.According to the high-strength concrete material, through the synergistic effect of core-shell type temperature-sensitive resin particles, a pH response type expanding agent and industrial solid waste composite micro powder, multi-environment self-adaptive crack resistance and mechanical property breakthrough are achieved. The core component is prepared from 180 to 240 parts of cement, industrial solid waste composite micro powder (30 to 50 parts of fly ash-based nano SiO2 and 50 to 70 parts of steel slag micro powder), 10 to 15 parts of core-shell resin particles and 8 to 12 parts of pH response type expanding agent. According to the preparation process, multi-section intelligent stirring (ultra-high-speed shearing and dispersing of the nanometer material) and dynamic maintenance of the internet of things are adopted, the hydration process is precisely regulated and controlled, and the finally prepared material has excellent compressive strength and anti-cracking performance. The method is suitable for severe scenes such as ocean engineering and plateau buildings, and has wide application prospects.

The invention discloses an integrated manufacturing and construction method for fabricated building components based on BIM and 3D printing, and relates to the field of building construction, and the integrated manufacturing and construction method comprises a model creation module, a component splitting module, a printing path planning module, a material preparation module, a printing manufacturing module, a component transportation and storage module, a site construction module, a simulation analysis module and a quality tracing module. Creating a three-dimensional model by using BIM software, and reviewing by using VR; splitting the components according to capabilities, and recording the components by using a block chain; a 3D printing path is planned, and dynamic adjustment is conducted in combination with sensing; preparing an intelligent material, and performing plasma activation pretreatment; multi-nozzle collaborative printing and holographic monitoring are realized; intelligent packaging, unmanned driving and intelligent storage are achieved; aR auxiliary construction is combined with a brain-computer interface; and through simulation analysis and quality tracing, the quality and efficiency are guaranteed. According to the method, model creation is accurate, and multi-technology optimization components are split, printed, transported and constructed; the intelligent material, the robot and the AR are used for improving the quality efficiency; simulation analysis and quality tracing guarantee reliability, and intelligentization and sustainable development of buildings are promoted.

The invention discloses a high-consistency cutter passivation process and device based on flexible abrasive auxiliary force rheological polishing, and relates to the technical field of cutter passivation. The process comprises the following steps: step 1, preparing a gradient grinding material; step 2, programmable fiber flow control; 3, multi-stage gradient machining; and 4, intelligent closed-loop control. The device comprises a gradient abrasive material preparation module, a programmable fiber flow control device, a multi-degree-of-freedom machining platform, an intelligent monitoring module, a polishing solution circulation module and a protection module. Through the three-stage abrasive grain grading and programmable fiber flow control technology, magnetic particles and an external magnetic field do not need to be relied on, the agglomeration state of the polishing solution is directly damaged through fiber vibration, the fluid flow speed of a complex cutting edge area is increased, abrasive grain distribution uniformity is improved, laser confocal real-time monitoring and PID algorithm dynamic adjustment are combined, the precision is remarkably improved, and the polishing effect is good. And the method is particularly suitable for precise passivation of superhard cutters such as PCD cutters and the like.

The invention discloses a TiSiN / TiBC multilayer hydrogen-resistant wear-resistant coating as well as a preparation method and application thereof, and belongs to the technical field of material preparation. The TiSiN / TiBC multi-layer structure composite hydrogen-resistant wear-resistant coating is prepared on the surface of the steel substrate through the high-frequency pulse magnetron sputtering technology, the middle transition layer is designed between the steel substrate and the hydrogen-resistant coating, and the transition layer has good toughness and the thermal expansion coefficient (8 * 10 <-6 >-12 * 10 <-6 > / DEG C) matched with the substrate; the residual stress between the coating and the steel substrate is effectively reduced, the fracture toughness and binding force of the hydrogen-resistant coating are improved, the binding force of the coating is improved, and then the wear resistance of the coating is remarkably improved. And meanwhile, a large number of vacancy bonds such as Si-bonds, B-bonds, C-bonds and N-bonds contained in the hydrogen-resistant coating can be used for capturing hydrogen atoms, so that the capturing capacity on the hydrogen atoms is improved, the permeation effect of hydrogen is further inhibited, and the hydrogen-resistant efficiency of the coating is remarkably improved.

The invention belongs to the technical field of metal-based composite material preparation, and particularly relates to a method for treating a high-volume-fraction particle reinforced aluminum-based surface through friction stir. In order to solve the problems of particle aggregation, uneven distribution and the like in the preparation process of a high-volume-fraction particle reinforced aluminum-based composite material in the prior art, the invention innovatively introduces a method for mixing and adding solid lubricating particles with two-dimensional layered structures and hard particles. According to the method, the interface regulation and control effect of the two-dimensional layered particles is used in cooperation with the special stirring head, uniform distribution of the hard particles in the composite layer is effectively promoted, the hole defect caused by particle aggregation is remarkably reduced, and controllable preparation of the high-volume-fraction particle reinforced aluminum matrix composite is achieved. And subsequent solid solution and aging heat treatment are combined, so that the comprehensive mechanical property and wear resistance of the material are further improved. The method is simple in process and easy to implement, and has good engineering application value.

The invention provides an electric pile assembly line which comprises a preassembling branch line, a material preparation mechanism, a transfer mechanism and a final assembly branch line, the preassembling branch line is adjacent to the final assembly branch line, the material preparation mechanism is arranged at one end of the final assembly branch line, the transfer mechanism is located between the final assembly branch line and the material preparation mechanism, and the material preparation mechanism is used for storing diaphragms, bipolar plates and sealing gaskets. The preassembled branch lines are used for assembling the liquid flow frames, the partition plates and the blankets to form electrodes; the transfer mechanism is used for transferring the diaphragms, the bipolar plates, the sealing gaskets and the electrodes on the adjacent preassembled branch lines to the final assembly branch lines so as to stack the diaphragms, the bipolar plates and the sealing gaskets to form an electric pile. According to the invention, the distances between the transfer mechanism and the material preparation mechanism, the general assembly branch line and the adjacent pre-assembly branch line are equivalent, so that bipolar plates, sealing gaskets and diaphragms on the material preparation mechanism and electrodes on the pre-assembly branch line can be well transferred and stacked on the general assembly branch line to form an electric pile, the space layout is reasonable, the occupied production space is small, the cost is reduced, and the production efficiency is improved. The production efficiency is improved.

The utility model relates to the technical field of automatic feeding of bowl-shaped plugs, and discloses an accompanying feeding device of a bowl-shaped plug pressing machine, which comprises a movable feeding mechanism and a fixed material preparation mechanism, the accompanying feeding device of the bowl-shaped plug pressing machine is automatically designed, materials are prepared through the fixed material preparation mechanism, then the prepared materials are added into the movable feeding mechanism, and the movable feeding mechanism and the fixed material preparation mechanism are fixed. In the process that the movable feeding mechanism moves to place a batch of bowl-shaped plugs at designated positions and then press-fitting is conducted through a press, the fixed material preparation mechanism can prepare to add the next batch of bowl-shaped plugs at the same time, continuous operation is achieved, the working efficiency is improved, and the labor cost is reduced.

The utility model relates to the technical field of silicon carbide aluminum-based composite material preparation, in particular to a silicon carbide aluminum-based composite material mixing device which comprises a support and a swing frame, the swing frame is movably arranged on the support, a mixing tank and a stirring assembly are rotationally connected to the swing frame, and the mixing tank and the stirring assembly are opposite in rotating direction; a first rack and a second rack are arranged on the support, the stirring assembly is connected with the first rack through a forward swing intermittent mechanism, and the mixing tank is connected with the second rack through a reverse swing intermittent mechanism. The material mixing device has the beneficial effects that the material mixing tank and the stirring assembly rotate reversely, the stirring assembly stirs materials in the material mixing tank, and the forward swing intermittent mechanism and the reverse swing intermittent mechanism drive the swing frame to swing on the support while the material mixing tank and the stirring assembly rotate, so that the material mixing tank swings while rotating; therefore, the materials in the mixing tank are mixed more uniformly, and the mixing quality is ensured.

The invention provides a parameter monitoring method and system in a composite material preparation process based on optical fiber sensing, computer equipment and a medium, and belongs to the field of composite material detection. Center wavelength signals in the resin diversion stage are continuously collected through optical fiber strain sensors in a distributed optical fiber grating sensing array, and the distributed optical fiber grating sensing array is embedded into the multiple layers of dry carbon fiber cloth in the fiber preform in advance; the flowing position and time of the resin in the fiber prefabricated body are determined according to the minimum value of the central wavelength signal offset in the resin flow guide stage, and the flowing front edge of the composite material is constructed according to the flowing positions and time of the resin corresponding to the optical fiber strain sensors in the fiber prefabricated body. According to the method, the change of the structure state of the composite material in the resin diversion process can be continuously monitored in a complex variable-temperature environment, and the accurate monitoring of the three-dimensional resin flowing front edge in the composite material liquid forming process is realized.

The invention discloses a preparation method of a copper-tungsten composite material, which comprises the following steps: material preparation: taking a copper rod and a tungsten rod, and carrying out oil removal and ultrasonic cleaning on the copper rod and the tungsten rod; a tungsten rod is placed in a forming hole of a graphite mold, then a copper rod is placed on the top of the tungsten rod, the bottom end of the copper rod is provided with a circular truncated cone part, and an obtuse angle alpha is formed between the side face of the circular truncated cone part and the side face of the tungsten rod; feeding into a furnace: feeding the graphite mold with the copper rod and the tungsten rod into a vacuum furnace; vacuumizing is conducted, specifically, the vacuum furnace is vacuumized, and the vacuum degree is 10 <-3 >-10 <-5 > Pa; vacuum melting: heating a vacuum furnace to carry out vacuum melting, wherein the melting temperature is 1200-1320 DEG C; keeping high temperature: keeping the temperature at 1200-1320 DEG C for 5-10 minutes; controlled cooling: cooling to obtain a composite material; and post-treatment: carrying out heat treatment and machining on the composite material. Compared with the prior art, preparation of the high-quality copper-tungsten composite material can be achieved.

The invention provides a multifunctional loading system and a control method thereof. The multifunctional loading system comprises a prepared material conveying line; the supporting mechanism is driven by the transverse movement driving mechanism to transversely move; the conveying mechanism is installed on the supporting mechanism, an installation area is formed between the conveying mechanism and the supporting mechanism, the conveying mechanism comprises a plurality of feeding pieces which are driven by a feeding driving mechanism to feed materials towards the corresponding material preparation conveying lines, and containing areas are arranged among the feeding pieces; the steering mechanism comprises a steering frame located in the containing area and lower than the tops of the multiple feeding pieces, a rotation driving mechanism located in the mounting area and used for driving the steering frame to rotate, and a lifting driving mechanism located in the mounting area and used for driving the steering frame to ascend and descend. Through the bogie, goods input to a plurality of feeding pieces can be jacked and steered, the transverse movement driving mechanism is matched to drive the supporting frame to transversely move and position, the function that the conveying mechanism can input the goods into a material preparation conveying line one by one according to different layout modes is achieved, and the adaptability of the loading system is improved.

The invention discloses a wire rod for 2000MPa-level prestressed steel with the large specification of 15mm and a preparation method of the wire rod, and belongs to the technical field of metal material preparation and metal pressure processing. The invention aims to develop a 15mm large-specification high-performance prestressed steel wire rod with a novel component system and a matched production process thereof, the tensile strength of the wire rod is greater than or equal to 1200MPa, and the percentage reduction of area (after aging) is greater than or equal to 30%; the product can be used as a large-specification high-strength high-speed rail plate prestressed steel wire and a 1960-2000MPa-grade high-performance prestressed steel wire and a steel strand. According to the method, the technological process of molten iron pretreatment, converter smelting, LF refining, RH refining, square billet continuous casting, casting billet slow cooling pit slow cooling, casting billet heating, high-pressure water descaling, controlled rolling and controlled cooling and PF line heat preservation channel slow cooling and a complete and controllable production process system are adopted; and the harsh requirements of large-size high-performance prestressed materials of modern important projects on the performance of the wire rod are met.

The invention belongs to the technical field of ceramic materials, and relates to complex-phase high-entropy ceramic as well as a preparation method and application thereof. The technical problem that in the prior art, high-entropy ceramic cannot synchronously have high hardness and fracture toughness is solved. The invention provides a complex-phase high-entropy ceramic. The complex-phase high-entropy ceramic comprises a carbonitride phase and a single boride phase, the transition metal elements comprise titanium, zirconium, niobium, tantalum and hafnium; in the complex-phase high-entropy ceramic, calculated according to the volume content, 93Vol% is smaller than or equal to the carbonitride phase lt; 100 Vol%, 0 Vol% lt; and the single boride phase is less than or equal to 7Vol%. The complex-phase high-entropy ceramic has the advantages of uniform two-phase distribution, small grain size, high density, high hardness and high fracture toughness. The invention further provides a preparation method of the complex-phase high-entropy ceramic, a liquid-phase precursor method is combined with an in-situ hot pressing sintering method, the process is simple, and the production period is short. Meanwhile, the invention further provides application of the complex-phase high-entropy ceramic in material preparation in the fields of aerospace and mechanical engineering.

The invention provides a preparation method and application of a foamy copper reinforced aluminum-based composite material, and belongs to the technical field of aluminum-based composite material preparation. According to the foamy copper reinforced aluminum-based composite material, a variable-frequency and variable-power ultrasonic vibration assisted centrifugal casting technology is adopted, strong centrifugal force and the ultrasonic cavitation effect are utilized, so that the biological flowability of aluminum water is improved, the wettability between aluminum and copper is improved, and in combination with the effects of an auxiliary agent and Zn-Al or Sn-Al intermediate alloy, the foamy copper reinforced aluminum-based composite material is obtained. The problem that the binding force of foamy copper and an aluminum matrix is poor is solved, the adopted ultrasonic power is low (smaller than or equal to 1000 W), the preparation technology is simple, the obtained foamy copper reinforced aluminum matrix composite is free of obvious cracks and holes and high in density and thermal diffusion coefficient, and a light intelligent thermal management material can be provided for the field of electronic equipment.

The invention discloses modified cement-water glass slurry and a preparation method thereof, and belongs to the technical field of building material preparation. The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 50-70 parts of Portland cement, 20-35 parts of a water glass solution, silica fume, modified nano-silica, an early strength agent and the like, carrying out dry mixing on solid powder, stirring with part of deionized water to form base slurry, adding the water glass solution and the rest deionized water, and carrying out high-speed dispersion to obtain a slurry; and finally, carrying out ultrasonic treatment for 10-15 minutes at the frequency of 20-40 kHz and the power of 300-500 W. Wherein the early strength agent is compounded by triethanolamine and sodium sulfate according to the ratio of 1: 2-1: 3. According to the method, through raw material compounding and process optimization, the dispersity, the early strength and the crack resistance of the slurry are improved, and the method is mainly used for grouting operation in the field of construction engineering such as foundation reinforcement and water prevention and leakage stoppage.

The invention relates to the field of material preparation, and discloses a preparation method and system for realizing a silylene heating material, and the method comprises the following steps: firstly, obtaining a high-purity silicon raw material, analyzing purity factors, screening basic raw materials, measuring key components, then constructing a synthesis process route according to the components, proportioning reaction aids to optimize active parameters, and finally preparing a silylene heating material. The method comprises the following steps: preparing a silylene initial product by using chemical vapor deposition equipment, analyzing a crystal structure, evaluating lattice quality based on structural data, formulating a post-treatment process to remove impurities, detecting a heating performance index to calculate heating efficiency, constructing a material heating framework, querying a heat conduction factor to generate a preparation process flow, and finally establishing a quality control system according to the process flow. And querying heat fluctuation mining data, and generating a preparation management strategy. The material preparation efficiency of the silylene heating material can be improved.

The invention provides a method for preparing a high-performance silicon nitride ceramic ball based on a pressure modulation sintering technology, and relates to the field of functional ceramic material preparation, and the method comprises the following steps: 1, preparing a green body; 2, PMS sintering is carried out; step 3, cooling; traditional high-performance silicon nitride ceramic balls (the relative density is required to be larger than 99%, the Vickers hardness is required to be larger than or equal to 1500 kgf / mm, the bending strength is required to be larger than or equal to 920 MPa, and the fracture toughness is required to be larger than or equal to 6.0 MPa.m / ) are mainly prepared through a two-step process of normal pressure / air pressure sintering (GPS) and hot isostatic pressing (HIP). Although high densification of the material can be realized, the method has the problems of complicated process flow, high energy consumption, long production period, high equipment occupancy rate and the like.

The invention discloses a recycled aggregate close packing method established based on a volume expansion and contraction putting principle, belongs to the technical field of building material preparation, and is mainly applied to grading optimization and close packing treatment of recycled aggregate in production of building materials such as concrete. Comprising the following steps: S1, constructing a recycled aggregate three-dimensional particle model; S2, constructing a recycled aggregate accumulation model; and S3, performing grading optimization. The three-dimensional morphology characteristics of irregular shape, protruding edges and corners and the like of the recycled aggregate are fully considered, the volume expansion and shrinkage putting principle is combined, efficient collaborative accumulation of the coarse and fine aggregate is achieved, the accumulation density is improved by 8%-12% compared with that of a traditional method, and the accumulation structure is remarkably improved; the optimal feeding proportion and sequence of the aggregates of different particle sizes are accurately determined, the advantages of all the particle sizes are fully played, and the filling effect in the concrete is improved.

The utility model discloses step-by-step heightening and jacking equipment for lifting a large device, which is characterized in that a lifting system base (2) is provided with a heightening block lifting oil cylinder (3), a heightening block locking device of a heightening block jacking platform (4) corresponds to a locking groove in position, a material preparation system is positioned on the outer side of a lifting system, heightening blocks (12) are stacked and placed in a heightening block material preparation area (13), and the heightening block lifting oil cylinder (3) is connected with the heightening block jacking platform (4). The left side material preparation lifting device and the right side material preparation lifting device can separate the upper block-up block (12) from the bottom block-up block (12), and the bottom block-up block (12) is conveyed into the block-up block containing area (9) through the automatic feeding platform. According to the utility model, manpower and material resources can be saved, and the block-up efficiency can be greatly improved.

The invention discloses equipment and a method for preparing an aluminum silicon carbide (Al-SiC) composite material through a pressure infiltration process, and belongs to the technical field of metal matrix composite material preparation. The efficient pressure preparation equipment for the aluminum-silicon carbide composite material comprises a furnace body, a lower graphite crucible, an upper graphite crucible, a liftable graphite rod, an inflation connector and an exhaust connector, during specific use, an aluminum ingot and a silicon carbide preform are heated respectively and prevented from making contact with each other, so that the interface reaction strength is relieved, and combination of aluminum and silicon carbide is facilitated; after the target temperature is reached, the graphite rod is lifted to open the leak hole, so that the molten aluminum falls into the lower graphite crucible, and under the action of high-pressure gas, the molten aluminum is infiltrated into the silicon carbide prefabricated body, so that the aluminum-silicon carbide composite material is prepared; the problems of low density, poor process stability, violent interface reaction and low bonding strength in the prior art can be solved.

The invention provides a high-dielectric low-loss ceramic composition as well as a preparation method and application thereof, and relates to the technical field of functional ceramic materials, the high-dielectric low-loss ceramic composition comprises a perovskite type compound serving as a main component and an auxiliary component; wherein the perovskite type compound contains a Ba element and a Ti element, and the auxiliary components comprise a first auxiliary component containing an Mg element, a second auxiliary component containing an Nb element, a third auxiliary component containing an Mn element, a fourth auxiliary component containing a rare earth element R, and a fifth auxiliary component containing SiO2. According to the present invention, the ratio of the main components to the auxiliary components is subjected to design optimization, the ratio of the Nb element in the second auxiliary component to the Mn element in the third auxiliary component is adjusted, and the material preparation process parameters are subjected to optimization control, such that the dielectric constant and the temperature stability of the dielectric ceramic material are improved, and the dielectric loss is reduced.

The invention relates to the technical field of material preparation, and discloses a nano-composite construction preparation method and system for a high-flexibility display film, and the method comprises the steps: setting a composite construction sequence corresponding to a nano-composite material; calculating the interface coupling bonding strength of the nano composite material in the compounding process, calculating the deformation adaptation coefficient of the display film substrate in the compounding process, and analyzing the dynamic synergistic compounding efficiency of the nano composite material; thermal gradient distribution data and pressure load data of the nanocomposite in the construction process are recorded, the stress relaxation rate in the display film after construction is completed is calculated, the uniform attenuation coefficient of the interlayer structure of the display film is calculated, and the multi-dimensional structure stability performance of the display film is evaluated; and determining a composite gradient distribution strategy of the nano composite material, formulating preparation process parameters of the display film in nano composite construction, and executing composite construction preparation of the nano composite material to obtain a finished product of the high-flexibility display film. According to the invention, the quality stability of the preparation of the high-flexibility display film can be improved.

The invention belongs to the technical field of aluminum honeycomb material preparation, and discloses a variable-curvature aluminum honeycomb core material processing device, a processing method and application. Preparing the honeycomb filler to obtain a honeycomb core molded surface of a honeycomb cell after the honeycomb filler is cured and an outline of the honeycomb cell after the honeycomb filler is cured; the prepared honeycomb filler is filled in the honeycomb hole grids, honeycomb hole grid packaging operation and vacuumizing compaction are carried out, and a combination with the honeycomb hole grids filled with the honeycomb filler is obtained; obtaining a processed pre-treated body of the variable-curvature aluminum honeycomb core material; removing polyethylene glycol; and the cleaned pre-treated body of the variable-curvature aluminum honeycomb core material is placed on a honeycomb forming mold, sealing and vacuum compaction are conducted, drying is conducted, and finally the variable-curvature aluminum honeycomb core material is obtained. The problems that in the prior art, when the variable-curvature aluminum honeycomb is machined, clamping and fixing are difficult, compression deformation occurs in the honeycomb machining process, core grids are torn, and the machining precision is low are solved.

The invention discloses a high-density concrete production system and method, and relates to the technical field of building materials, the high-density concrete production system comprises a material preparation module, an intelligent control module, a compact forming module, a bionic strengthening module, a sustainable production module, a function integration module and a monitoring feedback module, the material preparation module is used for preparing nano core-shell aggregate, quantum dot doped cementing material and industrial solid waste based composite aggregate; the intelligent control module dynamically optimizes production parameters through a digital twinborn model and an AI algorithm; the compaction forming module executes a high-pressure vibration-vacuum combined compaction process and honeycomb-shaped aggregate directional arrangement; the bionic strengthening module is provided with a self-repairing microcapsule and a bionic honeycomb dense structure; the sustainable production module is used for CO2 mineralization maintenance and solid waste resourceful treatment; the function integration module is embedded into the piezoelectric ceramic piece and the thermochromic material; and the monitoring feedback module monitors the internal state of the concrete in real time and feeds back the internal state, so that intelligentization, high efficiency, environmental protection and functionalization of concrete production are realized, the performance of the concrete is improved, and the application range of the concrete is widened.

The invention discloses a recycled modified polypropylene composite material preparation system and a resource recovery method, and relates to the technical field of high polymer material science and engineering. The raw material pretreatment module adopts near infrared spectrum classification, multi-stage cleaning, drying and crushing, and the moisture content is controlled to be less than 0.5%; the melt blending module melts the materials at 180-220 DEG C, modifiers and additives are added, and vacuum degassing is performed to remove impurities; adding a reinforcing agent into the modification reinforcing module, and performing ultrasonic dispersion and dynamic vulcanization; the molding processing module is used for manufacturing a product through extrusion, injection molding or calendaring; the quality detection module is used for detecting mechanical and thermal properties; the waste recovery module is used for crushing and melting granulation to realize a closed loop; the intelligent control module uses a PLC to coordinate each module. Integrated treatment of waste polypropylene is achieved, the purity of raw materials and the performance of a composite material are improved, the resource utilization rate is increased through closed-loop recycling, manual intervention is reduced through intelligent control, product stability is guaranteed, economic and environment-friendly benefits are achieved, and high-valued circulation of waste plastic is promoted.

The invention relates to the technical field of copper material preparation, in particular to a method for reducing surface copper powder in the rolling process of a copper rod, which comprises the following steps: dividing the rolling process into a plurality of process sections, and supplying different lubricants to each process section; establishing a correlation model of the process parameters and the copper rod performance, and generating a process parameter feasible region according to the target performance of the copper rod; roller surface parameters of all the process sections are monitored respectively, and the surface topography variation is calculated; when the surface topography variation is larger than a set value, rolling process parameters are adjusted; monitoring the surface topography variation corresponding to the adjusted rolling process parameters, and comparing the surface topography variation with a set value; the surface topography variation is smaller than a set value; and when the rolling process parameters are adjusted to the feasible region boundary and the surface topography variation is greater than a set value, alarming. According to the method, a whole-process closed-loop control system of process segmentation optimization-dynamic monitoring adjustment-rapid emergency response is constructed, fundamental control over the copper powder problem is achieved, and the rolling process is better promoted to be transformed to be intelligent and refined.

The invention provides a BIM-based pipeline comprehensive arrangement construction method, and relates to the technical field of building construction.The method comprises the steps that (1) modeling is conducted according to specialties, specifically, a Magicad platform serves as basic modeling software, and BIM models of all specialties are systematically established; (2) pipeline integration: combining the professional BIM models into the same space through a Magicad platform; (3) collision detection: performing collision detection on the first pipeline comprehensive model through a Magicad platform; (4) collision optimization adjustment: optimizing pipeline arrangement of the first pipeline comprehensive model according to a collision detection result; (5) design change and entity verification: verifying the consistency of the second pipeline comprehensive model and the site, and optimizing and adjusting the second pipeline comprehensive model according to a verification result and design drawing change; (6) process simulation: carrying out visual simulation on the construction process of the final installation scheme; (7) material preparation and construction; and (8) quality acceptance. According to the scheme, the construction efficiency can be improved, and labor and material cost is reduced.

The invention discloses an additive manufacturing method for in-situ regulation and control of a TiB / TiC titanium-based heterostructure through laser deposition, and belongs to the technical field of composite material preparation. According to the method, laser path planning is carried out based on three-dimensional modeling and layered slicing; the preparation method comprises the following steps: ball-milling and mixing titanium alloy powder, nano boron carbide powder and trace rare earth powder according to a specific proportion, and carrying out vacuum drying; and addition of trace rare earth is beneficial to grain refinement and improvement of reinforcement phase distribution and interface bonding. Under the action of a high-energy laser beam, the mixed powder is fused in an argon protective atmosphere, an in-situ reaction is carried out at the same time, and TiB and TiC reinforced phases are generated; the gradient component design can be implemented in the laser deposition process, specifically, the powder feeding proportion of B4C powder is dynamically controlled through a program, the gradient of the B4C powder is increased from the bottom layer to the surface layer in the direction perpendicular to the substrate, and therefore the gradient heterostructure with the enhanced phase content and performance gradually changed is formed. According to the method, the problems of non-uniform reinforcement phase distribution, obdurability mismatch, plasticity loss and the like in a traditional method are solved, the prepared composite material or gradient component has high strength (the tensile strength reaches 987.66 MPa) and good plasticity and toughness matching, no crack defect exists, and the method is suitable for manufacturing of high-performance parts in the fields of aerospace and high-end machine manufacturing.