7199 results about "Mold removal" patented technology

The invention discloses forming equipment for ceramic guide rail production and a forming method thereof, and relates to the technical field of ceramic guide rail forming, the forming equipment comprises a conveyor, a forming processing box and a raw material box, and the top of the conveyor is provided with the forming processing box. The ultrasonic disperser arranged in the raw material box is combined with the constant-temperature heating sleeve and the viscosity sensor of the conveying pipe, uniform flowing and accurate metering injection of slurry are guaranteed, in the forming stage, the vacuum pump actively pumps out bubbles in a cavity through the micropore array, pores are further eliminated in cooperation with the high-frequency micro-vibration device, the compactness and surface smoothness of the guide rail are greatly improved, and the production efficiency is improved. The cooling runner realizes gradient cooling and curing through closed-loop control of a temperature sensor and a temperature regulator, ceramic cracking deformation is effectively inhibited, the rotary mold assembly supports multi-angle adjustment, nondestructive demolding of a complex structure is facilitated, the production period is shortened, the process stability, energy consumption control and equipment adaptation flexibility are further enhanced, and the production efficiency is improved. And the targets of high precision, low defect and batch production are achieved.

The invention relates to the technical field of injection molds, and discloses an impeller secondary ejection injection mold which is characterized in that a fixed mold core plate is provided with a fixed mold core, a fixed mold plate is provided with a fixed mold core, the fixed mold core plate penetrates through the fixed mold plate, and the fixed mold core is embedded in the fixed mold core; a movable mold core is arranged on the movable mold plate, a movable mold core is arranged on the movable mold core plate, and the movable mold core plate is arranged on the movable mold plate in a sliding and penetrating mode. The second driving piece can enable the movable mold core to stretch out or retract from the movable mold core, an impeller cavity used for forming an impeller is formed among the fixed mold core, the fixed mold core, the movable mold core and the movable mold core, and the fixed mold core and the movable mold core are matched in a sliding mode; the first ejector pin slidably penetrates through the movable mold core plate, the third driving piece can enable the first ejector pin to stretch out or retract from the movable mold core, the edge of the end of the fixed mold core abuts against the edge of the inner side of the bottom face of the annular base, and the end of the first ejector pin abuts against the bottom face of the annular base; the overall structure is simple, demolding is convenient and fast, and structural damage to the impeller is avoided.

The invention provides an intelligent candy casting molding and demolding system, and relates to candy production equipment, the system comprises a casting station, a cooling curing station, a demolding station, an outer support, a mold bearing and conveying structure, a control module and a plurality of mold structures; the mold structures are evenly distributed on the mold bearing and conveying structure and driven by the mold bearing and conveying structure to sequentially pass through all stations, each mold structure comprises a mold body and a bearing sliding base structure, and the mold body is provided with a forming cavity and a jacking gas injection assembly. When the bearing sliding seat structure moves to a pouring station, triggering induction and feeding back to the control module, and the control module synchronously controls the mold bearing conveying structure to start and stop, pouring of the pouring module and operation of the air blowing and cold curing equipment; and the demolding action unit is in contact with the jacking gas injection assembly to inject demolding gas flow and cause vibration, so that the sugar body is automatically demolded. The full-process automatic and intelligent control of pouring, cooling solidification and demolding is achieved, and the production efficiency and the product consistency are improved.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

The invention relates to the technical field of tunnel engineering prefabricated part production, in particular to a large-diameter duct piece independent kiln assembly line conveying prefabricating method and system. S2, a reinforcement cage and an embedded part are installed; s3, concrete is precisely poured and vibrated; s4, pre-curing and surface treatment; s5, carrying out roller way type flow conveying; s6, hydration heat-driven dynamic maintenance is carried out; and S7, demolding and finished product detection. And S8, mold circulation. According to the large-diameter duct piece prefabricating production line, through technical innovation in multiple aspects of mold, conveying, maintenance, control and the like, the core technical problem in existing large-diameter duct piece prefabricating production is solved, high-precision, high-efficiency, low-energy-consumption and green production of large-diameter duct pieces is achieved, and the large-diameter duct piece prefabricating production line has remarkable technical advantages and wide application prospects and is suitable for large-diameter duct piece prefabricating production. The method can be widely applied to infrastructure construction projects such as shield tunnels, open caisson projects and underground comprehensive pipe galleries.

The invention relates to the technical field of spaceflight material forming, in particular to a tension control winding process of a spaceflight carbon fiber composite launch canister, which comprises pretreatment, winding forming, curing and post-treatment. The method comprises the following steps: S1, coating a release agent and a modified coating after processing a core mold, carrying out plasma treatment and eliminating stress; the carbon fiber filaments are soaked in resin containing nanometer components, and are pre-stretched after a hot melting reaction; s2, closed-loop tension control is conducted, winding is conducted according to segmented angles, and modified resin is coated between layers to be overlapped in a crossed mode; s3, stepwise heating and curing, dynamically regulating the pressure and introducing inert gas; and S4, polishing after hydraulic demolding, carrying out sand blasting, carrying out transition layer and ceramic coating, and carrying out multi-dimensional detection. According to the process, the mechanical property and environmental adaptability of the launch canister are improved, the process precision is high, defects are reduced, the forming time is shortened, the rework rate and cost are reduced, the spaceflight requirement is met, and the process is suitable for batch production.

The invention discloses a composite material ship body forming method in the technical field of composite material ship body forming. The composite material ship body forming method comprises the following steps that demolding cloth is laid after a mold is pretreated; cutting and drying the fiber cloth sheet according to strength analysis; laying layers in a staggered manner and embedding a reinforcing structure; a diversion system is arranged according to a partition gradient diversion strategy; a double-layer vacuum bag is used for nesting and sealing; and performing relay glue injection at multiple glue injection points, sequentially injecting glue from the middle part to the two sides, and maintaining negative pressure. The resin pouring quality and the production efficiency are improved through an improved pipe distribution mode, a multi-point distributed pipe distribution system is combined with a dynamic glue injection strategy, uniform flowing distribution of resin in a mold is achieved, the common phenomenon of local resin accumulation or insufficient infiltration in a traditional process is eliminated, the consistency of product performance is improved, and the production cost is reduced. The resin flow path is accurately guided, bubble residues are reduced, the resin flow speed is controlled, the mold filling time is shortened, and the resin dosage is regulated and controlled.

The invention relates to a top-cover-free rectangular concrete body inner mold demolding device and demolding method.According to the top-cover-free rectangular concrete body inner mold demolding device, through innovative structural design, a rectangular inner mold is divided into two angle molds and two L-shaped molds, and a track extending by a specific angle (45 degrees in the horizontal direction) and an intermittent driving device are matched. During demolding, the intermittent driving device can accurately drive the two angle molds to synchronously slide inwards firstly, the contact area and friction force between the inner mold and a concrete body are effectively reduced, then the two L-shaped molds are driven to synchronously slide inwards, and the whole demolding process is completed. Compared with a traditional demolding mode, the demolding efficiency is greatly improved, and the demolding time is shortened; by the adoption of the gradual demolding mode, direct beating and violent disassembly of the mold and the concrete body are avoided, the risk that the inner mold and the concrete body are damaged is effectively reduced, the surface integrity and the internal structural strength of the concrete body are guaranteed, the service life of the inner mold is prolonged, and the production cost is reduced.

The invention relates to the technical field of concrete block production, and discloses a self-insulation concrete block forming device which comprises a base and a mold box, a mounting frame is fixedly arranged at the top of the base, and a vibration groove is formed in the top of the base. During use, the mounting frame moves downwards to drive the discharging head to move synchronously, and when the mounting frame moves to a proper height position, the sliding mechanism drives the two convex sliding blocks to do reciprocating horizontal motion above the mold box, so that uniform arrangement of slurry can be realized; under the matching action of a linkage mechanism, a vibration mechanism and an elastic mechanism, the mold box vibrates up and down in a reciprocating mode, the uniform material distribution effect is improved, bubbles in slurry are rapidly discharged, the production quality is improved, and after building blocks are formed, a scraping plate is driven to move downwards to achieve the scraping function through the action of a control mechanism; and the mold frame is driven to move upwards under the matching action of the electromagnetic adsorption mechanism and the demolding mechanism, so that the demolding function is realized.

The invention is suitable for the technical field of powder metallurgy and advanced ceramic material sintering equipment, and provides an integrated flash sintering device for vacuum and a sintering method. The device comprises a power supply module, a high vacuum module, a first servo hydraulic machine, a second servo hydraulic machine, a third servo hydraulic machine, a mold rotation switching module, a vacuum feeding module, a green body pressing module, a demolding and mold cleaning module and a mold transfer module. According to the invention, an integrated gear tray design is adopted to integrate the functions of die installation, graphite paper treatment and green body pressing, and online synchronous cleaning of an electrode and a die is realized through die fixation and a cleaning brush arranged in a cleaning drum; therefore, full-automatic, high-efficiency and high-stability continuous production of flash sintering from powder filling to finished product collection is realized.

The utility model discloses an injection mold convenient to demold. The injection mold convenient to demold comprises a top plate, an upper mold base, a lower mold base, a bottom plate, a demolding driving mechanism, a first core-pulling insert, a second core-pulling insert and a third core-pulling insert, a first cavity seat is arranged at the bottom of the upper die seat, a second cavity seat is arranged at the top of the lower die seat, two symmetrically-arranged forming cavities are formed between the first cavity seat and the second cavity seat, each forming cavity is provided with a first pipe opening, a second pipe opening and a third pipe opening, and the first core-pulling insert is arranged at the side end of the first pipe opening. The second core-pulling insert is arranged at the side end of the second pipe opening, the third core-pulling insert is arranged at the side end of the third pipe opening, and the demolding driving mechanism is connected with the first core-pulling insert. The first core-pulling insert, the second core-pulling insert and the second core-pulling insert are respectively arranged on the pipe orifices in different directions of the forming cavity, so that independent core-pulling operation of the three-way pipe fitting in all directions can be realized, mutual interference in the core-pulling process is effectively avoided, and the demoulding smoothness of a product is improved.

The invention relates to a large-scale high-temperature alloy blank casting method capable of controlling the casting size, and belongs to the technical field of high-temperature alloy casting. Measuring a temperature curve of the sand mold after the high-temperature alloy is poured; a process model is created, simulation software is used for carrying out stress deformation simulation, a part model of the casting is created, the simulation result of the part model and the simulation result of the process model are compared, the reduced scale, correction and the machining amount are adjusted in real time, and the process model is obtained; manufacturing a process pattern according to the process model, and producing a sand mold by utilizing the process pattern; creating a sand core model, inputting sand mold temperature curve parameters into simulation software, carrying out sand core deformation stress simulation, measuring sand core deformation stress, and manufacturing a core box according to the sand core model; a core bar is manufactured according to the design, the manufactured core bar is placed in a core box, and a sand core is manufactured; demolding the sand core; combining the sand core with the sand mold to obtain a casting cavity; and molten steel is poured into a casting cavity, and a casting blank is formed after cooling and solidification.

The invention relates to the technical field of die-casting production and manufacturing of metal parts, in particular to a magnesium alloy die-casting die device. The mold comprises a mold mechanism, the mold mechanism comprises a first mold assembly, a second mold assembly and a feeding mechanism, a plurality of receding openings are formed in the peripheral sides of the first mold assembly and the second mold assembly, liquid pouring gates and cavities are formed in the first mold assembly and the second mold assembly, and the feeding mechanism comprises a feeding barrel and a sprue spreader; when the first mold assembly and the second mold assembly are closed, the mold core is located in the mold cavity; the core pulling assembly comprises a fixing frame connected with the mold core and a driving device connected with the fixing frame; the overflow discharging system comprises an overflow groove, an exhaust channel and an exhaust mechanism; and the pre-jacking mechanism is configured to act on the die-casting metal part during die opening. The technical problems of turbulence air entrapment, shrinkage cavity shrinkage porosity, demolding damage and the like are effectively solved, and the production quality and efficiency of magnesium alloy die-casting parts are improved.

The utility model discloses an oil pipe forming die which comprises a die body, the die body comprises a movable runner plate, and a first forming assembly, a second forming assembly, a third forming assembly and a fourth forming assembly are arranged in the die body. A first side core-pulling assembly, a second side core-pulling assembly, a third side core-pulling assembly, a fourth side core-pulling assembly and a fifth side core-pulling assembly are further arranged in the mold body, the first forming assembly is connected with the first side core-pulling assembly, and the first forming assembly and the second forming assembly are arranged in a spaced mode and connected through the second side core-pulling assembly. The third forming assembly and the second forming assembly are arranged in a spaced mode and connected through a third side core-pulling assembly, the fourth forming assembly and the third forming assembly are arranged in a spaced mode and connected through a fourth side core-pulling assembly, and the fourth forming assembly is further connected with a fifth side core-pulling assembly. According to the utility model, the core-pulling assemblies are linked to synchronously pull the core and demould the pipe column, so that the core-pulling demoulding device is applicable to the processing and manufacturing of automobile oil pipes.

The invention discloses a shaping mold facilitating rapid demolding of a plastic product, and relates to the field of injection molds, the shaping mold comprises a top mold, and the shaping mold has the advantages that a spray head can be hidden in the mold, the integrity of a mold cavity is prevented from being influenced, the injection molding quality is guaranteed, spraying of a demolding agent and injection molding of a plastic part are not interfered, and the injection molding efficiency is improved. Meanwhile, the shaping mold can automatically spray a release agent, manual participation in injection molding of all plastic parts is not needed, a mechanical arm is not needed, the cost is reduced, time and labor are saved, meanwhile, the injection molding efficiency is fully improved, control programming and use of a position sensor do not need to be considered, the injection molding process is fully simplified, and the risk of device damage is reduced; the later maintenance cost is relatively low, and the detection of mold closing is closely linked with the spraying of the release agent, so that the application of the release agent and the detection of mold closing do not need to be carried out at intervals, the splashing of molten materials is avoided, the safety is improved, the injection molding period is greatly shortened, and the production efficiency is improved.

The invention relates to the technical field of injection molding devices, in particular to a convenient-to-demould injection molding device for producing automotive interior plastic parts, which comprises an injection molding machine body, a cleaning structure, a transmission structure, a sealing structure, a collecting structure, a lubricating structure, a demoulding structure, a movable module, a mould, a sliding seat and a blanking barrel, the sealing structure can relieve sealing of the connecting pipe and seal the discharging barrel, the cleaning structure can clean attachments in the discharging barrel through cooperation of a scraper blade and vacuum, an operator does not need to climb to clean the attachments, the cleaning safety is improved, the transmission structure conveniently drives the connecting frame to slide up and down, the filter screen is shaken, blockage is prevented, and the cleaning efficiency is improved. The demoulding structure is convenient for pushing a plastic part to realize demoulding, the lubricating structure is convenient for lubricating the ejector rod, reducing the abrasion of the ejector rod and ensuring the smooth movement of the ejector rod, and the collecting structure is convenient for collecting cleaning material residues in the collecting box, so that the collecting efficiency is improved, the material treatment is convenient, secondary cleaning is not needed, and the cleaning efficiency is improved.

The invention discloses a method for improving cloth lines after hot pressing of an epoxy glass fiber composite material, and the method comprises the steps of resin glue solution blending, glass fiber cloth presoaking, gradient pre-drying, hot pressing molding, cooling demolding and the like. The volume expansion rate is accurately matched with the resin curing shrinkage rate, interface stress caused by shrinkage difference is directly counteracted, meanwhile, gradient pre-drying and staged hot pressing processes are combined, and the resin fluidity and interface bonding strength are optimized. The resin conversion rate is controlled in two stages through gradient pre-drying, and flow blocking caused by premature curing is avoided; and secondly, through the chemical compensation mechanism of the expansion monomer, the mechanical property of the material is maintained while the cloth lines are eliminated.

The invention discloses a method for regulating and controlling a pore structure of a cement-based supercapacitor, and belongs to the technical field of energy storage. The method for regulating and controlling the pore structure of the cement-based supercapacitor comprises the following steps: firstly, preparing foam, then uniformly stirring cement and sand, adding water and a water reducing agent, fully stirring, and finally, doping the foam into slurry, and fully stirring to obtain the slurry. And pouring the stirred slurry into a mold, standing for 24 hours, and demolding to obtain the cement matrix. And packaging the front, back, left and right surfaces of the cement matrix by using epoxy resin, and drying at 60 DEG C for 3 days. And soaking the treated test piece in a 2mol / L KOH solution for 5 days, and then manufacturing the test piece into the cement-based supercapacitor. According to the invention, the regulation and control of the pore structure of the cement-based supercapacitor are realized, the treated cement-based supercapacitor has better pore connectivity, the pores show tropism, the conductivity and the capacitance are better, the specific capacitance can reach 63.3 F / m < 2 > to the maximum, and the compressive strength and the breaking strength are reduced.

The beam and slab prefabrication integrated production line comprises a steel bar machining unit, a movable mold table, a mold closing mechanism, a concrete pouring unit, a steam curing unit and a finished product transferring unit which are sequentially arranged along a ground rail. A T-shaped steel reinforcement framework is formed by the steel reinforcement machining units, a pouring area is defined by the strip-shaped mold table, the T-shaped mold plate and the side mold plate through the unique structural design of the movable mold table, and the side mold plate can move along the oblique sliding base. The mold closing mechanism realizes mold closing through a hydraulic rod; the finished product transfer unit transfers finished products through cooperation of a hydraulic supporting rod and a transfer trolley. The production line effectively solves the problems of large demolding friction, high energy consumption, low efficiency and the like of a traditional T-shaped beam plate prefabrication production line, can improve the prefabrication quality and production efficiency of the T-shaped beam plate, and is suitable for large-scale bridge engineering construction.

The invention discloses a forming injection molding device for a medical polymer puncture frame, relates to the technical field of forming injection molding, and aims to solve the technical problem that a traditional guide channel is of an equal-diameter straight pipe structure, and the puncture precision is insufficient. According to the invention, the stepped inner cavity is matched with the embossed concave plate, so that the precise stepped reducing and low-friction inner wall is formed at one time, and the puncture precision is improved; the extrusion mechanism is bidirectionally driven to ensure complete molding and lossless demolding of the convex patterns, so that the product qualification rate is improved; the pressure buffering mechanism reduces micro-convex pattern gaps through pressure regulation and control, so that the integrity and the injection molding quality are improved; the reverse mold mechanism realizes automatic demolding through elastic deformation, the demolding time is shortened, and structural damage is avoided; the bending joints optimize the performance of the embossed concave plate, prolong the service life of the embossed concave plate and reduce the damage rate of the micro-embossed concave plate; through the design, the problems that precision and functionality of traditional equipment are difficult to consider, demolding is prone to damage and the like are solved, production efficiency and product stability are improved, and reliable structural guarantee is provided for puncture operation.

The invention discloses a construction technology for a prefabricated drainage box culvert steel formwork, and is suitable for the technical field of box culvert formwork construction. The drainage box culvert steel formwork system comprises the construction steps of construction preparation, installation of a pedestal and an inner formwork support, installation of a box culvert foundation, installation of an inner formwork assembly, installation of a formwork assembly, one-time pouring forming, formwork removal after pouring and transferring. The construction site regionalization layout is adopted, a box culvert steel bar binding area and a formwork installation transverse moving area with an adjustable inner formwork support are arranged, the circulating operation of formwork erecting, pouring, demolding and transferring is achieved through a main beam suspension type inner formwork assembly, and a hydraulic formwork collecting device is innovatively adopted for driving a symmetrical hinged type inner formwork system; and in combination with the symmetry and multi-point uniform stress characteristics of a plurality of auxiliary supporting devices, the bending deformation of the inner template is effectively controlled through sequential control of a layered equal-height high-speed pouring process with preferential base angles.

The invention relates to the technical field of mold equipment, in particular to an improved mold structure which comprises a bottom plate, a base plate, a movable mold plate, a fixed mold plate and a runner plate, a push plate is connected to the bottom plate, a fixed plate is mounted on the bottom plate, the fixed plate is arranged between the push plate and the bottom plate, a demolding mechanism is mounted on the push plate and comprises a push cover, and the push cover is mounted on the push plate. A first insertion hole is formed in the push cover, an insertion piece is detachably installed on the fixing plate, the insertion piece comprises a connecting plate, a fixing rod is installed on the connecting plate, a second insertion hole is formed in the fixing plate, and the fixing rod is inserted into the first insertion hole and the second insertion hole to fix the push plate to the fixing plate; a top stick column is detachably installed in the push cover, an annular groove is formed in the top stick column, and the fixing rod is clamped into the annular groove of the top stick column to fix the top stick column. And mold opening and closing mechanisms are mounted on the movable mold plate, the fixed mold plate and the runner plate. The mold has the effect of improving the convenience of quick mold replacement and the mistake proofing of the sequence of mold opening and closing steps of the mold.

The invention relates to a hard alloy micro-texture tool based on discharge plasma pressureless sintering and a preparation method. Comprising the following steps: preparing a micro-texture male die pressing head; wC-Co mixed powder is obtained; the pressure head in the step (1) is adopted to apply 150-180 MPa pressure to the WC-Co mixed powder, the pressure is maintained for 60 min, and a biscuit is obtained after demolding; putting the biscuit into a graphite mold, assembling the mold, carrying out vacuum pressureless sintering on the biscuit, heating to 1300-1400 DEG C at the heating rate of 90-110 DEG C / min, carrying out heat preservation for 10 + / -2 minutes, and then cooling to room temperature along with a furnace to obtain a hard alloy block with a micro-texture on the surface; and the micro-texture surface of the hard alloy block is only polished to be bright. According to the method, thermal damage and fusion edge collapse are thoroughly avoided, and high-precision, namely high geometric fidelity, high efficiency, namely short sintering period and low-cost preparation of the microstructure is realized.

The invention relates to the technical field of demolding, and discloses a resin handicraft pouring auxiliary demolding device which comprises a base plate and a top plate arranged above the base plate. In the deformation link of the silica gel mold, by means of the limiting effect of the top plate and cooperative work of the driving assembly, the driving assembly drives the silica gel mold to move upwards, and the top plate stably restrains the top of the mold, so that the mold uniformly deforms in a controllable range; by means of matching of the boss-shaped protrusions and the synchronous frame, the synchronous frame is located at the bottom with the large size of the protrusions at the initial stage of insertion of the pressing plate, the jacking amplitude of the synchronous frame is large, the pressing plate is driven to effectively break the strong adsorption force between a workpiece and a mold with large force, and along with increase of the insertion depth of the pressing plate, the synchronous plate slides towards the top with the small size of the protrusions at the moment; and the jacking amplitude of the synchronous frame is reduced, the extrusion force is automatically slowed down accordingly, and the stress requirements of different demolding stages are accurately matched.

The invention relates to the technical field of casting molds, in particular to a high-precision wax mold forming mold for a complex-structure casting, which comprises a first outer mold, a second outer mold, a bottom mold and a top mold, a first inner module and a second inner module are arranged in the first cavity; the parting surface of the second outer mold and the first outer mold is arranged along the side part of the outer arc surface of the lower bracket of the air bag; the bottom die is connected with the first outer die and the second outer die in a clamped mode, a first through hole is formed in the bottom die, a first inserting rod is inserted into the first through hole, and the first inserting rod penetrates through the bottom die to be connected with first blind holes in the bottoms of the first inner die block and the second inner die block in an inserted mode. And the top die is matched with the end parts of the first inner die block, the second inner die block and the second outer die. Through reasonable design of the wax mold structure, one-time integral forming of the air bag lower support of a complex structure is achieved, meanwhile, smooth demolding of a wax mold is guaranteed, and the wax mold forming efficiency and quality are improved.

The invention relates to the technical field of concrete electric poles, in particular to a steel rod tailing ultra-high-performance concrete electric pole and a manufacturing method thereof.The manufacturing method comprises the steps that S1, slag, fly ash and silicon powder are mixed and stirred at the rotating speed of 200-300 r / min for 15-20 min, and a needed mixture is prepared; s2, mixing the mixture obtained in the step S1 and the modified tailing sand according to the proportion of 1: 1, adding steel fibers, polyvinyl alcohol fibers, borax and a modified alkali activator, and uniformly mixing and stirring to obtain tailing concrete; s3, the prepared concrete is poured into an electric pole mold, the electric pole mold is put into a vibrating table to be vibrated for 3-5 min, after mold filling is completed, a test mold is cured for 20-24 h at the normal temperature and then demolded, a demolded test block is put into a curing box, curing is conducted for 7-8 days at the relative humidity of 85-90% and the room temperature of 15-25 DEG C, and the steel rod tailing ultra-high-performance concrete electric pole is obtained. Under the condition of normal-temperature maintenance, the refractory brick has excellent performances of relatively high compressive strength, simple manufacturing process, small environmental pollution, fire resistance, high temperature resistance and the like.

The invention discloses an environment-friendly tundish magnesium-calcium dry material for thin-strip cast-rolling short-process steelmaking, and belongs to the technical field of refractory materials. The invention discloses an environment-friendly tundish magnesium-calcium dry material for thin-strip cast-rolling short-process steelmaking. The tundish magnesium-calcium dry material is prepared from the following raw materials in percentage by mass: 44-62.5% of magnesia aggregate, 22.5-24% of dolomite aggregate, 11-28% of magnesia fine powder and 3-5% of a binding agent, the binding agent is silica sol modified by a phosphate esterification aluminic acid ester coupling agent. The preparation method comprises the following specific steps: putting magnesia fine powder, a binding agent, magnesia aggregate and dolomite aggregate into a V-shaped mixing mill, uniformly stirring for 5 minutes, putting the stirred mixture into a mold, ramming, vibrating and molding to obtain a molded green body, curing at room temperature for 24 hours, demolding, drying at 200 DEG C for 24 hours, and carrying out heat treatment in an air atmosphere to obtain a dry material sample. According to the invention, the binding agent with good compatibility with a matrix is prepared by improving the binding agent, so that the binding agent can play a reinforcing role.

The application discloses a notebook shell lightweight structure injection molding equipment and relates to the technical field of plastic processing and injection molding. The notebook shell lightweight structure injection molding equipment comprises two bottom plates, a front mold frame, a rear mold frame, a front mold base, a rear mold base and a fixed plate. The front mold frame is fixedly arranged on the front mold frame bottom plate and is provided with a positioning guide column fixedly arranged on the front mold frame. The rear mold frame is fixedly arranged on the rear mold frame bottom plate and is slidably connected with the front mold frame through the positioning guide column. The front mold base is fixedly installed on the front mold frame and is internally provided with a cavity one. The rear mold base is fixedly installed on the rear mold frame and is internally provided with a cavity two. The cavity two can be combined with the cavity one to form an injection molding cavity. The fixed plate is slidably arranged on the rear mold frame bottom plate and is provided with a plurality of air-assisted ejector pin assemblies fixedly arranged on the fixed plate. The air-assisted ejector pin assembly comprises a guide rod and a push rod. The notebook shell lightweight structure injection molding equipment can guarantee the consistency of the demolding effect of each position of the mold, improve the product stability and the yield.

The invention relates to the technical field of stamping production devices, and discloses trailer production stamping equipment which comprises a stamping table, a lower die and an upper die, a stamping anti-deviation assembly for driving the upper die to vertically move is installed at the top of the stamping table, and stamping pushing parts are correspondingly installed on the two sides of the top of the lower die; stamping pushing pieces are correspondingly installed on the two sides of the top of the lower die. The stamping and anti-deviation effects can be achieved, anti-deviation precision and stability are achieved, stamping strength is high, edge warping is not prone to occurring, stamping quality is high, materials can be ejected out of the lower die, the situation that the materials are clamped in the lower die after stamping is avoided, die taking and demolding are convenient, the materials pushed to be demolded can be taken out of the die, and production efficiency is improved. The anti-deviation stamping device has the advantages that the anti-deviation stamping production capacity is excellent, the stamping precision is high, the stamping quality is good, automatic discharging and discharging are convenient, and the production efficiency is high.