106results about How to "High surface finish" patented technology

The invention discloses a stainless steel laser welding parameter optimization method based on a dynamic annular scanning path. The stainless steel laser welding parameter optimization method comprises the steps that S1, welding parameter setting is initialized to be suitable for controlling welding heat distribution; s2, measuring the material thickness of the welding area of the stainless steel workpiece before welding; s3, the scanning path layer number and the progressive speed are determined according to the welding parameters; s4, the welding control system adjusts welding parameters according to the temperature monitoring data; s5, the laser welding control system adjusts the layer number, the progressive speed and the scanning path radius of the dynamic annular scanning path in real time; s6, the scanning amplitude, the scanning frequency and the welding speed are optimized in real time; and S7, after welding is completed, quality detection is conducted on a welding seam, and detection data are compared with a preset welding quality standard. According to the method, accurate control over welding heat input, remarkable improvement of the welding seam quality and comprehensive optimization of the welding efficiency are achieved.

The invention provides a sleeve material for molding an aspheric glass lens and a preparation method of the sleeve material. The method comprises the steps that 1, raw material powder is mixed and dried, tungsten carbide powder and Si3N4 powder are mixed in a ball milling tank in an inert atmosphere to obtain composite powder, and the adding amount of the Si3N4 powder is 1 wt%-15 wt%; (2) die filling; putting the composite powder into a graphite female die, and pre-pressing under the pressure of 5-20 MPa; (3) sintering is conducted, specifically, the mold is placed in an SPS system, the initial axial pressure ranges from 5 MPa to 10 MPa, vacuumizing is conducted till the pressure is 10 Pa or below, gradient heating sintering is conducted, the highest sintering temperature ranges from 1500 DEG C to 1900 DEG C, the highest sintering pressure ranges from 40 MPa to 60 MPa, and after heat preservation is finished, the mold is taken out after cooling; and (4) sampling: carrying out sand blasting treatment on the graphite on the surface of the sample to obtain the sleeve material for molding the aspheric glass lens. The material has a lower thermal expansion coefficient.

The invention discloses a solid-liquid two-phase flow magnetic shear thickening polishing device and method based on controllable multi-physical field coupling, and belongs to the field of magnetic field auxiliary polishing. In order to solve the problems of low polishing efficiency and poor polishing quality uniformity caused by single physical field and poor controllability in the traditional magnetic field assisted polishing technology, the invention provides a coupling effect of a controllable magnetic field and a flow field to realize high-efficiency and high-quality precise polishing. The polishing device is composed of a screw pump, a permanent magnet, a magnetic pole support, a circulating pipeline, an inlet flange, a baffle, a clamp, a workpiece, a positioning block, a positioning plate, an outlet flange and a circulating pipe flange. Permanent magnets with different distributions and polarities are arranged in the magnetic pole support, the magnetic field intensity and the targeting degree of a polishing area are accurately controlled, and the screw pump conveys a polishing medium to the polishing area at a specific flow speed through rotating extrusion of a screw. The curing degree of the polishing medium and the control force of the grinding material are controlled by precisely regulating and controlling the coupling effect of the magnetic field and the flow field, and efficient and high-quality precise polishing of the workpiece is achieved.

The invention provides a PEF composite board and a preparation method, and relates to the technical field of insulation boards, the composite PEF board is formed by bonding a plurality of layers of board bodies, and comprises a base layer, the base layer is prepared from the following components in parts by weight: 58 to 60 parts of HDPE (High-Density Polyethylene), 4 to 6 parts of nano montmorillonite, 1 to 2 parts of benzoyl peroxide, 2 to 5 parts of BHT (Butylated Hydroxytoluene) heat stabilizer and antioxidant, 2 to 5 parts of maleic anhydride grafted polyethylene, 0.2 to 1 part of magnesium stearate and 0.3 to 0.8 part of epoxidized soybean oil; comprising a fireproof layer which is composed of the following components in parts by weight: 45-55 parts of HDPE and 5-15 parts of a phosphate ester environment-friendly flame retardant; comprising a thermal insulation layer and is prepared from the following components in parts by weight: 45-55 parts of HDPE, 5-10 parts of lignin fibers and 5-10 parts of a bio-based foaming agent formed by mixing sodium bicarbonate and citric acid. The invention has the beneficial effects that the mechanical strength, flame retardant property and thermal insulation effect of the PEF plate are obviously improved, the weather resistance and environmental protection property are enhanced, the optimal balance of high performance and cost effectiveness is realized, and the PEF plate is suitable for various building and industrial application environments.

The invention belongs to the technical field of additive manufacturing, and relates to a laser additive manufacturing method for a low-stress, low-defect and low-deformation titanium alloy thin-wall part. According to the method, key process parameters such as the laser power, the scanning speed, the interlayer deflection angle and the island size are optimized, post-heat treatment is conducted, the residual stress in the titanium alloy manufacturing process is remarkably reduced, the defects such as pores and cracks are reduced, deformation of formed parts is effectively controlled, and therefore the forming quality of TA15 and other titanium alloy parts is improved. The method has the advantages of being high in forming efficiency, wide in application range and the like, and can be widely applied to high-end equipment manufacturing in the fields of aerospace, energy and the like.

The invention provides a cold header for fastener production, and belongs to the technical field of cold headers. Comprising a cold heading head, a cold heading base and a conveying unit, and the conveying unit is used for conveying cold heading workpieces and connected with the cold heading head and the cold heading base. By arranging the conveying unit, the cold heading workpiece can be automatically conveyed to the position of the next cold heading hole, and the conveying unit runs without an additional driving source, so that the cost of the cold heading machine is reduced, the processing efficiency of the cold heading machine on the cold heading workpiece is ensured, the yield is increased, and the production cost is reduced. The conveying unit can automatically lubricate the cold heading workpiece, the first cold heading die and the second cold heading die, the problems of galling, scratching and the like of the cold heading workpiece in the cold heading process are effectively prevented, the surface smoothness and the size precision of the workpiece are improved, and after the first cold heading die and the second cold heading die are lubricated, the dies can be protected, and the production efficiency is improved. The metal surface of the die can be prevented from being oxidized or corroded, and the service life of the die is prolonged.

The invention relates to the technical field of wire and cable processing equipment, in particular to a wire and cable copper wire drawing machine which comprises a machine table and the like, a pay-off device, a fixing plate and a pull rod are sequentially and fixedly mounted on the machine table from left to right, a wire drawing box is slidably connected to the position, close to the pull rod, of the machine table, and a fixed wire drawing module is fixedly connected to a side plate of the wire drawing box; the top end of the wire drawing box is fixedly connected with a lubricating liquid box, a hand pressure valve is installed between the wire drawing box and the lubricating liquid box, the hand pressure valve is connected with the fixed wire drawing module through a liquid pipe, and the hand pressure valve makes contact with the pull rod. Through the cooperative design of the hand pressure valve and the pull rod, automatic conveying control over lubricating liquid is achieved, in the wire drawing process, along with movement of the wire drawing box, the hand pressure valve is automatically opened, the lubricating liquid is accurately conveyed to the position where the wire drawing module is fixed, timely and effective lubrication is provided for a copper wire, and friction and abrasion between the copper wire and the wire drawing module are reduced.

The application discloses a die-casting device for window sliding wheel machining, which comprises an operating machine table arranged on the ground, a die-casting base fixedly arranged at the middle of the bottom of the inner cavity of the operating machine table, and a limiting guide rod fixedly arranged at the top of each corner of the die-casting base, and belongs to the technical field of die-casting. The die-casting device for window sliding wheel machining is characterized in that the upper die, the hydraulic rod, the lower die mechanism and the electric telescopic rod are matched to realize efficient and stable die-casting. During die-casting, the structures are cooperatively driven to automatically circulate and flow the cooling liquid, the cooling and shaping are rapidly completed, the processing efficiency is effectively improved, the circulating cooling liquid can drive the inside of the lower die mechanism to generate high-frequency oscillation, the internal bubble defects of the casting are eliminated, the product structural strength and surface quality are improved, meanwhile, the cooling liquid is uniformly disturbed in the die to improve the heat exchange efficiency, the temperature of the cavity is rapidly and evenly balanced, the deformation and cracking of the casting are prevented, the forming precision and product qualification rate are ensured, and the overall structure is simple, stable and reliable in operation.

This invention discloses a free-machining high-strength aluminum-lithium alloy, its preparation method, and its applications, belonging to the field of alloy materials technology. The free-machining high-strength aluminum-lithium alloy has the following weight percentages of elements: Li: 3.5–5.5%, Cu: 2.6–3.1%, Zn: 6.8–7.1%, Mg: 2.1–3.0%, Y: 1.5–4.0%, Bi: 0.85–1.05%, In: 0.05–0.08%, Cr: 0.05–0.45%, Ti: 0.02–0.04%, with the balance being Al. This invention involves batching, smelting, refining, online refining, online degassing and filtration, casting, homogenization, extrusion, and two-stage aging treatment to finally obtain a free-machining high-strength aluminum-lithium alloy with a uniform microstructure. This invention has a reasonable component ratio, low manufacturing cost, and the resulting product has excellent strength and hardness, and exhibits excellent surface finish after dry machining.

The invention provides a gradient functional composite material, a preparation method and application of the gradient functional composite material to a die-casting die. The composite material sequentially comprises a bonding layer, a metastable-state high-entropy alloy relaxation layer, a component gradient transition area and a dynamic densification composite surface layer from a base body to the surface. Wherein the relaxation layer can generate reversible martensite phase transformation at the die-casting temperature so as to actively dissipate thermal stress; the composite surface layer contains a low-melting-point nanophase, and can flow at high temperature to realize self-repairing and dynamic lubrication of surface micro-damage. According to the composite material, gradient transition and metallurgical bonding between layers are achieved through continuous process modulation. The coating system provided by the invention has multiple synergistic protection mechanisms of active stress digestion, interface gradient relaxation and surface self-adaptive repair, and can remarkably improve the thermal fatigue resistance, melting loss resistance and demolding performance of the die-casting die, so that the service life of the die is greatly prolonged.

The utility model discloses a pouring device for a counterweight casting, which relates to the technical field of casting pouring, and adopts the technical scheme that the pouring device comprises a device base, a pouring outer column and a vibration fixing block, a fixing ring is fixedly mounted outside the device base, a sliding bulge is fixedly mounted outside the pouring outer column, and a mold component is slidably connected outside the sliding bulge; a vibration fixing block is fixedly installed outside the pouring outer column, the vibration fixing block is connected with a fluid vibration assembly, and the fluid vibration assembly comprises a sliding rod, a motor, a rotating disc and a vibration spring. Due to the liquidity of molten metal and shrinkage in the solidification process, accurate balance is difficult to achieve due to the defects of air holes, shrinkage cavities and the like which are easily generated, and the pouring efficiency is low in the casting process.

The application discloses a surface-defect-free high-purity oxygen-free copper wire manufacturing method based on continuous extrusion, relates to the field of non-ferrous metal precision machining technology, and directly adopts an up-drawing continuous casting billet to extrude a target specification wire rod in one step through continuous extrusion, so that a plurality of drawing processes and at least one intermediate annealing process in a traditional process are completely omitted, a process flow is compressed by more than 60%, a production cycle is significantly shortened, equipment investment, labor cost and energy consumption loss are reduced, wire rod production efficiency is greatly improved, large-scale production cost is greatly reduced, and the application has a strong industrialization advantage; the continuous extrusion process introduces large plastic deformation, can strongly break original as-cast coarse grains, and simultaneously compacts and eliminates internal defects such as pores and shrinkage porosity generated in the up-drawing continuous casting process, and improves wire rod density. Compared with a traditional processing method, the wire rod prepared by the application avoids problems such as annealing oxidation, uneven structure and performance fluctuation, and the elongation of a finished product is greater than or equal to 40%.

The utility model relates to a stainless steel pipe fitting port forming device which comprises a bottom plate, two sets of upper clamping plates and lower clamping plates are installed on the upper surface of the bottom plate through a clamping mechanism, lower V-shaped plates are installed on the two sides of the upper surface of each lower clamping plate, upper V-shaped plates are installed on the lower surfaces of the upper clamping plates, and the upper V-shaped plates are arranged between the two lower V-shaped plates. A baffle is mounted on the upper surface of the bottom plate through a translation mechanism; a hydraulic cylinder is mounted on the upper surface of the bottom plate, and a flaring head is mounted at the telescopic end of the hydraulic cylinder through a bolt. The lower V-shaped plate and the upper V-shaped plate are driven by the clamping mechanism to get close to each other to clamp the stainless steel pipe fittings, the stainless steel pipe fittings of different sizes can be fixed, the axes of the fixed stainless steel pipe fittings are consistent with the axis of the flaring head all the time, and therefore the flaring device can be suitable for flaring the pipe fittings of different sizes and is wide in application range.

The utility model discloses a kind of circular non-standard knife holders, belong to oil cylinder production and manufacturing technical field, a kind of circular non-standard knife holder, including knife holder box body, knife holder box body is ladder structure, is successively provided upper ladder surface, side surface and middle ladder surface, the top end between upper ladder surface and the bottom end surface of knife holder box body is provided with vertical installation round hole groove structure, round hole groove and strip-shaped through hole are provided with between middle ladder surface and the bottom end surface of knife holder box body circular through hole, transverse side of knife holder box body is provided with transverse installation round hole groove structure, and circular cutter installation groove is set up on side surface, and circular cutter installation groove is located between upper ladder surface, middle ladder surface.It can improve the cutting position of blade, enhance the utilization of cutting edge, reduce the use cost of scraping and rolling light cutter, improve processing precision and stability, improve the surface finish of workpiece, reduce the loss of wear, while can avoid chip accumulation, ensure processing efficiency and the surface quality of processing product.

This invention relates to the field of machining technology, and discloses a machining method for insert placement and the insert itself. The machining method for insert placement includes the following steps: Step S10, the insert placement blank includes an open area and a closed area. The insert placement blank is clamped onto a CNC machine tool, and the open area of ​​the insert placement blank is CNC machined to obtain a semi-finished insert placement product with a 0.03mm wire EDM machining allowance in the open area. The height of the open area of ​​the semi-finished insert placement product is greater than or equal to 20mm. Step S20, the open and closed areas of the semi-finished insert placement product are wire EDM machined to obtain multiple finished inserts. This invention, by reserving a 0.03mm allowance in CNC machining, is reasonably designed to avoid wire clamping and wire EDM springback problems caused by slow wire cutting, ensuring the surface finish of the product and meeting the machining requirements, while not affecting the wire EDM machining efficiency.

The invention belongs to the technical field of aviation machining, and discloses a numerical control machining method for a magnetically soft alloy large-length-diameter-ratio thin-wall rotary workpiece, which comprises the following steps of: clamping the outer circle of the workpiece, penetrating a mandrel through an inner hole, and carrying out rough machining and finish machining on the outer circle at one end of the workpiece; turning around, clamping the outer circle of the workpiece, enabling an inner hole to penetrate through a mandrel, and performing rough machining and finish machining on the outer circle of the other end of the workpiece; the outer circle of the workpiece is clamped, the end face of the workpiece is flattened, an inner hole is bored, and back gouging is conducted on the root of the hole; and turning around, clamping the outer circle of the workpiece, flattening the end face of the workpiece, and turning and adjusting a threaded hole. The problem that in the existing thin-wall part machining process, wall thickness uniformity and consistency control are poor is solved, the machining efficiency is high, and the machining quality is stable and reliable.

The present invention relates to the field of mold technology, and specifically to an automatic rotating core-pulling and demolding mold for bending pipes, comprising a workbench, a first hydraulic structure and a second hydraulic structure are respectively arranged on the surface of the workbench, a bending pipe mold is detachably installed on the surface of the workbench, a heat dissipation vibration structure for vibrating and dissipating heat of the bending pipe mold is arranged in the middle of the workbench, a swing limiting structure for limiting the bending pipe mold is arranged on the side of the heat dissipation vibration structure, and a wiping structure for wiping the first hydraulic structure and the second hydraulic structure is arranged on the side of the heat dissipation vibration structure away from the swing limiting structure. The core is pulled out respectively by reversely driving the first hydraulic structure and the second hydraulic structure, driving the heat dissipation vibration structure to close and generate gas to blow air to dissipate heat on the outer ring surface of the bending pipe mold, and vibrating the bending pipe mold, thereby effectively preventing the material inside the bending pipe mold from sticking and affecting subsequent demolding, and blowing air to dissipate heat from the bending pipe mold, which can reduce the mold temperature and reduce thermal expansion.

The invention discloses a steel pipe cleaning mixed solution, a preparation method thereof and a method for cleaning pollutants on the surface of a steel pipe, and belongs to the field of metal surface treatment. The invention aims to solve the problems of low cleaning efficiency, non-uniform surface treatment effect, poor system stability and the like due to the adoption of a single acidic medium or a simple compound system in the traditional steel pipe cleaning method. According to the method, a mixed solution composed of nitric acid, ammonium bifluoride, sodium sulfate, 1-hydroxyethylidene-1, 1-diphosphonic acid, pyridinium propane sulfonate, a brightener, an emulsifier and water is adopted as a steel pipe cleaning medium. The steel pipe cleaning agent is scientific in formula component matching, high in cleaning efficiency, capable of effectively improving the surface state of a steel pipe, simple, convenient and feasible in operation process, environmentally friendly, suitable for batch cleaning treatment of related steel pipes and good in practicability and economical efficiency.

The present invention discloses a durable and bump-resistant PETG heat shrinkable film, which comprises a printing layer, a core layer and a durable layer in sequence, wherein the printing layer mainly comprises NPG-modified PET and a functional masterbatch; the core layer mainly comprises PET, PETG and a bump-resistant toughening agent; the durable layer mainly comprises NPG-modified PET, PET, a scratch-resistant agent, a functional masterbatch and a lubricant; the present invention also discloses a method for preparing the above-mentioned heat shrinkable film, wherein the raw materials of each layer are dried and uniformly mixed, and the heat shrinkable film is obtained through extrusion, melt plasticization, die casting, biaxial stretching, cooling and shaping, and winding. The heat shrinkable film prepared by the method of the present invention has a three-functional layer structure, and the film as a whole can integrate the advantages of each functional layer. At the same time, the materials of each layer are derivatives of PET materials, with similar polarity, and there is no problem of stratification, which can reduce the difficulty of equipment operation, reduce the process flow, and reduce the overall thickness of the film, thereby reducing the production cost.

This utility model discloses a sand mold manufacturing equipment for casting water glass. A molding base plate is sequentially conveyed to a coating component, a sand filling component, a compaction component, a hardening component, and a demolding component via a conveying assembly to complete the sand mold manufacturing. During the manufacturing process, the mold surface is covered with a thin film, improving the surface smoothness of the mold and thus enhancing the surface quality of the sand mold cavity, thereby improving the surface quality of the casting. The thin film also separates the sand mold from the model, significantly reducing demolding resistance. Therefore, the draft angle can be appropriately reduced, improving the dimensional accuracy of the casting. Furthermore, during demolding, issues such as scratching the cavity or localized damage to the cavity are avoided, reducing the workload of subsequent sand mold repair. Improving the surface quality of the sand mold further enhances the surface quality of the casting, while simultaneously reducing wear on the model from the sand mold, ensuring the dimensional accuracy of the model, extending the model's service life, and further improving the dimensional accuracy of the casting.

The utility model provides a kind of spinneret, belong to textile machinery technical field.Its structure includes: a plurality of shunt cone is arranged to form array in the upper end of spinneret body, the shape of the array is regular hexagon, there are a plurality of spinneret hole in the periphery of each shunt cone;Every two adjacent shunt cone is arranged at equal intervals;Every two adjacent spinneret hole is arranged at equal intervals.The utility model is designed with new structure, can optimize the spinning process of fiber, improve the dispersion uniformity and surface quality of fiber.Through the structure design and material selection of spinneret, realize efficient, stable fiber production.The spinneret includes spinneret body and multiple spinneret holes arranged on the spinneret body.The shape, size and arrangement of spinneret hole are carefully designed to achieve uniform dispersion of fiber.At the same time, spinneret body is made of high-temperature-resistant and wear-resistant material to ensure stability in high temperature and high pressure environment.

This invention provides a flame-retardant, high-transmittance, and weather-resistant composite material for LED lampshades and its preparation method. By weight, the raw materials include: 80-95 parts bisphenol A type polycarbonate, 4-10 parts phenyl-containing polysiloxane microspheres, 1-4 parts mesoporous silica phosphorus-loaded microspheres, 0.3-0.8 parts silane coupling agent, 0.3-0.8 parts flame retardant, 2-5 parts organic nano-montmorillonite, 0.2-0.6 parts polycarbodiimide, 0.3-0.8 parts antioxidant, 0.3-0.7 parts light stabilizer, and 0.3-1.0 parts lubricant. The flame-retardant, high-transmittance, and weather-resistant composite material for LED lampshades provided by this invention possesses comprehensive properties of high light transmittance, high toughness, and heat resistance.

The invention relates to the technical field of compositions of high-molecular compounds, and particularly discloses a polyethylene composition, a foam board thereof and a preparation method of the foam board. The polyethylene composition is prepared from the following raw materials in parts by weight: 15 to 25 parts of high-density polyethylene, 25 to 35 parts of regenerated high-density polyethylene, 25 to 35 parts of regenerated low-density polyethylene, 5 to 15 parts of calcium carbonate master batch and 0.1 to 0.5 part of AC foaming agent. The polyethylene composition disclosed by the invention has the beneficial effects that the regenerated high-density polyethylene and the regenerated low-density polyethylene used in the polyethylene composition are both prepared by recovering waste polyethylene products; the material prepared from the polyethylene composition can meet the requirements of transportation packaging, advertisement display, temporary buildings and other use scenes where the requirements for the strength and flexibility of the polyethylene material are not very high, resource recycling is achieved, and resource waste and environmental pollution are reduced.

The utility model discloses a polishing sheet outer coating spraying device, which relates to the technical field of polishing sheet production and processing, and comprises an operation table, a rotating mechanism mounted outside a vertical plate, a first connecting block slidably connected to the tail end of a first rotating seat, and a clamping mechanism mounted between the first connecting block and the interior of the first rotating seat. Adsorption mechanisms are installed outside the first connecting block and the second connecting block, a vertical base is slidably connected to the upper side of the operation table in a limiting mode, a partition plate is fixedly connected to the interior of the vertical base, spraying mechanisms are symmetrically installed on the upper side of the partition plate, a conveying mechanism is installed below the partition plate, and a through groove is formed in the outer portion of the vertical base. According to the device, polishing pieces with different thicknesses are compatible through magnetic attraction and elastic self-adaptive clamping, double-face synchronous spraying is achieved in combination with rotation driving, paint is evenly atomized through a hollow material distribution plate, the whole surface is covered with the coating in the circumferential direction in the continuous rotation process, the manual turning step is omitted, the spraying efficiency and the coating uniformity are remarkably improved, and the operation process is simplified.

The invention belongs to the field of aluminum alloys, and particularly relates to an aluminum alloy for a resistor and a production process and application of the aluminum alloy for the resistor. Fe: less than or equal to 0.1%; less than 0.05% of Cu; less than 0.02% of V + Ti; and the balance of Al and inevitable impurity elements. By reasonably optimizing the raw material ratio of the aluminum alloy formula and finely controlling the temperature condition and the time condition in the cold rolling step and the annealing step, the components and the tissue are more uniform, the internal tissue structure is improved, the mechanical property is improved, and the rolling mechanical property meets the requirements that the tensile strength is larger than 170 MPa, the ductility is larger than or equal to 15.0%, and the elongation percentage is larger than or equal to 15.0%. And the mechanical requirements of aluminum alloy raw materials for resistors are met. In addition, five times of cold and hot alternate quenching are adopted, air holes and defects are further reduced, the porosity in the die casting can be reduced to 3.1% from original 8.8%, the hardness is improved to 131 HB from original 93 HB, and the machining and follow-up application requirements of the aluminum alloy raw material for the resistor are met.

The present application provides a kind of forging die and valve cover flashless forging method, the forging die includes mutually slidingly connected die inner ring and die outer ring, die inner ring has first accommodating cavity suitable for accommodating blank, die outer ring has inner wall surface suitable for accommodating blank and die inner ring, and the inner wall surface is jointly enclosed with the top surface of die inner ring to form second accommodating cavity suitable for accommodating blank, first accommodating cavity is communicated with second accommodating cavity, die outer ring has start forging state that is lifted to first height, and finish forging state that die outer ring bottom surface is flush with die inner ring bottom surface, slidingly connected die inner and outer ring can accommodate blank of different sizes and shapes, die inner ring and die outer ring are switched between start forging state and finish forging state by sliding to complete the forging of blank, and due to the downward movement of die outer ring following blank during forging, the radial deformation generated by blank forging pressure is converted into axial allowance, the generation of flash is reduced, and processing efficiency and processing quality are improved.

The invention discloses a constant-temperature fusion covering forming mechanism for granular resin 3D printing, and relates to the technical field of granular resin 3D printing, the constant-temperature fusion covering forming mechanism comprises a built-in frame and a third servo motor, auxiliary assemblies used for assisting feeding are arranged on the two sides of the interior of the built-in frame, and each auxiliary assembly comprises an auxiliary frame, a second hydraulic rod, a built-in plate, a material guide frame and a material guide pipe; a second hydraulic rod is arranged in the auxiliary frame. According to the constant-temperature cladding forming mechanism for granular resin 3D printing, the dual-heating design is adopted through the auxiliary assembly, heating wires in a material guiding frame and an auxiliary frame are matched with an S-shaped material guiding pipe, granular resin is fully preheated, the melting temperature is kept stable through a heat preservation layer outside a material barrel, and the situation that the forming quality is affected by temperature fluctuation is avoided; the two sets of built-in plates improve the feeding efficiency, meanwhile, a fault auxiliary discharging function is achieved, the hollow structure of the auxiliary frame and the design of a threaded cover are convenient to maintain, the phenomena of material blocking and material breaking are effectively reduced, and the printing efficiency and stability are improved.

The utility model discloses a lithium battery shell stamping die device with cleaning function belongs to stamping die technical field, include: upper die plate and lower die plate, set up the board to set up the board bottom end is equipped with male module, the lower die plate upper end is equipped with the bottom plate, the utility model discloses, when lithium battery shell stamping die device operation, cleaning brush can real -time sweep the dust and chippings of convex module surface attachment, and dust absorption groove and dust absorption hole are through the negative pressure effect and rapidly absorb dust chippings etc, realize the seamless link of cleaning action, not only cover the traditional device difficult to reach corner area, more through the dual effect of dynamic cleaning and static adsorption, greatly reduce the interference of tiny particle to die precision, make lithium battery shell in the stamping process can keep higher size consistency and surface finish, so that the lithium battery shell stamping die device with cleaning function uses the practicality better.

The invention discloses self-lubricating flame-retardant epoxy resin for pultrusion of basalt fibers as well as a preparation method and application of the self-lubricating flame-retardant epoxy resin, and relates to the technical field of high polymer materials. The self-lubricating flame-retardant epoxy resin is prepared from the following raw materials in parts by mass: 100 parts of a phenolic aldehyde modified epoxy resin solution, 0.5-2 parts of a silane coupling agent, 2-8 parts of modified graphite powder, 20-30 parts of modified nano aluminum hydroxide, 0.5-1.0 part of a plasticizer, 0.2-0.8 part of an accelerant and 10-15 parts of a diluent. The modified graphite powder and the modified nano aluminum hydroxide are used as inorganic inert fillers to synergistically modify the epoxy resin, so that the basalt fiber pultrusion sectional material has the characteristics of low friction coefficient, good flame retardance, high strength, good toughness and low shrinkage rate, is simple in preparation process and easy for industrial production, and has wide application prospects in the field of basalt fiber pultrusion sectional materials.