16 results about "Fine dispersion" patented technology

The application relates to the technical field of high-viscosity material dispersion equipment, and discloses a double-planetary dispersion feeder, which comprises a material bucket, the bottom of the material bucket is provided with a movable base, a support frame for stably supporting the material bucket is arranged between the bottom of the material bucket and the movable base, the upper part of the material bucket is provided with a bucket cover, the inside of the bucket cover is provided with a planetary gear box, and the planetary gear box is internally provided with a planetary gear transmission mechanism. In the process that the dispersion shaft performs composite motion, the internally arranged hydraulic telescopic rod can drive the telescopic inner rod to move up and down, so that the middle shear plate fixedly connected with the sliding block is lifted between the rough shear plate and the fine shear plate, the interval of the shear layer is dynamically adjusted, and the process rigidification problem caused by the fixed dispersion plate in the prior art is fundamentally solved. The equipment can dynamically adjust the interval of the shear plates in real time and on line according to different stages of material from wetting to fine dispersion, so that the shear strength required by different formulas and processes can be automatically matched.

The invention relates to a high-shear emulsifying stirring tank assembly for daily chemical production. The high-shear emulsifying stirring tank assembly comprises a tank body, a cover body is installed at the upper end of the tank body through a flange, a feeding valve is installed on the cover body, a discharging valve is installed at the lower end of the tank body, the lower end of the tank body is of a hemispherical structure, and a bottom stirrer, a reversing supporting device and a top stirrer are arranged on the tank body. According to the high-shear emulsifying and stirring tank assembly for daily chemical production, longitudinal stirring of the top stirrer, transverse stirring of the bottom stirrer and overall swinging of the tank body driven by the reversing supporting device are combined, a three-dimensional crossing composite shear flow field is formed in the tank body, and macroscopic shaking is overlaid. Compared with a traditional single-direction stirring technology, the stirring dead angle is thoroughly broken through, the movement amplitude and turbulence intensity of the materials are enhanced, the shearing rate and mixing uniformity are effectively improved, and finally rapid and fine dispersion and efficient emulsification of the daily chemical raw materials are achieved.

The invention provides a composite raw material dispersing device. The composite raw material dispersing device comprises a stirring barrel and a stirring shaft, the feeding mechanism comprises a conical flow dividing cover fixed to the top of the stirring barrel, a central liquid material channel and a circumferential powder material channel, the central liquid material channel and the circumferential powder material channel are arranged on the conical flow dividing cover, and a circular seam discharging assembly is arranged at the bottom of the circumferential powder material channel; the rotor mechanism comprises a rotating rotor, a feeding channel arranged at the top of the rotating rotor and an internal screening cavity, and a screening plate and a screening channel are arranged in the screening cavity; the stator mechanism comprises a fixed stator, multiple layers of shearing teeth which are inserted in a staggered mode and do not make contact are arranged between the side face of the fixed stator and the rotating rotor, and sharp holes distributed in a staggered mode are formed between the bottom of the fixed stator and the rotating rotor. Through the multi-stage and multi-mode shearing action, the efficient, uniform and fine dispersion effect is realized.

The application discloses a high-thermal-conductivity carbon black composite coating and a preparation method and application thereof, and relates to the technical field of coating production. The high-thermal-conductivity carbon black is pretreated to obtain pretreated carbon black; a base resin, the pretreated carbon black, reinforcing fillers and an antistatic agent are blended to obtain a blended material; the blended material is added with weather-resistant additives for fine dispersion to obtain a dispersed material; and the dispersed material is added with a curing agent and an accelerator for curing to obtain the composite coating. The prepared coating has excellent performance and better quality.

The invention relates to the technical field of asphalt preparation, in particular to modified asphalt preparation equipment and method.The preparation method comprises the following steps that S1, matrix asphalt is pretreated; s2, premixing a composite modifier; s3, carrying out gradient high-speed shearing; s4, carrying out anti-aging modification; the distributed high-speed shearing equipment in the step S3 comprises an equipment body, a machine body shell, a fixed rotating blade, a movable rotating blade and a plurality of flow deflectors, the fixed rotating blade is fixed to a shearing shaft, and the movable rotating blade is arranged in a sliding mode in the axial direction of the shearing shaft; the multiple flow deflectors are arranged around the outer ring of the bottom of the shearing shaft; according to the preparation method, the dispersion uniformity of the modified asphalt is remarkably improved, the anti-aging performance is greatly optimized, a conventional shearing mode of a single rotating speed is broken through, a gradient process of rough shearing and fine shearing is adopted, large particles are crushed in the rough shearing process, multiple added raw materials are effectively mixed, and fine dispersion is performed in the fine shearing process, so that the production efficiency is remarkable, and the production cost is reduced.

This invention relates to the field of continuous internal mixing and extrusion equipment technology, and discloses a three-rotor continuous internal mixing and extrusion equipment, including a mixer housing, rotors one, two, and three arranged side by side in the mixer housing, a feed port on the mixer housing, and a drive mechanism. Through axial partitioning of "conveyance, pre-dispersion, high-pressure crushing, and homogenization," the conveying function and the ultra-fine dispersion function are decoupled in physical space. The second mixing zone can focus on establishing an extreme shear environment sufficient to break up stubborn carbon black agglomerates, while the first mixing zone and the mixing output zone ensure a high-throughput, stable supply and output of materials. This solves the inherent contradiction in traditional twin-rotor / twin-screw masterbatch production where "increasing blackness requires sacrificing output," enabling continuous and stable production of uniformly dispersed, high-blackness, and crystal-point-free masterbatch with high capacity. The optimized rotor configuration reduces unnecessary shear heat generation and pressure backflow losses, allowing energy to be more concentrated on the effective pigment dispersion process.

The invention discloses a method for controlling fine dispersion of inclusions in SWRH62A hard wire steel. The method specifically comprises the following steps: carrying out composite treatment on smelted molten steel by adopting CaO-MgO-Nb core-shell structure nano composite powder; the preparation method of the CaO-MgO-Nb core-shell structure nano composite powder comprises the following steps that nanoscale Nb particles and a dispersing agent are mixed and then added into absolute ethyl alcohol, and uniform Nb suspension liquid is formed through ultrasonic dispersion; dropwise adding a Ca < 2 + > and Mg < 2 + > mixed solution into the Nb suspension, and then adjusting the pH value to 9.5-10.5 by using ammonia water, so that the Ca (OH) 2-Mg (OH) 2 composite precipitate is uniformly coated on the surfaces of Nb particles to form a core-shell precursor; and carrying out centrifugal separation, washing and vacuum drying on the core-shell precursor, and then carrying out high-temperature calcination. By means of the method, the O content and the Al content in the hard wire steel can be controlled to be 30-40 ppm and 50-60 ppm respectively.

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a titanium-zirconium composite cored wire for high-heat-input welding steel smelting and preparation and application of the titanium-zirconium composite cored wire, the cored wire is composed of a tubular cored wire shell and alloy core powder filled in the tubular shell, and the titanium-zirconium composite cored wire is characterized in that the alloy core powder comprises the following chemical components in percentage by weight: 10-40% of Ti, 15-55% of Zr, 0-5% of Ti, 0-5% of Ti, 0-5% of Ti, 0-5% of Zr, 0-5% of Ti, 0-5% of Ti, 0-5% of Ti, 0-5% of The steel comprises the following components in percentage by weight: 1-5% of C, 10-35% of Si, 3-15% of Mn, 0.3-1.0% of Al, 0.1-1% of Er, 0.1-1% of Y, less than or equal to 0.01% of P, less than or equal to 0.01% of S and the balance of Fe and The titanium-zirconium composite cored wire has the beneficial effects that through compound addition of titanium and zirconium elements, fine dispersion distribution of non-metallic inclusions in steel can be effectively controlled, the low-temperature impact toughness of a 100-1000 kJ / cm-level high-heat-input welding heat affected zone is improved, when the titanium-zirconium composite cored wire is adopted for steelmaking, the high-heat-input welding performance is good, and the service life of the titanium-zirconium composite cored wire is prolonged. According to the steel smelted by adopting the cored wire, the low-temperature impact toughness of a welding heat affected zone is remarkably improved under the large heat input welding condition, and the welding requirement of high-strength steel is met.

The invention relates to a cutting tool comprising a cemented carbide substrate. The substrate comprises, WC grains, a Co binder in an amount of between 3 and 17 wt%, fine dispersed eta phase grains in an amount between 1 and 10 vol%, and wherein the cemented carbide further comprises Ru in an amount so that the weight fraction of Ru / (Ru+Co) is between 0.02 and 0.17. The cutting tool has an optimized hardness / toughness combination.

The utility model discloses a scattering device for graphene preparation, and relates to the technical field of pay-off, the scattering device comprises a crushing box, a crushing mechanism is arranged in the crushing box, a high-speed dispersing mechanism is arranged in a dispersing box, and the output end of a second motor is connected with a rotating shaft. Through the arrangement of the crushing mechanism and the high-speed dispersion mechanism, the crushing mechanism primarily crushes and disperses graphene raw materials through mechanical force, mainly aims at large aggregates and particles, the high-speed dispersion mechanism serves as a second defense line, and the leaked fishes are dispersed again through high shear force and impact force, so that the large aggregates and particles are dispersed again. All agglomerated graphene raw materials can be thoroughly dispersed, the dispersion effect of the graphene is remarkably improved through a dual dispersion mechanism, the particle size distribution of graphene particles is more uniform through the continuous action of preliminary dispersion and fine dispersion, the agglomeration phenomenon is effectively restrained, and the product quality is improved. Therefore, the dispersity and the reinforcing effect of the graphene in the composite material are improved.

A cutting element, in particular for abrasive cut material, is provided that includes a substrate that defines at least one cutting wedge which is formed by first and second wedge surfaces that intersect along a wedge edge. A cutting layer that extends over the first wedge surface and defines a cutting edge which lies on the wedge edge when new. The wear resistance of the cutting layer is greater than wear resistance of the substrate. The cutting layer is configured to define a blade-shaped protrusion that projects beyond the wedge edge due to wear of the substrate in the area of the second wedge surface to provide a self-resharpening cutting edge. The cutting layer or part thereof is formed by means of melt-metallurgical modification of an edge zone of the substrate by in-situ precipitation of finely dispersed inherent hard phases from partial melting of the edge zone of the substrate.

The utility model discloses a scattered fine feeding and conveying device suitable for small standard parts made of special materials, belongs to the technical field of conveying devices, and solves the problems that a feeding and conveying device in traditional counting equipment can only scatter and accurately feed materials with conventional characteristics; and materials with special material, process and performance requirements cannot be finely dispersed, so that the problem of inaccurate material supply is solved. The material distributing device comprises a belt conveyor assembly and a material distributing assembly used for dispersing materials conveyed by the belt conveyor assembly. The material distributing assembly comprises a base with a mounting hole, a vibrator arranged on the base, and a vibration disc arranged on the vibrator, wherein the number of channels of the vibration disc is sequentially increased in a multiplied mode. The feeding device is used for dispersive and fine feeding of small standard parts made of special materials.

This invention discloses a smelting process for high-carbon content superalloy ingots with dispersed carbide distribution. Specifically, the process involves: weighing nickel-based superalloy raw materials, including electrode C, metallic Cr, Co plates, Mo strips, Al beads, sponge Ti, NiB master alloy, and Ni plates; subjecting the nickel-based superalloy raw materials to vacuum induction melting to obtain a vacuum induction ingot; sawing the head of the vacuum induction ingot, polishing the surface, and then using it as an electroslag remelting electrode for remelting and refining to obtain an electroslag remelted ingot; and finally, vacuum arc remelting to obtain a high-carbon content superalloy ingot. In the vacuum arc remelting process of this invention, a larger remelting current is used, creating a narrower paste-like region, reducing the local cooling time of the alloy, and improving the fine dispersion of carbides.

The invention relates to a superfine dispersed illite composite polyacrylic resin emulsion and a preparation method thereof, and belongs to the technical field of fine chemical engineering. The illite is a common clay mineral and has unique structure and performance. According to the characteristics, the invention aims to develop a novel material with specific performance. Firstly, organic illite is obtained through a chemical intercalation method and a surface modification method; a specific acrylic resin monomer is selected for dispersion. And then adding a silane coupling agent to obtain the compound dispersion containing the ultrafine dispersed illite and the acrylic resin monomer. And finally, synthesizing the emulsion by taking the compound dispersion as one of synthetic monomers and adopting a general synthesis method. According to the invention, the problem of non-uniform dispersion of illite in the acrylic resin emulsion is solved, the dispersion uniformity and storage stability of the emulsion are improved, and a new thought and method are provided for preparing a high-performance composite resin emulsion material.

The invention discloses an explosion-proof immersion liquid continuous synthesis and on-line modification device which comprises a shell and a synthesis assembly arranged on the inner wall of the shell, the synthesis assembly comprises a synthesis shell, a storage cavity, a mixing shell, an isolation plate, a stirring shell, a booster pump, a circulating pipe, stirring fan blades, a preheating cylinder, mixed supply fan blades and a transmission assembly, the synthesis shell is embedded in the shell, and the mixing shell is embedded in the transmission assembly. The storage cavity is formed in the bottom of the inner wall of the synthesis shell. According to the synthesis assembly, raw materials are preliminarily mixed through stirring fan blades, then the raw materials are mixed through holes and supplied to fan blades for high-speed centrifugal material throwing to achieve fine dispersion, meanwhile, waste heat of synthesis liquid is recycled through a preheating cylinder by means of a circulation pipeline and used for preheating new raw materials, and energy consumption is greatly reduced; and synthesis and modification assemblies are directly connected to form a seamless assembly line, so that the intermediate material transfer link and the safety risk are eliminated.