10results about How to "Sufficient precipitation" patented technology

The invention discloses an aluminum beryllium enhanced high-conductivity heat-resistant aluminum alloy material and a preparation method thereof, and belongs to the technical field of metallurgical wire rod processing. The aluminum beryllium enhanced high-conductivity heat-resistant aluminum alloy material is prepared from the following components in percentage by weight: 0.12 to 0.16 percent of Si, 0.15 to 0.35 percent of Fe, 0.005 to 0.10 percent of Cu, 0.35 to 0.85 percent of Zr, 0.2 to 0.45 percent of Y, 0.15 to 0.35 percent of Er, 0.005 to 0.03 percent of B, 0.001 to 0.02 percent of Ti, 0.03 to 0.05 percent of Be, less than or equal to 0.5 percent of other impurities and the balance of Al. According to the aluminum alloy single wire, the specific raw material composition is adopted, namely, multiple elements such as Zr, Y, Er and Be are compositely added, and the proportion of the elements is strictly controlled, so that the prepared aluminum alloy single wire achieves synergistic improvement of high strength, high conductivity and excellent heat resistance.

The application discloses a method for improving notch sensitivity of a GH2909 alloy forge piece and the GH2909 alloy forge piece, and comprises the following steps: S1, selecting a rod-shaped blank to be heated for the first time and kept warm; S2, heating the rod-shaped blank in S1 for the second time and keeping warm; S3, placing the rod-shaped blank in S2, which reaches the keeping-warm time, into a forging equipment to be forged into a shape; S4, rapidly cooling the forge piece obtained in S3; S5, performing surface defect treatment on the cooled forge piece; and S6, performing aging heat treatment on the forge piece after the surface defect treatment. The GH2909 forge piece produced by the method has no persistent notch sensitivity problem, and a forge piece with qualified structure and mechanical properties can be obtained.

The application discloses a wastewater copper recovery treatment process of a PCB production line, and belongs to the field of PCB processing. 2+ The wastewater copper recovery treatment process comprises the following steps: determining the Fe 2+ content in wastewater, adding hydrogen peroxide into the wastewater with the molar ratio of hydrogen peroxide to Fe 2+ being 1:2-3, maintaining the pH at 2-2.5, reacting for 1-1.5 hours, removing the precipitate through filtration, and obtaining a first mixed solution; adding the first mixed solution into a three-stage reactor, adjusting the reaction pH of each stage of the three-stage reactor through a slow-release alkali agent, and obtaining a second mixed solution; mixing and reacting the ion imprinting polymer suspension and the second mixed solution through a microreactor; and desorption and electrolysis. The application excludes the influence of other substances on copper recovery.

The VOCs treatment device of the gas station is provided with an air inlet device and a separation device, the separation device is arranged on one side of the air inlet device, the air inlet device is an air inlet separation barrel, a flow dividing channel is arranged in the air inlet separation barrel, a flow dividing pipeline is arranged on the separation channel, and the flow dividing pipeline is communicated with the separation device. A waste residue treatment part is arranged at the bottom of the air inlet separation barrel, airflow distribution can be balanced and local vortexes can be avoided due to the design of flow dividing channels, sub-pipelines arranged in the separation tank body and the treatment reaction barrel form a gridding filtering system, modular combination is achieved through threaded screwing, the VOCs molecular adsorption capacity can be enhanced, and the treatment effect can be improved. And blocked filter holes can be quickly disassembled and cleaned, so that continuous and efficient operation of the system is guaranteed.

The invention discloses a heat-resistant creep-resistant aluminum alloy conductor and a preparation method thereof, and belongs to the field of preparation of aluminum alloy conductive cable materials. The aluminum alloy conductor disclosed by the invention is prepared from the following components in percentage by mass: 0.25 to 0.75 percent of Fe, 0.25 to 0.75 percent of Ni, 0.2 to 1 percent of Me and the balance of aluminum and inevitable impurities. Me is composed of La, Nd, Sc, Zr and Ce. Fe and Ni in a fixed proportion are introduced into an aluminum matrix, meanwhile, specific types of mixed rare earth elements, Sc and Zr elements are introduced, and the technology of large-strain extrusion, multi-pass continuous drawing and subzero treatment matched with continuous heat treatment is utilized; therefore, multiple nanoscale precipitated phases are precipitated in aluminum matrix grains, micron-sized dispersion strengthening phases are formed at grain boundaries, and the strength, the ductility, the conductivity and the creep resistance of the aluminum alloy conductor are improved synergistically through multiple scales and multiple kinds of alloy phases.

The application provides a process for recycling aramid spinning flush material, and belongs to the technical field of high-risk solid waste recycling, and aims to solve the technical problem that PPTA resin is easy to degrade during neutralization and washing recovery.The recycling process comprises the following steps: (1) collecting aramid spinning flush material lumps and cooling at low temperature; (2) soaking the cooled flush material lumps in ice water / ice slurry, replacing the ice water / ice slurry for multiple times until the leaching liquid is weakly acidic and stable; crushing the flush material lumps; (3) soaking the crushed flush material lumps in weakly alkaline ice water / ice slurry to neutralize residual acid, and then crushing the flush material lumps again by using a crushing device, and washing, drying and obtaining recycled PPTA resin particles.The application realizes harmless treatment and resource utilization of the aramid spinning flush material containing a large amount of sulfuric acid and aramid resin generated during aramid spinning, improves economic benefits and reduces environmental pollution.

This invention belongs to the field of dressing preparation technology, specifically relating to a mussel protein dressing with anti-inflammatory, antibacterial, moisturizing, repairing, and wound-healing effects, and its preparation method. The invention comprises the following raw materials by weight: 15-25 parts mussel adhesive protein ferment, 2-5 parts reed extract, 6-10 parts geranium extract, 4-8 parts mannitol, 10-15 parts glycerin, 0.6-1 part sodium chloride, 0.2-0.5 parts p-hydroxyacetophenone, 1-2 parts 1,2-hexanediol, 0.05-0.1 parts ectoine, and 100-200 parts water. This invention utilizes a specific combination of mussel adhesive protein ferment, reed extract, and geranium extract to facilitate the synergistic effect of each active substance and fully release its efficacy. Therefore, the technical solution of this invention has the advantages of more comprehensive functions and more significant effects, enabling anti-inflammatory, antibacterial, moisturizing, repairing, and wound-healing effects.

The application relates to the field of reclaimed water reuse, and discloses a reclaimed water reuse percolation filter device which comprises a filter device, a fixed inner cavity is arranged in the middle of the top end of the filter device, a plurality of filter screens are arranged in parallel on the inner cavity, a buffer frame is arranged in the middle of the top end of the filter device, a plurality of water draining holes are arranged in the bottom of the inner wall of the buffer frame, a fixed frame is fixedly arranged on the top of one side of the inner wall of the buffer frame, a collecting hopper is fixedly arranged in the middle of the top end of the fixed frame, a plurality of fixed holes are arranged on the two sides of the outer surface of the collecting hopper, and a wide-mouth cover is integrally arranged on the upper surface of the collecting hopper; the buffer frame, the collecting hopper and the stirring mechanism and other structures are arranged, water flows more stably and slowly through the water draining holes into the filter screens below, the impact force of the water flow on the filter screens is effectively reduced, filter screen damage caused by water flow impact is avoided, the service life of the filter screens is prolonged, the equipment maintenance cost is reduced, the filtering effect of the filter screens is improved, and the purification degree of the reclaimed water is improved.

The invention relates to the technical field of wisdom education, in particular to a wisdom education interactive teaching system and method, and the system comprises a multi-mode interactive collection module, an AI intelligent teaching engine module, an immersive interactive execution module, a personalized resource push module, a full-process data closed-loop module and a cross-platform compatible interface module which are in communication connection in sequence. According to the intelligent education interactive teaching system and method, the defects that an existing interactive teaching system is single in interaction form, insufficient in personalized adaptation, not closed-loop in data and poor in cross-platform compatibility are overcome, the interaction participation degree is improved, the teaching adaptation precision is improved, and the intelligent education interactive teaching system and method are suitable for various teaching scenes such as the K12 stage, higher education, vocational education and adult continued education and have good application prospects. Personalized interaction and intelligent management of all types of teaching activities such as theory teaching, exercise drilling, group cooperation, virtual experiments and project-based learning can be realized.

This invention relates to a high-strength multiphase hot-rolled wire rod for 2300MPa grade stranded wire and its manufacturing method. The method involves rolling high-carbon Mo-V wire rods into wire rods, followed by online molten salt segmented quenching and isothermal treatment. The wire rods undergo a first-stage molten salt treatment with a cooling rate of ≥39℃ / s, transitioning from austenitic to bainitic phase and promoting partial austenite transformation. A second-stage molten salt treatment further increases the molten salt temperature, promoting the decomposition of untransformed residual austenite into sorbite, followed by isothermal tempering. Finally, slow cooling via roller conveyors results in a hot-rolled wire rod with a microstructure consisting of tempered bainite, tempered sorbite, and ferrite, forming a multiphase microstructure. This method enables multiphase microstructure control and online toughening, balancing material cost and production efficiency, achieving a tensile strength of 1552~1602MPa and a reduction of area of ​​32%~38%, thus eliminating the need for offline heat treatment and enabling efficient production of ultra-high-strength stranded wire.