39results about How to "Short production process" patented technology

This invention relates to a tandem solar cell, its fabrication method, and its application. The tandem solar cell comprises a top layer of perovskite cells and a bottom layer of back contact cells stacked sequentially from top to bottom. The perovskite cells include a front glass layer, a first passivation layer, a perovskite composite layer, and a second passivation layer stacked sequentially from top to bottom. The perovskite composite layer includes at least two polar perovskite regions and perovskite electrodes disposed on both sides of each polar perovskite region in a first direction. The back contact cells include a back glass layer, a back electrode layer, and a crystalline silicon layer stacked sequentially from bottom to top. In the solar cell provided by this invention, the perovskite composite layer of the perovskite cell is designed with a specific structure using polar perovskite and perovskite electrodes to form a built-in electric field, driving the directional movement of electron-hole pairs to generate current. Combined with the introduction of the back contact cells, more solar radiation is received, thus improving the performance of the tandem solar cell.

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 present application belongs to the field of non-ferrous metal dressing process, and relates to a grinding-flotation short process separation method for processing fine molybdenite. The process uses a high-pressure roller mill and a tower mill crushing and grinding process to replace the fine crushing and two-stage continuous ball milling operation in the traditional crushing and grinding process, and uses a flotation column to replace a flotation machine for flotation operation, thereby simplifying the production process flow of molybdenite. The present application has the advantages that the high-pressure roller mill and the tower mill change the crushing and grinding mode of the ore, significantly reduce the crushing and grinding energy consumption, and more effectively protect the flaky structure of molybdenite. The particle size distribution of the grinding product is reasonable, and the amount of fine and micro-fine particles (-20 μm) is reduced, thereby creating good conditions for the flotation operation. The flotation column is used for flotation, compared with the flotation machine, the recycling of middling slurry is reduced, the fine molybdenite that has been dissociated is fully recovered, and the recovery rate of molybdenite is improved. In addition, the flotation column flotation is beneficial to obtaining high-grade concentrate product, and improves the separation index and economic benefits of molybdenite.

The application discloses a preparation method, product and device of a square core optical fiber preform. The preparation method comprises the following steps: (1) making the rotating central axis of a Leilo triangular drill bit coaxial with the geometric central axis of a circular cavity cladding sleeve, and drilling a rounded square with the width d as the side length by using the Leilo triangular drill bit to obtain a square cavity cladding sleeve; (2) sleeving a square core rod with the width d' into the square cavity cladding sleeve, and stretching or fusing the square core rod into a circular solid rod; and (3) manufacturing the square core optical fiber preform according to the designed shape size and refractive index profile. The Leilo triangular drill bit is designed according to the width fixing principle of the Leilo triangular structure, and can be used for square hole processing of brittle materials such as quartz glass. The optical fiber prepared by using the square core rod and the square hole sleeve combination drawing reduces the probability of uncontrollable core-cladding interface air line occurrence caused by the original square core rod and circular sleeve combination drawing, and guarantees the reliability of the optical fiber.

The invention discloses an internal insulation steel pipe special cable and a four-groove roller reducing mill thereof, and relates to the technical field of cables, the cable comprises a steel pipe layer and convex ribs integrally processed on the outer surface of the steel pipe layer; the reducing mill comprises a fixing ring; the rolling assembly is rotationally installed in the fixing ring, the rolling assembly comprises a rotating ring and four rollers distributed in the rotating ring in a surrounding mode, and a gap used for extruding a steel pipe layer of the cable to form a convex rib is formed between every two adjacent rollers; and the driving assembly is used for driving the rolling assembly to rotate in the fixing ring so as to form a convex rib which extends in the axial direction and is of a linear structure or a spiral structure on the surface of the cable. According to the invention, through the relation between the revolution speed of the roller and the advancing speed of the cable, the convex ribs with axial linear structures or the convex ribs with different leads and spiral structures can be flexibly processed, the torsional strength, the heat dissipation efficiency and the installation guidance quality of the special cable in different laying environments are improved, and the customization requirements of high-end markets are met.

This invention relates to the field of insulating aluminum busbar technology, and in particular to an insulating aluminum busbar for high-voltage connection in a power battery system, its preparation method, and its application. An insulating aluminum busbar for high-voltage connection in a power battery system includes: a three-dimensionally bent aluminum alloy substrate; a ceramic insulating layer, which covers the outer surface of the three-dimensionally bent aluminum alloy substrate and is metallurgically bonded to it; and two conductive ends, which are located at both ends of the three-dimensionally bent aluminum alloy substrate, with a nickel sheet fixedly connected to each conductive end and covered with a heat-shrink tubing. This application achieves metallurgical bonding between the ceramic insulating layer and the aluminum substrate, resulting in extremely strong bonding and solving the problem of coating peeling. The two conductive ends located at both ends of the substrate ensure the conductivity of the high-voltage connection and provide secondary protection for the welded area through the heat-shrink tubing, improving connection reliability.

The invention relates to a manufacturing method of a split flexible gear, which is applied to the field of welding and comprises the following steps: respectively manufacturing a cup body and a flange plate; putting the cup body and the flange plate into cleaning equipment, and performing surface treatment on the cup body and the flange plate; the cup body is assembled on the flange plate to form a workpiece; a brazing filler metal and a stop-off agent are placed on the lap joint face between the cup body and the flange plate; the whole workpiece is put into a vacuum brazing furnace, and a vacuum system is started to vacuumize the interior of the vacuum brazing furnace; and the temperature in the vacuum brazing furnace is increased to the target brazing temperature. The mode of integrally machining the flexible gear through a complex deep-cavity thin-wall part in the prior art is optimized and decomposed into two relatively simple parts to be welded and machined, the production process is optimized and shortened while raw materials are saved, a heat affected zone can be greatly reduced through vacuum brazing, and the production quality and the production efficiency of the flexible gear are improved.

The utility model relates to a bottle plug pressing device which comprises a conveying belt, a hydraulic cylinder, a base, first clamps symmetrically and fixedly arranged on the conveying belt, bottles arranged on the conveying belt and limited by the first clamps, a pressing mechanism arranged on the hydraulic cylinder and a second clamping mechanism arranged on the base. The pressing mechanism comprises a connecting plate fixedly arranged on the hydraulic cylinder, a bottle cap mounting assembly arranged on the connecting plate, a first rubber plug mounting assembly arranged on the connecting plate and a second rubber plug mounting assembly arranged on the connecting plate. The rubber plug and the bottle cap are installed at the same time by arranging the pressing mechanism, multiple machines are not needed, multiple persons are not needed to place the rubber plug and the bottle cap, the production process is shortened, and the production efficiency is improved.

The utility model relates to a device that dispels water droplets on the surface of product after cleaning, including air -dry storehouse, drying storehouse, the drying storehouse is located the rear end of air -dry storehouse, the air -dry storehouse includes frame, the inside installation of frame has the conveying roller of parallel arrangement of multiple, the bottom of conveying roller is provided with the water collecting groove, the water collecting groove is fixed on the frame, the upside of conveying roller is provided with the air pipe support, the air pipe support is fixed on the frame, the air pipe support is fixed with multiple air pipes, the lower extreme of air pipe is connected with the nozzle, the utility model effectively reduces production process flow, reduces manual operation cost, improves cleaning efficiency, and the cleaning effect is good, and the product qualified rate is high, avoids the high -intensity operation of staff.

This invention relates to the field of beer production technology and discloses a mixing device and process for beer production. The device includes a tank with an upper water pipe and a lower liquid pipe at its upper and lower ends, respectively. The side wall of the tank has inlet and outlet ports. An internal filter screen is installed inside the tank. The tank also contains a stirring shaft, a rotating ring, a vertical rod, an anchor-shaped paddle, and a tillering paddle. The stirring shaft is rotatably mounted inside the tank. This mixing device, through the arrangement of the stirring shaft, rotating ring, vertical rod, anchor-shaped paddle, and tillering paddle, and in conjunction with a lifting control mechanism, achieves synchronous reverse lifting and lowering movements of the anchor-shaped paddle and the tillering paddle. This eliminates the need to transfer the mash and malt between the mashing tank and the filter tank, thus completing the integrated mashing and malt washing process. This effectively shortens the production process, reduces equipment footprint, avoids heat loss and material residue during wort transfer, improves raw material utilization and production efficiency, reduces the risk of microbial contamination, and ultimately ensures the quality of the produced beer.

A 7XXX aluminum alloy profile comprises the following components: less than or equal to 0.1% of Si, less than or equal to 0.1% of Fe, 0.5%-0.55% of Cu, less than or equal to 0.1% of Mn, 2.3%-2.6% of Mg, 7.1%-7.5% of Zn, 0.05%-0.1% of Zr, less than or equal to 0.05% of Ti, 0.05%-0.1% of Er and the balance of aluminum and other inevitable impurity elements, the content of each of other elements is less than or equal to 0.05%, and the total content is less than or equal to 0.15%. The preparation process of the on-line water-cooling shaping-free 7XXX aluminum alloy comprises the following steps: proportioning according to the mass fraction, smelting the aluminum alloy, refining, standing, casting, homogenizing a cast ingot, extruding a sectional material, cooling the sectional material, stretching the sectional material, aging the sectional material and measuring the flatness. The aluminum alloy section manufactured through the manufacturing technology has good yield strength, the yield strength can exceed 530 Mpa, the ductility can reach 10% or above, in the machining process, the 7XXX aluminum alloy can reach a plane without manual shaping after being subjected to water-cooling straightening, production can be conducted at a high speed, extrusion defects do not occur, and the product quality is improved. The mechanical property of the material is further improved.

The invention belongs to the technical field of high-temperature alloy smelting, and relates to a process for improving the surface quality of a first-class Ni-Fe-Cr-based high-temperature alloy consumable cast ingot and application. Comprising the following steps: firstly, performing vacuum induction melting on a high-temperature alloy to obtain a high-temperature alloy VIM electrode; then, the high-temperature alloy VIM electrode is subjected to protective atmosphere electroslag smelting, and a high-temperature alloy ESR electrode is obtained; and the high-temperature alloy ESR electrode is subjected to annealing treatment, finally, the high-temperature alloy ESR electrode is subjected to vacuum consumable smelting, and a high-quality high-temperature alloy ingot is obtained. According to the high-temperature alloy cast ingot produced through the method, forging cogging can be carried out after direct homogenization without scaling treatment, the production process is shorter, the delivery pressure is smaller, and the cost is lower.

The utility model discloses a degradable paperboard high-strength pre-indentation adjusting mechanism and die cutting equipment, and belongs to the technical field of paperboard production. In order to solve the problem of low efficiency caused by separation of cutting and indentation procedures in existing carton processing, the equipment combines the two procedures through integrated design. The pre-creasing adjusting mechanism is composed of a fixing frame, a sliding creasing ring and an adjusting assembly, a threaded component is used for driving a U-shaped frame to drive the creasing ring to ascend and descend, and the operation height can be adjusted to adapt to different paperboard thicknesses. The die cutting equipment integrates a supporting table, an electric push rod and a buffer mechanism, a model ring cutter is elastically connected with a model frame through a compression spring, under driving of the electric push rod, indentation is completed firstly, then die cutting is executed, and automatic demolding after cutting is achieved through the elastic force of the spring. According to the equipment, through the synergistic effect of the indentation ring height adjusting structure and the buffer demolding mechanism, the production process is remarkably shortened, the machining efficiency is improved, and the equipment is suitable for efficient forming machining of degradable paperboards.

The invention discloses a composite brake drum steel shell hobbing all-in-one machine, which relates to the technical field of brake drum forming, and comprises a machine body, a rolling mold, a material lifting frame, a hobbing cutter assembly and a rolling wheel assembly, the upper side of the machine body is connected with a supporting plate in a supporting mode through a plurality of guide columns, the supporting plate is connected with a movable beam through a driving device, the guide columns are sleeved with the movable beam in a sliding mode, the movable beam can be driven by the driving device to move, and a rotatable positioning pressing disc is installed on the lower side of the movable beam. The roll forming die is mounted on the upper side of the machine body and corresponds to the positioning and pressing disc; the material lifting frame is hoisted on the lower side of the movable beam, and an avoiding hole used for avoiding the roll forming mold is formed in the middle of the material lifting frame. The rolling cutter assembly is connected to one side of the machine body in a sliding mode and used for rolling and cutting the steel shell arranged on the rolling mold in a sleeving mode; the roll forming wheel assembly is connected to the other side of the machine body in a sliding mode and used for conducting roll forming on the steel shell arranged on the roll forming mold in a sleeving mode. In this way, efficient integration of steel shell cutting and rolling forming procedures can be achieved, and the production efficiency of the steel shell is improved.

This invention relates to the field of spring clip molding technology, and particularly to a spring clip molding mold and process based on long carbon fiber reinforcement. The mold includes an upper pressure plate, a lower pressure plate, and an upper pressure head. An upper mold cavity seat, a middle transition body, and a bottom support leg are vertically arranged between the upper and lower pressure plates. A push rod is provided on the inner side of the bottom support leg. A cylindrical mold cavity hole is provided inside the upper mold cavity seat, and two L-shaped side sliders and a central core assembly are arranged inside the cylindrical mold cavity hole. The process steps include: mixing long carbon fibers with a thermoplastic matrix, heating to obtain a melt, transferring the melt into a mold, closing the mold and applying pressure, and obtaining a hollow cylindrical blank after holding pressure and cooling. The hollow cylindrical blank is then cut and machined. This invention eliminates the prepreg preparation process, resulting in a shorter process flow, higher production efficiency, better uniformity of spring clip dimensions, continuous and intact fibers in the groove area, and significantly improved mechanical properties.

This invention provides a dual-support hydrocracking catalyst, its preparation method, and its application. The dual-support hydrocracking catalyst comprises a composite support and an active metal. The composite support is composed of USY molecular sieve and MCM-41 mesoporous molecular sieve. The active metal comprises at least two transition metal elements. The mass ratio of the composite support to the active metal is (2~5):1; the mass ratio of the USY molecular sieve to the MCM-41 mesoporous molecular sieve is (0.5~2):1. The supported hydrocracking catalyst provided by this invention constructs a microporous-mesoporous synergistic pore structure, balancing activity and stability. By using a dual support composed of USY and MCM-41 in a specific ratio, the strong acidity and high shape selectivity of USY molecular sieve are retained, while the mesoporous structure of MCM-41 solves the problem of limited diffusion of macromolecular raw materials, significantly improving the catalyst's carbon-holding capacity and significantly improving its resistance to colloids and carbon deposition.

This invention relates to the field of welding equipment technology, specifically to a plasma arc welding equipment for stainless steel cookware with slag removal function. It includes a plasma arc welding machine body and a robotic arm mounted thereon, as well as a slag removal mechanism mounted on the mounting base and located behind the welding mechanism in the direction of travel. The slag removal mechanism includes a slag removal scraper that can float up and down relative to the mounting base and an air extraction device, which generates negative pressure at the slag removal scraper. By integrating the welding mechanism, slag removal mechanism, and cooling mechanism onto the same mounting base, and utilizing the relative displacement of the floating slag removal scraper when in contact with the workpiece, automatic control of the three actions—welding, slag removal, and cooling—is triggered, achieving integrated continuous operation of welding, immediate slag removal, and rapid cooling. Immediately after slag removal, spray cooling is applied to the weld seam, which can rapidly reduce the weld temperature and effectively inhibit high-temperature oxidation and discoloration.

The invention relates to the technical field of waterproof membranes, in particular to a waterproof membrane and a preparation method thereof.The waterproof membrane is composed of a polyimide (PI) base membrane, a solvent and a hydrophobing agent, polyimide is a continuous phase, the hydrophobing agent is evenly dispersed among polyimide molecular chains through the solvent, and an integrated composite structure with a super-hydrophobic surface, breathable channels and sound transmission channels is formed; the preparation method comprises the following steps: dissolving polyimide in a solvent to form a homogeneous solution, adding a hydrophobic agent into the obtained solution, carrying out ultrasonic dispersion treatment to form a homogeneous mixed solution, carrying out film forming on the mixed solution through a tape casting or spinning process, and carrying out drying and heat treatment on the film-formed material to obtain the composite film. Molecular-level uniform dispersion of a hydrophobic agent is realized in a polyimide base material, and the hydrophobic agent is directionally enriched on the surface in a film forming process, so that a super-hydrophobic layer with micro-nano roughness is formed, the waterproof performance of the material is greatly improved, and the water contact angle is far beyond that of a common polyimide film.

The invention relates to the technical field of cleaning, and discloses a photo frame material surface automatic cleaning device and method.The photo frame material surface automatic cleaning device comprises a roller conveyor and a cold air cleaning structure installed at the front end of the roller conveyor, the surface temperature of a photo frame solid wood material is reduced through cold air, water vapor is condensed on the cold air, and a condensate water film neutralizes electrostatic charges between wood and dust; and the weight of dust particles is increased, and the dust particles are mutually bonded into clusters and are matched with gas cleaning. Through a low-temperature induced instantaneous micro-condensation mechanism, static electricity is neutralized, dust is agglomerated, dust bolts are formed, thorough stripping of deep dust on the surface of the wood and in micropores is achieved in cooperation with bidirectional high-pressure airflow, and the problems that the surface is clean and deep residues exist in a traditional cleaning method are solved; meanwhile, microcosmic burrs are passivated through micro swelling and a recovery effect, surface stress is pre-released, surface tension and pore wetting balance are unified, the surface smoothness of the wood is improved, an ideal interface is created for subsequent degreasing and paint spraying, and coating defects are reduced.

The application discloses a kind of corona discharge ion wind auxiliary chemical mechanical polishing processing method for ceramic, comprising the following steps: step S1, ceramic workpiece is immersed in alkaline abrasive liquid;Step S2, ion wind is released using ion wind generating device, ceramic workpiece is in ion wind covered area, ion wind generating device is installed in the spindle support of grinding machine tool, ion wind generating device moves together with spindle, so that ion wind released by ion wind generating device is aligned with the processing area of ceramic workpiece in real time;Step S3, active oxygen free radicals contained in ion wind dissolve into alkaline abrasive liquid, and continuously occur chemical reaction with ceramic workpiece surface in processing process and produce soft layer, under the stable state of ion wind, ceramic workpiece surface is polished.The application provides a kind of corona discharge ion wind auxiliary chemical mechanical polishing processing method for ceramic, improves material removal efficiency, while improving surface quality and inhibiting surface damage, and regulates wettability.

The invention relates to the technical field of BHET recycling, and discloses a method for preparing antimony-free cation dyeable polyester fibers by adopting recycled BHET, and the method comprises the following steps: S1, adding a titanium catalyst and titanium dioxide ethylene glycol mixed slurry into the recycled BHET, and carrying out pre-polycondensation reaction to prepare a mixture I; s2, adding a branched chain agent, a stabilizer and sulfonate into the other part of recovered BHET, and carrying out pre-polycondensation reaction to prepare a mixture II; and S3, mixing the mixture I and the mixture II, carrying out two-stage polycondensation reaction, and carrying out melt spinning to obtain the polyester fiber. Through combination of a parallel pre-polycondensation production process and an antimony-free catalytic system, the problem of polymerization instability caused by purity fluctuation of recovered BHET and impurity residues is solved, efficient compatibility of recovered raw materials and a CDP functional system is realized, and the industrialization process of regenerated extinction CDP is promoted.

The application relates to high-sphericity nano tetragonal barium titanate for MLCCs and a preparation method thereof. The technical scheme is as follows: a titanium source, a dissolving agent and potassium perchlorate are mixed to obtain mixed material A; the mixed material A is heated twice under air condition, is preserved, is naturally cooled to obtain a reaction product; the reaction product is washed with distilled water I, is separated, is dried to obtain titanium dioxide powder; the titanium dioxide powder and barium oxide are mixed to obtain mixed material B; the mixed material B, ethylene glycol, pure water and an anionic surfactant are mixed to obtain a mixed solution; the mixed solution is moved to a polytetrafluoroethylene reaction kettle, is placed in a microwave heating furnace, is heated, is preserved, is naturally cooled and is filtered; the filtered product is washed with distilled water II, is separated, is dried to obtain high-sphericity nano tetragonal barium titanate for MLCCs. The product prepared by the application has high purity, high sphericity, small particle size, good dispersity and high tetragonality.

The invention relates to the technical field of forming processes, in particular to a multi-density sponge forming mold and an integrated forming method.The forming mold comprises an upper mold and a lower mold, and a mold cavity used for sponge foaming forming is defined after the upper mold and the lower mold are closed; the movable partition is arranged in the mold cavity; the movable partition is provided with a first position and a second position; when the movable partition is located at the first position, the movable partition serves as a physical barrier to divide the mold cavity into a first cavity and a second cavity which are isolated from each other, and the first cavity and the second cavity are used for physically isolating liquid sponge raw materials during first-time material injection; and when the movable partition is located at the second position, the movable partition relieves physical isolation between the first cavity and the second cavity, so that the first cavity communicates with the second cavity, and the sponge foamed in advance and the raw materials injected subsequently make contact at the interface and are integrally fused.

The application discloses a kind of porous alumina microspheres and its preparation method, the method comprises the following steps: 1) configuration preparation porous alumina microspheres precursor sol;2) the sol is carried out spray drying, and porous alumina microspheres precursor is prepared;Porous alumina microspheres precursor is prepared by heat treatment, and porous alumina microspheres are obtained.The porous alumina microspheres provided by the application are prepared by heat treatment of porous alumina microspheres precursor under flow field, and the porous alumina microspheres prepared by the method have the advantages of large scale, low cost, simple operation, short preparation process.

A high-strength, high-toughness, and wear-resistant alloy steel and its preparation method are disclosed, belonging to the field of wear-resistant materials technology. The method employs a medium-frequency induction furnace for melting. First, ordinary scrap steel, a carbon raiser, ferroniobium, copper plates, and ferrochrome are mixed and heated in the furnace until the molten steel is clear. Then, ferrosilicon and ferromanganese are added sequentially, followed by aluminum blocks. Four to six minutes after the aluminum blocks are added, ferroboron is finally added. The molten steel is fed through a metal-coated wire outside the furnace to improve its quality. During the casting process, a mixture containing lanthanum, cerium, rare earth ferrosilicon powder, and pure iron powder is added in slurry to further refine the solidification structure of the steel. After quenching and tempering heat treatment, the obtained wear-resistant alloy steel exhibits high hardness and strength, good toughness, and excellent wear resistance. Its widespread application has significant economic and social benefits.

The invention relates to the field of polyester synthesis processing, and discloses an extinction cationic dyeable polyester melt direct spinning method, which adopts a double-path parallel production method, in the path I, titanium dioxide, dibasic acid and dihydric alcohol form a prepolymer I, in the path II, dibasic acid, dihydric alcohol, a stabilizer, a branched chain agent and three monomers form a prepolymer II, and in the path II, the prepolymer I and the prepolymer II form a prepolymer II. Mixing the prepolymer I and the prepolymer II, and performing polycondensation and melting direct spinning; according to the method, titanium dioxide and a third monomer are blocked through the molecular chain length of a prepolymer, so that the coordination effect of titanium dioxide and the third monomer is limited, a micro-branched molecular chain segment with a spatial net-shaped confinement is generated through a branched chain agent, agglutinated particles formed during condensation polymerization of three monomers are avoided, and the stability of titanium dioxide is improved. The stabilizer is used for inhibiting esterification and dehydration of ethylene glycol to generate diethylene glycol and inhibiting yellowing of polyester products; according to the method, the normal-pressure extinction method for direct spinning of the cationic dyeable polyester melt can be achieved, the process is simple, mass production can be achieved, and the product quality is stable and excellent.

This invention relates to the field of environmentally friendly dragon dance yarn preparation technology, specifically a high-end intelligent control colored environmentally friendly dragon dance yarn false twist texturing machine. It includes a roller machine and a color-changing component uniformly distributed at the roller machine's inlet end for color modification. The color-changing component includes a second ring tube uniformly distributed on one side of the roller machine and connected to it. A central ring tube is sealed on the side of the second ring tube away from the roller machine, and a first ring tube is installed at the other end of the central ring tube. Both the first and second ring tubes are sealed at the ends away from the central ring tube. The inner cavity of the first ring tube is provided with an outwardly extending feeding module, and the inner cavity of the central ring tube is provided with a dyeing module for color modification. The beneficial effect of this invention is that by integrating the color-changing component at the roller machine's inlet end, the heating and melting of the masterbatch, quantitative conveying, and uniform coloring are integrated into the same process of yarn texturing and texturing, significantly shortening the production process and avoiding the wastewater pollution problems caused by traditional liquid dyes.

The application provides a method for preparing a ferrite-rolled ultra-low-carbon bake-hardening steel in an ultra-short process and a steel strip, and belongs to the technical field of metallurgy. The method completely omits the cold rolling and continuous annealing process, and comprises the following steps: heating a slab with a predetermined chemical composition; rough rolling the slab in an austenite zone to obtain an intermediate slab; finish rolling the intermediate slab in a ferrite zone, wherein the cumulative equivalent strain of the finish rolling is greater than or equal to 2.3, and a steel strip is obtained; coiling the steel strip, wherein the coiling temperature is 680-720 DEG C, and the coiling is kept for 30-60 min, and then the steel strip is cooled to room temperature to obtain a target steel strip. The method for preparing a ferrite-rolled ultra-low-carbon bake-hardening steel in an ultra-short process can directly obtain an ULCBH steel with high deep-drawing performance and high bake-hardening performance in a hot-rolled state.

The application discloses a preparation method of regenerated cashmere colored yarn air yarn, and relates to the technical field of textiles. The application is characterized in that the hard return yarn of the stock color cashmere yarn of the roving warehouse is developed and carded to form the regenerated cashmere, the hard return yarn of the stock color cashmere yarn is not used, and therefore the quality of the regenerated cashmere is better. The hard return yarn of the stock color cashmere yarn of the worsted spinning is selected as the colored yarn, and the colors are reasonably matched. The main process flow of the application is: wool blending, wool carding, spinning, bobbin winding, doubling and double twisting. Compared with the prior art, the application improves the production process, so that the quality of the air yarn produced by the regenerated cashmere fiber is not worse than that of the air yarn produced by the normal cashmere fiber. Meanwhile, the cashmere fiber naturally lost in the production process can be used as the colored yarn. The application not only enables the abandoned cashmere fiber to be reused, but also greatly increases the use rate of the cashmere fiber in the normal production activities, and realizes the sustainable development.