34results about How to "Optimize process flow" patented technology

This invention discloses a method for preparing aviation fuel with different functional components based on the directional dismantling of organic waste molecular structure, belonging to the field of organic waste recycling. The method uses waste plastics, waste rubber, and waste oils as raw materials, employing a vertically connected two-stage reactor. Multiple types of mixed organic waste are co-pyrolyzed in the first-stage reactor, and the pyrolysis volatilization products directly enter the second-stage reactor for gaseous catalytic hydrogenation, ultimately yielding a mixed aviation liquid fuel containing different functional components. This method utilizes the molecular structure of organic waste itself to prepare liquid fuel products such as isoalkanes and aromatics, replacing the isomerization and aromatization reactions in existing catalytic processes. It has advantages such as a simple process flow and simple catalytic reaction, and can quantitatively prepare mixed aviation fuel composed of two or more functional components from n-alkanes, isoalkanes, aromatics, and cycloalkanes according to actual applications.

The application provides a flash memory device and a manufacturing method thereof. After removing a hard mask layer, a floating gate material layer is etched to form a floating gate under a first sidewall and form a floating gate tip at the top of the sidewall of the floating gate away from a source line. The application optimizes the process flow of the flash memory device, cancels the etching step of the floating gate material layer before the forming step of the first sidewall, and forms the floating gate tip at the top of the sidewall of the floating gate away from the source line, which reduces the influence of the thickness variation of the floating gate on the sharpness of the floating gate tip and facilitates the further size reduction of the flash memory device. Further, the application exposes the floating gate tip by shortening the thickness of the first sidewall, which optimizes the erasing effect of the flash memory device.

The invention discloses a construction method for integration of an anti-static floor and a cable support of a secondary equipment room of a transformer substation, and relates to the field of transformer substation constructional engineering and electrical installation. Traditional construction has the problems of long construction period, different quality, poor operation environment and inconvenience in later debugging. The method comprises the following steps: measuring and typesetting on site, and setting an elevation control line and a division positioning line in an elastic manner; cleaning the terrace and laying a grounding cable led out from the main grounding grid in advance; the cable support is positioned and assembled according to the grid division positioning lines, the cable support is reliably connected with the grounding cable, and a groove box cross arm of the cable support is used for bearing the cable; and after the cable is laid, an anti-static floor is installed at the top of the cable support, and edge closing treatment is carried out. According to the method, on-site efficient assembly is achieved through the standardized and modularized construction process, the construction period is shortened, the quality is improved, and the operation and debugging environment is optimized.

This invention relates to a method for preparing a core-shell structured Al-Zn@Al2O3 composite phase change thermal storage material, belonging to the technical field of medium- and high-temperature phase change thermal storage materials. This invention involves adding an aluminum powder suspension to an HCl solution and stirring at 45–65°C for 5–10 minutes. Gelatin is then added, and the mixture is reacted at 45–65°C with stirring for 10–20 minutes to obtain solution A. NH4F solution is slowly added to solution A at 40–60°C with stirring, and the reaction continues for 30–60 minutes. A mixture of zinc sulfate solution and ethylenediaminetetraacetic acid is then added, and the mixture is reacted for 3–5 hours. After standing, the solid and liquid are separated. The solid is washed 3–5 times alternately with anhydrous ethanol-water-anhydrous ethanol and dried to obtain solid B. Under a protective atmosphere, solid B is uniformly heated to 600–660°C and calcined at high temperature for 2–4 hours to obtain aluminum-zinc alloy powder. Under an air atmosphere, the aluminum-zinc alloy powder is uniformly heated to ~800°C and calcined at high temperature for 1–4 hours to obtain a core-shell structured Al-Zn@Al2O3 high-temperature phase change heat storage material.

The utility model discloses a kind of pre-coating forming structures of LNG storage tank inner wall stamping corrugated board, it is related to liquefied natural gas storage tank inner wall metal shielding layer manufacturing technical field, the utility model is provided with coating device, and in coating device, adopt Bernoulli chuck adsorption leveling protective film, utilize non-contact negative pressure principle, ensure that protective film is evenly stressed, smooth in the process of gluing, with the glue transfer in the continuous rotation process of annular gluing tape, can realize the even, quantitative coating of glue on protective film, significantly improve the stability and consistency of coating quality, can be before metal corrugated board base material stamping forming, beforehand on its upper and lower surface accurately and stably stick protective film, form physical isolation layer, to fundamentally avoid the generation of friction mark, indentation, scratch and microcrack etc. Defects, greatly guarantee the original cleanliness and integrity of plate surface.

The invention relates to the technical field of building materials, and discloses artificial coarse aggregate and a preparation method thereof. The artificial coarse aggregate is prepared from the following raw materials in parts by weight: 100 parts of sea sand; 12 to 20 parts of a binder; 0.06 to 0.18 part of a coalescing agent; 12 to 20 parts of water; wherein the binder is an acrylate copolymer emulsion with the solid content of 50%, and the coalescing agent is propylene glycol monobutyl ether. The preparation method comprises the steps of raw material pretreatment and mixing, adhesive solution preparation, rolling agglomeration granulation, curing maintenance, screening and the like. By controlling the particle size grading of the sea sand, the use amount of the binder and process parameters, the prepared artificial coarse aggregate is in an irregular polygonal form, has a rough and porous surface, has proper bulk density, cylinder compressive strength and water absorption, and can meet the use requirements of C25-C35 grade lightweight concrete. According to the method, efficient utilization of sea sand resources is achieved, the process is simple, energy consumption is low, and the method has good engineering application prospects.

This invention discloses a high-performance corrosion-resistant non-magnetic stainless steel and its preparation method, belonging to the technical field of stainless steel materials. It solves the problems of existing non-magnetic stainless steels where the mechanical properties and corrosion resistance cannot be simultaneously and effectively improved, and the microstructure uniformity is poor. The high-performance corrosion-resistant non-magnetic stainless steel comprises, by mass percentage: 18.30% ≤ Cr < 21.00%, 2.60% ≤ Mo ≤ 3.00%, 4.10% ≤ Ni ≤ 4.50%, 20.50% < Mn ≤ 22.00%, Si ≤ 0.4%, 0.015% < Nb ≤ 0.03%, P ≤ 0.025%, S ≤ 0.01%, C ≤ 0.02%, 0.80% < N ≤ 0.85%, with the balance being Fe and other unavoidable impurities. The high-performance corrosion-resistant non-magnetic stainless steel of this invention has fine and uniform grains, and excellent mechanical properties and stress corrosion resistance.

The invention provides a clay type lithium ore external field enhanced resource comprehensive utilization method, and relates to the field of hydrometallurgy. The method comprises the following steps: uniformly mixing clay type lithium ore with concentrated sulfuric acid, and carrying out low-temperature curing to obtain clinker; mixing the clinker with water, and then carrying out leaching reaction to obtain a lithium-rich aluminum leaching solution; carrying out evaporative crystallization on the lithium-rich aluminum leachate to obtain a mixed crystal of lithium sulfate and aluminum sulfate; performing high-temperature pyrolysis reaction on the mixed crystal to obtain an oxide; carrying out high-energy grinding and leaching on the oxide, and filtering to obtain a lithium-containing solution and crude aluminum oxide; and carrying out post-treatment on the lithium-containing solution to obtain the battery-grade lithium carbonate. According to the method, the technological process of the clay type lithium ore is optimized, synchronous leaching of valuable elements lithium and aluminum and efficient separation of the lithium element and the aluminum element are achieved, the problem that the cost is high when lithium is independently extracted is solved, cooperative utilization of clay type lithium ore resources is achieved, and the cost is reduced.

The invention discloses a nano porous nickel electrocatalyst material as well as a preparation method and application thereof. Belongs to the technical field of electrolyzed water hydrogen production catalysts. According to the method, a nickel net substrate is subjected to pretreatment, electrogalvanizing, high-temperature alloying and chemical dealloying, and finally the nano-porous nickel electrocatalyst material growing on the nickel net is obtained. The electrocatalyst material prepared by the method has a uniform three-dimensional nano porous structure, the thickness of a porous layer is 10-70 [mu] m, and the aperture is 100-500 nm. As an alkaline electrolytic water hydrogen evolution reaction cathode catalyst, the material has high specific surface area and rich active sites, and shows lower overpotential and excellent long-term stability. The method is simple in technological process, raw materials are easy to obtain, and the method has large-scale production potential and has wide application prospects in the field of hydrogen production through water electrolysis.

The utility model discloses a tire, a traveling wheel and a mowing robot, relates to the technical field of mowing robots, and aims to solve the problems of weak road holding force and unstable operation of the traveling wheel of the mowing robot in the related technology. The tire comprises a tire body and at least two bulge groups, wherein the tire body is provided with a tread; the plurality of bulge groups are arranged on the tread along the axis direction of the tire body, and each bulge group comprises a plurality of bulges arranged along the circumferential direction of the tire body; the tread comprises a first ring surface, a transition ring surface and a second ring surface which are sequentially connected in the axis direction of the tire body, and the side, close to the transition ring surface, of the first ring surface is higher than the other side, away from the transition ring surface, of the first ring surface; the side, close to the transition ring face, of the second ring face is higher than the other side, away from the transition ring face, of the second ring face.

The utility model provides a device of adding anti -caking agent before static atomization coupling type fluidized bed in potassium chloride production, including vibration feeder and static atomizer, and vibration feeder includes feeder body, is provided with vibration motor on feeder body, and feeder body is connected with support frame through composite damping system, still be provided with opening on feeder body, and static atomizer includes the multi -hole nozzle corresponding to the opening setting. According to the device of adding anti -caking agent before static atomization coupling type fluidized bed in potassium chloride production of the utility model, not only can the anti -caking agent be evenly sprayed on the salt particle surface, but also can ensure that the salt particle is fully loose in the conveying process, and further improve the uniform distribution effect of anti -caking agent addition.

This disclosure provides a seawater uranium extraction composite adsorbent material, its preparation method, and its application. The preparation method of the seawater uranium extraction composite adsorbent material includes: coating a pretreated polymer film with a coating liquid to obtain a modified polymer film; and post-treating the modified polymer film to obtain the seawater uranium extraction composite adsorbent material. The coating liquid includes a metallo-oxime-based material, a hydrophilic polymer material, a plasticizer, a crosslinking agent, and a pore-forming agent.

This invention discloses a closed-loop recycling process for potassium extraction and silver leaching from sintering mill head ash, belonging to the field of metallurgical solid waste resource utilization technology. The process includes a water leaching separation step to dissolve potassium and sodium salts from the sintering mill head ash, followed by solid-liquid separation to obtain a leachate and silver-rich ash slag; a triple-effect evaporation or MVR potassium extraction step to evaporate and crystallize the leachate, separating KCl and NaCl products and preparing a high-chloride brine of a certain concentration; and a high-chloride brine silver leaching step utilizing high-Cl... ‑ Saltwater was used directly as the silver leaching medium. Hydrochloric acid and an oxidizing agent were added to leach silver into the ash residue. The silver was then treated with [AgCl2]. ‑ Dissolution in complex ion form; control of Cl ‑ The silver precipitation step involves cooling and dilution to precipitate AgCl; the precipitated solution is then returned to the washing system, forming a closed loop. This invention utilizes the concentrated brine produced during the potassium extraction process to directly meet the high Cl content requirements of the silver leaching process. ‑ To meet environmental requirements, the recycling of NaCl solution has been achieved, with a single-pass silver leaching rate of ≥90%, a cumulative recovery rate of ≥95%, a NaCl recycling rate of ≥90%, zero wastewater discharge, and an overall operating cost reduction of 15-20%.

The utility model belongs to the technical field of dies, and discloses a die structure for small-range double-sided thickening of the edge of a thick-material product, which is a progressive die and comprises an upper die and a lower die, and further comprises a blank body thickening assembly, a profiling thickening assembly and a profiling precise cutting assembly which are sequentially arranged, a product material belt is extruded by the blank body thickening assembly to form a bottom-thickened blank body, and the bottom-thickened blank body is extruded by the profiling precise cutting assembly. The bottom-thickened blank body is extruded by the profiling thickening assembly to form a double-face-thickened body, and the double-face-thickened body is accurately cut by the profiling accurate cutting assembly to form a product with double faces thickened in a small edge range. The die structure solves the problems of complex process, low production efficiency and high and serious production cost caused by double-sided thickening of a product, optimizes the product process flow, improves the production efficiency, reduces the production cost, and has direct economic benefits.

This utility model discloses an integrated welding and marking device for automotive door sill beam welding assemblies, including a fixture base, a laser marking device, a servo welding gun, multiple L-shaped clamps, and a control box. The laser marking device and servo welding gun are fixed to the fixture base, and the L-shaped clamps are bolted to the top of the base, holding the door sill beam welding assembly. The servo welding gun is fixed to the upper part of the base via a bracket, performing welding above the part; the laser marking device is mounted on the bottom of the base via a fixed frame, performing back marking below the part. The control box is bolted to the side of the base, and cables connect the marking device and the welding gun via wiring channels. This device, through its integrated structure, simplifies the process flow, reduces part transfer, lowers the rate of missing, damaged, and misplaced QR codes, saves logistics time and equipment space, improves production efficiency and traceability reliability, and is suitable for the automated production of various door sill beam welding assemblies.

This invention discloses a low-energy-consumption mixed C4 alkane-olefin separation device, comprising: a C4 evaporator or tank, an extractive distillation column for separating alkane and olefin, and a stripping column. The inlet of the extractive distillation column is connected to the top outlet of the C4 evaporator or tank, the stripping column is connected to the bottom of the extractive distillation column, and the top of the stripping column is connected to the inlet of a C4 olefin reflux tank. A chilled water system is also connected between the top of the stripping column and the inlet of the C4 olefin reflux tank to cool the C4 olefins before reflux. By installing a chilled water system at the top of the stripping column, this invention allows for lower-pressure operation within the stripping column, reducing overall energy consumption, optimizing the process flow, and simplifying the number of equipment. Furthermore, the separation effect of olefins cooled to low temperatures by chilled water under low pressure is better, improving the recovery rate and purity of C4 alkane and C4 olefin.

The application provides a printed circuit board and a preparation method thereof, and the complete printed circuit board structure is formed by adopting glass as a PCB medium layer material and combining the step-by-step construction of a multi-layer build-up structure and a pressing process, high-density interconnection of a complex circuit is realized, and problems such as signal attenuation and poor reliability caused by insufficient dielectric properties, thermal stability or mechanical strength of a traditional PCB medium layer material in a high-frequency high-speed transmission scene are solved.

The invention relates to the technical field of medicines, and particularly discloses a glucosamine sulfate capsule and application thereof in preventing joint degeneration after sport injury. The content of the capsule is prepared from the following raw materials: glucosamine sulfate and sodium chloride double salt, corn starch, lactose, talcum powder, magnesium stearate and a chondroitin sulfate-chitosan nano-composite, by introducing the chondroitin sulfate-chitosan nano-composite, the common problems of easy moisture absorption and poor stability of the traditional glucosamine sulfate preparation are solved, the chondroitin sulfate-chitosan nano-composite has good interaction with the active ingredients of the main medicine, and a microscopic protection structure is formed on the particle surface, so that the physical and chemical stability of the final product is enhanced; the influence of environment humidity can be effectively resisted in the production, storage and subsequent use processes, good fluidity and uniformity of contents are maintained, and long-term stability of product quality is ensured.

This utility model relates to a white pulp production system for A3 grade kraft paper, comprising: a chain conveyor for conveying white pulp residue recovered from a wastewater treatment plant to a pulper; a pulper for pulping the white pulp residue conveyed by the chain conveyor and then sending it to a high-consistency desander; a high-consistency desander for removing desander from the pulper and then sending it to a discharge pulp tower; a discharge pulp tower for storing the pulp after desandering by the high-consistency desander; a discharge pump for sending the pulp in the discharge pulp tower to a low-consistency desander; a low-consistency desander for removing desander from the pulp conveyed by the discharge pump and then sending it to a thermal dispersion system; a thermal dispersion system for thermally dispersing the pulp and then sending it to a medium-fiber storage tower; and a storage tower for storing the pulp after thermal dispersion treatment. By treating the white pulp residue recovered from the paper mill wastewater treatment plant, it can replace domestic waste white pulp, optimize the process flow, and reduce raw material costs.

The present application relates to ramie degumming process technical field, specifically is a kind of acid-base synergic biological enzyme assisted ramie green degumming method, the method uses NaOH-H2SO4 Synergic treatment system, by acid dipping-alkali dipping two-step method synergistic effect, acid dipping stage is treated with 1%-5% H2SO4 Solution adding surfactant etc., alkali boiling stage is treated with 2%-6% NaOH solution adding sodium silicate etc., combined with biological enzyme auxiliary treatment, realize efficient degumming, the present application acid-base synergic biological enzyme assisted ramie green degumming method, gum removal rate is >90%, reduce 20%-30% alkali dosage, fiber breaking strength is increased by 20%-25%, wettability is significantly improved, residual glue rate is as low as 2% or less, and reduce production cost and wastewater treatment cost, adapt to existing production line, can satisfy high-end textile demand.

The application relates to a continuous hydrochloric acid concentration double-membrane dynamic balance integrated device, relates to the technical field of hydrochloric acid concentration, and comprises a pretreatment unit, a reverse osmosis unit, a nanofiltration refining unit, a dynamic balance control assembly, a pulse type backflush assembly, a wastewater collecting tank, a hydrochloric acid collecting tank and a control cabinet. The application can selectively separate ions in a refining stage through the setting of a sulfonic acid group modified nanofiltration membrane, can output high-purity hydrochloric acid, meanwhile, the sulfonic acid group enhances the uniform hydrophilicity and anti-pollution property of the membrane surface, and through the cooperation of acid-resistant ceramic microfiltration membranes, silicon carbide reinforced polyamide composite membranes and the sulfonic acid group modified nanofiltration membrane, the separation efficiency of the device on impurities in the hydrochloric acid concentration process can be effectively improved, meanwhile, the combination of the dynamic balance control assembly and the pulse type backflush assembly can ensure the stability and anti-pollution capability of the system in long-time operation.

The present application relates to a kind of green synthesis ammonia system and method, the device includes: renewable energy power generation device, water electrolysis device, air separation device, catalytic deoxidation device and ammonia synthesis device;Water electrolysis device is connected with renewable energy power generation device, catalytic deoxidation device is connected with water electrolysis device and air separation device respectively, ammonia synthesis device is connected with catalytic deoxidation device;Ammonia synthesis device includes synthesis gas compressor, ammonia synthesis tower, heat exchange component and separation component;Synthesis gas compressor is connected ammonia synthesis tower and heat exchange component respectively, ammonia synthesis tower is connected heat exchange component, and heat exchange component is connected separation component.The present application can be when renewable energy load changes, by flexible adjustment ammonia synthesis loop, makes ammonia synthesis device stable operation.Provides new technology for green synthesis ammonia, can effectively promote energy saving and emission reduction.

This invention provides a method for recovering Pt and Ir from waste water electrolysis membrane electrodes, comprising the following steps: Step S1. Dissolving and separating platinum and iridium: The waste water electrolysis membrane electrode is soaked in an organic solvent and separated to obtain a catalyst mixture residue. The catalyst mixture residue is added to a first reagent and calcined at high temperature to obtain precious metal residue. The precious metal residue is dissolved in hydrochloric acid and filtered to obtain a mixed residue. Then, the mixed residue is dissolved in a solvent and filtered to obtain chloroplatinic acid and iridium residue. The chloroplatinic acid is then reduced and purified to obtain platinum compound or platinum black. Step S2. Separating iridium: The iridium residue is added to a second reagent to oxidize and dissolve the iridium residue into chloroiridium acid and insoluble residue. The chloroiridium acid is oxidized with an oxidant, and then ammonium chloride is added and stirred to precipitate it to obtain ammonium chloroiridate. After purification, iridium compound or iridium black is prepared, and the insoluble residue is dissolved in aqua regia for reuse. This invention adds hydroxide to the precious metal residue during calcination, minimizing mechanical entrainment loss and preventing melt splashing during oxidative calcination.

This invention discloses an engineered Bacillus subtilis strain producing tagatose, its construction method, and its applications, belonging to the field of bioengineering technology. This engineered strain uses Bacillus subtilis as a host and co-expresses an L-arabinose isomerase from *Erysipelothrix larvae* and a β-galactosidase from *Escherichia coli*. The two genes are tandemly linked via ribosome binding sites or promoters to construct a Bacillus subtilis strain with dual-enzyme co-expression. This dual-enzyme Bacillus subtilis strain catalyzes the production of D-tagatose from lactose throughout the entire cell. After optimization of the enzymatic reaction, the yield and conversion efficiency of D-tagatose are significantly improved. This invention employs single-strain dual-enzyme co-expression and one-step whole-cell catalysis, using low-cost lactose as a substrate. The reaction is mild, with few byproducts, simplified process, and no endotoxin safety hazards. It solves the problems of low conversion rate, high substrate cost, and cumbersome strain formulation in existing technologies, making it suitable for the industrial production of food-grade D-tagatose.

This invention relates to a refining method for LF (Leaf-Fuel) steel scrap. The refining method includes the following steps: tapping steel from the converter; after molten steel enters the LF furnace, power is supplied, and slag is added; after adding the slag, steel scrap containing precious metals is added according to the molten steel temperature t1. When 1520℃≤t1<1530℃, the rate of adding steel scrap is 270-310 kg / min; when 1530℃≤t1<1540℃, the rate of adding steel scrap is ≤410 kg / min; when 1540℃≤t1<1550℃, the rate of adding steel scrap is ≤510 kg / min; and when t1≥1550℃, the rate of adding steel scrap is ≤610 kg / min. This refining method can effectively recover precious alloying elements from steel scrap, achieving resource reuse. Furthermore, the process is safe, ensuring personal safety and protecting the integrity of production facilities and equipment, and is highly practical.

The utility model provides a kind of drop pill quick condensation forming device, it is related to drop pill forming technical field, including L-shaped channel, the high place of L-shaped channel is open structure above;The top low place of L-shaped channel is fixedly connected with receiving cylinder, receiving cylinder top is higher than L-shaped channel;The inside of the opening of L-shaped channel is inserted with receiver;Four groups of shaft rollers are rotationally arranged in the inside of L-shaped channel, and four groups of shaft rollers are provided with rubber conveyor belt for conveying pill body outside;The middle of the outside of rubber conveyor belt is recessed structure, and recessed structure is integrally distributed with inclined tooth blade at equal intervals;In the utility model, through the accurate rotation ration of distribution disc, liquid material ration is realized, drop pill forming specification is guaranteed uniform, production precision and product quality stability are improved, through floating ring, the liquid amount in heating bin can be limited, automatically adapt to supplement, ensure that each time the amount of distribution is consistent, realize mass production, solve the problem that existing forming device is inconvenient for mass production.

This utility model discloses a high-efficiency crushing device for organic fertilizer raw materials, including a conveyor frame, a feeding conveyor belt driven to move on the conveyor frame, a support frame on the conveyor frame, a first electric push rod on the support frame, a hammer plate at the bottom end of the first electric push rod, a second electric push rod on the support frame behind the first electric push rod, a pressing frame at the bottom end of the second electric push rod, a crushing roller mounted on the pressing frame via bearings, a crushing box at the output end of the feeding conveyor belt, two sets of crushing rollers mounted inside the crushing box via bearings, and a crushing motor mounted in conjunction with the crushing rollers, a conveyor box at the bottom end of the crushing box, and a spiral crushing and conveying structure inside the conveyor box. This utility model can realize continuous and integrated operation of organic fertilizer raw materials in the crushing process, reduce intermediate manual intervention, and at the same time, can realize automatic screening and cyclic crushing of unqualified crushed materials, thereby improving the crushing effect.

The invention discloses a system and a method for coupling purification and conversion heat of coal pyrolysis raw gas. The coal pyrolysis raw gas purification and conversion heat coupling system comprises an inlet and outlet heat exchanger, a detoxification tank, a deoxidation furnace, a dechlorination furnace, a washing humidifying tower, a gas preheater, a dechlorination tank and a first heat insulation furnace, an inlet of the detoxification tank is communicated with an outlet of the heat absorption side of the inlet and outlet heat exchanger, and the detoxification tank, the deoxidation furnace, the dechlorination furnace and the washing humidifying tower are sequentially communicated; an inlet of the heat absorption side of the gas preheater is communicated with the washing humidifying tower, an inlet of the dechlorination tank is communicated with an outlet of the heat absorption side of the gas preheater, an outlet of the dechlorination tank is communicated with an inlet of the first adiabatic furnace, and an outlet of the first adiabatic furnace is sequentially communicated with the heat release side of the gas preheater and the heat release side of the inlet and outlet heat exchanger. Multi-stage coupling of high-level heat and low-level heat and accurate and effective removal of impurities are completed through heat grading matching, excessive use of steam and electric energy is avoided, and process heat coupling and flow optimization are achieved.

This invention discloses a high-performance corrosion-resistant non-magnetic drill collar and its manufacturing method, belonging to the field of stainless steel material technology. It solves the problems of poor microstructure uniformity and the inability to simultaneously and effectively improve mechanical properties and stress corrosion resistance in existing non-magnetic drill collars. The manufacturing method includes: melting steel; preparing ingots; forging the ingots into steel billets using a high-speed forging mill after they are removed from the furnace; heating and holding the steel billets; forging the steel billets into intermediate billets using a radial forging mill; water-cooling the intermediate billets; performing secondary forging of the water-cooled intermediate billets using a radial forging mill, followed by air cooling to obtain finished steel billets; straightening, drilling, reaming, boring, internal controlled rolling, and shot peening of the finished steel billets to obtain the high-performance corrosion-resistant non-magnetic drill collar. The high-performance corrosion-resistant non-magnetic drill collar of this invention has fine and uniform grains and excellent mechanical and corrosion resistance.

The application relates to a manufacturing device and method of composite warm lightweight fabric, and relates to the technical field of composite fabric preparation.The structure of the warm lightweight fabric comprises two single fabrics and a warm fiber film compounded between the two single fabrics.The structure of the manufacturing device comprises a mounting frame, single fabric feeding counter-rollers, bearing counter-rollers, a hot-pressing composite machine group and composite fabric winding counter-rollers arranged on the mounting frame in sequence, and further comprises a perforating machine group and a hot-melt adhesive discharging machine group.The perforating machine group is provided with two perforating units arranged oppositely, and an electrically-driven coating roller is arranged between the two perforating units.The driving end of the electrically-driven coating roller is provided with a transmission mechanism for performing intermittent perforating treatment of the two perforating units.The manufacturing device can further optimize the process flow, improve the work efficiency, improve the combination effect of the single fabric and the warm fiber film, and improve the strength of the composite fabric.