62 results about "Single step" patented technology

The invention discloses a preparation method and equipment of three-chamber eccentric parallel structure nanofibers. The preparation method comprises the following steps: simultaneously carrying out high-voltage electrostatic spinning on three spinning solutions; the two spinning solutions are respectively divided into microfluids to be led out through an array formed by two sets of series metal capillary tubes; the other spinning solution is divided into microfluids to be led out through a plurality of bottom through holes of the insulating container; the first series of metal capillary tubes are inserted into the second series of metal capillary tubes to form a series of metal capillary eccentric sleeves; the series of metal capillary eccentric sleeves penetrate through the insulating container and extend out of one side of the interior of the bottom through hole to form a combined eccentric outlet of three strands of spinning solutions; three spinning solutions are guided into a high-voltage electrostatic field in an eccentric parallel mode through the combined eccentric outlet, and the three-chamber eccentric parallel structure nanofiber is formed through single-step direct stretching. According to the method, the capability of preparing the three-chamber eccentric parallel structure characteristic nanofiber with a complete structure in a single-step, batch and large-scale manner is endowed.

The application discloses a variable-volume synthetic column and a synthetic system using the same. The synthetic column comprises a hollow column body, a fixed seat, an upper end cover and a hollow connecting column are arranged on the upper part of the column body, the bottom end of the hollow connecting column extends into the inside of the column body and is connected with a piston, and a lower plug is arranged on the lower end of the column body; wherein the piston is penetrated by a vertical first through hole, the lower plug is penetrated by a vertical second through hole, a hydraulic cavity is formed between the upper end cover and the piston, and a bottom outlet is arranged on the lower end of the lower plug. The variable-volume synthetic column can make the total amount of monomers and activators in a single step cycle not less than the sum of the pipeline and the residual volume of the column, can make the single step cycle be realized through one-step coupling, thereby reducing the synthesis time, improving the synthesis efficiency, and ensuring the stability of the quality of the synthetic product.

Surgical constructs, assemblies, kits and methods of tissue fixation are disclosed. Soft tissue augmentation is conducted with a simple device that allows a surgeon to augment poor tissue in a most expedient and straightforward manner. The device includes an implant in the form of a molded part which has one or more barbs that are angled generally in a retrograde fashion. The implant is affixed to the graft desired to be augmented onto patient's tissue. The surgeon needs only “hook” the distal portion of the graft / implant device into patient's tissue and pull to fix the graft in contact.

The invention provides a preparation method of a supercritical blank mold foaming product, and belongs to the technical field of high polymer material processing. By using the special mold, the raw materials can be subjected to one-time foaming molding; foaming and rapid cooling are carried out in the mold, the shrinkage rate is controlled through directional cooling of the cold runner, and the accuracy of the size of a product, the high yield of the product and high-rate foaming of the product are ensured. Meanwhile, the technical scheme provided by the invention can solve the problems that in the prior art, the process period is long, the production efficiency is low, the equipment investment cost is high, the product size stability is poor, the melt internal stress is difficult to release, and the product yield is influenced.

A rolling bearing cage has at least a first end face with at least one elevation. The at least one elevation differs from an individual step which has a right angle in one section. In other words, the elevation has a shape different than a single step with a right angle.

This application relates to the field of liquid manipulation, disclosing a microfluidic chip and a liquid manipulation method, including a first electrode plate and a second electrode plate, with a liquid flow channel formed between the first and second electrode plates. The liquid flow channel includes a storage region, a distribution region, and a connecting region, with the connecting region located between the storage region and the distribution region. The height of the storage region is greater than the height of the distribution region. The first electrode plate includes an electrode layer, and the second electrode plate includes a driving electrode layer. The driving electrode layer includes a first electrode, a second electrode, and a third electrode, corresponding sequentially to the storage region, the connecting region, and the distribution region. The third electrode includes sub-electrodes arranged in an array, with at least two rows and two columns of sub-electrodes. The two-stage structural design effectively reduces costs; the mother liquor can be separated into sub-droplets in a single step, eliminating the need for intermediate droplet transitions, resulting in good stability and short distribution manipulation time. The third electrode includes multiple sub-electrodes, making it easier for the mother liquor to enter the distribution region and break apart to form sub-droplets, and allowing for flexible control of the sub-droplet volume.

This invention discloses a ternary precursor with vertically stacked particles in a single step, its preparation method, and its application, belonging to the field of battery material technology. The preparation of the ternary precursor includes: Step 1: Adding a first mixed metal salt solution, a precipitant, and a complexing agent to a base solution, reacting for 0.5h~20h to obtain crystal nuclei; Step 2: Increasing the rotation speed and ammonia concentration, while maintaining other conditions as in Step 1, continuing the reaction for 4h~12h to obtain crystals; Step 3: Replacing the first mixed metal salt solution with a second mixed metal salt solution, while maintaining other conditions as in Step 2, continuing the reaction until particles of a predetermined target particle size are obtained. This method is simple, easy to operate, and can obtain precursor materials with vertically stacked particles in a single step. This precursor helps shorten the lithium-ion transport path, improves the rate performance of the battery, and has good pressure resistance, which can reduce microcracks caused by mechanical forces and improve the battery's lifespan.

The utility model relates to the field of water control equipment, and discloses a multi-module water control device convenient to overhaul, which comprises a shell and a mounting seat, the mounting seat is arranged on the rear side of the shell, a connecting pipe is arranged at the lower part of the shell, and a limiting component is arranged on the rear side of the shell; the limiting assembly comprises an insertion plate, the insertion plate is fixedly installed on the rear side of the shell through screws, an insertion groove is formed in the inner wall of the front side of the installation base and matched with the insertion plate in an inserted mode, and an operation rod is slidably connected to the inner wall of the insertion plate. According to the utility model, the spring is elastically connected with the limiting piece, when the inserting plate is inserted into the inserting groove, the limiting piece is automatically clamped into the limiting groove under the action of the spring force, manual fixation is not needed, rapid installation and automatic locking are realized, and when the operating rod is pushed, the inclined surface of the operating rod is matched with the inclined surface of the sliding groove, and the limiting piece is driven to compress the spring and is separated from the limiting groove; unlocking is completed through one-step operation, and the maintenance efficiency is improved.

According to the normal-temperature and normal-pressure dyeable polyester fiber and chinlon composite yarn one-bath-process dyeing method, normal-temperature and normal-pressure dyeable polyester fibers are adopted to replace conventional polyester, synchronous one-bath-process dyeing of polyester and chinlon composite yarn under the normal-pressure condition is achieved, and the technical problem caused by the difference of the dyeing characteristics of two kinds of fibers in a traditional technology is solved. A traditional multi-step two-bath method is integrated into one step, so that the technological process is shortened by more than 50%, and the production efficiency is greatly improved. High-temperature and high-pressure equipment is not needed, and the replacement frequency of the dye liquor is reduced, so that the steam energy consumption is reduced by about 40%, the water consumption and the wastewater discharge amount are reduced by about 35%, and the green manufacturing requirement is met. The mild dyeing conditions of the process effectively protect the mechanical properties of the polyamide fibers, so that the strength retention rate of the polyamide fibers is increased by 15% or above, and excellent leveling property and color fastness are ensured. The operability and reproducibility of the process are also enhanced by the single-bath process, and a reliable guarantee is provided for large-scale stable production.

The present application relates to pressure pipeline air tightness detection technical field, and disclose a kind of cold storage refrigeration pipeline prefabrication welding and air tightness test method;For solving the problem that stable, repeatable, traceable qualification and threshold quantization of small leakage cannot be achieved in traditional method;The method, first determine boundary data unit and valve position isolation check, access dry nitrogen, reference cavity, double pressure link and near and far end temperature measuring point, initial parameter record;Pipe link and valve position switching self-check are completed under the working condition of reference cavity;Precharge and target pressure are staged inflation, and pressure temperature threshold value is gated to stabilize voltage;Main pressure maintaining period synchronously obtains the pressure temperature data of section to be detected and reference cavity, and periodically rechecks cross verification drift, triggers condition according to partition single valve single step isolation recheck, obtains small leakage stable repeatable traceable determination conclusion.

The invention discloses a high-frequency airtight microstrip waveguide power conversion device, which is characterized in that a whole multi-layer ceramic is connected with a metal carrier with a cavity, the integrated structure can realize airtightness at one time, and compared with a sapphire waveguide sealing window structure in the prior art, the high-frequency airtight microstrip waveguide power conversion device is more convenient in structure and simpler in process flow. On the basis of a copper-based LTCC material, the dielectric loss is relatively small, and the dielectric loss is reduced by adopting a multilayer dielectric double-sided slotting mode, so that relatively low insertion loss is realized, local airtightness of an active device is realized, the size of the whole device is reduced, the device is more suitable for being used in a millimeter wave circuit, and the reliability of the device is improved.

A method of copper electroplating in the manufacture of printed circuit boards. The method is used for filling through-holes and micro-vias with copper. The method includes the steps of: (1) preparing an electronic substrate to receive copper electroplating thereon; (2) forming at least one of one or more through-holes and / or one or more micro-vias in the electronic substrate; and (3) electroplating copper in the at least one or more through-holes and / or one or more blind micro-vias by contacting the electronic substrate with an acid copper electrolyte. The acid copper electrolyte is used to plate the one or more through-holes and / or the one or more blind micro-vias. A first pulse reverse plating waveform sequence is used to create a copper bridge in the center of the through-holes followed by direct plating until metallization is complete.

The present application relates to a kind of open pit anticline area inclined base dump method, comprising the following steps: dividing the end zone of stope into accelerated propulsion area, when accelerated propulsion area is forwardly propelled distance D, rough surface blasting is carried out to the exposed inclined base;End slope and inclined base meet at the intersection to start with the strike angle θ End slope pseudo-inclined dump, until with inclined base is connected, forms dump step;Stope propulsion distance is D', completes a single step dump disposal;The above steps 1~3 are recycled, after forming a single step dump step, continue to advance along the direction of inclination of inclined base and pseudo-inclined dump direction.This application does not occupy other land, forms dump in anticline area, which is convenient for discharge of stripping material, saves disposal cost, through end slope pseudo-inclined dump method, uses the support of end slope and inclined base to dump, which can improve the stability of inclined base dump, prevent coal seam slope surface from sliding.

This disclosure relates to a separator. The separator includes an electrode adhesive portion having a high binder content and formed on the surface of the separator to provide increased adhesion to the electrodes and improved processability during battery manufacturing. Therefore, the separator and electrodes are in close contact with each other to prevent gap formation, thereby providing an effect of improved resistive characteristics. In addition, the separator includes an inorganic coating disposed on the surface of a porous substrate, wherein the inorganic coating has a porous structure derived from the interstitial volume between inorganic particles, and thus the separator has appropriate porosity and sufficient electrolyte retention. Furthermore, because the separator includes an inorganic coating on the surface of the porous substrate, the separator ensures heat resistance and prevents shrinkage even when the internal temperature of the battery rises. This disclosure also relates to a method of manufacturing a separator. The method includes forming an inorganic coating and an electrode adhesive portion disposed on the inorganic coating in a single step by using the density of the inorganic particles and the density of the binder resin particles, and therefore has advantages in terms of ease of processing.

This invention relates to a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy and its preparation method, belonging to the technical field of hydrogen storage alloy materials. It solves at least one of the problems of high activation conditions, long activation cycles, and poor hydrogen absorption / desorption performance in existing TiFe hydrogen storage alloys. This invention provides a Ti-Fe-Ce-Mn-Zr-Al-Co based hydrogen storage alloy, characterized in that: the alloy's specific composition is Ti... 1.05 Ce 0.05 Fe 1.15‑x‑y‑z‑m Mn x Zr y Al z Co m Where x, y, z, and m are atomic ratios, and 0.1≤x≤0.25, 0.05≤y≤0.2, 0.02≤z≤0.1, 0.02≤m≤0.1. The hydrogen storage alloy exhibits excellent activation and hydrogen absorption / desorption properties, with a hydrogen storage capacity ≥1.70 wt.%, a hydrogen absorption plateau pressure ≥0.41 MPa, and a hydrogen desorption plateau pressure ≥0.31 MPa. It can be activated in a single step at 30°C and an initial hydrogen pressure of 3 MPa, making it suitable for widespread application as a solid-state hydrogen storage material in hydrogen fuel cells and other scenarios.

The invention belongs to the technical field of in-situ leaching uranium mining, and particularly relates to a well washing sleeve sealing device. According to the device, through the single step of rotating the push rod, the radial expansion sealing of the rubber sleeve and the switching of the valve element flow channel can be synchronously completed, the sealing function and the flow channel control function are integrated into the single device, the operation process is simplified, and the operation efficiency is improved. The rubber sleeve generates radial expansion under axial extrusion and can be tightly attached to the irregular well wall, elastic sealing is formed, and adaptability is high. The bearing assembly ensures smooth rotation of the push rod, friction is reduced, and sealing failure caused by torsion stress is avoided. The valve element adopts the double-channel design of a lateral hole and a bottom hole, accurate alignment or closing is achieved through driving of the push rod, it is ensured that well washing media are rapidly converted into lateral circulation after sealing is established, well bottom blockage is avoided, and the well washing effect is improved.

The embodiment of the invention provides a running time statistical method and device, equipment, a storage medium and a program product, and relates to the field of semiconductor manufacturing, precision machining or automation. The method comprises the following steps: acquiring preset step durations corresponding to steps of a target process, and accumulating all the preset step durations to obtain a preset total duration; when it is detected that the pause event occurs in the step, pause starting time and pause recovery time corresponding to the pause event are obtained; obtaining a pause interval according to the pause starting time and the pause recovery time, and accumulating the pause interval to an accumulative pause calculation unit to obtain an accumulative pause duration; and according to the preset step duration, the starting time and the pause interval corresponding to the steps, obtaining the step operation duration of the steps. According to the method, the timing precision is improved, and the time obtained through statistics is consistent with the actual situation. And the single-step operated time, the remaining time and the total remaining time of the formula can be output at the same time, so that the process controllability can be improved.

To provide a prefabricated scaffolding that can be easily installed while ensuring safety. [Solution] The prefabricated scaffolding 1 according to this embodiment comprises a fixing member 3 that is fixed to electrical equipment, and a plurality of portable scaffolding members 4, each having a single step 43 and varying heights. The plurality of scaffolding members 4 are arranged so that the relatively taller scaffolding members 4 are connected to the fixing member 3, and the relatively lower scaffolding members 4 are sequentially connected to the relatively taller scaffolding members 4, thereby forming a staircase-like scaffolding.

This invention discloses a method for fabricating a thin-film bulk acoustic wave device, comprising etching a first cavity on a silicon substrate, depositing a sacrificial layer within the first cavity, depositing a first electrode on the sacrificial layer and a portion of the substrate, and sequentially depositing a piezoelectric thin film, a second electrode, and a protective layer on the first electrode and another portion of the substrate in a single step, etching until the piezoelectric thin film is exposed, simultaneously etching to obtain a Q-value enhancement structure and an exposed second electrode, etching deposition vias and release holes on the piezoelectric thin film, depositing a first metal pad layer through the deposition vias to connect the first metal pad layer to the first electrode, depositing a second metal pad layer on the exposed second electrode, and etching the sacrificial layer through the release holes to obtain a second cavity, thereby obtaining the thin-film bulk acoustic wave device; the Q-value enhancement layer is etched from the protective layer by physical etching, such that the etching profile of the Q-value enhancement layer is controlled at 80-90°. This invention also discloses a thin-film bulk acoustic wave device fabricated using this method.

The application discloses a single-step hydraulic plug type lifting device, and belongs to the field of hydraulic devices.The single-step hydraulic plug type lifting device comprises a lifting device, and the lifting device comprises a guide column, a plurality of uniformly distributed insertion holes are formed in the guide column, a fixing base and a floating ring are arranged on the guide column, the lower end of the fixing base is fixedly connected with a supporting ring matched with the guide column, a plurality of hydraulic cylinders are connected between the floating ring and the fixing base, the floating ring is fixedly connected with a mounting ring, two pairs of hydraulic plugs matched with the guide column are mounted on the mounting ring, and two pairs of anchoring plugs matched with the guide column are mounted on the fixing base.The scheme can realize the synchronous insertion of the plugs into the insertion holes in the lifting process, and can assist in fixing and emergently locking the lifting platform in an emergency, so that the load is uniformly distributed on the plugs and the safety of the lifting platform in use is ensured.

This utility model discloses a quick-release tool for semiconductor device chamber sealing rings, specifically relating to the technical field of sealing ring removal and installation tools. It includes a retractable handle, movable sliding columns, and manual adjustment plates. The retractable handle has an adjustment groove at its front end. The movable sliding columns are respectively embedded at both ends of the inner wall of the sliding cavity, and the manual adjustment plates are respectively disposed within the inner cavity of the sliding block. The movable sliding columns drive the shovel and prying claws to slide and retract into the handle's inner cavity, significantly reducing the overall size of the tool. This makes it easy to carry or store in small spaces such as tool bags. When retracted, the tool is encased in the handle, preventing scratches to the user or damage to other items when exposed. It also reduces friction between the tool surface and the external environment, extending its service life. The tool's length can be adjusted by inserting limiting pins into different limiting holes. Once slid into position, releasing the pin locks the tool, preventing loosening due to force during use. The length can be quickly switched in a single step, enabling rapid installation and removal of the sealing ring.

The invention relates to the technical field of metal forming machining, and discloses a one-time forming machining method for a pipe pile end plate welding groove, a system is installed on a punching machine, and a blanking unit, a blank pressing unit independently driven by a servo and a planetary rolling unit independently driven as well are integrated in an upper die base. The method comprises the following steps: in a working cycle of a punching machine, firstly, applying a flexible pre-pressing force to a plate by a servo edge pressing unit; then, a planetary rolling unit is started, a plurality of forming rollers generate friction heat through the composite motion of high-speed rotation and revolution, metal in the to-be-machined area of the plate reaches the thermoplastic state, and a welding groove is formed through rolling; and then, the servo edge pressing unit increases the pressure to rigid locking force, and finally, the blanking unit completes blanking separation of the end plate. According to the invention, the thermal forming process and the cold blanking process are efficiently integrated into one step in one die, so that the secondary processing is omitted, the production efficiency and the product quality are obviously improved, the technological process is closed-loop and controllable, and the flexibility is high.

The invention relates to a method for fractionating soluble fractions of peas, including, in sequence, a step of microfiltering or centrifuging, followed by a step of ultrafiltering, and optionally a reverse-osmosis step. A reduction of the leakage of proteins toward the soluble fractions, an improvement of the yield of the single concentration step by evaporating the soluble fractions, and the selective isolation of proteins of interest are thus achieved. The method is easy to implement, the devices used at each single step are conventional and well known to the person skilled in the art. Also, the method of the invention does not use any organic solvent other than water.

The application discloses a kind of self-adapting variable impedance algorithms for hydraulic four-foot support unloading, specific steps include the following: step 1, single cycle variable impedance control, in single step cycle, introduce variable impedance control strategy, when detecting that force sensor detects that force variation rate is larger, judge that robot is impacted by larger, at this moment, the expected force is adjusted quickly to realize unloading, to reduce the impact damage to structural member;Step 2, dynamic impedance coefficient adjustment, when detecting that impact force variation rate exceeds preset threshold or speed increases, dynamically reduce impedance coefficient to reduce rigidity, improve compliance, help to realize quick unloading;Step 3, impact detection and real-time response.The application can dynamically adapt to complex trajectory and stress change, realize compliance control and stable operation throughout, not only improve unloading efficiency and structural reliability, but also take into account compliance and movement ability, provide reliable support for efficient walking of hydraulic four-foot robot in complex environment.

The invention relates to a rolling bearing cage having at least a first end face (10). It is proposed that the first end face has at least one projection (12) which differs from a single step having a right angle in a cross-section.

The invention belongs to the technical field of column wrapping, and provides an arc column wrapping aluminum veneer convenient to disassemble, the arc column wrapping aluminum veneer comprises an arc-shaped aluminum veneer body, a plurality of sets of mounting grooves are formed in the side face of the aluminum veneer body, clamping grooves are formed in the positions, corresponding to the mounting grooves, of the aluminum veneer body, and moving frames are arranged in the mounting grooves; the moving frame extends out of the mounting groove, a limiting plate is slidably mounted at the end of the moving frame, an elastic part is fixedly mounted on the moving frame, and the end, away from the moving frame, of the elastic part is fixedly connected with the limiting plate. Compared with the prior art, the aluminum veneer fixing device has the following beneficial effects that the two sets of aluminum veneer bodies are fixed through the limiting plates and the fixing plates, during follow-up disassembly, the limiting plates are pushed upwards through the lower base plate to move, fixing can be relieved when the lower ends of the limiting plates exceed the height of the fixing plates, and fixing can be relieved only through one step; and the disassembly efficiency of the aluminum veneer body is greatly improved.

The present disclosure provides a chromium-nickel co-diffusion coating, a preparation method therefor and a use thereof. The preparation method comprises: performing surface pretreatment on a metal workpiece; performing shot peening treatment on the pretreated metal workpiece; and applying chromium-nickel co-diffusion slurry in a single step to the surface of the shot-peened metal workpiece, and performing drying, curing, and sintering treatment to obtain a chromium-nickel co-diffusion coating on the surface of the metal workpiece, wherein the chromium-nickel co-diffusion slurry comprises solid-phase components and liquid-phase components; the solid-phase components include chromium powder, nickel powder, aluminum oxide, and chromium oxide; and the liquid-phase components include Al(H2PO4)3, sodium silicate, ammonium iodide, chromium oxide, and magnesium oxide. The coating is suitable for various metal workpieces requiring surface strengthening, including those made of carbon steel, austenitic stainless steel, high-temperature alloys, etc. The coating features a wide range of applications and extremely high practicability. Moreover, the coating has strong adhesion and can improve the high- and low-temperature corrosion resistance and steam oxidation resistance of metal workpieces.

A stair tread covering designed to be mounted on a single step of a staircase composed of multiple steps separated by risers. It has a plate configuration comprising a main flat panel (1) intended to cover a step. This panel (1) is extended along its longer sides (1), oriented perpendicular to the line of travel, by two lateral panels (2, 3) perpendicular to the main panel (1): an upper panel (2) and a lower panel (3). See Fig. 1 in the abstract.

A log pusher comprising a frame, a reception bed attached to the frame and a single step assembly moving up and down with regard to the reception bed. The single step comprises a resilient member for absorbing and / or reducing vibrations associated with logs impacting the log pusher. A method to reduce vibrations associated with logs impacting a log pusher is also provided. The pusher may also be replaced in a log production line using a crane or any other similar equipment.

The present invention relates to a composition for the direct formation, in a single step and at room temperature, of an amorphous MOF based on humic acids, which MOF consists of a phosphate-metal-humic complex. The present invention also relates to the method for obtaining this composition, and to the use thereof for efficient crop fertilisation.