121 results about "Uniform size" patented technology

The invention discloses a processing method for controlling the copper ratio of a superconducting wire, and relates to the technical field of superconducting wire processing, comprising the following steps: acquiring a superconducting wire to be processed; carrying out on-line copper ratio test to obtain a copper ratio change trend and a copper ratio fluctuation range; carrying out coreless lathe scaling according to the copper ratio change trend to obtain a superconducting wire to be processed with fluctuating size; finishing the to-be-processed superconducting wires with fluctuating sizes to a uniform size by using a mold; repeating the online copper ratio test, the coreless lathe peeling and the die finishing until the copper ratio fluctuation range meets the copper ratio fluctuation requirement, and obtaining a superconducting wire in a first fluctuation range; and processing the superconducting wire in the first fluctuation range to a designed copper ratio to obtain a final superconducting wire. On-line copper ratio testing is matched with centreless lathe scaling, so that the copper ratio fluctuation of the superconducting wire is reduced, and the copper ratio uniformity and the performance stability are improved; and non-uniform copper ratio areas at the head and the tail of the wire can be fully utilized, and the yield of the wire is improved.

The invention discloses a plastic extrusion molding machine, belonging to the field of plastic production. A plastic extrusion molding machine includes a spiral agent barrel and a feed port connected to the top of the spiral agent barrel, and also includes a grinding component capable of processing plastic particles to uniform size, the grinding component is connected to the feed port, and the grinding component includes a grinding cylinder and a centrifugal cylinder arranged in the grinding cylinder; a cleaning component elastically connected to the inner wall of the grinding cylinder, the cleaning component is annularly equidistantly arrayed on the outer wall of the centrifugal cylinder, the top of the feed port is symmetrically connected with two groups of feed troughs, a support plate is connected between the two groups of feed troughs, the grinding cylinder is rotatably installed above the support plate through a second rotating shaft, and the plastic particles to be processed are respectively ground twice, fully ensuring that the plastic particles are of the same size and ground evenly, thereby ensuring the same heating time, and being able to be heated evenly in the spiral agent barrel, and ensuring the finished product quality of the plastic product.

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

The utility model provides a micro-fluidic chip for liquid drop fusion. The micro-fluidic chip comprises a liquid drop supply area, a liquid drop pairing fusion area and a river protector. Liquid drops with different sizes are generated or introduced in the respective liquid drop supply areas and then converge into the liquid drop pairing fusion area together, and the liquid drop pairing fusion area mainly comprises a fusion channel with a bulge structure and an electrode. By adjusting the flow in the micro-channel in the liquid drop supply area, the liquid drops of different sizes are paired in the fusion channel according to a set proportion and are fused under the action of the four bumps and the external reinforcing electric field, and then the fused liquid drops which are uniform in size and neatly arranged are generated. According to the utility model, the fusion channel bump design and the electric fusion method are adopted, so that the liquid drop fusion efficiency and stability are improved, and commercialization of the liquid drop fusion chip is facilitated.

The application discloses an incubation method of self-assembled organic material crystals based on double emulsion drops, and the method comprises the following steps: preparing W / O / W type double emulsion drops with uniform size through a microfluidic chip; during the preparation of the double emulsion drops, using a self-assembled organic material solution as an inner water phase solution, using a non-water-soluble solution as an intermediate oil phase solution, and using a water phase solution containing a high salt concentration as an outer water phase solution to encapsulate the self-assembled organic material solution, so as to avoid the self-assembled organic material from being free in the outer water phase solution; and incubating the double emulsion drops loaded with the self-assembled organic material solution. By using the concentration difference between the outer water phase solution and the inner water phase solution, under the influence of osmotic pressure, water molecules in the inner water phase solution migrate to the outer water phase, and the concentration of the self-assembled organic material in the double emulsion drops also increases, so as to promote the growth of the self-assembled organic material crystals, and finally, the self-assembled organic material crystals with uniform size are obtained in the double emulsion drops, and each double emulsion drop contains a single self-assembled organic material crystal.

The present invention relates to diamond abrasive grains and a manufacturing method thereof, and provides tetradecahedral diamond abrasive grains with uniform size and shape. The manufacturing method of diamond abrasive grains according to the present invention allows for shape control and minimizes impurities and crystal defects, thereby manufacturing diamond abrasive grains for ultra-precision grinding in chemical mechanical planarization (CMP) processes.

The utility model relates to the technical field of meat processing, in particular to a multipurpose meat mincing and cutting machine capable of being detached and cleaned, which comprises a support mounted at the top end of a base and a meat mincing barrel rotationally connected with the inside of the support, the top end of the meat mincing barrel is rotationally connected with a top cover, and a meat mincing mechanism for mincing meat in all directions is arranged in the meat mincing barrel. And a meat cutting mechanism for automatically and orderly cutting meat into blocks is arranged in the meat mincing barrel. According to the meat mincing device, the meat mincing mechanism is arranged, the meat mincing mechanism in the meat mincing device has all-directional movement modes of rotation and revolution, the contact area and the contact frequency of food materials and the blades are increased, and therefore the food materials are quickly and evenly minced; according to the meat mincing mechanism, meat can be automatically and rapidly cut into blocks with the uniform size, so that the meat mincing uniformity is improved, the cutter can be rapidly replaced, and after meat mincing is completed, the inner wall of the meat mincing barrel can be flushed, and residues are avoided.

The present invention discloses a device for manufacturing developing microspheres and a method for manufacturing developing microspheres, wherein the device for manufacturing developing microspheres is used to manufacture developing microspheres, aiming to solve the problems of inconsistent microsphere size, low production efficiency and complex operation in the prior art. The device comprises a rotatable inner cylinder and a stationary outer cylinder. A microsphere precursor solution is introduced into the space between the inner cylinder and the outer cylinder as a dispersed phase through a syringe. The space has a continuous phase and forms uniform microspheres under the shear force of the inner cylinder, which are finally collected in a collection tray. By precisely controlling the rotation speed of the motor, the aperture of the injection needle of the syringe and the flow rate of the precursor solution, the present invention can manufacture developing microspheres with uniform size and low polydispersity. In addition, the design of the developing microsphere manufacturing device also takes fluid stability into consideration. By adding a rod in the collection tray and arranging a bearing at the bottom of the inner cylinder, the bearing and the rod cooperate to reduce the swing and turbulence of the inner cylinder, thereby further improving the production quality of the developing microspheres.

The present disclosure provides a molded magnesium carbonate body including between 90-99.9 wt% magnesium carbonate formed into a plurality of uniform shapes having uniform sizes. Between 80-99.9 wt% of the molded magnesium carbonate body may crushed to a fine powder containing a plurality of particles having an average diameter or longest dimension for the plurality of particles between 0.5-100 µm when the molded magnesium carbonate body is subjected to crushing with a force of 100 N for at least 1 second. The present disclosure also provides a molding process for forming such molded magnesium carbonate bodies by suspending magnesium carbonate particles in an alcohol / water mixture having an alcohol:water ratio between 30:70 and 40:60 to form a uniform slurry, filling a mold having desired dimensions of the molded magnesium carbonate body with the slurry, and drying the slurry to form a solid molded magnesium carbonate body

The invention relates to a packaging tool, an industrial glue injection machine and a packaging method. The packaging tool comprises a packaging plate, a clamping unit, and a surface of the packaging plate is provided with a plurality of packaging hole groups distributed at intervals. Each packaging hole group comprises a plurality of packaging holes with the same inner diameter and depth, and the packaging holes in different packaging hole groups have different inner diameters and depths. The clamping unit is detachable and can be selectively installed at different positions of the packaging plate. A plurality of workpieces can be clamped at intervals by the clamping unit, and a plurality of workpieces can be simultaneously inserted into a group of packaging holes for packaging. After the first packaging layer of the workpiece is packaged, the clamping unit is moved to a position so that the plurality of workpieces are simultaneously inserted into the next group of packaging holes with the same inner diameter and depth for glue coating packaging, thereby completing the packaging of different packaging layers, ensuring the uniformity of the size and shape of each packaging layer of the workpiece, reducing the uncertain factors introduced by artificial packaging, and ensuring the consistency of packaging.

The utility model discloses a wall hanging plate device capable of being rapidly installed on site in a fixed-length mode, two adjacent wall hanging plates are spliced through an I-shaped decoration strip, each wall hanging plate comprises a box-shaped face plate and a sealing plate, a rectangular notch is formed in a side plate at the cutting end, and a bottom plate is bent along the rectangular notch to form a cover plate; the I-shaped decoration strip comprises two back-to-back supporting plates and buckle plates arranged at the two ends, and the two ends of a vertical plate of each supporting plate are bent to form a first folded edge and a second folded edge respectively. The two ends of a panel of the pinch plate are bent to form bent parts respectively, an insertion groove is formed between the bent parts and the panel, the two pinch plates are a front pinch plate and a back pinch plate respectively, and the first folding edge and the second folding edge are inserted into the front pinch plate and the back pinch plate respectively. According to the utility model, customized processing does not need to be carried out according to wall surface sizes and decoration requirements of different places, batch production can be carried out according to a uniform size, cutting can be carried out on site, all wall hanging plates are mechanically completed, the mold cost is reduced, and the product size precision and the production efficiency are improved.

The present application relates to a kind of surface patterning microspheres of uniform size and its preparation method and purposes, the preparation method includes: preparing W1 / O initial milk or oil phase O'; adding stabilizer and initiator synthesis W1 / O / W2 complex emulsion emulsion or O' / W2 single emulsion emulsion;Different surface patterning microspheres are prepared by rapid membrane emulsification method.The preparation method of the present application is simple in operation, mild condition, good batch repeatability and easy to enlarge.

The present invention belongs to the field of polymer materials and discloses a porous polymer microsphere and a preparation method thereof, comprising the following steps: (1) mixing polymer seed microspheres with an alcohol solvent, water, and a porogen, controlling the volume ratio of the alcohol solvent to water to be greater than 6.5:5.5, and allowing the mixed solution to form an emulsion under high-speed stirring conditions; the surface of the polymer seed microspheres has hydrophilic groups; (2) stirring the mixed emulsion at a low speed for more than 10 minutes to obtain a suspension; (3) subjecting the suspension to rotary evaporation, washing, and drying after the solvent has fully evaporated to obtain porous polymer microspheres. The present invention only requires a one-step reaction, does not require the use of special additives such as surfactants and etchants, and does not require additional porogens or complex precision equipment. Highly porous polystyrene microspheres with interconnected open pore structures and uniform size distribution can be prepared within 2 hours at room temperature. The microspheres have a large specific surface area and pore volume.

The invention provides an atomic precision metal cluster containing a multi-layer ligand spherical shell and a water phase synthesis method of the atomic precision metal cluster. The aqueous phase synthesis method comprises the following steps: performing first mixing on a metal precursor aqueous solution and a ligand aqueous solution, supplementing water to obtain an initial solution, and performing second mixing; then adding a reducing agent aqueous solution to obtain a reaction mixed solution; carrying out first stirring on the reaction mixed solution, concentrating, carrying out second stirring, and supplementing water; and repeating the operations of concentration, secondary stirring and water supplementation to obtain the atom precise metal cluster containing the multilayer ligand spherical shell. The multi-layer ligand spherical shell is adopted to protect the cluster, so that the cluster core can stably exist in an extremely long time without obvious change, and co-production, storage and utilization of related clusters are facilitated; and the metal clusters with uniform size and precise atoms can be directly obtained and have the same molecular weight, so that the post-treatment step can be simplified, and the feasibility of product amplification and application is enhanced.

The invention belongs to the technical field of biology, and particularly relates to a hybridization chain reaction based on a DNA tetrahedron nanostructure. The present invention proposes an innovative method for triggering an HCR reaction by using a DNA tetrahedral framework (TDF) with an HCR initiation strand at the vertex. The core of the method lies in the special geometric structure of the TDF and the electrostatic repulsion effect between the TDF and a vertex initiation chain, and the effect enables the initiation chain to be in a consistent extension state at the beginning of the reaction. The preset extension state contributes to synchronous acceleration of the hybridization rate between the initiation chain and the hairpin chain H1, thereby ensuring efficient start of the HCR reaction. More importantly, the method can produce HCR products with uniform sizes, solves the problem of inconsistent lengths of the products in the traditional HCR reaction, and greatly improves the quality and predictability of the products.

The invention provides a preparation method of calcium alginate microspheres with uniform size, which comprises the following steps: S1) heating and mixing first edible oil and a first surfactant to obtain an oil phase; mixing sodium alginate with water to obtain a water phase; s2) respectively introducing the water phase and the oil phase into a crisscross microchannel to obtain a water-in-oil microsphere; and S3) curing the water-in-oil microspheres in a curing liquid to obtain the calcium alginate microspheres. Compared with the prior art, the preparation method has the advantages that the oil phase and the sodium alginate aqueous solution are sheared in the intersection channel to form the water-in-oil microspheres, then the water-in-oil microspheres are subjected to the curing reaction in the turbid liquid containing the calcium chloride microemulsion, and finally the calcium alginate microspheres are obtained, so that collision fusion after the water-in-oil microspheres are generated is reduced; therefore, the obtained calcium alginate microspheres have the characteristics of round and uniform shape, uniform size and high curing speed, meanwhile, the operation is simple, and the preparation cost is low.

The present invention provides a glove box protective glove that is easy to don and doff and has no eccentricity. The glove box protective glove comprises a finger portion, a palm portion, a wrist portion, and an arm portion, which are connected in sequence and integrally formed by a compression molding process using a glove mold. The finger portion has a conical structure, and each finger is centrally symmetrical. The palm portion has a uniform thickness throughout and is symmetrical front to back. The wrist portion is wider than the maximum width of the palm portion, and the arm portion has a conical structure with a gradually increasing diameter and is centrally symmetrical. The compression molding process includes the following steps: precisely controlling the raw material ratio and the quality of the molding material; providing pressure control and measurement points in the glove mold to ensure uniform force on all parts of the glove; and after the glove mold is closed, controlling the holding time according to the properties of the molding material and ensuring sufficient venting. By symmetrically designing the overall structure of the finger portion, palm portion, and arm portion, and optimizing the manufacturing process, the problem of glove size eccentricity is effectively solved, ensuring uniform size and performance of the glove product.

The present invention belongs to the field of evaluation of material microstructure, and particularly relates to a method for evaluating the size uniformity and distribution uniformity of the second phase, which is applicable to evaluating the size and distribution uniformity of the internal second phase of materials with different compositions after being processed by different processes. First, the image recognition method is applied to the microstructural characterization photos of the material to obtain the contour information and centroid coordinates of the second phase. The area of each second phase and the shortest distance between the second phases are subjected to deviation normalization using the deviation normalization method, and the data is normalized to the interval [0, 1]. Finally, the size uniformity U1 and the distribution uniformity U2 are obtained. By quantitatively statistically analyzing the uniformity of the second phase, the relationship between the distribution of the second phase and hot working processes such as heat treatment can be established, guiding the optimization of relevant processes to obtain a second phase with uniform size and good distribution, thereby improving the mechanical properties of the actual material. The logic of the present invention is clear, the operation is relatively easy to implement, and the applicable range is relatively wide.

To provide a droplet forming device and a method for producing gel particles, each enabling production of droplets having uniform size.SOLUTION: A droplet forming device comprises an ejection head that ejects droplets of liquid. The ejection head has a cylindrical liquid retention member that retains the liquid, and a vibration unit that covers one end of the liquid retention member and, together with the liquid retention member, forms a liquid chamber retaining the liquid, and ejects droplets based on an applied electrical signal. The liquid chamber has the other end of the liquid retention member that is open to the atmosphere. The vibration unit has a vibration member that vibrates based on the electrical signal, a film-like member with an ejection port through which droplets are ejected, and a resonating member that vibrates based on the vibration of the vibration member and transmits the vibration of the vibration member to the film-like member by vibrating itself. The resonating member is a plate-like member that overlaps and comes in contact with the film-like member in a planar manner.SELECTED DRAWING: Figure 2

The application discloses a filter assembly and belongs to the filtering field, and solves the problem that the filter membrane is damaged due to the bending of the support plate and the intensified abrasion of the filter membrane. The technical solution for solving the problem is that a support body is arranged between two adjacent support plates, the support body supports and holds the central region of the support plate at the two ends at least, so as to prevent the central region of the support plate from warping. The application is mainly used for effectively preventing the downward bending or warping of the support plate, maintaining the straight extension of the whole support plate, avoiding the damage of the filter membrane, and forming the flow channel with uniform size between the adjacent support plates, so that the fluid can flow through the adjacent filter units quickly, and the filtering efficiency is improved.

The utility model belongs to the technical field of isolation guardrails, specifically a retractable isolation guardrail, including a bottom plate; a pair of first support columns are fixedly connected to the top of the bottom plate; a pair of second support columns are provided at the top of the first support columns; a pair of first support columns and a second support column are provided with a group of support plates on one side; a group of protective plates are provided between the support plates; a storage box is provided between the first support columns and the second support columns; a group of support plates are slidably connected in the storage box; a support block is fixedly connected to the bottom of the storage box; a pair of warning lights are fixedly connected to the top of the second support columns. In order to make up for the deficiencies of the prior art and solve the problem that the existing isolation guardrails are generally manufactured in a uniform size, the uniform size has certain advantages in stability and volume of the isolation guardrails, but cannot be disassembled and stored on demand, which leads to the problem that the large volume makes it inconvenient to move when maintenance is required.

The invention provides a total internal reflection structural color microsphere with magnetic response as well as a preparation method and application of the total internal reflection structural color microsphere. According to the total internal reflection structural color microsphere with the magnetic response, when an external magnetic field is introduced and the direction of the magnetic field is perpendicular to the plane of the microsphere, the concave interface of the magnetic structural color microsphere directly faces vertically-incident incident light, and the incident light is subjected to total internal reflection for multiple times at the concave interface and generates a structural color through the interference effect; when a deflection magnetic field is applied to the microspheres, all the microspheres are arranged in an orientation mode in the direction of the magnetic field, at the moment, concave interfaces of the microspheres deflect, the condition that the structural color is generated through the synergistic effect of total internal reflection and interference is not met, and therefore the structural color cannot be generated, and the magnetic response of the total internal reflection structural color microspheres is achieved; the preparation method is simple, easy to operate and low in technical requirement, the structural color microspheres with the micro-nano size, uniform and controllable size can be conveniently prepared, the needed raw materials are cheap and easy to obtain, and the preparation method is suitable for large-scale production.

The application provides a preparation method of quartz processing micro-nano material, which comprises the following steps: obtaining quartz powder material of a required grade by performing preliminary cleaning, rough crushing, fine crushing, rough grinding, magnetic separation and screening on quartz ore raw materials; mixing the obtained quartz powder material with a grinding aid agent, wherein the grinding aid agent is PVA grafted silica microspheres; performing classification on the obtained powder by a high-performance gravity-free negative pressure grinder, and performing separation on the fine powder obtained after the classification by a high-efficiency powder separator to obtain micro-nano material with a particle size less than 150 nm; and removing PVA from the micro-nano material after treatment. After obtaining the quartz powder material with uniform size, performing secondary fine grinding, and adding the grinding aid agent PVA grafted silica microspheres, on one hand, the nano microspheres have a small particle size, and on the other hand, after the quartz powder material is filled with the microspheres, the microspheres assist in impacting and rubbing the quartz particles when grinding, so that the quartz powder material is more easily formed into smaller substances to obtain the micro-nano material with a required particle size.

The utility model discloses a turnover type adsorbent particle classificator, and aims to solve the problems that most enterprises in the existing hemoperfusion device industry adopt manual operation, and no mature machine equipment is used for completing batch production and automatic production of adsorbent particle damage, adhesion and the like, and the turnover type adsorbent particle classificator comprises an outer frame, a discharging mechanism is connected to the interior of the outer frame, a turnover mechanism is connected to one side of the lower portion of the discharging mechanism, a rotary turnover structure and a vibration structure are arranged at the lower end of the turnover mechanism, the turnover mechanism is used for screening out unqualified adsorbent particles with damage, adhesion and the like, and a collecting table is connected to one side of the lower end of the turnover mechanism. Adsorbent particles which are uniform and consistent in size are equivalently transferred through the screw rod, and damaged, irregular, adhered, unround and inconsistent-size adsorbent particles are further screened out in cooperation with the flat plate with a certain inclination, the turnover mechanism, vibration of the vibration machine and the like.

The invention discloses an activity protection device for freeze-drying manufacturing of serofluid lactic acid bacteria, and belongs to the technical field of freeze-drying manufacturing activity protection. And an external temperature control cover. According to the activity protection device for freeze-drying manufacturing of the serofluid lactic acid bacteria, through the use of the dropwise adding mechanisms, a uniform and flexibly-adjustable dropwise adding mode is provided, the uniformity and quality of freeze-dried products are guaranteed, a plurality of groups of independent dropwise adding mechanisms are arranged, and a dropwise adding head is driven by a rotating motor to rotate at a high speed, so that the uniformity and the quality of the freeze-dried products are guaranteed. According to the device, the centrifugal force is applied to a bacterial suspension, so that the bacterial suspension forms liquid drops with uniform sizes under the action of centrifugal force, the dropping angle is accurately controlled by the angle adjusting motor, different receiving containers and process requirements can be met, uniform and controllable dropping is realized, and the problems of different sizes, non-uniform distribution and the like of the liquid drops generated by a traditional dropping mode are solved; therefore, the final freeze-dried product is ensured to have good uniformity and relatively high quality.

This invention discloses a highly comfortable bag backrest material. The raw materials, by weight, include: a plastic material and a solid filler, wherein the weight ratio of the plastic material to the solid filler is 100:(0.1-5). This invention uses a specific gravity of 1000-1100 kg / m³. 3 TPEE with a melt flow index of 3-8 g / 10 min is used to prepare backpack backrest materials with suitable hardness and density, capable of supporting the weight of the backpack and alleviating pressure on the back. Furthermore, the use of titanium dioxide with a particle size ≥3000 mesh as a solid filler, working in conjunction with TPEE, results in backpack backrest materials with good hardness, demonstrating good mixing and processing performance between the plastic material and the solid filler. Simultaneously, the reaction temperature during processing is 170-180℃, and the foaming pressure is 40-50 MPa, which improves the foaming efficiency of the sheet, forming cells of uniform size and structure, giving the sheet good resilience.

The utility model discloses an automatic die-cutting machine for step-by-step cutting of die-cutting products, relates to the technical field of die-cutting machines, and solves the problems that in the prior art, when products with complex shapes or large sizes are cut, the products are easy to deform, and the cutting accuracy is reduced. Comprising a feeding mechanism, a machine body is arranged at the end of the feeding mechanism, and a plurality of tensioning rollers, a first transmission assembly, a precise cutting device, a unified cutting device, a second transmission assembly and a conveying belt are sequentially arranged in the machine body; the precise cutting device comprises a sliding rail, a sliding plate is connected to the sliding rail in a sliding mode, a precise cutting knife is longitudinally connected to the sliding plate in a sliding mode, and the precise cutting knife is connected to a driving chain. A winding roller is arranged at the upper end between the second transmission assembly and the conveying belt. The precise cutting device has the beneficial effects that precise cutting is carried out firstly, then cutting of the uniform size is carried out, each step can be completed step by step to achieve the final cutting target, and the cutting precision is improved.

The application relates to the technical field of high-temperature alloy welding, and provides a method for strengthening a liquid-phase diffusion welded joint and a welding system using the same.S1: after the welding surfaces of two Ni3Al-based alloy blocks are polished, the surfaces are carburized;S2: the attachments on the carburized surfaces are removed, and BNi-2 is selected as an intermediate layer to perform liquid-phase diffusion welding.The beneficial effects are that the welding affected zone is removed through the holding procedure at a first specified temperature T1, and the uniformity of the joint composition and structure is realized.The cooling speed is not less than 5 DEG C / min after the holding to a second specified temperature T2, the nucleation rate of intracrystalline gamma'-Ni3Al phase is increased, and the coarsening thereof is inhibited, and the cubic or near-cubic precipitated phase with uniform size is generated;then the cooling speed is not more than 5 DEG C / min to a third specified temperature T3, the joint and the base material grain boundary M 23 The precipitation and growth of C6 type carbides generate the granular / rod-shaped / strip-shaped strengthening phase which is uniformly distributed along the grain boundaries.

The utility model discloses a manufacturing tool for a U-shaped ring of a crown block heavy punch, which belongs to the technical field of U-shaped ring manufacturing and comprises a base, a working plate detachably connected onto the base, a limiting round tube arranged above the base, a limiting component arranged above the base, a placing area formed between the limiting component and the limiting round tube, a placing frame arranged on one side of the outside of the working plate, and a clamping groove arranged on the other side of the working plate. And an auxiliary clamping hand is placed in the placing frame, so that standardized manufacturing of the heavy punch U-shaped ring can be realized, the problems of non-uniform size and irregular shape in the manufacturing process are avoided, large difference between batches is avoided, and the requirement of standardized assembly is met.

The utility model provides a middle-sized experimental animal bone defect model construction device, which is provided with two symmetrical inclined openings, sawteeth are arranged on the inclined openings, and the sawteeth comprise a plurality of same irregular fan-shaped bodies, so that openings with the same size can be formed on a bone tissue sample, and the same bone tissue modeling sample is provided for animal model research. On one hand, the bevel opening can be directly aligned with the modeling position to be quickly inserted, and defect modeling is quickly completed; on the other hand, the bevel opening can play a role in positioning and fixing, and defect molding is completed by means of tools such as a drill bit. The middle-sized experimental animal bone defect model construction device is simple in structure, easy to operate, low in cost and very suitable for animal model research.