184 results about "Titanium nickelide" patented technology

The invention relates to the technical field of pipeline dredging and plant medullary core taking-out, and discloses a self-adaptive pipeline dredging and plant medullary core taking-out device which comprises a rod body. The first sleeve seat is sleeved on the rod body in a sliding manner; the second sleeve seat is arranged on one side of the first sleeve seat and sleeves the rod body; the end part is fixedly installed at one end of the rod body through a bolt, a plurality of sets of first supporting rods distributed at equal intervals are hinged to the end part through a hinge shaft, the device is matched with a tension spring through a supporting rod hinge structure, diameter self-adaptive adjustment is achieved, different pipe diameters or marrow core sizes are accurately matched, jamming and damage are avoided, and universality is improved. The nickel-titanium alloy net forms an attached working face, and the working effect is guaranteed. Manual intervention is not needed, real-time adaptation can be achieved in a narrow environment, the locking assembly is stable and reliable, automatic reset is achieved after operation, the process is simplified, efficiency is improved, and the problems that an existing tool is tedious in operation and insufficient in adaptability are solved.

The invention relates to a shape memory wide nickel-titanium alloy plate and a preparation method thereof, and the preparation method comprises the following steps: mixing and smelting alloy raw materials to prepare a nickel-titanium cast ingot, and homogenizing the nickel-titanium cast ingot; cutting off a dead head of the nickel-titanium cast ingot and then slitting the nickel-titanium cast ingot into a to-be-forged ingot blank; the ingot blank is subjected to a composite forging process combining high-frequency forging and low-frequency forging, and the accumulative deformation is 90% or above; a hot-rolled plate blank is obtained through two-stage hot rolling, and first-stage blooming at the temperature of 750-900 DEG C and second-stage finish rolling at the temperature of 700-850 DEG C are included; performing cold rolling on the hot-rolled plate blank to obtain a cold-rolled plate blank; and the cold-rolled plate blank is subjected to heat treatment strengthening, and the shape memory wide nickel-titanium alloy plate with the width being 600 mm or above is obtained. According to the wide nickel-titanium alloy plate prepared through the method, the thickness ranges from 0.3 mm to 3.0 mm, the yield strength is 450 Mpa or above, the tensile strength is 850 Mpa or above, the ductility is 20% or above, and the shape recovery rate is 90% or above.

The invention discloses a bionic automobile passive energy absorption device based on nickel-titanium alloy, and relates to the technical field of automobile passive safety, the bionic automobile passive energy absorption device comprises an anti-collision beam main body, two energy absorption boxes are fixedly arranged on one side of the anti-collision beam main body, the energy absorption boxes are filled with bionic energy absorption inner cores, the anti-collision beam main body, the energy absorption boxes and the bionic energy absorption inner cores are made of nickel-titanium alloy, and the anti-collision beam main body, the energy absorption boxes and the bionic energy absorption inner cores are made of nickel-titanium alloy. And all the components are integrally printed and formed in an additive manufacturing mode. The differential bionic lattice structures of the anti-collision beam body and the energy absorption boxes form a collaborative energy absorption system, and the whole process optimization of gradient buffering of collision loads, layered dissipation of energy and precise deformation control is achieved. The anti-collision beam body buffers instantaneous load at the initial stage of collision, peak load is reduced, stable conditions are created for follow-up energy absorption of the energy absorption box, the anti-collision beam body dissipates collision energy, and residual energy is further dissipated in a layered mode through the bionic lattice structure of the energy absorption box.

The invention discloses a preparation method of a bionic vibration reduction structure of an aircraft wing leading edge, relates to the technical field of aircraft wings, and completes establishment of a bionic kangaroo jumping structure, a bionic origami honeycomb structure and a bionic woodpecker spiral structure based on three-dimensional modeling software. A bionic kangaroo jumping structure, a bionic origami honeycomb structure and a bionic woodpecker spiral structure are regionally filled into a traditional aircraft wing entity model in Magics software, and based on a laser powder bed melting technology, nickel-titanium alloy powder is used for printing and forming the filled traditional aircraft wing entity model; and preparing a PU-MXene mixed solution, and plating the PU-MXene mixed solution on the surface of the printed and formed solid model of the wing of the traditional aircraft through an electrochemical deposition method. The effects of damping the leading edge of the aircraft wing, improving the rigidity, absorbing sound, reducing noise and being super-hydrophobic are achieved.

The invention discloses a bionic Voronoi-nickel titanium-hydrogel heterostructure implant and a preparation method thereof, and relates to the technical field of bone implantation, the construction of a Voronoi porous structure and the preparation of a bionic Voronoi-nickel titanium skeleton are completed through an innovative design method by referring to the structural concept of human bone trabecula, and then the bionic Voronoi-nickel titanium skeleton is used as a substrate to prepare the bionic Voronoi-nickel titanium hydrogel heterostructure implant. And preparing the bionic Voronoi-nickel titanium-hydrogel heterostructure implant by adopting a drying gel forming method. The implant integrates the mechanical advantages of high strength and low modulus of the nickel-titanium alloy and the structural characteristics of high connectivity and high specific surface area of the bionic Voronoi porous structure, the defect that hydrogel is weak in bearing is effectively overcome, meanwhile, the hydrogel has the buffering and energy absorbing effects, multifunctional time sequence delivery and release of antibiosis, anti-inflammation and bone regeneration promotion can be achieved, and the requirements of all stages of bone repair are met.

The invention discloses a stealth coating material for aviation aircrafts. According to the invention, a three-layer composite structure design is adopted; the intelligent sensing layer is composed of graphene quantum dots and a piezoelectric nanofiber composite network, so that real-time sensing of electromagnetic wave signals is realized; the tunable metamaterial layer comprises a liquid crystal elastomer matrix and nickel-titanium alloy nanowires dispersed in the liquid crystal elastomer matrix, and electromagnetic parameters of the material are dynamically adjusted by applying an electric field or a temperature field; vanadium dioxide nanoparticles, a photonic crystal structure and carbon nanotube aerogel are integrated in the multispectral stealth layer, and radar, infrared and visible light multispectral synergistic stealth is achieved. The coating is further integrated with a microencapsulation repairing agent and an intelligent control system, and has the self-repairing and self-adaptive adjusting functions. Compared with the prior art, 0.1-40 GHz ultra-wide frequency band radar wave absorption is achieved, the radar cross section is reduced by 25-30 dB, the infrared radiation characteristic is reduced by 80% or above, the surface density is only 1.2-1.5 kg / m, the weight is reduced by 65% compared with a traditional coating, and a key material technical support is provided for a new generation of stealth aircrafts.

The utility model discloses a thermal power plant air preheater with nickel titanium alloy function coating belongs to air preheater technical field, a thermal power plant air preheater with nickel titanium alloy function coating includes the shell, a layer nickel titanium alloy function coating covers the shell outside, the heat exchange subassembly is rotationally arranged in the shell, the shell upper and lower sides are provided with the air inlet, the air outlet, the smoke outlet and the smoke inlet respectively with heat exchange subassembly intercommunication, this technical scheme can set up nickel titanium alloy function coating, can prevent the wall thickness thinning of air preheater because of abrasion, reduce the air preheater's air leakage rate, improve equipment overall integrity, and then reduce the maintenance use cost, can reduce the environmental pollution caused by the abrasion problem of air preheater simultaneously.

The utility model provides a novel cardiac pacemaker lead fixing device belongs to medical appliance technical field, this novel cardiac pacemaker lead fixing device, include: lead body, the inside of lead body is equipped with thin metal wire, and the surface is provided with rotating handle. The utility model: the lead body is passed through the protection sheath pipe, and the anchor head end structure of lead body one end is moved to the inside of heart, until the main helical silk of nickel titanium alloy is made on the anchor head end and is fixed with the outer layer of myocardium, further adjusts the rotating handle on the surface of lead body to make the electrode end continue to move, the diameter between a plurality of inner layer's auxiliary micro helical silk changes in the process of rotating to drive a plurality of anchor block rotation and move and pass through endocardium, cooperate a plurality of anchor block surface's anchor hook and enhance the stability of lead body fixed, realize the purpose of anchor head end grading anchor operation.

This invention relates to the field of medical device technology and discloses a surgical instrument, particularly a malleable surgical instrument suitable for single-port laparoscopic surgery, comprising an inner rod assembly, an outer rod assembly, and a handle assembly. The outer rod assembly is made of annealed metal (such as pure copper or copper alloy), which can be hand-shaped and maintain a bent shape; the inner rod is made of nickel-titanium alloy multifilament or stranded rope, enabling low-resistance rotation in a bent state. The inner rod is rotated by a handle wheel, and in conjunction with the axial push-pull of the rear handle, 360° real-time angle adjustment and opening / closing of the working part (clamps / scissors) can be achieved with one hand, without the need for removal from the body. This invention solves the problems of traditional straight rod instruments being unable to reach narrow areas, pre-bent instruments not being able to be adjusted intraoperatively, and existing malleable instruments requiring two hands for external angle adjustment, thus improving surgical efficiency and shortening cleaning and sterilization time.

The invention provides a silver-nickel-titanium electric contact material and a preparation method thereof. By adopting a nickel-titanium alloy material as a main additive, the welding resistance of the electric contact material is improved while the good machinability of the material is maintained. NiTi is introduced as a main additive to be added into an Ag matrix to improve the fusion welding resistance of the material, meanwhile, a small amount of trace copper is also added to mainly improve the wettability of the material, and the C powder and the titanium carbide powder improve the fusion welding resistance of the material. In addition, a powder metallurgy process is adopted, material proportion is easy to control, process flow is short, and cost is low. The rapid plasma electric spark sintering speed is high, the time is short, and the material density is high.

The application discloses an obstructive sleep apnea device and method; the device comprises a mouthpiece carrier, an electrode stimulation module and a control unit, the electrode stimulation module comprises an integrated flexible circuit board transmission link, the transmission link is integrated with a stimulation electrode with a nickel-titanium alloy support strip on the inner side of the mouthpiece carrier, and the stimulation electrode can apply electric stimulation to the genioglossus muscle or hypoglossal nerve; the external control unit is provided with a microcontroller and an acoustic sensor; the method first collects an environmental background signal, processes the signal to generate a signal determination threshold, then collects a human respiratory acoustic vibration signal in real time, processes the signal to generate a respiratory sound energy value, compares the two to determine an abnormal respiratory event; after determining the abnormality, a gradient output electric stimulation is output, and a dynamic feedback mechanism is combined to adjust the stimulation intensity; when the stimulation intensity is zero and there is no abnormal signal, it is determined that the intervention is completed and the standby state is entered; the application can adapt to environmental noise, avoid current mutation discomfort, closed-loop control intervention intensity, and is suitable for sleep apnea auxiliary intervention.

The application relates to the technical field of medical suture materials, and particularly discloses a non-absorbable suture with tissue self-adaptive performance, which comprises a core layer, a transition layer and an outer layer; the core layer and the transition layer are fixed through hot melt adhesion, and the outer layer is coated on the surface of the transition layer through electrostatic spinning; the core layer is a polyether ether ketone fiber with a diameter of 50-100 mu m and a tensile modulus of greater than or equal to 3 Gpa; the transition layer is a nickel-titanium alloy wire braided net with a thickness of 40-60 mu m, and the wire diameter of the nickel-titanium alloy wire is 20-30 mu m; and the outer layer is a poly-lactic acid-glycolic acid copolymer coating layer containing nano-hydroxyapatite with a thickness of 30-50 mu m; and the application further provides a preparation method of the non-absorbable suture. The non-absorbable suture has the advantages of tissue self-adaptive performance, persistent mechanical support and bioactivity, can effectively avoid tissue cutting, abrasion and suture loosening, and can reduce the incidence of postoperative complications such as inflammation and pain.

The utility model discloses an insole with cross-stitch needle holes in the technical field of footwear accessories, which comprises an insole body, a plurality of groups of needle holes are uniformly formed in the surface of the insole body in a penetrating manner, the inner walls of the needle holes are covered and coated with nano silica gel layers, memory alloy is embedded in the needle holes, and the inner walls of the needle holes are coated with nano silica gel layers. The insole body is made of memory alloy, the memory alloy is made of nickel-titanium alloy materials, the outer edge of the insole body is fixedly wrapped with a reinforcing edge, a superfine fiber cloth layer is arranged on the surface layer of the insole body, a high-density sponge layer is arranged on an embroidery layer of the insole body, and the antibacterial and deodorant effects of the insole body are improved through the arranged superfine fiber cloth layer. The shape memory alloy is embedded in the needle hole of the embroidery layer, the hole diameter of the needle hole can be driven to be enlarged according to the increase of the temperature of the insole body, so that the ventilation efficiency is improved, the comfort of a user is improved, and the buffering and damping performance of the insole body is improved through the arranged silica gel air bag layer.

The application relates to the technical field of nickel-titanium alloy pipe machining, in particular to a cutting equipment for nickel-titanium alloy pipe machining, which comprises a cutting equipment body, an adjusting mechanism is arranged at the upper end of the cutting equipment body, and the nickel-titanium alloy pipe is clamped at two ends according to the size of the nickel-titanium alloy pipe. When the two ends of the round pipe are clamped, the two ends of the round pipe are provided with a round pipe jacking mechanism, the telescopic rod is synchronously telescoped, the sliding sleeve slides on the surface of the limiting slide column, the outer jacking of the supporting pipe sleeve plate is realized, the inner wall of the round pipe is jacked tightly, the notch deformation is prevented, the horizontal position is adjusted according to the cutting position of the round pipe by the telescoping of the electric telescopic rod, the problem that the cutting opening position is prone to deformation after the nickel-titanium alloy pipe is cut into two sections is solved, the notch round pipe inner diameter can be jacked, and the notch deformation is prevented.

The invention discloses a flexible actuator based on nickel-titanium alloy and a preparation method, and relates to the technical field of fruit picking flexible actuators. The nickel-titanium alloy woven skeleton comprises a nickel-titanium alloy woven skeleton, the nickel-titanium alloy woven skeleton is of a tubular structure formed by weaving at least one nickel-titanium alloy wire, and the outer side of the nickel-titanium alloy woven skeleton is coated with a coating layer; an upper end ring and a lower end ring are sequentially arranged below the nickel-titanium alloy woven framework from top to bottom, the nickel-titanium alloy woven framework is fixedly connected with the upper end ring, and the upper end ring and the lower end ring are fixed through a plurality of hollow stand columns. The axial stretching amount of the inhaul cable is accurately controlled through the motor driving mechanism, the weaving angle of the nickel-titanium alloy weaving framework is actively changed, so that the radial rigidity of the tubular structure is continuously adjusted, conformal enveloping of an object to be grabbed can be achieved through radial shrinkage, the robot is adaptive to objects of different sizes and shapes, and the mechanical performance of the robot is improved. And the rigidity regulation and control range is wider, and the control precision is higher.

1. The name of the design product: double mouth clamp. 2. The use of the design product: for cutting nickel-titanium alloy anastomosis clamp. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a memory nickel-titanium alloy medical catheter and a manufacturing method thereof, and relates to the technical field of medical instruments, the memory nickel-titanium alloy medical catheter comprises a catheter body, and the catheter body is made of nickel-titanium alloy. The shape memory effect, superelasticity, biocompatibility and other core performance of the nickel-titanium alloy can be guaranteed, and a foundation is laid for clinical application of the catheter; the microscopic cleanliness (the maximum size of non-metallic inclusions is smaller than or equal to 10.0 microns, and the percentage of looseness and the area of the non-metallic inclusions is smaller than or equal to 0.45%) is strictly controlled, so that a fatigue crack starting point can be reduced, the fatigue resistance of the catheter is remarkably improved, and the high-fatigue requirements of high-frequency use scenes such as intracranial stent related catheters are met; the roughness control of the outer surface Ra < = 0.2 [mu] m and the inner surface Ra < = 0.4 [mu] m not only can reduce the adhesion of bacteria and proteins, reduce the risks of inflammation, rejection reaction and thrombosis, improve the biocompatibility, but also can avoid the influence of surface roughness on the subsequent processing quality, and prevent the performance abnormality or fracture of a terminal product.

The invention discloses a nickel-plated titanium alloy vapor chamber and a preparation method thereof, and relates to the technical field of vapor chamber preparation. The vapor chamber is composed of an upper cover and a lower cover which are made of titanium alloy materials, the surface of the vapor chamber is coated with a nickel plating layer, and the preparation method of the vapor chamber comprises the steps that a part welded with a capillary structure is subjected to monomer passivation, then the upper cover and the lower cover are subjected to laser sealing and vacuumizing pre-sealing, and a semi-finished product with a high-vacuum-degree inner cavity is formed; and then the surface of the semi-finished product is subjected to nickel plating treatment, and finally opening breaking, liquid injection and sealing are conducted. According to the method, vacuumizing and pre-sealing are carried out before nickel plating, the technical problems that in a traditional technology, due to high-temperature baking, a vapor chamber swells, and an inner cavity is polluted by nickel plating liquid medicine are effectively solved, meanwhile, it is guaranteed that high binding force exists between a nickel plating layer and a titanium alloy base body, and the product has the light weight, high reliability and excellent heat dissipation performance.

This disclosure provides a process for preparing fine-grained nickel-titanium shape memory alloy rods for medical use, comprising: forging a heated nickel-titanium alloy ingot through multiple passes, performing multiple high-temperature continuous rolling passes, and then performing thermomechanical treatment to obtain fine-grained nickel-titanium shape memory alloy rods. This invention, through a combination of specific multi-pass forging and strictly temperature-controlled high-temperature continuous rolling, utilizes a robust dynamic recrystallization mechanism to fundamentally refine and homogenize the austenitic matrix grains, and completely breaks down the continuous brittle Ti2Ni phase distributed along the grain boundaries into a randomly dispersed distribution, thereby obtaining fine-grained nickel-titanium alloy rods with high purity and excellent microstructure. This solves the practical problems caused by the coarse grains and brittle phase segregation of the original cast nickel-titanium alloy, such as easy intergranular fracture, difficult processing and forming, low yield, and poor fatigue life in medical applications.

The application discloses a bionic variable stiffness interlocking structure suitable for a planetary lander and a preparation method, and relates to the technical field of deep space exploration. The bionic variable stiffness interlocking structure of the application reserves a gap, an auxiliary rib or a cylinder as a weak end, the weak part is preferentially dissipated damage under load, and the overall secondary stiffness change is realized through truss fitting and locking and compression. The application adopts a partition functional arrangement, uses a martensite dominant nickel-titanium alloy lattice support in a landing impact energy absorption part, relies on martensite reorientation to realize efficient energy dissipation, low residual strain and shape recovery, uses an austenite dominant nickel-titanium alloy lattice support in a main load bearing core area, and uses the high modulus and buckling resistance characteristics to guarantee the structure stiffness and stability. Through the collaborative combination of the two types of alloy units, the load bearing, buffering and adaptive variable stiffness integration are realized, the planetary landing process multi-load coupling working condition requirements can be effectively met, and the structural reliability and buffering performance of the lander under deep space extreme environment are improved.

The application belongs to the technical field of archwire correction, and provides a nickel-titanium alloy archwire with high elasticity and precise root control and a preparation method thereof. The nickel-titanium alloy archwire with high elasticity and precise root control comprises an archwire body, the archwire body comprises a nickel-titanium alloy base body, Nb and Zr, and the molar ratio of Ni to Ti in the nickel-titanium alloy base body is 50.8:49.251.2:48.8. The application also provides a preparation method of the nickel-titanium alloy archwire with high elasticity and precise root control. The application solves the core problems that the elasticity and strength of the traditional nickel-titanium alloy archwire are difficult to be considered together and the root control precision is insufficient in orthodontic treatment. The elasticity recovery rate of the archwire is greater than or equal to 98%, the yield strength is increased to 850 MPa-950 MPa, and the archwire has differential surface roughness, which can meet the high elasticity demand in the initial alignment stage of teeth and realize the precise control of the tooth root position in the fine adjustment stage, is suitable for the whole period treatment of oral orthodontics, and has extremely high clinical application value.

The nickel-titanium alloy sliding cover comprises a sliding sheet, a connecting sheet and a clamping sheet which are connected in sequence, the sliding sheet, the connecting sheet and the clamping sheet are connected to form a sheet-shaped structure with a U-shaped rotary section, a limiting protrusion is formed on the face, close to the clamping sheet, of the sliding sheet in a protruding mode, and the limiting protrusion is connected with the clamping sheet. The nickel-titanium alloy sliding cover is made of nickel-titanium alloy. The nickel-titanium alloy sliding cover is made of nickel-titanium alloy, and the nickel-titanium alloy has hyperelasticity, a shape memory effect and good biocompatibility and is not prone to deformation in orthodontic treatment. In addition, a limiting protrusion is formed on the face, close to the clamping piece, of the sliding piece in a protruding mode, compared with a traditional mode of adopting an elastic arm, the limiting mode of the limiting protrusion is better in structural reliability, the pressure of an orthodontic wire and the external force applied to the sliding cover by a patient can be well borne, deformation is not prone to occurring in the treatment process, and the service life of the sliding cover is prolonged. And the structural stability is further ensured.

The present application belongs to the technical field of valve, and discloses a valve device with variable temperature sensing capability and a thermal mechanical training method thereof. The valve device comprises, from top to bottom, an upper fixed shell, an upper limiting disc, an upper fixed flange disc, a deformation sheet, a lower fixed flange disc, a lower limiting disc and a lower fixed shell, wherein the upper fixed shell is connected with the lower fixed shell; the deformation sheet is connected with the upper fixed flange disc and the lower fixed flange disc through studs, and a limiting cylinder is arranged in the middle part of the deformation sheet; the deformation sheet is made of nickel-titanium alloy with double-way shape memory; the upper limiting disc and the lower limiting disc are respectively formed with an upper limiting groove and a lower limiting groove; the opposite ends of the limiting cylinder respectively pass through the upper fixed flange disc and the lower limiting flange disc and extend into the upper limiting groove and the lower limiting groove; and the upper limiting disc and the lower limiting disc limit and control the deformation sheet through the limiting cylinder and the upper limiting groove and the lower limiting groove. The present application solves the problem that the temperature sensing control capability of a temperature sensing valve is very single.

This utility model discloses a waterproof female-pin electrical connector, relating to the field of electrical connection technology. It includes a male pin body, a female pin body mounted on the male pin body, and a protective assembly. The protective assembly includes two protective shells mounted on the female pin body, rotatably connected by a first rotating shaft between the two shells. A sensing assembly includes a fixing pin connected to the inner wall of the protective shell, a nickel-titanium alloy wire sleeved on the fixing pin, and a drive plate connected to the nickel-titanium alloy wire. A support member is mounted on the inner wall of the protective shell, rotatably connected to a second rotating shaft. The drive plate is rotatably connected to the second rotating shaft and has a push rod connected to it. By incorporating the sensing assembly, abnormal temperatures can be monitored in real time. When the electrical connection overheats due to poor contact, overload, or other factors, a timely response can be provided to the heat dissipation assembly.

The invention discloses an electrically-serially-connected nickel-titanium alloy wire shrinking and pressurizing device. The device comprises a device main body, wherein the device main body comprises covering cloth, sewing threads and nickel-titanium alloy wires; the two sets of fixing ends are located at the two ends of the contraction pressurizing device, each set of fixing ends is provided with a plurality of ceramic pieces at intervals, the single nickel-titanium alloy wire is sequentially wound on the ceramic pieces at the two ends in a back-and-forth bending mode to form an S-shaped winding structure, and the two-side covering cloth is integrally laid on the upper end faces and the lower end faces of the nickel-titanium alloy wire and the ceramic pieces. The nickel-titanium alloy wires are sewn and fixed on the covering cloth by adopting sewing threads; the two ends of a single nickel-titanium alloy wire extend out of the two fixed ends to form nickel-titanium alloy wire ends, the nickel-titanium alloy wire ends at the two ends are wound around the aluminum bars respectively, and the nickel-titanium alloy wire ends and the wound aluminum bars are fastened through soldering tin to form the nickel-titanium alloy wire shrinkage pressurizing device in an overall electric series connection mode. And the end of the nickel-titanium alloy wire is wound to extend out of the end part of the outer side of the aluminum bar and is communicated with an external lead for performing power-on control on the contraction pressurizing device.

The utility model belongs to the technical field of net bag processing, and particularly relates to a sight glass fetching net bag which comprises two nickel-titanium alloy wires, the central parts of the two nickel-titanium alloy wires are mutually fixed, the four ends of the two nickel-titanium alloy wires are jointly and fixedly connected with a connecting rod, and the mutually fixed position of the central parts of the two nickel-titanium alloy wires extends outwards and is fixedly provided with an end cap. The central parts of the two nickel-titanium alloy wires are fixed through forming processing equipment; the two nickel-titanium alloy wires are fixedly installed to form four strands of nickel-titanium alloy wires which are installed on the outer side of the connecting rod, so that the four strands of nickel-titanium alloy wires are matched to clamp foreign matters when the endoscope is used, and the two nickel-titanium alloy wires can be uniformly and fixedly installed through the four arc-shaped plates in the forming process. And meanwhile, the two nickel-titanium alloy wires can be more conveniently formed in cooperation with sliding of the bending assembly and the arc-shaped plate.

The application discloses a method for predicting mechanical properties of a nickel-titanium alloy part based on deep learning, and comprises the following steps: determining initial characteristics of the nickel-titanium alloy required by a mechanical experiment; manufacturing two different nickel-titanium alloy parts, respectively performing tensile and compression tests on the samples, collecting corresponding data, and forming an initial data set by combining all the collected data with printing parameter data; pre-processing the initial data, dividing the initial data into a training set and a test set according to a proportion, using printing parameters of additive manufacturing as input values of a deep learning model, using performance parameters of the mechanical experiment in the data set as output values of the deep learning model, constructing a mechanical property prediction model of the nickel-titanium alloy, training the mechanical property prediction model by using the training set data, and testing the mechanical property prediction model by using the test set data after the training is completed; and the application can predict the mechanical properties of the nickel-titanium alloy with high accuracy and improve the research efficiency of the nickel-titanium alloy.

The utility model provides a high-strength wear-resistant high-pressure rubber hose, and belongs to the technical field of high-pressure rubber hoses. Comprising a hose body, the supporting rings are arranged on the surface of the rubber pipe body; the supporting strips are arranged between every two adjacent supporting rings, and the supporting strips are in a spiral shape; the plurality of chambers are arranged in the supporting ring; the thin pipes are arranged between every two adjacent cavities and used for communicating the two cavities; the piston is arranged in the cavity in a sliding manner; the spiral groove is formed in the supporting ring and communicates with one end of the cavity; the nickel-titanium alloy wire is arranged in the spiral groove, and one end of the nickel-titanium alloy wire is connected with the piston. The supporting strips are arranged to provide overall radial supporting force, the situation that the inner pipe diameter of the rubber pipe is reduced due to excessive bending is avoided, the blocking condition is avoided, the local bending degree of the rubber pipe is limited through the supporting rings, and stability of the inner shape of the rubber pipe is guaranteed in an all-around mode.

The application discloses a kind of biomimetic Voronoi-nickel titanium-hydrogel heterostructure implants and preparation method thereof, it is related to bone implant technical field, draw lessons from the structural concept of human bone trabecula, complete the preparation of Voronoi porous structure construction and biomimetic Voronoi-nickel titanium skeleton by innovative design method, again with the biomimetic Voronoi-nickel titanium skeleton as base, adopt drying gel method to prepare biomimetic Voronoi-nickel titanium-hydrogel heterostructure implant.The implant integrates the mechanical advantages of high strength, low modulus of nickel titanium alloy and the structural characteristics of high connectivity, high specific surface area of biomimetic Voronoi porous structure, effectively makes up the short board of hydrogel bearing weakness, while hydrogel has buffering energy absorption function, can realize the multi-functional time sequence release of antibacterial, anti-inflammatory, bone regeneration promotion, adapt to the needs of each stage of bone repair.

The application discloses a kind of bionic passive energy-absorbing devices of automobile based on nickel-titanium alloy, it is related to the technical field of passive safety of automobile, including crash beam main body, two energy-absorbing boxes are fixedly arranged in crash beam main body side, bionic energy-absorbing inner core is filled in energy-absorbing box, the material of crash beam main body, energy-absorbing box, bionic energy-absorbing inner core is nickel-titanium alloy, and is integrally printed into shape by additive manufacturing mode respectively.The differentiated bionic dot matrix structure of the crash beam main body and the energy-absorbing box designed in the application forms a synergistic energy-absorbing system, achieving full-process optimization of collision load gradient buffering-energy layered dissipation-deformation precise control.The crash beam main body first buffers the instantaneous load in the initial stage of collision, reduces the peak load, and creates stable conditions for subsequent energy absorption of the energy-absorbing box.The crash beam main body dissipates collision energy, and the remaining energy is further layered dissipated by the bionic dot matrix structure of the energy-absorbing box.