81 results about "Electrochemical machining" patented technology

A near-atomic-scale electrolytic machining method based on an interface self-assembly biomask comprises the steps that firstly, hydroxylation pretreatment is conducted on the surface of an anode of a workpiece, then the surface of the anode is covered with an organic solvent phase containing phospholipid monomers, water-phase electrolyte drops are introduced, molecular self-assembly driving force at an oil-water-metal three-phase interface is utilized, and the surface of the anode of the workpiece is subjected to near-atomic-scale electrochemical machining. And rapidly forming a layer of ultrathin, continuous and stable support phospholipid bilayer mask on the surface of the workpiece in situ. Then, biological nanochannels are embedded in the biomimetic mask to construct a confinement ion transport path. And finally, a precise pulse electric field is applied, electrolyte ions are driven to be strictly limited in the nanometer channel and transmitted to the surface of the workpiece, local anodic dissolution is triggered, and therefore localized material removal of the nanometer scale or even the near-atomic scale is achieved. According to the method, the technical bottleneck that the high-quality phospholipid bilayer is difficult to prepare on the high-surface-energy metal surface is solved, and a new way is provided for ultra-precision electrolytic machining.

The invention discloses a passive bipolar movable mask electrochemical machining device and method for a workpiece. The device comprises a power supply control system, an electrochemical machining system, a motion control system and an electrolyte circulating system, the electrochemical machining system is provided with a first electrochemical machining tank and a second electrochemical machining tank which are oppositely arranged, two electrodes are arranged in each electrochemical machining tank, and two movable masks are pressed and attached to the two faces of a workpiece to form a mask structure. The motion control system drives the two grooves to be closed or separated; the electrolyte circulating system forms flushing and sucking liquid circulation facing the surface of a workpiece through a flushing pipe and a liquid sucking pipe; the power supply control system intermittently switches the polarities of the two electrodes, so that charge distribution on the two sides of the workpiece is alternately changed, and passive bipolar electrochemical machining is realized; according to the method, photoresist is replaced by the movable mask, the process is simplified, the efficient liquid flushing and absorbing mode and the electrostatic induction machining mode are combined, the inter-electrode mass transfer and electric field uniformity are remarkably improved, and the machining efficiency, precision and depth-diameter ratio are improved.

The invention relates to the technical field of electrochemical machining, in particular to a multi-layer array fiber cluster flexible electrode and a complex runner electrochemical polishing method thereof.The multi-layer array fiber cluster flexible electrode is of a multi-layer composite structure and sequentially comprises an insulating layer, conductive metal wire clusters arranged in an array mode and a flexible mold core from outside to inside; the insulating layer is in a bamboo joint shape or is processed with an array groove structure, and the conductive metal wire cluster is formed by bundling a plurality of flexible metal filaments and is arranged in a close array along the outline of the flexible mold core; the multi-layer array fiber cluster flexible electrode solves the problems that a traditional rigid electrode cannot adapt to a bent flow channel, a simple flexible electrode cannot keep a uniform and stable machining gap between the simple flexible electrode and the wall face of a special-shaped flow channel, uneven distribution of an electric field and a flow field in the gap is easily caused, local over-corrosion or incomplete polishing is caused, and the service life of the flexible electrode is prolonged. And a high-uniformity global polishing effect cannot be realized.

This invention relates to a non-contact, low-temperature, intermittent heat exchange pulsed-dynamic electrolytic machining apparatus and method, belonging to the field of electrolytic machining. The apparatus consists of a blade workpiece, a cathode plate, a cathode holder, and an insulating sleeve. The cathode plate undergoes high-frequency reciprocating vibration during radial feeding, coordinated with the synchronous switching of a pulse power supply, to achieve pulsed-dynamic electrolytic machining. In this pulsed-dynamic electrolytic machining method, the cooling medium flows into the insulating sleeve from the inlet of the cooling channel, flows through the cooling channel, and then flows out from the outlet of the cooling channel, reducing the temperature inside the insulating cavity. As the blade is shaped and enters the insulating cavity, the cooling medium undergoes convective intermittent heat exchange with the stray electrolyte within the cooling channel, reducing the temperature and conductivity of the stray electrolyte, and even freezing the stray electrolyte, creating a low-temperature environment around the shaped blade and inhibiting the electrolytic reaction in the stray corrosion zone. Pulsed-dynamic machining promotes the removal of electrolytic products and heat, further improving machining accuracy and surface quality.

The invention discloses an ion channel protein near-atomic scale confinement dissolution electrochemical machining method based on a bionic confinement interface. The method is characterized in that a bionic phospholipid bilayer mask is spread on a workpiece anode to shield a non-processing area, ion channel protein is embedded into the bionic phospholipid bilayer mask to serve as an electrolyte channel, and when the bionic phospholipid bilayer mask is powered on, the anode dissolution reaction is strictly limited in the ion channel protein channel. Millivolt-level picosecond-nanosecond pulse voltage or current is adopted on the time scale so that anode metal atoms can be removed one by one, electrolytic products are discharged in the modes of electrolyte adjustment, microcosmic acting force, micro vibration and the like so as to ensure sustainable generation of electrochemical reaction, and therefore near-atomic-scale electrolytic machining is achieved. The electrochemical machining technology and the biological field are fused in an interdisciplinary mode, the near-atomic-scale electrochemical dissolution reaction space is constructed, the capacity of electrochemical machining for removing materials in an ion form is approached, and near-atomic-scale electrochemical machining is achieved.

The application discloses a kind of complex structure parts electrochemical mechanical polishing equipment based on carrier liquid micro-particle electrolyte, including mechanical vibration mechanism and multi-degree-of-freedom transmission mechanism on base, and mechanical vibration mechanism is equipped with electrochemical processing mechanism between multi-degree-of-freedom transmission mechanism top, electrochemical processing mechanism is connected with liquid storage tank by temperature and humidity adjusting mechanism;Preloaded with carrier liquid micro-particle electrolyte in electrolytic cell, workpiece is clamped by pneumatic metal clamp, under the driving of multi-degree-of-freedom transmission mechanism, workpiece is contacted with carrier liquid micro-particle electrolyte in electrolytic cell all-around movement, simultaneously, voltage is applied by direct-current power supply, and the current loop of connection power supply positive pole, anode workpiece, electrolyte particle, cathode electrolytic cell and power supply negative pole is formed, during electrification process, workpiece surface is formed softened metal oxide film under the electrochemical action of carrier liquid micro-particle electrolyte;Workpiece is contacted with carrier liquid micro-particle in electrolytic cell by mechanical vibration mechanism and is vibrated, and the relative friction of multi-degree-of-freedom movement is generated, and the mechanical removal of surface oxide film is realized, and the electrochemical and mechanical circulation in polishing process is promoted, and the polishing efficiency is improved, and the machining accessibility of complex structure part polishing is good;It has the advantages of high efficiency, good polishing effect, simple operation and low cost.

This application relates to an electrochemical machining apparatus, control method, equipment, and storage medium. The electrochemical machining apparatus includes a main flow channel and a secondary flow channel, which are respectively located on opposite sides of the workpiece and flow through each other with electrolyte. The main flow channel includes a machining zone for electrochemical machining of the workpiece. The secondary flow channel includes a flexible support zone for providing flexible support to the machining zone, and the electrolyte pressure in the flexible support zone counteracts the electrolyte pressure in the machining zone. This application can avoid elastic deformation of the machining zone caused by the thinning of the material thickness in the machining area during electrochemical machining of thin-walled workpieces under high electrolyte pressure conditions, and avoids machining errors, thereby improving machining accuracy.

The invention provides a variable-radius electrode and a pulse dynamic electrochemical polishing method for an inner channel, and belongs to the field of electrochemical machining. The variable radius electrode is composed of a dielectric material elastic driving body, a flexible insulation hinge and a cathode block. Wherein the elastic driving body is a cylinder formed by curling two layers of dielectric materials and a middle rigid reinforced fiber plate, and when pulse voltage is applied, the elastic driving body can generate axial periodic telescopic motion; flexible insulation hinges are connected to the upper end and the lower end of the elastic driving body, a plurality of cathode blocks are fixed between the flexible insulation hinges in the circumferential direction, the axial periodic telescopic motion of the elastic driving body can be converted into the radial periodic reciprocating motion of the cathode blocks, and the radius of the electrode is made to generate periodic pulsation change. In the machining process, the electrode moves in the channel under traction of the traction wire, the radius change period of the electrode is coupled with the pulse power-on period, power-on machining is conducted when the radius becomes large, power-off washing is conducted when the radius becomes small, and pulse dynamic electrochemical polishing of the complex inner channel is achieved.

The application discloses a multi-tool integrated tool for blisk electrolytic machining and a blisk machining method, and relates to the technical field of electrolytic machining, and comprises a tool disc and a cathode frame. The cathode frame is fixed on the tool disc. The cathode frame comprises an insulating connecting plate, an insulating profile cathode base and an insulating rough machining cathode rod. Profile shaping machining cathodes are fixed on the two sides of the profile cathode base. Rough machining cathodes are fixed on the end of the rough machining cathode rod. The rough machining cathodes and semi-finishing cathodes are fixed together through the cathode frame. In the rough machining and semi-finishing of the whole blisk, all blade profiles on the whole blisk can be machined at the same time. The problems of high labor intensity, low machining efficiency, large cumulative error and long machining cycle in the prior art are overcome. The machining precision of each blade is consistent. The product quality after machining is stable. The difficulty of subsequent whole blisk finishing is reduced. The machining efficiency of the whole blisk is improved.

The invention relates to a gas-assisted plasma enhanced electrochemical machining tool and method, and belongs to the field of plasma enhanced electrochemical machining. The tool comprises a tool base body, a blanking cap, an air inlet connector and a sealing gasket. The blanking cap presses the sealing gasket to the upper end of the base body through threaded connection, and an air cavity surrounding the center hole is formed in the base body. In the machining process, compressed air is input into the air cavity through the air inlet connector and sprayed out through the group holes in the bottom of the base body, the electrolyte form sprayed out of the center hole of the base body is restrained, a stable air film layer between the bottom end of the tool and the boundary of the electrolyte is formed, gas plasmas are formed through excitation under a strong electric field, and plasma enhanced electrochemical machining of the large-size electrode is achieved. According to the method, a more stable and controllable gas film condition is provided for plasma enhanced electrolytic machining by utilizing an airflow constraint method, the process window and the application scene of the process are widened, and efficient and high-quality machining of difficult-to-machine materials without tool loss is facilitated.

The invention relates to a manufacturing device for the electrochemical machining of a component, in particular a turbine component, wherein the manufacturing device comprises at least one machining device, which is set up to remove material of the component in accordance with a predetermined electrochemical machining method. It is provided that the manufacturing device comprises at least one cleaning device, which is set up to spray jets of the electrolyte solution onto the component in accordance with a predetermined jet-spraying method in order to remove a residue layer formed on the component during the predetermined electrochemical machining method.

The invention provides a titanium alloy surface microstructure electrolytic machining method and system, and belongs to the technical field of electrolytic machining. In the electrolytic machining process of the titanium alloy, passivation and super-passivation behaviors are shown under different machining current densities, controllable machining of the microstructure on the surface of the titanium alloy is achieved by dynamically adjusting the current density of a machining area, and the method comprises the steps that the alpha / beta phase distribution rule of the titanium alloy is obtained through a metallographic analyzer; preparing a neutral salt solution containing aggressive chloride ions; simulating polarization characteristics of the titanium alloy by using an electrochemical workstation, obtaining a polarization curve, and extracting current density values of a passivation region and a super-passivation region from the curve; and electrolytic machining is conducted through the extracted current density value, the titanium alloy surface alpha / beta phase material corrosion process is regulated and controlled, and microstructures of different depths and shapes are prepared based on titanium alloy alpha / beta phase electrocorrosion differences. In-situ precision electrolytic machining of the microstructure can be achieved, and the preparation method is efficient and convenient.

The present invention relates to a method for simulating the manufacturing of a component, in particular comprising at least one blade (8.1) and / or a blade carrier (8) of a gas turbine, by means of electrochemical machining, wherein the method comprises the step of: providing input parameters (S10; S10'), and the, in particular repeated, sequence of steps: calculating (S20; S20') an electrochemical machining operation based on the provided input parameters; and calculating (S30; S30') a component geometry based on this electrochemical machining operation. The invention further relates to a method for manufacturing a component by means of electrochemical machining, a method for manufacturing a cathode for this manufacturing of a component, a method for designing the manufacturing of the component, and a system or computer program (product).

This application relates to the technical field of electrochemical machining and provides a force-sensing-based electrolyte vibration electrochemical discharge machining device and method. The force-sensing-based electrolyte vibration electrochemical discharge machining device includes an electrochemical discharge power supply, an electrode assembly, a spindle assembly, an electrostatic attraction assembly, a clamping assembly, a moving platform, a force-sensing unit, an ultrasonic vibration unit, an electrolyte replacement assembly, a motion controller, a gas supply unit, a marble platform, an air flotation platform, and a control unit. This device can adjust the discharge gap through force-sensing feedback, and by combining electrolyte vibration and cyclic replacement, it achieves the invention objective of high-precision electrochemical discharge machining of difficult-to-machine materials. In addition, this application also provides a method applied to the force-sensing-based electrolyte vibration electrochemical discharge machining device.

The invention discloses a multi-source vibration and pulse power supply coupling electrochemical composite milling device which comprises a base, a fixing frame, a first translation module, a second translation module, a third translation module, a first vibration module, a second vibration module, a first mounting plate, a second mounting plate, a first connecting rod, a second connecting rod, a rotating module, a cathode, a vibration support and a bearing module. Accurate movement and stable electric conduction of the main shaft are achieved through cooperative control. The vibration frequency and amplitude of a gap between a tool electrode and a workpiece can be accurately regulated and controlled through coupling of a multi-source vibration structure and pulsating power supply, and products are effectively prevented from being attached to the machined surface through a small-gap power supply machining and large-gap washing periodic circulation mode. Multi-source vibration and pulse power supply coupling, electrochemical discharge composite milling efficient rough machining and electrochemical mechanical grinding and milling composite finish machining are fused on the same device, multiple process advantages are integrated, and the machining efficiency and the surface quality of a material component difficult to cut and machine are effectively improved; the method is especially suitable for manufacturing requirements of complex components in the aerospace field.

The invention provides a non-contact electrochemical machining method and device.The electrochemical machining method comprises the steps that the surface of a tungsten filament to be machined is pretreated; a tungsten filament to be processed is arranged in the electrolytic cell module in a penetrating mode; setting electrolyte concentration, temperature, current density and wire speed; the wire moving module is used for carrying out wire moving operation on the tungsten wire to be machined, so that the tungsten wire to be machined penetrates through the electrolytic cell module in a wire moving mode; and according to the target diameter reducing amount and the wire moving speed, the electrolytic current of the electrode module is adjusted, and the dissolution rate of the tungsten wire to be machined when passing through the electrolytic bath module in the wire moving process is controlled. According to the non-contact electrochemical machining method and device, continuous, uniform and controllable precise diameter reduction of the generatrix of the tungsten filament with the large length-diameter ratio is achieved, the machining limit is broken through, the superfine tungsten filament with the better surface quality and the more uniform diameter is obtained, and the production cost is reduced.

The invention discloses a multi-cathode electrolytic machining device and method for an integral component. The device core comprises a cathode fixing ring and a plurality of cathode assemblies used for machining blade channels, mortises, tooth grooves and the like. The cathode fixing ring is connected with a machine tool moving shaft, and all the cathode assemblies can be synchronously driven to conduct collaborative feeding. The outer side of each cathode in the cathode assembly is sequentially sleeved with a side wall insulation sleeve and a circumferential insulation sleeve to form effective insulation. During machining, electrolyte flows in from the upper end of the cathode in a multi-channel center liquid supply mode, enters a machining area from the lower end of the cathode, and finally flows out from side gaps among the cathode assembly, the upper sacrificial disc, the lower sacrificial disc and a workpiece blank. The adopted narrow-strip-shaped cathode blade effectively reduces the machining area and needed current of a single tooth groove, a mortise, a blade channel and the like, the requirement for power of a power source is lowered, and therefore one-time synchronous machining of dozens to hundreds of mortises, blade channels, tooth grooves and the like is supported. The machining efficiency of the whole component is remarkably improved, and the manufacturing cost is effectively reduced.

An apparatus for forming a curved drill hole in a workpiece by electrochemical machining (ECM). The apparatus includes, an ECM drill head, a snake robot and an insulative material surrounding the snake robot. The ECM drill head is attached to a first end of the snake robot. The snake robot includes a movement control assembly adapted to control movement of the snake robot and the ECM drill head attached thereto. The snake robot also includes a plurality of conduits extending within and along a length of the snake robot, including a first conduit of the plurality of conduits adapted to deliver an electrolyte solution to the ECM drill head and a second conduit of the plurality of conduits adapted to remove debris from the ECM drill head.

The invention relates to an electrochemical machining device for an array boss of an integral plate and a machining method of the electrochemical machining device. The electrolytic machining device comprises a rack, an electrolytic bath, a workpiece platform and a cathode. The cathode is of a double-layer tubular body structure and comprises an inner cavity and an outer cavity which are isolated from each other, the inner cavity and the outer cavity are communicated with the electrolyte supply tank through pipelines respectively, and electrolyte outlet holes corresponding to the inner cavity and the outer cavity respectively are formed in the bottom of the cathode. The electrolyte enters the inner cavity and the outer cavity and then flows out from the corresponding electrolyte outlet holes; an insulating layer is arranged on the inner wall of the electrolyte outlet hole, and a chamfer is machined at the bottom of the electrolyte outlet hole. The array boss of the whole plate is machined through a cathode forming method, the corrosion effect of current on the side wall of the boss is avoided through the electrolyte outlet holes arranged in an array mode, the insulating layers and the chamfering structures of the electrolyte outlets and the double-cavity structure of the cathode, and high-precision machining of the micro array boss small in taper and large in height can be achieved.

The application discloses a closed component electrolytic machining stray current regulation device and method, and belongs to the technical field of electrolytic machining. The device comprises a liquid supply part and a stray current regulation part. The liquid supply part provides sufficient electrolyte for the closed component electrolytic machining. The stray current regulation part controls the stray current distribution through a gas isolation insulation method, and protects the formed blade. The application improves the machining precision and stability of the closed component electrolytic machining, and realizes high-quality and high-efficiency machining of the closed component.

The application discloses a deep hole electrolytic machining device and method, and relates to the technical field of machining, and in particular relates to a deep hole electrolytic machining device and method. The structure comprises a base and a tube electrode, the tube electrode is connected with an electrolyte tank, the electrolyte tank is internally provided with electrolyte, the electrolyte flows to the surface of a workpiece through the tube electrode; in addition, the structure further comprises a power supply, the negative electrode of the power supply is electrically connected with the tube electrode, the positive electrode of the power supply is electrically connected with the workpiece, the outer periphery of the tube electrode is sleeved with a suction main body, a sealing structure is arranged on the contact surface between the suction main body and the workpiece, and the suction main body is used for sucking out the electrolyte in the deep hole. The application can adjust the pressure in the inner cavity of the suction main body through the suction main body, can limit the electrolyte flowing area, can improve the machining localization, can form a low-pressure or negative pressure environment in the suction main body, can accelerate the discharge of the electrolyte and electrolytic products from the machining hole, and can avoid the tube electrode from being blocked by the electrolytic products.

The present application belongs to the technical field of precision electrochemical forming processing, and discloses a process control method for precision electrochemical machining gap, comprising: performing tool cathode die assembly quality control, and forming a blade cavity by die assembly; performing tool cathode spatial position control, so that the variation between the spatial position of the tool cathode on the machine tool and the theoretical design coordinate position meets the preset requirement; performing rough machining blade anti-interference control, so that the rough machining blade of the overall structure open blade disc smoothly enters the blade cavity; and performing initial machining gap control, and performing precision electrochemical machining treatment on the rough machining blade of the overall structure open blade disc, so that the balanced machining gap between the blade back and the left tool cathode and the balanced machining gap between the blade basin and the right tool cathode are both kept within the range of 0.01mm-0.05mm. The technical scheme disclosed by the present application can achieve the purpose of accurately controlling the machining gap.

This invention relates to a gap control device, method, and application for near-atomic-scale electrochemical machining of ion channel proteins, belonging to the field of electrochemical machining technology. To address the problems of insufficient gap control precision and difficulty in achieving near-atomic-scale localized dissolution and real-time observation in existing micro / nano electrochemical machining, this invention provides a dedicated device and method. The device constructs a precisely controllable nano / sub-nanometer-scale dielectric cavity layer deposited on the surface of the workpiece anode in a TEM window, and seals it with a tool cathode containing micro-perforations to form a closed cavity capable of storing liquid. The method includes: sequentially injecting a phospholipid-containing organic solvent and an electrolyte containing ion channel proteins into the cavity; utilizing the phospholipid's self-assembly at the interface to form a biomimetic confinement layer, allowing the electrolyte to contact the workpiece anode only through the internal channels of the ion channel proteins; and applying an appropriate pulse voltage to achieve localized electrochemical dissolution of the workpiece anode within an ultrathin gap defined by the dielectric layer thickness.

The invention discloses an efficient and high-precision machining device and method for a key part armature of a servo valve, and belongs to the technical field of precision machining of aviation machinery. The device comprises a base, a baffle, a screw, a machining electrode and an armature, the base is provided with a plurality of sets of symmetrical rectangular grooves, and the armature achieves X-axis, Y-axis and Z-axis accurate positioning through groove bodies and the baffle; the machining electrode is perpendicular to the bottom face of the base and right faces the center of the uppermost armature. The machining method comprises the following steps: mounting a plurality of armatures in a positioning manner, machining center holes from top to bottom in sequence in an electrochemical machining manner, and performing rough machining and finish machining. The problems of existing machining datum change, precision fluctuation and low efficiency are solved, multiple parts can be machined at a time, the positioning datum is consistent, the machining precision reaches the micron dimension, armature machining is not deformed, and the batch quality stability is guaranteed.

The present application relates to the technical field of electrochemical processing, and especially relates to a plating baffle capable of establishing a uniform electric field, which comprises a cathode baffle configured to be arranged in parallel between an anode and a cathode of a plating tank; the area of the cathode baffle is greater than the effective plating area of the cathode; a plurality of openings penetrating the thickness of the cathode baffle are arranged on the cathode baffle; wherein a first type of opening array is arranged in the central region of the cathode baffle, and a second type of opening array is arranged in the edge region of the cathode baffle; the first type of opening and the second type of opening are different in shape, size and / or distribution density, so that the cathode baffle can correct the electric lines of force from the anode to the cathode, and make the electric field distribution reaching the cathode surface uniform, the present application has the effect of actively correcting the electric field distribution between the anode and the cathode, thereby establishing a highly uniform electric field on the cathode surface, and effectively solving the problem of edge effect in the plating process.

The invention discloses an electrochemical machining gap detection system and method based on optical fiber sensing. The detection system comprises an optical fiber sensor, a laser emitting device and a laser detection device. The optical fiber sensor is arranged on the tool electrode, and the detection end of the optical fiber sensor extends to the electrolytic machining gap and directly faces the machining surface of the workpiece; the laser emitting device is connected with the optical fiber sensor so as to be suitable for emitting laser and transmitting the laser to the electrolytic machining gap and the workpiece machining surface through the optical fiber sensor. The laser detection device is connected with the optical fiber sensor so as to be suitable for detecting the electrolyte transmitted by the optical fiber sensor and laser reflected by the workpiece machining surface. Through the optical fiber sensor integrated in the tool electrode, electrolytic machining gap information of a specific machining position can be directly detected and obtained; the optical signal sensitively responds to the change of the machining gap, the real-time performance is high, the detection precision can be improved, the detection process is simplified, and the method can be suitable for a high-speed small-gap electrolytic machining scene.

An apparatus for forming a curved drill hole in a workpiece by electrochemical machining (ECM). The apparatus includes, an ECM drill head, a snake robot and an insulative material surrounding the snake robot. The ECM drill head is attached to a first end of the snake robot. The snake robot includes a movement control assembly adapted to control movement of the snake robot and the ECM drill head attached thereto. The snake robot also includes a plurality of conduits extending within and along a length of the snake robot, including a first conduit of the plurality of conduits adapted to deliver an electrolyte solution to the ECM drill head and a second conduit of the plurality of conduits adapted to remove debris from the ECM drill head.

The device comprises a light source device, an optical lens, a platinum net electrode, a pure titanium electrode, an electrolyte tank with electrolyte and a power source, the platinum net electrode serves as a cathode and is connected with a negative electrode of the power source, and the pure titanium electrode serves as an anode and is connected with a positive electrode of the power source. The light source equipment couples a light beam of ultraviolet light into an electrolyte in the electrolyte tank through the optical lens by virtue of the optical fiber for transmitting the ultraviolet light, and the ultraviolet light irradiates the surface of the pure titanium electrode after penetrating through the platinum net electrode and is treated for a period of time under constant direct-current voltage to obtain a titanium dioxide nanotube with higher photocatalytic performance; and popularization and application of the device for preparing the titanium dioxide nanotube through ultraviolet light synchronous irradiation and anodic oxidation in the technical field of composite electrochemical machining are facilitated. Compared with a traditional method, the preparation method has the advantages that the energy consumption can be effectively reduced, the equipment cost and the operation complexity are synchronously reduced, and large-scale production of nanotubes is facilitated.

The invention relates to a closed component electrolytic machining stability control device and method, and belongs to the technical field of electrolytic machining. The device is composed of a tool, a workpiece, a polygonal cathode, a partition liquid passing rod, an inlet auxiliary device and a pressure regulation and control device. The closed component structure is closed, the flow field accessibility at the vertex angle of the edge of the polygonal cathode is poor, and stable machining is not facilitated. A partitioned liquid passing rod structure is designed, a main liquid cavity is formed in the middle of the partitioned liquid passing rod structure, and a plurality of auxiliary liquid cavities are formed around the main liquid cavity; a liquid outlet hole of the main liquid cavity is located in the end face of the front end of the partition liquid passing rod, and a liquid outlet hole of the auxiliary liquid cavity is located in the side wall of the front portion of the partition liquid passing rod. During machining, the electrolyte flows in from the liquid inlet of the auxiliary liquid cavity after passing through the pressure regulation and control device, flows through the corresponding cavities of the partition liquid passing rods and then is sprayed out from the corresponding liquid outlet to form auxiliary spraying liquid, the auxiliary spraying liquid and the electrolyte flowing out along the side face of the polygonal cathode are subjected to hedging, the pressure of the electrolyte in the hedging area is reduced, the flow field accessibility is improved, and the machining stability is improved.

The invention relates to the technical field of electrolytic machining, and discloses a flow-electricity coordinated regulation ultrasonic composite electrolytic machining device and method.The flow-electricity coordinated regulation ultrasonic composite electrolytic machining device comprises a sealing clamp which comprises a clamp upper cover plate, a clamp lower cover plate and a multistage porous electrode arranged between the clamp upper cover plate and the clamp lower cover plate; the flow control electrode and the electricity control electrode are laminated to form the multi-stage porous electrode, the multi-stage porous electrode has the liquid supply function and the tool cathode function, full-area dead-corner-free liquid supply of the machining gap can be achieved through the micropore flow channel, a uniform flow field is formed, fresh electrolyte is supplemented, hydrogen bubbles and electrolytic products are discharged, and it is guaranteed that materials are evenly dissolved and machining consistency is achieved; stray corrosion is avoided and the processing locality is improved by virtue of a micropore reconstruction electric field, a homogenization corner and a normal vector change area electric field, meanwhile, ultrasonic vibration is matched to strengthen electrolyte updating and precisely and cooperatively regulate and control a flow field and the electric field, the problems of local liquid shortage and difficult product discharge in traditional processing are solved, the method can be adapted to processing of various micro grooves, the flexibility is high, and the processing efficiency is high. And therefore, the machining precision and stability are greatly improved.