10results about "Machining working media" patented technology

This utility model relates to the field of nozzle processing technology, and in particular to a tooling for electrolytic machining of the inner hole of a silicon nitride ceramic nozzle. It includes a base on which a tooling mechanism is mounted for nozzle positioning. The tooling mechanism includes: a main assembly comprising several housings fixed to the top of the base; four circumferentially distributed guide seats fixed inside each housing; a locating pin slidably mounted inside each guide seat; a protruding rod fixed inside each locating pin; a ring mounted inside each housing; four circumferentially distributed guide grooves inside the ring; and the protruding rod located inside each guide groove. A control assembly is mounted on the base and used to control the positioning of the nozzle by the main assembly. Automatic centering and clamping of the nozzle is achieved through rotational drive, ensuring that the inner hole is coaxial with the electrode. A uniform gap is maintained between the electrode and the inner hole for electrolyte flow, and a return channel is provided to prevent liquid accumulation, ensuring the accuracy and stability of the electrolytic machining.

The present application relates to the technical field of turbine double-sided array blade processing of an aero-engine, and particularly relates to a turbine double-sided array blade integrated forming electrolytic machining tool and method, through the continuous feeding of the left and right tool cathodes to the direction of the part to be processed at the same time, the double-sided array blade is simultaneously machined; the machining tool comprises a cathode clamping block, a tool cathode, a sealing device and a support seat device; a plurality of electrolyte input channels are arranged on the left and right sides of the support seat, the liquid of the electrolyte input channels passes through the flow blocking cavity of the sealing device, the electrolyte is integrated and then flows into the machining area, then flows to the current collection area arranged in the cathode clamping block through the built-in plastic insulation device of the tool cathode, and finally flows out of the electrolyte output channel. Through the double-sided multi-feature integrated forming electrolytic machining technology, the machining efficiency and machining precision can be improved; the electrolyte flow channel adopting the reverse flow type flow field design can effectively improve the uniformity of the flow field.

Systems and methods are described for beneficially influencing the surface morphology of conductive materials using electrochemistry. The systems and methods for beneficially influencing the surface morphology of conductive materials use a bimodal process in which a first current type (AC or DC) is applied to an electrolyte between an electrode and a workpiece, followed by a second current type that is different from the first current type used. The bimodal process can be repeated one or more times.

The invention discloses an aluminum alloy surface functionalized passivation layer construction method based on anhydrous ECMP and application of the aluminum alloy surface functionalized passivation layer construction method in diffusion welding, and belongs to the technical field of metal material surface treatment and connection. According to the method, a non-aqueous electrolyte system with terpilenol as a matrix is adopted, and a phosphorus-doped composite passivation layer with double functions of polishing and welding is constructed on the surface of the aluminum alloy in situ through an electrochemical mechanical polishing (ECMP) process. The water-free electrolyte comprises a supporting electrolyte, a film-forming agent triethyl phosphate, a corrosion inhibitor benzotriazole, a nanometer grinding material and a viscosity modifier. The functional passivation layer can be decomposed in a controlled mode in the diffusion welding process, interface diffusion energy barriers are effectively reduced, aluminum atom mutual diffusion is promoted, and high-quality metallurgical bonding is achieved. According to the method, the technical problem that a natural oxidation film hinders atomic diffusion in aluminum alloy diffusion welding is fundamentally solved, the strength of a diffusion welding joint can reach 90% or above of that of base metal, meanwhile, the diffusion welding temperature is reduced by 20-40 DEG C, the process time is shortened by 30% or above, and the method has remarkable engineering application value.

An electrode wire for electrical discharge machining and a preparing method thereof. The electrode wire comprises: a core material (1); an intermediate layer (2) located externally to the core material (1); and a surface layer (3) located externally to the intermediate layer (2). Wherein, the material of the core material (1) is a metal or an alloy, and the material of the intermediate layer (2) is a copper-zinc alloy. The intermediate layer (2) has pits (20) on its surface, and the pit (20) has micro-pits (200) on its surface. The size of the micro-pit (200) is smaller than that of that of the pit (20) on which the micro-pit located. The surface layer (3) discontinuously covers the exterior of the intermediate layer (2) and fills the pits (20) and micro-pits (200). During the preparing process, the copper-zinc alloy is formed inside the electrode wire through electroplating, heat treatment, and drawing processes, while pits (20) and micro-pits (200) are formed on the surface of the intermediate layer (2) via extrusion.

An electrolyte solution for electrochemical processing is provided. The electrolyte solution comprises a substantially anhydrous ionic solvent, an ionizable material in the form of an inorganic salt, and a viscosity modifier. The electrolyte has a viscosity in the range of 1 mPa·s to 50 mPa·s at 20 °C.

The application discloses an electrolytic machining stray corrosion inhibition method based on a zirconium electrode and a bipolar pulse, and comprises the following steps: adopting metal zirconium as a tool electrode; during machining, a bipolar pulse voltage is applied between the tool electrode and a workpiece; through polarity switching of the bipolar pulse voltage, a surface oxide layer of the zirconium electrode is driven to spontaneously form a structure partition with an end face conducting and a side wall insulating in a positive pulse machining stage, so as to inhibit stray corrosion. The application utilizes the synergistic effect of bipolar pulse alternating polarization and the passivation characteristics of the zirconium electrode, effectively shields the side electric field without a side wall insulating coating, significantly improves machining precision, and fundamentally eliminates the problem of anode dissolution loss of the tool electrode caused by a negative pulse in traditional bipolar pulse electrolytic machining.

The invention belongs to the technical field of terahertz vacuum electronic device manufacturing, and particularly relates to a terahertz slow wave structure manufacturing method which comprises the steps that a device to be machined is divided into a substrate and a structural thin plate, and the substrate is used for mechanical supporting, heat dissipation and vacuum sealing; a slow wave structure for realizing electron and electromagnetic wave energy exchange is arranged on the structural thin plate, and the substrate is thicker than the structural thin plate; a slow wave structure is machined on the structural thin plate through femtosecond laser rotary cutting or slow wire cutting, and surface polishing is conducted through electrochemical polishing; the substrate is machined through a conventional precision machining method, and surface polishing is carried out; and carrying out diffusion bonding on the structure thin plate subjected to electrochemical polishing and the substrate subjected to surface polishing. A slow wave structure is machined through femtosecond laser rotary cutting or low-speed wire cutting, the surface quality of a structural thin plate is improved through electrochemical polishing, loss in the signal transmission process is reduced, and high vacuum sealing performance of a terahertz vacuum electronic device in a complex working environment is ensured through diffusion bonding.

The invention relates to the technical field of industrial liquid online monitoring, and discloses an electrolytic machine tool electrolyte monitoring device and method, and the device comprises a housing, a PLC assembly and an upper computer connected with the housing, a circulating pipeline, and a sensor array integrated in the pipeline and a water tank. The sensor array covers a Cr6 sensor, a flow sensor, a conductivity meter sensor, an RH probe and a plurality of PH probes, and a protective shell is arranged outside the key sensor. A plurality of sensors are integrated in a unified circulating system, liquid parameter signals acquired by the sensors are gathered and processed in real time by the PLC component, analysis results are transmitted to the upper computer for centralized display and monitoring, and state early warning is performed by the three-color warning lamp. According to the invention, the defects of low automation degree, non-systematic data, feedback lagging and easy damage of the sensor in the existing monitoring technology are overcome, and comprehensive, real-time and intelligent monitoring of the key parameters of the liquid is realized.

The invention relates to the technical field of precision machining, and discloses an integrated precision slotting method for a steering column, which comprises the following steps: providing a machining platform with a multi-axis numerical control system, connecting a steering column workpiece with an anode of a self-adaptive pulse power supply, arranging a cathode nozzle tool head and connecting with a cathode of the power supply; an acoustic emission sensor is installed on the workpiece or a clamp thereof and used for collecting acoustic emission signals of a machining area in real time; and analyzing the collected acoustic emission signal to identify the process state of the current processing area, and dynamically adjusting the output pulse parameter of the adaptive pulse power supply according to the identified process state. According to the invention, mechanical stress and thermal damage are avoided through a non-contact electrochemical dissolution principle; and meanwhile, based on a closed-loop self-adaptive control strategy of an acoustic emission signal, instability in the machining process is actively inhibited, and the uniformity of material removal is ensured, so that a smooth notch surface which is high in size precision and free of burrs is obtained.