46results about How to "Improve processing uniformity" patented technology

The invention discloses an air-floating shaft rotating soft abrasive flow polishing device, which is used for grinding a slender rod to be processed, comprising a fixed plate, a core polishing device for a slender rod, a workpiece feeding device and a buffer device; the slender The rod core polishing device, the workpiece feeding device, and the buffer device are all fixedly installed on the fixed plate; the workpiece feeding device is used for axial feeding of the slender rod core polishing device, and the buffer device is used for buffering the slender rod core polishing device Axial feed; the slender rod core polishing device includes an internal screw type constraint module, a constraint module mounting seat, a sealing cover, a clamping end cover, an O-ring and a screw rod, and the slender rod to be processed passes through one end of the constraint module mounting seat It is connected with the servo motor through a coupling, and the other end is matched with a rolling bearing. The inside of the constraining module mounting seat forms a constrained flow channel through a sealing cover and a clamping end cover. The invention has high polishing efficiency and good polishing effect, and is extremely suitable for ultra-precision machining of the inner wall.

The invention discloses a preparation method of Bi-2212 high-temperature superconductivity wire, comprising the following steps: firstly, filling superconductivity powder into a pipe; secondly, drawing to process and prepare a secondary compound; thirdly, after drawing the secondary compound, combining the secondary compound with a pure silver rod and a silver alloy rod, and then packing the compound into an AgMn alloy pipe so as to obtain a third compound; fourthly, drawing and processing the third compound into a wire; fifthly, carrying out semi-fused treatment on the wire, and obtaining the Bi-2212 high-temperature superconductivity wire after cooling a furnace. As for the preparation method, the process is simple, the design is reasonable, the manufacturing cost is low, and the application range is wide, and the method can be effectively applied to the preparation process of other relevant superconductivity wires. In the invention, one silver or silver alloy core wire is additionally arranged at the central part of a multi-core wire; therefore, the core wire can be prevented from being broken at the central part of multi-core Bi-2212 wire, the core breakage rate of the wire isobviously reduced, the processing uniformity of the wire is improved, the final uniformity of the wire is improved, and simultaneously the stretching performance of the wire is also improved; and thepreparation method is beneficial to the winding of magnet and other applications of superconductivity wire.

The invention discloses a method for preparing a superconducting wire / strip. The method for preparing the superconducting wire / strip comprises the following steps that 1, a metal package sheathing / ceramic core wire composite wire is wound on a pay-off reel after the metal package sheathing / ceramic core wire composite wire is cleaned, the metal package sheathing / ceramic core wire composite wire penetrates through a first guide pulley, an induction coil device, a second guide pulley and a drawing die in sequence, and the metal package sheathing / ceramic core wire composite wire is clamped on a wire drawing machine drawing device to complete assembling; 2, the wire drawing machine drawing device is started to drive the metal package sheathing / ceramic core wire composite wire to draw; 3, the drawn metal package sheathing / ceramic core wire composite wire is collected, then the assembling and drawing process are repeated, and then the superconducting wire / strip is obtained through heat treatment; and induction annealing and synchronous drawing are carried out on the metal package sheathing / ceramic core wire composite wire during repeated drawing. According to the method for preparing thesuperconducting wire / strip, induction annealing is introduced into the drawing, so that the metal package sheathing of the metal package sheathing / ceramic core wire composite wire rapidly heats up, induction annealing and synchronous drawing are realized, the mechanical properties of the superconducting wire / strip are guaranteed, the core breaking phenomenon is avoided, and the processing uniformity of the superconducting wire / strip is improved.

The invention discloses a wear-resistant high-performance ceramic roller rod and a preparation method thereof. The invention uses fused mullite and fused alumina to replace ordinary mullite and alumina by adjusting the weight of raw materials, so that the final obtained The advanced ceramic roller has excellent wear resistance and high temperature resistance. Adjusting and controlling the addition of inorganic fillers not only improves the strength of the ceramic roller, but also further enhances the thermal spalling resistance of the ceramic roller. The invention also discloses a preparation method of a wear-resistant high-performance ceramic roller rod, which adopts a spiral extrusion molding process, continuous extrusion molding, high production efficiency, high compactness and high mechanical strength of the ceramic roller rod, and reduces the production cost of the ceramic roller rod. The deformation and cracking of the ceramic roller improves the performance of the ceramic roller.

The invention belongs to the technical field of surface finishing processing of mechanical parts, in particular to a magnetic grinding tool finishing processing device and method with an adjustable magnetic field and a self-adaptive aperture. The magnetic grinding tool finishing processing device comprises a magnetic field generating device and a self-adaptive aperture mechanism capable of changing the diameter, the self-adaptive aperture mechanism is arranged on the peripheral side of the magnetic field generating device, and the self-adaptive aperture mechanism and the magnetic field generating device are arranged on the inner side of the workpiece to be machined. The magnetic grinding tool finishing processing device can be subjected to finishing processing on the inner hole surface ofthe magnetic material and the non-magnetic material, the whole processing device is simple in structure, simple in process, good in economic benefit and easy to widely apply.

The invention discloses an electrochemical machining process. The electrochemical machining process includes the steps that a machining disc and a spray nozzle are provided, the bottom surface of the machining disc and the surface of a workpiece are arranged in parallel, the machining disc and the spray nozzle move synchronously, the spray nozzle sprays an electrolyte solution towards the surface of the workpiece, the machining disc and the spray nozzle are in parallel connection with a power supply so as to form two current loops, the first current loop is composed of the workpiece, the electrolyte solution, the machining disc and the power supply, and the second current loop is composed of the workpiece, the electrolyte solution, the spray nozzle and the power supply; the surface of the workpiece is divided into three areas towards the outer edge of the workpiece along the circle center of the workpiece, the first area contains the circle center of the workpiece, the third area contains the outer edge of the workpiece, and the second area is designed between the first area and the third area; and the first current loop is used for machining the first area and the third area of the surface of the workpiece. The center area and the edge area of the surface of the workpiece are machined through the first current loop which comprises the machining disc, a stable electric field is formed, and the machining uniformity of the surface of the workpiece is improved.