A method for regulating the flow of media that provides a valve having a first pole piece and a second pole piece that are separated by a working gap through which media may flow. The pole pieces direct a first magnetic field through the working gap. A coil generates a second magnetic field when electrical current is passed through the coil and that second magnetic field is capable of opposing the first magnetic field. The current in the coil is set at a first level that corresponds to a desired low rate of media through the working gap. The actual flow rate that results from the first duty cycle of current in the coil is compared to a desired flow rate and the current can be adjusted if the actual flow rate is different than the desired flow rate.

A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.

A method for cleaning a jet engine includes introducing a cleaning medium having solid materials into the engine by way of at least one discharging device, wherein the cleaning medium exits from the discharging device at an exit speed of 80 m/s or less.

A cutting method by applying a particle beam of metallic glass onto a substrate to cut or partially cut the substrate with high production efficiency, low production cost and better environmental protection.

A cutting method by applying a particle beam of metallic glass onto a substrate to cut or partially cut the substrate with high production efficiency, low production cost and better environmental protection.

The present invention provides a nanolayer-lubricated diamond grinding wheel grinding method based on a shock wave cavitation effect. In the method, after a gas pressure regulation valve is turned on, a shock wave generated by an acceleration tube pushes nanoparticles to move forward, and the nanoparticles are then accelerated by a small de Laval nozzle to acquire a high initial velocity. One wave source of a shock wave speed-increase module generates a high-frequency high-strength shock wave, to impact nanoparticles with an initial velocity, to enable the nanoparticles to be continuously accelerated downward in an axial direction of a large de Laval nozzle, until the nanoparticles are embedded on a grinding wheel surface at a maximum speed to form a nanolayer. The other wave source is used to clean impurities on the grinding wheel surface. In a processing process, the nanoparticles of the nanolayer are autonomously released in a core grinding region, to implement self-lubrication and cooling inside the grinding region. This method significantly enhances lubrication and cooling effects and satisfies the green development idea.

The present invention provides a nanolayer-lubricated diamond grinding wheel grinding method based on a shock wave cavitation effect. In the method, after a gas pressure regulation valve is turned on, a shock wave generated by an acceleration tube pushes nanoparticles to move forward, and the nanoparticles are then accelerated by a small de Laval nozzle to acquire a high initial velocity. One wave source of a shock wave speed-increase module generates a high-frequency high-strength shock wave, to impact nanoparticles with an initial velocity, to enable the nanoparticles to be continuously accelerated downward in an axial direction of a large de Laval nozzle, until the nanoparticles are embedded on a grinding wheel surface at a maximum speed to form a nanolayer. The other wave source is used to clean impurities on the grinding wheel surface. In a processing process, the nanoparticles of the nanolayer are autonomously released in a core grinding region, to implement self-lubrication and cooling inside the grinding region. This method significantly enhances lubrication and cooling effects and satisfies the green development idea.

A control valve (100) comprises a conduit (102), a controller (104), a sensor unit (106; 146, 148), a cylindrical housing (112) and one or more regulating columns (124, 126). The conduit further comprises a hollow cylindrical body (114) and two smaller and shorter cylindrical extensions (116, 118) for the insertion of the regulating columns which are orthogonal to the hollow cylindrical body and provide a contactless means to control the flow of the medium (101) in the conduit.

A control valve (100) comprises a conduit (102), a controller (104), a sensor unit (106; 146, 148), a cylindrical housing (112) and one or more regulating columns (124, 126). The conduit further comprises a hollow cylindrical body (114) and two smaller and shorter cylindrical extensions (116, 118) for the insertion of the regulating columns which are orthogonal to the hollow cylindrical body and provide a contactless means to control the flow of the medium (101) in the conduit.

A magnetic-field-guidance system and methods of finishing a workpiece using a magnetic-field-guidance system are provided. The magnetic-field-guidance system comprises a workpiece holder, one or more tooling magnets each comprising a finishing tip, and one or more flexible bags containing magnetic media. The workpiece holder is configured to (a) be secured to a base and (b) secure a workpiece relative to the base. The flexible bag(s) are configured to be disposed on the opposite side and/or same side of the workpiece relative to the one or more tooling magnets. In collaboration with the tooling magnets, the magnetic media contained with the flexible bag(s) direct a magnetic field which thereby guides a magnetic-abrasive slurry to finish the workpiece using Magnetic Abrasive Finishing (MAF).