A method for selective aluminide diffusion coating removal. The method includes diffusing aluminum into a substrate surface of a component to form a diffusion coating. The diffusion coating includes an aluminum-infused additive layer and an interdiffusion zone. The diffusion coating is solution heat treated at a temperature and for a time sufficient to dissolve at least a portion of the interdiffusion zone. Thereafter the aluminum-infused additive layer is selectively removed. An aluminide diffusion coated turbine component is also disclosed.

The present disclosure provides a trenchless multi-stage pipe cleaning device and method combining an artificial tornado and dagger-like mechanical sand. The trenchless multi-stage pipe cleaning device includes a primary pipe cleaning device and a secondary pipe cleaning device that are connected. An outer wall of the pipe cleaning device is provided with multiple air inlet joint pipes evenly distributed in a circumferential direction. The air inlet joint pipes are connected to an air compressor. Each of the air outlet joints is connected to a nozzle. The primary pipe cleaning device is connected to a vibrating screen. The trenchless multi-stage pipe cleaning device further includes a back-end sewage discharge device. The trenchless multi-stage pipe cleaning method includes: supplying compressed air into an inner chamber of the primary pipe cleaning device to mix with mechanical sand, so as to form a primary gas-solid mixed flow; allowing the primary gas-solid mixed flow to enter the secondary pipe cleaning device; forming an artificial tornado by multiple streams of diagonally tangential high-speed air entering an inner chamber of a secondary pipe cleaning device body; changing, by the artificial tornado, a movement trajectory of the primary gas-solid mixed flow into a spiral shape, tangential with an inner wall of a cleaning target; and driving the primary gas-solid mixed flow to move forward to form a secondary gas-solid mixed flow; where during this process, the mechanical sand continuously scrape and collide with the inner wall of the cleaning target, so as to achieve a desired efficient trenchless water-free pipe cleaning effect.

Embodiments of the present disclosure provide a surface treatment composition and methods for using same. The composition for removing contaminants from a metallic surface, can include 3 wt % to 40 wt % of at least one bifunctional alkaline compound, 0.03 wt % to 10 wt % of at least one oxidizer comprising a metal salt, and water, where all weight percentages are based on the total weight of the composition.

A flexible solid electrolyte includes a first inorganic protective layer, an inorganic-organic composite electrolyte layer including an inorganic component and an organic component, and a second inorganic protective layer, where the inorganic-organic composite electrolyte layer is disposed between the first inorganic protective layer and the second inorganic protective layer, and the inorganic component and the organic component collectively form a continuous ion conducting path.

The disclosure relates to the cleaning of oilfield tools made of metal, particularly to the method of reclamation oilfield tools, already used in the mechanical deep-pumping extraction of oil, as well as to the product made with the help of the mentioned method. The method of remanufacturing of standard length rods includes cleaning the rod with at least one cryogen to eliminate environmental contamination and to assist in workplace safety.

An orthopedic device, such as an intramedullary nail for internal fixation of a bone and a method of manufacturing the same. The orthopedic device may be formed from a medical grade powder via an additive manufacturing process. The forming process may include heat treating the additive manufactured component and machining the heat treated additive manufactured component to form the orthopedic device. Further, the orthopedic device may be formed to include an internal sensor probe channel that extends within at least a portion of the wall of the device, but which does not protrude through an outer portion of the wall. Embodiments further include a dynamizing intramedullary nail that accommodate adjustments in the relative axial positions of one or more sections of the orthopedic device. The devise may include features in an inner region of the orthopedic device that may alter an elastic modulus of the orthopedic device.

This invention relates to cleaning of deposits or scale or fouling from external surface of air coolers tubes bundle.

Air coolers in different configurations are used in oil refineries, chemical plants, and power plants to cool process liquids or to condensate gas into liquid. High thermal efficiency of air coolers is critical to maximize production and minimize waste of energy.

Current cleaning methods consist on high pressure water blast, soap (detergents), dry ice blast or using weak acids. Those methods have significant disadvantages: damage to fins, confined space entry, scaffolding, shut-down of the process unit, and more. The invention is based on On-Line pneumatic spraying of dry thin powder, combining chemical and mechanical cleaning simultaneously. Performing bottom-to-top cleaning obviates the need for water, confined space entry, scaffolding, removal of safety nets. Cleaning is performed On-Line during normal operating conditions; there is no need to shut down the process unit and no damage to fins or tubes.

Chemistry is based on a blend of compounds in different ratios to achieve desired cleaning results and to maximize the cleaning effectiveness.

A high-pressure water jet sheet strip sand-blasting descaling cleaning device, a cleaning line and a system are disclosed. The cleaning device includes a cleaning box (7), a washing box (18) and descaling nozzles (6), the descaling nozzles (6) face to the same width direction of a sheet strip (5) and are arranged in a gradient along a conveying direction of the cleaning box (7) to jet covering the sheet strip (5). The system includes the cleaning device, an abrasive collecting box, a high-pressure water supply system, an abrasive supply-recovery-separation system and a sewage recycling treatment system. The nozzles are slantwise arranged in a gradient along the conveying direction, and the neighboring nozzles do not interfere with each other, and are used for cleaning successively, so that a cleaning process is stable and controllable. A high-pressure water jet sand-blasting cleaning technology is combined with a sheet strip conveying system, different specifications of sheet strips can be continuously and stably conveyed while surfaces thereof are cleaned by using the high-pressure water jet sand-blasting acid-free cleaning technology.

A flexible solid electrolyte includes a first inorganic protective layer, an inorganic-organic composite electrolyte layer including an inorganic component and an organic component, and a second inorganic protective layer, where the inorganic-organic composite electrolyte layer is disposed between the first inorganic protective layer and the second inorganic protective layer, and the inorganic component and the organic component collectively form a continuous ion conducting path.

A trenchless multi-stage pipe cleaning device and method combining an artificial tornado and dagger-like mechanical sand is provided. The trenchless multi-stage pipe cleaning device includes a primary pipe cleaning device and a secondary pipe cleaning device that are connected. An outer wall of the pipe cleaning device is provided with multiple air inlet joint pipes evenly distributed in a circumferential direction. The air inlet joint pipes are connected to an air compressor. Each of the air outlet joints is connected to a nozzle. The primary pipe cleaning device is connected to a vibrating screen. The trenchless multi-stage pipe cleaning device further includes a back-end sewage discharge device. In the trenchless multi-stage pipe cleaning method, the mechanical sand continuously scrape and collide with the inner wall of the cleaning target, so as to achieve a desired efficient trenchless water-free pipe cleaning effect.