Method and system for detecting a cleaning process in a radar level gauge configured to determine a fill level of a product contained in a tank, the radar level gauge comprising a transceiver configured to provide a transmit signal, S.sub.T, to be propagated towards the product by a propagating device, to receive a reflected signal, S.sub.R, resulting from a reflection of the transmit signal at a surface of the product, and to determine a fill level in the tank based on the received reflected signal, wherein the method comprises: at a measurement position above the fill level and a known distance from a reference position near a ceiling of the tank, determining a difference in signal amplitude between at least two different fill level measurements; and if the determined difference in signal amplitude exceeds a predetermined threshold value, determining that a cleaning process is ongoing in the tank.

A cleaning device is configured to include a first cleaning tank that holds water to which a small amount of an additive is added as a first cleaning fluid, a second cleaning tank that holds water, a water-based cleaning agent, an alkaline cleaning fluid, or a hydrophilic organic solvent as a second cleaning fluid, a first microscopic air bubble generation device, a first circulating pump, an ultrasonic wave emitting device, and a carrier device. Hydrophobic oil is removed by a cleaning target being exposed to the first cleaning fluid including microscopic air bubbles sprayed from a nozzle in an interior of the first cleaning tank, after which hydrophilic oil is removed by ultrasonic cleaning in the second cleaning tank.

A cleaning device is configured to include a first cleaning tank that holds water to which a small amount of an additive is added as a first cleaning fluid, a second cleaning tank that holds water, a water-based cleaning agent, an alkaline cleaning fluid, or a hydrophilic organic solvent as a second cleaning fluid, a first microscopic air bubble generation device, a first circulating pump, an ultrasonic wave emitting device, and a carrier device. Hydrophobic oil is removed by a cleaning target being exposed to the first cleaning fluid including microscopic air bubbles sprayed from a nozzle in an interior of the first cleaning tank, after which hydrophilic oil is removed by ultrasonic cleaning in the second cleaning tank.

A pickling production line comprises a material-holding apparatus, a pickling zone, and a water wash zone; the pickling zone and the water wash zone are independently arranged; the material-holding apparatus is filled with magnesium alloy waste, and self-rotates successively in the pickling zone and the water wash zone for pickling and water washing respectively. In the pickling production line for magnesium alloy waste material, the magnesium alloy waste material is pickled and washed more thoroughly; coatings and impurities on the surface of the magnesium alloy waste material are removed, the efficiency of the cleaning and the consistency of the cleaning are high, and each piece of equipment in the entire production line is connected in a compact manner; the invention has a high degree of automation, low environmental pollution, conserves resources, is highly efficient in production, and is suitable for the bulk pickling and cleaning of magnesium alloy waste material.

A pickling production line comprises a material-holding apparatus, a pickling zone, and a water wash zone; the pickling zone and the water wash zone are independently arranged; the material-holding apparatus is filled with magnesium alloy waste, and self-rotates successively in the pickling zone and the water wash zone for pickling and water washing respectively. In the pickling production line for magnesium alloy waste material, the magnesium alloy waste material is pickled and washed more thoroughly; coatings and impurities on the surface of the magnesium alloy waste material are removed, the efficiency of the cleaning and the consistency of the cleaning are high, and each piece of equipment in the entire production line is connected in a compact manner; the invention has a high degree of automation, low environmental pollution, conserves resources, is highly efficient in production, and is suitable for the bulk pickling and cleaning of magnesium alloy waste material.

A washing cabinet for cleaning a part. The washing cabinet comprising: a sonication tank configured to contain a volume of liquid; at least one ultrasonic transducer configured to direct ultrasonic energy into the liquid in the sonication tank; a spray chamber disposed above the sonication tank; a spray system configured to direct liquid into the spray chamber; a part holder configured to support a part to be cleaned in the washing cabinet; a catch tray; an actuator system coupled to the part holder and the catch tray; the actuator system configured to move the part holder between an upper spray position in the spray chamber and a lower sonication position in the volume of liquid in the sonication tank; the actuator system configured to move the catch tray between a first tray position in the spray chamber and a second tray position; the catch tray positioned between the part holder and the sonication tank when the part holder is in the upper spray position and the catch tray is in the first tray position in the spray chamber; a liquid retaining tank separate from the sonication tank; and the catch tray having a tray outlet configured to direct liquid into the liquid retaining tank when the catch tray is in the first tray position in the spray chamber.

A washing cabinet for cleaning a part. The washing cabinet comprising: a sonication tank configured to contain a volume of liquid; at least one ultrasonic transducer configured to direct ultrasonic energy into the liquid in the sonication tank; a spray chamber disposed above the sonication tank; a spray system configured to direct liquid into the spray chamber; a part holder configured to support a part to be cleaned in the washing cabinet; a catch tray; an actuator system coupled to the part holder and the catch tray; the actuator system configured to move the part holder between an upper spray position in the spray chamber and a lower sonication position in the volume of liquid in the sonication tank; the actuator system configured to move the catch tray between a first tray position in the spray chamber and a second tray position; the catch tray positioned between the part holder and the sonication tank when the part holder is in the upper spray position and the catch tray is in the first tray position in the spray chamber; a liquid retaining tank separate from the sonication tank; and the catch tray having a tray outlet configured to direct liquid into the liquid retaining tank when the catch tray is in the first tray position in the spray chamber.

To improve propagation performance and uniformity of ultrasonic waves more easily, even when treating multiple treatment objects. An ultrasonic treatment apparatus according to the present invention includes: a treatment tank capable of containing a treatment object and a treatment liquid for immersing the treatment object; and an ultrasonic application mechanism that applies ultrasonic waves to the treatment liquid, wherein the treatment tank has a long axis where cross-sectional shapes are substantially identical to each other, and a wall surface to a scheduled liquid level height line of the treatment liquid is formed by a concave surface, and the ultrasonic application mechanism is installed at a position where an angle θ formed by a normal line of an oscillation surface of ultrasonic waves and the scheduled liquid level line of the treatment liquid is 5° to 80°.

There is provided a cleaning method and a cleaning apparatus capable of removing dirt on electrical contacts, the dirt being unable to be removed with deionized water, without adversely affecting a plating solution and a substrate holder which is a member for holding a substrate. A cleaning method according to the present disclosure is a cleaning method for a substrate holder having electrical contacts for supplying electric power to a substrate by contacting the substrate to plate the substrate, the method including a cleaning step of cleaning the electrical contacts attached to the substrate holder with a citric acid aqueous solution.

Pen-type hazardous material applicators are provided useful in applying metal pretreatment material to intricate geometries, such as blind holes, through holes, rivets, crevices, chamfers, counterbores, countersinks and other difficult to access surfaces are provided.