Abstract: A shredder includes a shredder box having first and second opposite end walls, and first and second opposite side walls that extend between the first and second end walls. The shredder further includes a shredder rotor positioned within an interior of the shredder box, an access door that is pivotally moveable, and a control system for monitoring various parameters to operate the shredder. A side access region is defined between the first and second end walls when the access door is in the open position. The side access region provides access to the shredder rotor and includes an open region defined between the first and second end walls at the second side of the shredder. The open region has an open top which is free of obstructions extending between the first and second end walls.

Abstract: A heavy-duty shredder, in particular for use in forestry, has a frame; a rotor, which is mounted on the frame so that it can rotate about an axis of rotation and has a drum coaxial with the axis of rotation; a plurality of annular discoidal sectors extending around the drum, integral with the drum and distributed along the axis of rotation so as to form annular cavities between the adjacent annular discoidal sectors; a plurality of first teeth integral with the drum and arranged in the annular cavities between two adjacent annular discoidal sectors; and a plurality of second teeth integral with the drum and aligned with the annular discoidal sectors.

Abstract: A safety system prevents cutting machine operators from being accidentally carried through the infeed chute into the machine's cutting mechanism. An operator wears a safety device on his wrist and/or ankle and a sensor array mounts on opposing sides of the cutting machine's infeed chute. The sensor array elements are wound in opposite directions and connect in series opposing. The magnetic field of the safety device induces a current in the sensor array as it moves in the proximity of the sensor array. The safety system generates a signal which is proportional to the sum of the induced currents. When the signal exceeds a threshold, the safety system shuts off power to the feed mechanism and/or the cutting blades of the cutting machine, preventing injury to the operator.

Abstract: Disclosed is a method for treating fly ash containing an initial carbon concentration to obtain ash containing a predetermined final carbon concentration less than the initial concentration, the method including: —a step of granulometric separation of the ash into at least two fractions, a coarse traction and a fine fraction, the coarse fraction having a granulometry greater than the fine fraction; —a step of extracting carbon from the ash; a method wherein the extraction step is subsequent to the separation step, the extraction step being implemented solely on the coarse fraction, by electrostatic separation, the method including a step of drying the ash during which the temperature of the ash is above 60° C.

Abstract: A separation apparatus having a first tube having an inside diameter and a height, a second tube having an outside diameter and substantially the height of the first tube, the second tube concentric with the first tube, the tubes having a common center-line, a spiral track implemented between the first tube and the second tube, the spiral track descending along the first and second tubes, and a plurality of magnet assemblies positioned on an outside wall of the first tube, providing magnetic fields through the outside wall of the first tube into regions where the spiral track meets the inside diameter of the first tube. A material mixture is introduced at an upper end of the apparatus, entrained in water down the spiral track, and some of the magnetic particles are separated from the material mixture and retained in the magnetic field of individual ones of the magnet assemblies.

Abstract: A centrifugal separator for separating at least one liquid phase and a solids phase from a liquid feed mixture includes a frame, a drive member and a rotating part. The drive member is configured to rotate the rotating part in relation to the frame around an axis of rotation. The rotating part includes a centrifuge bowl enclosing a separation space and a sludge space. The separation space includes a stack of separation discs arranged coaxially around the axis of rotation and the sludge space is arranged radially outside said stack of separation discs. The centrifuge bowl includes an inlet for receiving the liquid feed mixture, at least one liquid outlet for a separated liquid phase, and at least one sludge outlet for a separated solids phase. The upper inner surface of the sludge space forms an upper sludge space angle ? relative the axis of rotation as seen in an axial plane.

Abstract: A multifunctional cleaning machine includes a housing, a water inlet pipe, and a nozzle. A cleaning chamber is defined by a side wall of the housing. The water inlet pipe is connected to the housing. The water inlet pipe has a first water inlet and a first water outlet. The first water inlet is located on the upper side of the housing. The first water outlet is located on the lower side of the housing. The first water outlet is located in the cleaning chamber, and the first water inlet is used for connecting to a high pressure water source. The nozzle is located in the cleaning chamber and includes a connector and a water spray rod. A first water jet is provided at one side of the water spray rod, and a second water jet is provided on the other side of the water spray rod.

Abstract: Disclosed is a pump assembly having slidingly engaged upper and lower sleeves, and a pump having an inlet and outlet ends and a pump chamber therebetween. Movement of the lower sleeve towards the upper sleeve causes the pump chamber to reduce in volume. The outlet end of the pump has a shoulder between a first diameter portion and an outlet nozzle extending downwardly from the shoulder and having a second diameter smaller than the first diameter portion. The lower end of the lower sleeve includes a shield extending from a lowermost rim upwards and inwards to terminate at an orifice that is larger than the second diameter but smaller than the first diameter portion. The shoulder supporting against a lip of the orifice and the outlet nozzle extending through the orifice to terminate at a dispersion location within the shield at a distance L from the orifice.

Abstract: A sprayer assembly for an ion source is disclosed. The sprayer includes a capillary having an outlet, a sheath for the capillary, and an elastic member. The sheath can move relative to the capillary between a first position in which the sheath covers the outlet of the capillary and a second position in which the outlet of the capillary is exposed. When the sheath moves from the first position to or towards the second position, the elastic member provides a restoring force that acts to restore the position of the sheath to or towards the first position.

Abstract: The present invention relates to a system (10) for atomizing and ejecting a liquid (L) for a transdermal delivery.

Abstract: A garden sprayer with a handle positioning structure has a main body, a grip, and a buckle. The main body comprises a handle and an output tube with a positioning ring. The grip is mounted on the main body and configured for controlling water, and the grip has a pressing surface with a groove. The groove has a stopping edge respectively on each opposite side walls and two first positioning notches respectively disposed opposite the two stopping edges. The two first positioning notches are spaced from each other. The buckle has a stopping block with two engaging claws on two opposing back sides, the two engaging claws are spaced by a gap, and each of the two engaging claws having a second positioning notch.

Abstract: A hand-held wireless electric sprayer includes a shell formed by assembling an upper shell and a lower shell, a pump and a battery installed inside the shell, a switch mechanism for controlling the pump to be turned on and off, a liquid inlet pipe communicated with the pump and extending to the outside of the shell, and a spray nozzle communicated with the pump, wherein an outer end of the spray nozzle is provided with a nozzle, the lower shell is provided with a chute integrally formed inward, and an inner end of the spray nozzle is fixedly connected with a slide block; the slide block slides in the chute to realize the length adjustment of the nozzle, the nozzle is connected with the pump by a connecting pipe, an inner wall of the chute is provided with ribs, and the limiting effect of the ribs and the slide block enables the nozzle to stay at a set position; a length of the nozzle extending out of the shell can be adjusted, and the nozzle can reach a stable state by the action of the ribs, which is conveni

Abstract: A sterile spray pump, including a main piston (30), a spray head (40), and a secondary piston (50) fixed inside the spray head (40) and mounted in a vertically movable manner on the main piston (30). A first compression space (10) and a second compression space (20) are formed between the secondary piston (50) and the main piston (30); a main liquid suction cavity (301) communicating with the inner cavity of a container and an air supply port (302) communicating with the main liquid suction cavity (301) are provided in the main piston (30); the air supply port (302) communicates with the second compression space (20), a filter element (601) is fixedly provided in the air supply port (302); the secondary piston (50) includes a secondary liquid suction cavity (501) communicating with the main liquid suction cavity (301), a first exhaust member (502), and a second exhaust member (503).

Abstract: Hand dispenser for cleaning, disinfectant and/or perfuming liquid products, of the type including a container having a dispensing button which operates a piston of a piston pump for dispensing liquid product from a nozzle, and a seat for a refill including a bottle containing a sprayable liquid formulation, the piston pump being indifferently housed in the container or in the refill. The container includes a cover hinged on the container, for closing the seat of the refill, and a mechanical coupling between the cover and the dispensing button, which causes the dispensing button to raise beyond its ordinary rest position, when the cover is opened, and to lower to its ordinary rest position, when the cover is closed.

Abstract: The present invention relates to a dosing device comprising: a container; and a dosing cap comprising: an inner portion provided over the container, wherein the inner portion includes an interior wall, an exterior wall, and a bottom surface; a piston, wherein a bottom surface of the piston is provided on top of the bottom surface of the inner portion; a skirt provided on an outer surface of the inner portion, wherein a top surface of the skirt comprises one or more high portions and one or more low portions; an outer portion rotatably coupled with the outer surface of the inner portion, wherein a bottom surface of the outer portion comprises one or more protrusions and one or more recesses, and wherein the outer portion is provided above the skirt along a vertical axis; and a head comprising an applicator surface and at least one orifice.

Abstract: A method of determining a characteristic of a fluid in an apparatus for applying a coating medium to an object, the apparatus including a fluid line; an outlet; a first coating medium source; a second coating medium source; a cleaning medium source; and a valve arrangement configured to independently bring each of the first coating medium source, the second coating medium source and the cleaning medium source in communication with the outlet through the fluid line; where the method includes conducting a fluid through the fluid line, the fluid including the first coating medium, the second coating medium and/or the cleaning medium; sending ultrasonic waves to the fluid in the fluid line; sensing echo signals induced in the fluid by the ultrasonic waves; converting the echo signals to electronic response data; and determining a parameter value of at least one parameter of the fluid in the fluid line based on the electronic response data.

Abstract: A cleaning concentrate dispenser assembly, including: a housing sub-assembly; an energy source; an RFID reader; a level sensor; a controller (printed circuit board); a cleaning concentrate reservoir; a dispensing pump; and a cleaning concentrate output.

Abstract: The present invention discloses an adhesive applicator for manufacturing a core, a core manufacturing apparatus, and an adhesive application method using the same. The adhesive applicator includes: a nozzle body having at least one adhesive outlet; and a nozzle plug movably provided inside the nozzle body in order to open/close the adhesive outlet. The adhesive outlet includes a nozzle hole for discharging the adhesive from the inside to the outside of the nozzle body, and the nozzle plug includes a plug body movably provided inside the nozzle body to selectively block the nozzle hole, and a plug tip formed to protrude on a fore-end surface of the plug body. The fore-end surface of the plug body has a flat surface which faces the nozzle hole and is orthogonal to an axis of the nozzle hole.

Abstract: A substrate processing apparatus includes a substrate holder, a rotational driver configured to rotate the substrate holder, and an ejection part configured to eject a processing liquid toward a liquid landing point of the substrate. The ejection part includes a plurality of nozzles that is different from each other in at least one of a first angle ? or a second angle ?. A circle is defined. An angle formed by a straight line, which interconnects a foot of a perpendicular line from an ejection point of the processing liquid to the substrate and the liquid landing point, and a tangential line to the circle at the liquid landing point is defined as a first angle ?, and an angle formed by that straight line and a straight line, which interconnects the ejection point and the liquid landing point, is defined as a second angle ?.

Abstract: A liquid discharge apparatus includes a liquid discharge head, a second medium, and a cleaner. The liquid discharge head discharges a liquid on the first medium. The second medium is different from the first medium. The liquid discharge head is dischargeable the liquid onto the second medium to form a test pattern. The cleaner cleans the second medium to remove the test pattern from the second medium.

Abstract: A device for applying a treatment substance to a running paper web or board web (11) by means of at least one curtain applicator (2.1, 2.2) comprising a curtain coating die for applying the treatment substance to an applicator roll (6, 7) which, together with a second roll (6, 7), creates a treatment nip (15) in which the treatment substance is transported from the applicator roll (6, 7) to the respective side of the paper web or board web (11), and the curtain coating die has a slot adjustment (3.1, 3.2) for adjusting an exit slot (14.1, 14.2). To provide a device for applying treatment substances which improves the paper/board quality differently prepared treatment substances can be supplied to the at least one curtain coating die, and the curtain applicator (2.1, 2.2) combines the two operating modes of a film operation mode and a sump operation mode by providing an electrically and/or mechanically actuable adjusting device for the slot adjustment (3.1, 3.2) applied to the exit slot (14.1, 14.

Abstract: In order to provide a device and a method for treating workpieces (102), which allow optimum treatment of the workpieces, a treatment station (114) comprises a treatment chamber (136) that can be flooded for the purpose of treating the workpiece.

Abstract: A method for forming a coated material. The method can comprise heating a coating material to a temperature within an operating window and moving the coating material through a heated hose to a slot die having a die outlet. The method further can include outputting the coating material from the slot die through the die outlet and conveying a web of material past the die outlet of the slot die to apply the coating material from the die outlet along at least a portion of a surface of the web of material as the web of material moves past the die outlet.

Abstract: A dual slot die coater includes a first slot and a second slot to deliver a coating solution in an opposite direction of gravity. The dual slot die coater includes a first die block vertically installed and integrally formed with a base at a rear end of an upper surface of the base; a second die block positioned in contact with the base and alongside the first die block to form the first slot between the second die block and the first die block; and a third die block positioned in contact with the base alongside the second die block to form the second slot between the third die block and the second die block. The disclosed dual slot die coater allows for easy alignment of the die lips.

Abstract: The present disclosure relates to a slot die coating apparatus for coating an electrode active material slurry onto an electrode collector, the slot die coating apparatus including a coating roller, a die comprising a lower discharge opening, through which a first electrode active material slurry is discharged, and an upper die located on the upper side of the lower die and having an upper discharge opening, through which a second electrode active material slurry is discharged, and an upper air vent may be installed in the upper die and a lower air vent may be installed in the lower die.

Abstract: The present application provides a dispensing method for a display panel and a dispensing device for the display panel. The dispensing method for the display panel includes: scanning an outline of a position to be dispensed of the display panel to obtain a dispensing parameter of the display panel; determining whether the dispensing parameter satisfies a preset dispensing condition; dispensing glue on the display panel when the dispensing parameter satisfies the preset dispensing condition. The dispensing method for the display panel provided in the present application can monitor the display panel to be dispensed, so as to dispense glue on the display panel meeting the dispensing condition, thereby improving product yield of the display panel.

Abstract: A die coater inspection device including: a sensor module configured to inspect a lip or the shim of the die coater; a control part configured to control an operation of the sensor module; and a storage part in which reference data on the thickness of the lip or the shim is stored.

Abstract: A dispensing system (1) for industrial robots comprising a base (19) comprising a first end (21) and a second end (23), where the first end comprises a connecting arrangement for a syringe, a connection bracket in connection to the base plate, configured to attach the base to an articulated robot arm (3), a stepping motor (59) that is connected to the second end of the base plate, where the stepping motor comprises a central rotor (61) having a first rotational axis and at least two electromagnets arranged as a stator (63) around the central rotor, a plunger rod (49) having a first longitudinal axis and a second rotational axis and where the plunger rod is in connection to the central rotor, where a rotational movement of the central rotor maneuvers the plunger rod in a direction parallel to the rotational axis of the plunger rod, wherein the plunger rod further comprises a rotational lock, where the rotational lock is in connection to the base plate ensuring that the plunger rod is rotationally static during

Abstract: A complete and comprehensive device for the purposes and applications of permanent and penetrative coatings to a nearly unlimited number of synthetic and natural fiber assemblies (“superstructure assemblies”) or filaments (“shapes”) to enhance their aesthetic appearance with pigment, physical performance by changing strength or elongation, medical capability with antimicrobial material, or environmental sustainability.

Abstract: Proposed is a method for manufacturing a porous carbon surface with improved superhydrophobicity and durability and a method for manufacturing a porous carbon surface with further improved superhydrophobicity and durability of a substrate coated with carbon nanoparticles on the surface using a vapor treatment process. According to the present disclosure, by agglomerating nano-sized carbon particles into a micro-nano composite structure through a simple process of treating a vapor of water, an organic solvent, or a mixture thereof, a porous carbon surface with improved superhydrophobicity and durability with low surface energy and high roughness can be manufactured, and a substrate including the porous carbon surface. This process can be efficiently used in mass production processes in various industrial fields that can utilize porous carbon surfaces because the manufacturing process is simple and inexpensive.

Abstract: Provided is a preparation method for a double-layer working medium target tape with a plasma-enhanced interfacial bonding force for a micro laser thruster. Aiming at the problem that in an existing micro laser thruster, when a working medium is ablated by a laser beam, due to a weak interlayer interfacial bonding force between a transparent film substrate and the coating working medium, sputtering or bulging occurs, which remarkably reduces propulsive performance, a method for treating a surface of a transparent film substrate with a low-temperature plasma is used to increase surface energy of a film and an adhesive force of a working medium layer on a surface of the film, thereby enhancing the interlayer interfacial bonding force. According to the method in the present disclosure, the transparent film substrate is treated with the low-temperature plasma.

Abstract: A multi-array ultrasound system for haptic engagement is provided. The system may include a computing device with a processing system, a tracking device communicatively coupled to the processing system, two or more ultrasound transducer arrays including a plurality of ultrasound transducers, and a driver communicatively coupled to the processing system and the two or more ultrasound transducer arrays.

Abstract: An automated shuttle sorter is disclosed that includes a carriage that is movable from a load position at which the carriage may be loaded, and at least two destination locations into which any contents of the carriage may be provided from the carriage.

Abstract: A cleaning station for a mobile robot includes a fluid vessel and a roller arranged in the fluid vessel. The fluid vessel is shaped to hold a cleaning fluid that at least partially submerges the roller. The cleaning station includes a control system configured to, when the mobile robot is docked at the cleaning station, cause rotation of the roller to direct cleaning fluid from the fluid vessel to a cleaning pad of the mobile robot in order to release debris from the cleaning pad.

Abstract: A substrate cleaning device includes a substrate holder that holds a substrate, a cleaning brush that is provided to be movable between a cleaning position for cleaning the substrate held by the substrate holder and a waiting position outward of the substrate held by the substrate holder, and has a cleaning surface capable of cleaning the substrate held by the substrate holder, a remover that is configured such that liquid is transferrable to the remover, and a driver that moves at least one of the cleaning brush and the remover with respect to another one such that at least part of liquid adhering to the cleaning surface is transferred to the remover when the cleaning surface and the remover come close to each other at a position outward of a position above the substrate held by the substrate holder, before the substrate is cleaned by the cleaning brush.

Abstract: A lens and/or a view screen of an electronic device having at least one case can be cleaned by wiping the view screen with a cleaning component wherein the cleaning component is configured to selectively couple to the at least one case or some other substrate using a magnetic attractive force. The cleaning devices may have secondary applications such as securing fly fishing lures, activating or deactivating a device having a magnetic switch, or preventing sunglasses from sinking. They may also be manufactured without a cleaning component for use with the secondary applications.

Abstract: An adhesive removal tool is provided. An adhesive removal tool for removing adhesive on painted and non-painted automotive parts comprising a bolt coupled through a center hole of rubber wheel via one or more fasteners. The bolt having a threaded portion below a head and meeting a shaft at a midpoint of the bolt and the rubber wheel having an upper lip and a lower lip surround the center hole, the upper lip and the lower lip are surrounded by a donut shaped ethylene propylene diene monomer (EPDM) rubber, wherein the head lies flush on the upper lip and the one or more fasteners lie flush against the lower lip when fastened to the threaded portion.

Abstract: The disclosure discloses a convenient cleaning apparatus and cleaning method for an industrial control computer, including an industrial control computer body (1), and a heat dissipation hole is formed in a front side wall of the industrial control computer body (1), and a heat dissipation net (2) is arranged in the heat dissipation hole; a first cleaning device is arranged inside the industrial control computer body (1), and the first cleaning device is configured to clean the heat dissipation net (2); a plurality of heat dissipation fins (3) are arranged on an outer wall of an upper end of the industrial control computer body (1); and a second cleaning device is arranged outside the industrial control computer body (1), and the second cleaning device is configured to clean the heat dissipation fins (3).

Abstract: A substrate cleaning apparatus includes: a support part configured to support a substrate by bring into contact with a rear surface of the substrate; an annular member disposed to surround a periphery of the substrate supported on the support part and including an inclined surface that is inclined with respect to a horizontal plane in a diametrical direction of the annular member; a rotation part configured to rotate the support part and the annular member; a first supply part configured to supply a cleaning liquid toward the rear surface of the substrate supported on the support part; and a second supply part configured to supply the cleaning liquid toward the inclined surface.

Abstract: A firearm bore cleaner for cleaning a bore of a firearm includes a cleaning segment and a pulling segment. The cleaning segment cleans the bore of the firearm when the cleaning segment is moved along the bore. The cleaning segment includes a tail end connector adjacent a tail end portion. The pulling segment is sized and shaped to be inserted into the bore. The pulling segment includes a head end connector adjacent the head end portion of the pulling segment. A tail end portion of the pulling segment is connected to a head end portion of the cleaning segment. The head end connector of the pulling segment and the tail end connector of the cleaning segment can be releasably connect to each other to couple the head end portion of the pulling segment and the tail end portion of the cleaning segment together in order to form a closed loop.

Abstract: A reaction kettle cleaning apparatus, includes a kettle body and a stirrer, the stirrer being located in the kettle body and including a stirring rod and a stirring portion, where a movable frame is disposed on the stirring rod and is movable along the stirring rod; and a cleaning device is disposed on the movable frame and is configured to clean the kettle body; and the reaction kettle cleaning apparatus further includes a movable control apparatus configured to control the movable frame to move.

Abstract: An enclosure system includes a process unit moving chamber, a management unit moving chamber, and a fixed chamber. The process unit moving chamber includes a first maintenance opening hole through which one side portion of a process unit is exposed and a second maintenance opening hole through which the other side portion of the process unit is exposed, and the process unit moving chamber moves integrally with the process unit. The management unit moving chamber includes a management opening hole through which a management portion of a management unit is exposed, and moves integrally with the management unit. The fixed chamber is connected to a door installed at one side wall part of an enclosure, and includes a docking opening hole extending toward the inside of the enclosure.

Abstract: Systems and methods for controlling algal growth in a condensate drain line. In one embodiment a temperature value is acquired which is indicative of an ambient temperature about the drain line. One or more volumes of algaecide are calculated for injection one or more times per day into the drain line.

Abstract: Disclosed is a battery disposal apparatus including a cutting part configured to cut and divide a battery, and a discharging part configured to immerse and discharge divided pieces of the battery cut and divided in the cutting part in a discharging solution. The cutting part is configured to incise or cut the battery in a preset pattern by water jet. In addition, disclosed is a battery disposal method in which the battery is cut by using the water jet described above and is discharged.

Abstract: The present disclosure relates to systems configured to extract and separate one or more alkali and alkaline earth metals from biomass particles, and related methods.

Abstract: A rehabilitation material for reducing the bioavailability of Cd in soil and its use in immobilization remediation of weakly alkaline soil are disclosed. The rehabilitation material includes an iron mine tailing and an alkali lignin, wherein the iron mine tailing accounts for 80-90% of the sum of the masses of the iron mine tailing and the alkali lignin, and the iron mine tailing is prepared by mixing an iron tailing, mica, and dolomite in a mass ratio of 1:1.5:2.5, and calcining the resulting mixture at 1100° C. for 1 hour.

Abstract: The billet rolling mill comprises two rolls for shaping a blank, each shaping roll being provided with at least one rolling tool and being rotated about an axis of rotation by a drive motor, and a manipulator subassembly for moving the blank with respect to the shaping rolls. The manipulator subassembly comprises a clamp gripping the blank and a carriage moving the clamp at least along a direction of rolling of the blank. The manipulator subassembly comprises a linear motor moving the carriage along the direction of rolling. The direction of rolling is perpendicular to the axis of rotation of the rolling tool. The linear motor is configured for accelerating the blank and selectively exerting on the blank, either a tensile force, to extract the blank from a gap defined between the rolling tools, or a braking force, to limit a speed of ejection of the blank.

Abstract: A cold rolling method, cold rolling equipment, and a cold-rolled steel sheet manufacturing method capable of preventing sheet breakage by sufficiently suppressing occurrence of an edge crack of a material to be rolled during cold rolling. In the cold rolling method, a rolling mill including a plurality of stands to cold-rolls a material to be rolled. An N-th stand (N is a natural number equal to or greater than 2) arranged in an N-th position from an upstream side of the material to be rolled in a transfer direction among the plurality of stands, includes a tapered work roll having a taper formed on an end portion of a roll having a uniform diameter. The N-th stand rolls the material to be rolled with a linear load of 0.8 t/mm or more.

Abstract: A roll exchange mechanism for a reduction roll apparatus, capable of contributing to simplifying work for replacing a roller is provided. A roll exchange mechanism for a reduction roll apparatus according to the present disclosure includes a rail member disposed parallel to a rotation shaft of a roller of the reduction roll apparatus, a placement part disposed in a support frame of a roll unit and configured to be placed on the rail member, a receiving part disposed in an apparatus frame of the reduction roll apparatus and configured so that the rail member is placed thereon, and an opening formed in the apparatus frame of the reduction roll apparatus and configured so that the roll unit can be inserted therein and removed therefrom.

Abstract: A method of detecting chattering in a cold rolling mill, the method includes: a step of predicting occurrence of chattering during rolling of a material to be rolled, by inputting second multidimensional data to a prediction model, the second multidimensional data having been generated based on condition data corresponding to array data related to the material to be rolled, and the prediction model having been trained with an explanatory variable and an objective variable, the explanatory variable being first multidimensional data generated based on one-dimensional array data representing a past rolling record of rolling of rolled materials by means of a cold rolling mill, and the objective variable being a past record of occurrence of chattering corresponding to the past rolling record.