Disclosed is an improved automatic hub forging die lubricant cleaning device, comprising a lifting hydraulic cylinder, a limiting block, a hinge A, a hydraulic piston rod, a fixed connecting rod, a hinge shaft, a connecting plate, a hydraulic cylinder, a hinge B and the like. The device has the advantages that the labor efficiency is improved, the production intensity is reduced, and the generality is strong; and corresponding cleaning scrapers can be set according to the surface shapes of different hub dies and only need to be replaced via general bolt connectors, so that the cost of equipment is reduced.

The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

The present invention generally relates to a method of reducing contamination from plastics. The resulting purer plastic can be used in demanding applications.

Disclosed is a supercritical-state cleaning system, comprising a cleaning chamber (4), a gas booster apparatus (11), a first heating apparatus (5), and a carbon dioxide supply apparatus. The cleaning chamber (4) is separately connected to the first heating apparatus (5) and the carbon dioxide supply apparatus. A vacuum pump set (1) is connected to the cleaning chamber (4). Compared with the prior art, in the Invention, air introduced when a workpiece enters a cleaning chamber is completely removed, so as to prevent mixing of CO.sub.2 and air, thereby improving a cleaning effect.

A cleaning agent composition containing, (a) a nonionic surfactant containing a polyoxyalkylene alkyl or alkenyl amine [hereinafter referred to as component (a1)] in which the alkyl group or alkenyl group has 8 or more and 18 or less carbons and the oxyalkylene group has an average number of added moles of 1 or more and 8 or less, (b) a quaternary ammonium salt-type surfactant [hereinafter referred to as component (b)], (c) a polycarboxylic acid or a salt thereof, and water, wherein a content of (d) an anionic surfactant [hereinafter referred to as component (d)] is less than 35 mass % relative to a total content of components (a1) and (b), and the content of component (d) is 20 mass % or less relative to a content of all surfactants. The cleaning composition has excellent cleaning power for oil stains and denatured oil stains, and in a method of cleaning such stains.

This invention provides a structure for applying on a steam cleaner to control the amount of steam through PWM, including: a casing, one side of which is fixedly installed with a power line, the output end of which is electrically connected to a power switch, the output end of which is electrically connected to a control board, and the output end of which is electrically connected to a pump, steam generator, and display screen; a water tank, which is fixedly installed at the bottom of the inner side of the casing.

Provided is a system, method and device for electrodynamic dust shielding. The system includes an electrodynamic dust shield device external to an object having lunar dust. The electrodynamic dust shield device electrodynamically removes unwanted material from the object. The method includes positioning an electrodynamic dust shield device near an object to be cleaned from dust, and providing an electric field with the electrodynamic dust shield to remove dust from the object to be cleaned.

Provided is a coating film removing equipment that is a device including: a cleaning tank; a supply device configured to supply a cleaning liquid to the cleaning tank; a conveyance device configured to convey a coated film in a longitudinal direction of the coated film such that the coated film passes through the cleaning tank; a suction box that is disposed in the cleaning tank and surrounds a part of a conveyance path of the coated film with a gap through which a film can pass; a removing mechanism disposed in the suction box, the removing mechanism being configured to remove a coating film from the coated film; and a discharge device for discharging the cleaning liquid and the removed coating film from the suction box to an outside of the cleaning tank.

A method for efficiently and safely cleaning an apparatus for a tin compound and a highly purified apparatus for a tin compound are provided. A method of cleaning an apparatus that has been in contact with a tin compound having formula (1) includes at least steps (A) to (C) in this order: (A) a step of cleaning the apparatus with a non-protonic solvent, (B) a step of cleaning the apparatus with an acidic aqueous solution and/or alkaline aqueous solution, and (C) a step of cleaning the apparatus with ultrapure water having a resistivity of 17 M.Math.cm at 25 C.

R.sub.pS.sub.nX.sub.m(1)

R is a hydrocarbon group, p is an integer of 0 to 3, X is a hydrolyzable substituent, and m=4-p.

The present disclosure relates to compositions and methods for cleaning silica deposits from a turbine. A method of cleaning a turbine is disclosed that can include contacting a deposit on a surface of the turbine with a composition and removing at least a portion of the deposit from the surface of the turbine. The composition can include a tetrafluoroboric acid and a urea component, and the deposit includes silica.