A base material adjusting method capable of removing an already-existing coating film with one time construction, which is suitable in terms of prevention of health problems of operators and in terms of environmental protection, and capable of suppressing disposal costs of waste. The base material adjusting method includes a coating film removing step of removing an already-existing coating film of a work object of the repainting operation by a wet blast method, and a rust removing step of removing rust generated after the coating film removing step by a dry blast method, and rust inhibitor is not included in slurry used in the wet blast method in the coating film removing step.

A pickling tool configured for pickling a surface of an element, comprising a supply conduit delimiting a supply channel configured to be in pneumatic communication with a source of compressed air laden with a powder of an abrasive product, a removal conduit delimiting a removal channel configured to be in pneumatic communication with a suction source, and a nozzle having an opening that communicates with an exterior and is configured to face the surface, wherein the nozzle is in pneumatic communication with the supply channel and the removal channel. Such a tool thus allows the passage of a flow of air for spraying the abrasive and the suction of the abrasive and of the powder arising from abrasion.

Some methods for making a granular material comprise crushing demetallized slag particles with one or more crushers and screening the crushed demetallized slag particles with one or more screens to separate the demetallized slag particles into two or more fractions, the granular material comprising at least one of the fractions of the demetallized slag particles. Prior to the crushing, ones of the demetallized slag particles having a size that is less than or equal to 2 inches can account for at least 90% of the demetallized slag particles. An iron-compound content of the demetallized slag particles, by weight, can be less than or equal to 10%. Crushing and screening can be performed such that ones of the demetallized slag particles of the granular material having a size that is less than or equal to 1.25 mm account for at least 90% of the demetallized slag particles of the granular material.

A pipe coating removal apparatus (1) for removing all or some of the coating on a pipe, the pipe coating removal apparatus (1) having a pipe support means (2) for supporting a length of pipe. and further having a tool carriage (3). The tool carriage (3) being capable of supporting two or more different types of pipe coating removal tools (4), (5), (6), (7), (8), (80), (81), (82) and/or (70). The pipe coating removal apparatus (1) being capable of causing relative movement between the tool carriage (3) and the pipe support means (2) to remove all or some of the coating on the pipe that is supportable by the pipe support means (2).

The temperature of the chamber housing a shot wheel of a shot blaster is controlled by positioning a fan exterior to the chamber that creates air flow across a mounting plate defining the chamber. The air flow created by the fan may also pass around the bearing surrounding the drive shaft that turns the shot wheel.

The present invention relates to a welding jig micro-cleaning apparatus, and more particularly a welding jig micro-cleaning apparatus including a housing, a sandbox connected to the housing, an air supply unit connected to the sandbox through with a hose, a blasting gun positioned in the housing, a jig fixing portion positioned at a lower first end of the blasting gun, and a controller, wherein the jig fixing portion includes a magnetic unit configured to fix a welding jig.

The temperature of the chamber housing a shot wheel of a shot blaster is controlled by positioning a fan exterior to the chamber that creates air flow across a mounting plate defining the chamber. The air flow created by the fan may also pass around the bearing surrounding the drive shaft that turns the shot wheel.

The invention is directed toward a mobile wet-abrasive blasting system used for cleaning, preparing surfaces, removing coatings, and other abrasive blasting applications. The wet abrasive basting system has a blast pot that includes pilot-controlled pneumatics to control the loading, pressurizing, de-pressurizing, and wash down functions. The wet-abrasive blasting system also uses a floating bung in conjunction with a vent mechanism to further automate the pressurizing steps in setting up the system. The wet-abrasive blasting system also uses pilot-controlled pneumatics to decide the blasting function options of just water, just air, or water/abrasive mix and air. Wet-abrasive blasting systems mix an abrasive media with water and convey the mix to meet compressed air and direct through a blast hose and nozzle.

A method of removing a conformal coating from a circuit board coated with said conformal coating, the method comprising: subjecting the circuit board to a jet comprising dry-ice ejected from a nozzle, to remove said conformal coating from said circuit board.

The temperature of the chamber housing a shot wheel of a shot blaster is controlled by positioning a fan exterior to the chamber that creates air flow across a mounting plate defining the chamber. The air flow created by the fan may also pass around the bearing surrounding the drive shaft that turns the shot wheel.