A classification device includes: a sorting mechanism that sorts a group of powder particles using an airflow; a dust collector that generates the airflow; a measuring instrument that measures a measurement value related to a speed of the airflow; and a control device that performs wind speed control that controls the speed of the airflow so that the measurement value is maintained within a control range.

A device for treating 3D powder printing elements includes a first chamber with a first partial chamber and a second partial chamber separated by at least one screen grid. Grid meshes allow compressed powder residues to pass through. A rotation means rotates the first chamber about an axis of rotation, in particular with a rotary passage. The screen grid is inclined, in particular perpendicular, to the axis of rotation of the first chamber. A filling region allows filling the 3D powder printing elements into the first partial chamber. Gas medium is supplied in the first chamber, in particular in the first partial chamber. Gas medium suction means extract plastic powder residues from the first chamber, in particular from the second partial chamber. The gas medium suction means are mounted in or parallel to the axis of rotation and/or centered by the rotary means, in particular within the rotary passage.

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.

A shot-processing device is provided, and by it they are effectively reused and prevented from being taken out of a cabinet and from scattering. A structure (40) for a flow path that connects the inside of the cabinet (12) and a suction port (70A) of a dust collector (70) includes a part of a route for circulation of a circulating machine (32) and a second flow path (40Y) that connects a chamber for blowing air and the suction port (70A). In the structure for the flow path a classifying part (35) is provided. It includes a first cyclone (36) that classifies particulate objects that include shots as shots that have a diameter that makes them reusable and as the other particulate objects and includes a part of the first flow path (40X), and a second cyclone (44) that includes a part of the second flow path.

A mobile steel grit dryer used to dry steel grit may be configured with a number of different functions and features to assist a contractor in performing steel or other structure maintenance when using steel grit in resurfacing the structure. The steel grit dryer may be configured with a heat process vacuum bypass so that an off-board vacuum, such as a vacuum on a grit recycling system, may be utilized as opposed to having an onboard vacuum. The dryer may include multiple modes so that an operator may use different modes for different environmental conditions. An exoframe may provide for better durability when being transported to different jobsites. A variety of automation and safety features may also be provided to simplify and improve safety for operators.

A system and method of cladding a carbon steel piece with stainless steel according to which the carbon steel piece is cleaned, heated, coated with the stainless steel, and strengthened. In an exemplary embodiment, coating the carbon steel piece with the stainless steel includes melting the stainless steel, atomizing the melted stainless steel, and spraying the atomized stainless steel so that at least a portion of the atomized stainless steel is deposited on the carbon steel piece to thereby coat the carbon steel piece with the stainless steel.

A blasting or stripping booth is provided creating a generally downward flow for treatment of fluid and particle flow, which reduces operator exposure to potentially hazardous debris. The booth comprises an enclosure defining an upper region for a workpiece, a lower region, and a separator assembly. In some instances the separator assembly includes individual separator units which are discrete units, each having a generally square or rectangular plan view configuration which are arranged in an array for providing the required process flow capabilities. Further embodiments utilize structures forming the separator which have an elongated trough-like configuration. These embodiments find a particular application in large-scale stripping or blasting booth used in production environments where workpieces may flow through a treatment system in a serial manner. Other suitable applications include batch type processing of parts.

A method for removal of residual matter includes delivering an ultra high-pressure fluid jet to an intermediate additively manufactured three-dimensional (3D) component to dislodge and remove at least a portion of the residual matter from an internal surface of the intermediate additively manufactured 3D component, or from an external surface of the intermediate additively manufactured 3D component, or both, to form a cleansed additively manufactured 3D component.

An automatically adjustable abrasive recycling system is provided. The abrasive recycling system includes one or more sensors configured to sense at least one characteristic of the abrasive recycling system, and slurry supply mechanism that operates, at least in part, based upon the sensed characteristic to control the operation of the abrasive recycling system. The abrasive recycling system further includes a substantially vertically arranged configuration of component parts. Methodology corresponding to the automatic operation of the abrasive recycling system is also provided.

The self-propelled high-performance shot-peening machine combined with a scarifying machine, for the treatment of coatings surfaces of bituminous conglomerate, asphalt, concrete or metal, is composed of a shot-peening unit (A-A), a suction, filtering, separation and storage unit (B-B), a scarifying unit (C-C) and a mechanic-magnetic unit (d-D) coupled together.

It comes typically to solve the problem of the removal of the new typologies of drop or lamellar road markings, with subsequent regeneration of the macro and micro roughness of the road coating,

subjecting the surface to be treated to two treatmentsintegrated milling and shot-peeningby a single pass, adapting itself to the road profile and guaranteeing to remove only the protruding part of the road markings, subsequently immediately regenerating the roughness and microroughness of said surface, noticeably reducing the critical factor of the working time, eliminating the possibility of error in the application of the treatment.

The basic principle consists in utilizing the six-drum scarifying machine 20, 20 only to remove the protruding parts without breaking into the road coating, the number of rollers of the drums 21, 22, 23, 24, 25, 26 and the rotation speed being automatically chosen by the programme to optimize results and working speed; same principle applies to the shot-peening, where the rotation speed and the quantity of abrasive can vary, aiming to the highest yield and speed, the whole managed by a system software implemented by an electric device like PLC, Tablet, Smartphone or Wi-Fi Server-Router.

It solves also the problem of the recycling of the grit by its overheating with sticking of the bituminous, gummy materials and others, performing their removal by a single pass and their final decontamination from the stuck bituminous materials C in a further subsequent sieve 7 with preliminary cooling by intercooler 7, 7, the avoid their deformation and ovalization for a correct recycling D, 1, 1 and reuse of the microspheres 1, 2, 2.

The technology has been applied to a road lorry with three to five axes, with the aim to have a vehicle allowed to free circulation on the roads to reach the possible yards, airports and so on and to be able to work in moving yards without closing the lane or the section where it is necessary to remove the road markings and remake them immediately after.

An autonomous self-propelled unit (D-D) with suction, storage and housing of the magnetic group completes the regeneration and cleaning action removing from the surface coating any grit possibly dispersed and not recovered by the shot-peeni