Shot blasting and shot blasting booths are used for blasting, sandblasting and shot blasting treatments of metal parts and surfaces, and can be designed for the use of different types of abrasives and shot.
Our extensive experience allows us to identify the specific needs of each customer to design the ideal blast room for their application, whether it is a complex project requiring extensive customization or standard booths of various sizes and versatility.
The usual components in a room for the treatment of metal parts and surfaces are:
- Cabin structure and doors for parts and personnel access.
- The blast room is built with sandwich panels, which are coated with anti-abrasive rubber on the inside to ensure their protection.
- Low-energy bulbs covered by tempered glass are used for cabin lighting.
- The cabinet is equipped with high efficiency filter cartridges for suction and ventilation of the blasting room. These cartridges incorporate an automatic cleaning system using compressed air.
- System for the automatic collection of the abrasive used in the room, thanks to which a significant reduction in production costs and an increase in productivity can be obtained. This system can be manual or automatic, depending on factors such as the size of the room, the required production, the type of parts, or the desired degree of automation.
- The electrical control panel.
The main application of a blast cabin is the blasting or shot blasting treatment of medium to large structures. These processes are carried out in a controlled manner inside the room, which includes a shot blast cleaning system.
Shot blasting booths avoid the problems associated with outdoor work, as blasting or shot blasting in the open air can lead to contamination episodes, or interruptions in productivity due to dependence on weather conditions.
Another great advantage of blasting rooms is that by using a system that collects and reuses the abrasive, better and more efficient abrasives can be used, resulting in a significant reduction in the cost of the process.
The most relevant aspects when designing and installing a blast cabinet are the following:
A blasting cabinet consists of a cabin, which serves as a container. This cabin can be made in various shapes and materials, although the most commonly used are a steel structure and a sandwich panel enclosure that performs an extra function of lowering the noise level.
Access to the cabin
The room access doors are supplied in different formats depending on the requirements of each application, and can be hinged (double) or a special sectional door.
The infeed of parts can also be carried out in different ways, either by means of rails, hoists or special transport trolleys.
Safety and security
The panels and doors that make up the blast cabinets are provided with an internal anti-abrasive rubber coating, which serves as protection.
The lighting is carried out with specific lamps for blasting booths, which are able to withstand direct impacts of abrasive blast media and whose effectiveness is not affected by the dust generated inside the room.
Good lighting is essential for the performance and productivity of the operators, so these lamps are usually placed at a meter and a half from the floor, the most effective point for a good vision of the operator.
Management of generated dust
The blasting cabin is equipped with a filtration system and connecting pipes between the cabin and the filter, which allows to collect the dust generated during the blasting process and to manage it, before sending it to the atmosphere, without exceeding the emission limits established by the laws in force.
Another essential element in a blasting cabinet is the abrasive recovery, cleaning and selection system. To carry out these operations, the installation is equipped, totally or partially, with a system of to-and-fro collectors placed under the trames where the operators are located. These collectors direct the abrasive to a bucket elevator, which transports the abrasive to the upper part of the installation and there, by means of a system of screens and cascades, a cleaning process is carried out to remove the impurities from the abrasive. In addition, shot particles are discarded if, due to their shape or size, they are no longer suitable for an optimal blasting process.
Blast media storage
Once the shot is cleaned, it goes to a storage tank and from there, by means of the nozzles, it is sent back to the sandblasting machine, or set of sandblasting machines, which have been placed inside the cabin depending on the number of operators working.
Finally, the installation is equipped with an electrical control and safety control panel in compliance with current standards.