Preservation lines are mainly used for protection of sheet metal and components with a thin layer of primer coating, or for basic color application in the storage and processing stage.
They combine preheat dry, surface preparation, cleaning, coating, and drying processes on one production line. When leaving the system, freshly processed parts can be stored for a long period of time until they are needed for the subsequent manufacturing process without the risk of corrosion or rust.
These systems provide a high degree of automation, and they can easily be integrated in continuous flow production. If needed, they can be incorporated with other working stations and processes, including leveling, cutting, welding, and final coating.
They also provide significant economic benefits for high-volume production and quality preservation as most procedures – including blast cleaning, dust removal, surface preparation, coating, and drying processes – are fully automated.
Preservation lines are offered in different configurations depending on the workpieces and process objectives. Typically, the line consists of a hydraulic loading device, a conveyor, moisture heating chamber (preheating), a shot blasting machine, a dust collector, a painting chamber, a conveyor, and a hydraulic unloading device.
Parts may travel through the machine by different means, including roller conveyor (P Series), “bow tie” rollers or on conveyor (PC Series), and overhead conveyor (VPP Series).
The key advantage of Gostol-TST’s preservation lines rely in the shot blasting process, which is performed by the ir sm@rt multi-option blast wheels ranging from 5.5 to 30 kW.
The blast wheels number, horsepower, location, and angles, as well as frequency regulation of blast wheel’s revolutions are based on the process requirements.
After use, residual abrasive media falls down the bottom of the blasting chamber, where it is conveyed by screw conveyors and a bucket elevator to an automatic media cleaner.
The abrasive reclaimer provides continuous handling and recycling of abrasive media based on particle size in order to maintain optimal and consistent quality blasting.
For heavily regulated applications, a magnetic and/or vibratory particle separator can be added to precisely sort the abrasive shots based on their size and density.
All shot blasters are equipped with PLC, display, timer, automatic or manual mode, automatic start-up of the blast wheels, working-hours counter, and other basic features.
Blast wheels and blasting chamber inner walls are protected by wear-resistant shields made from manganese steel liners for extremely long service life.
The blasting chamber is sealed with several lines of rubber curtains on both ends, which ensure abrasive media is kept inside.
Blast wheels can be equipped with a frequency drive and ir sm@rt valve to precisely control the flow of media for optimal results.
Transport of workpieces can be performed by Morris chain, Power & Free conveyor or conveyor with trolleys.
Anti corrosion protection line