Preservation Lines Deliver Multi-Step Surface Finishing in a Single Machine

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Complete systems for blast cleaning and placing a protective coating, preservation lines are extremely useful on plates and profiles that require multiple treatments.


For example, structural steel components are commonly processed by preservation lines because they are prone to rust quickly and fail with potentially catastrophic consequences if not covered with a suitable, protective coating.


Rosler has extensive experience preparing structural steel components for use in constructionshipbuilding, and the production of all kinds of heavy-duty vehicles, trucks, railway vehicles, agricultural implements, or construction equipment. We understand the importance of applying proper surface finishing processes to these components for safety and longevity.


Offering shot blasting, painting, and more in a single source, preservation lines are a great option for a variety of industries, especially those utilizing structural steel components including steel plates, beams, round bar stock, and tubes.



Components & Functions


Preservation lines incorporate material handling, blast cleaning, and protective coating and/or painting in a single process. While customized options and accessories can be added in, preservation lines typically include six key components.


Rosler's preservation lines are customizable to your needs. This diagram shows common components included.


Material Handling (1)


These integrated transport systems utilize roller conveyors, cross transport units, and other methods to move sometimes large and heavy work pieces before and after processing within the preservation line.


Blow-Off Units (2)


Designed to remove water, dust, leaves, and other loose contaminants before blasting, these stations help ensure components are clean enough for the subsequent finishing process. They may also be combined with brush-off units. 


Rosler blow-off unit


Pre-Heaters (3)


Used in front of the shot blast machine to melt snow and ice, pre-heaters ensure that the work pieces do not carry any moisture into the shot blast machine. The pre-heater also serves a dual function, bringing work pieces to the optimum temperature of about 100° F (40° C) for the subsequent cleaning coating process.


Shot Blast Machines (4)


Using propelled media, this section of the machine removes rust and scale from the work piece and creates the correct pre-paint surface profile/roughness. Work pieces move through the shot blasting area on roller conveyors.


Paint / Coating System (5)


Automatic, high-speed, gantry paint systems apply paint and protective coatings in this step of the process. The paint cabin also contains any overspray and paint fumes through mist filtering, roller brush systems, and the air filtration systems.


Paint Dryers (6)


Post treatment of components within the drying station ensure that paint and coatings applied in the paint cabin are appropriately dried and cured for improved adhesion and life expectancy. These dryers frequently utilize excess heat from the pre-heater to minimize power use by up to 10 kW.   


Rosler paint dryer


The Rosler Way


Rosler has the experience and expertise to solve your surface finishing challenges by developing a preservation line to meet your needs. We partner with you to find a better way, the best machine, and the best finishing results. Contact Rosler today to discuss your unique challenges.


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