Suction and blowing for metal coating are crucial stages to ensure surfaces are perfectly dry and uniform prior to industrial painting. For metal components manufacturers, a cleaning system is typically installed before the painting process to remove all impurities from the parts, preventing defects in the final coating.
After cleaning, components pass through high-temperature ovens to let residual water evaporate. However, the geometry of certain parts can cause water to pool in hollow cavities and hard-to-reach areas, which can severely compromise the quality of the finish.
In this article you can discover everything about suction and blowing for metal coating.
The problem of residual water in coating processes
Inside industrial ovens, water evaporation is not always complete, particularly on components with:
- Deep cavities or hollows
- Intricate geometries
- Areas shielded from the thermal flow.
Residual water can lead to:
- Surface imperfections
- Poor coating adhesion
- Need for manual rework.
Traditionally, this issue is addressed through manual intervention, but this significantly increases production times and costs.
Automation with Lesta extraction and blowing solutions
Lesta has developed a robotic solution: a suction and blowing gun compatible with the Lesta LEBOT MV A6 robotic arm, designed to:
- Extract residual water
- Blowing critical areas
- Repeat programmed movements with precision.
The robot records the movements – suction, and blowing actions – allowing the production cycle to be replicated automatically.
Watch here how it works.
What are the benefits of automation?
The integration of automated suction and blowing system offers several advantages:
Enhanced coating quality
The complete elimination of moisture prevents surface defects, ensuring a uniform and durable finish.
Reduced costs and lead times
Automation minimises manual intervention and rework, significantly boosting production efficiency.
Repeatability and production continuity
Programs can be created in advance and recalled instantly, eliminating gaps between batches.
Elimination of water traps without component modification
The system removes residual water without the need to redesign parts or add extra drainage holes, preserving the structural integrity of the components while saving time and money.
Energy savings
By targeting and removing residual water mechanically, the demand for high oven temperatures is reduced, providing benefits in:
- Energy consumption
- Thermal stress on components
- Process sustainability.
Industrial applications
Suction and blowing solutions are ideal for:
- Metal parts manufacturers
- Industrial metal coating systems
- Production lines incorporating pretreatment systems
- Facilities using high-temperature ovens for parts drying.
Lesta innovation for industrial coating
Lesta designs robotic solutions to optimise every stage of the coating process. The suction and blowing gun, integrated with the Lesta LEBOT MV A6, enhances quality, efficiency, and safety – adapting seamlessly to various part geometries and automation requirements.
Implementing suction and blowing systems within metal coating operations enables you to:
- Eliminate residual water without the need for manual intervention
- Reduce energy consumption
- Guarantee superior coating quality and uniformity
- Fully automate the production cycle.
With Lesta technology, manufacturers can achieve more efficient, sustainable, and repeatable production. Contact us today to book a consultation.
