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Wenzhou Suote - Professional Pharmaceutical, Chemical And beverage Processing Equipment Manufacturer Since 1998.

Spraying Knowledge for Stainless Steel Tank Equipment

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Spraying Knowledge for Stainless Steel Tank Equipment

Why Spray Stainless Steel Equipment?

Spraying is crucial for stainless steel equipment to:

  • Resist corrosion in harsh environments
  • Enhance wear resistance
  • Improve chemical stability
  • Maintain aesthetic appearance

Spray Coating Methods

  1. Air Spraying:
    • Uses compressed air to atomize paint, suitable for general coating.
    • Commonly used for manual operations and small-scale projects.
  2. Airless Spraying:
    • Employs high pressure (100–300 bar) to atomize paint without air.
    • Offers higher efficiency and thicker coatings, ideal for large surfaces.
  3. Electrostatic Spraying:
    • Charges paint particles for better adhesion using 60kV+ voltage.
    • Reduces overspray and improves coating uniformity.
  4. Specialized Spraying Techniques:
    • Arc Spraying: Melts wire materials with an electric arc for metal coatings.
    • Flame Spraying: Uses combustion flames to spray molten materials.
    • Plasma Spraying: Utilizes high-temperature plasma for ceramic/metal coatings.
    • Explosion Spraying: Produces dense, high-adhesion coatings via controlled explosions.

Spraying Process and Equipment

  • Key Steps:
    1. Surface preparation (cleaning, sandblasting)
    2. Primer application
    3. Main coating spraying
    4. Curing/drying
  • Essential Equipment:
    • Spray guns
    • Paint booths (dust-free workshops)
    • Paint supply systems
    • Curing ovens
    • Exhaust and waste treatment systems

Efficiency and Environmental Considerations

  • Productivity Advantages:
    • High-speed application suitable for both manual and automated production.
    • Upper paint rate increased from 30–40% (air spraying) to 65–85% with low-pressure atomization.
  • Environmental Challenges:
    • Paint mist and solvent vapors pose health and pollution risks.
    • Requires proper ventilation and waste treatment systems.

Application Scenarios

  • Industries:
    • Chemical, pharmaceutical, food and beverage, marine, and aerospace.
  • Equipment Types:
    • Reactors, storage tanks, filters, pipelines, and valves.

Safety Precautions

  • Use explosion-proof equipment in flammable environments.
  • Maintain safe distances (≥250mm) in electrostatic spraying to avoid spark discharge.
  • Implement strict safety protocols in high-pressure airless spraying.

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