Your Guid Book
FAQS
Chipping
Cause:
– Insufficient coating thickness, poor adhesion, mechanical impacts or stress on coated parts.
Solution:
– Adequate Film Thickness: Ensure the coating is applied to the specified thickness.
– Proper Adhesion: Improve adhesion through proper surface preparation.
– Durable Formulations: Use powder formulations designed for high durability.
Poor Abrasion Resistance
Cause:
– Use of non-durable powder coatings, inadequate curing or film thickness.
Solution:
– Select Durable Powders: Choose powders with high abrasion resistance.
– Verify Curing Process: Ensure proper curing to achieve maximum hardness and durability.
Poor Flow
Cause:
– Incorrect application techniques, equipment settings, inconsistent powder formulations.
Solution:
– Optimize Techniques: Adjust application techniques and equipment settings.
– High-Quality Powders: Use consistent, high-quality powder formulations.
Fluidization Problems
Cause:
– Poor powder quality, environmental conditions, equipment malfunctions.
Solution:
– Ensure Powder Quality: Use high-quality powder and control environmental conditions.
– Maintain Equipment: Regularly maintain and calibrate equipment for optimal performance.
Plugged Hoses
Cause:
– Contamination or moisture in the powder or air supply, improper equipment maintenance.
Solution:
– Clean Air Supply: Ensure air supply is clean and dry.
– Regular Cleaning: Clean and maintain equipment to prevent blockages.
Poor Recoatability
Cause:
– Incompatibility between layers, improper surface preparation.
Solution:
– Ensure Compatibility: Use powder coatings that are compatible for multiple layers.
– Proper Preparation: Prepare surfaces adequately before recoating.
Spitting or Surging
Cause:
– Inconsistent powder feed or air pressure, equipment issues.
Solution:
– Adjust Settings: Optimize powder feed and air pressure settings.
– Equipment Maintenance: Regularly inspect and maintain equipment to prevent issues.
Metallic Appearance Issues
Cause:
– Inconsistent application or curing conditions, variations in powder formulations.
Solution:
– Standardize Techniques: Use consistent application techniques and curing conditions.
– Use Quality Formulations: Select high-quality, consistent metallic powder formulations.
Penetration Issues
Cause:
– Poor electrostatic attraction, airflow, inadequate equipment settings.
Solution:
– Optimize Electrostatics: Adjust electrostatic settings and airflow for better penetration.
– Equipment Adjustments: Ensure equipment settings are correct for the application.
Uneven Film Thickness
Cause:
– Inconsistent application techniques, equipment issues, variations in powder delivery rates.
Solution:
– Standardize Techniques: Maintain consistent application techniques and monitor equipment.
– Adjust Delivery Rates: Ensure powder delivery rates are consistent for uniform coverage.
Back Ionization
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Poor Adhesion
Cause:
– Insufficient surface preparation or contamination, incorrect curing temperatures or times, improper pre-treatment.
Solution:
– Thorough Cleaning: Ensure the substrate is properly cleaned and pretreated.
– Verify Curing: Confirm that the curing process is appropriate for the powder used.
– Surface Preparation: Use proper pretreatment methods such as phosphating or sandblasting to enhance adhesion.
Poor Corrosion Resistance
Cause:
– Inadequate surface preparation, use of non-corrosion-resistant powders.
Solution:
– Use Corrosion-Resistant Powders: Select powders designed for corrosion resistance.
– Improve Pretreatment: Enhance the pretreatment process, including the use of conversion coatings to protect the substrate.
Color Change (Yellowing)
Cause:
– Overbaking, exposure to high temperatures, UV exposure.
Solution:
– Monitor Curing: Carefully control curing times and temperatures to avoid overbaking.
– UV-Stable Coatings: Use powders that are stable under UV exposure for outdoor applications.
Orange Peel Effect
Cause:
– Incorrect gun settings, high film thickness, variations in curing conditions, substrate issues.
Solution:
– Adjust Spray Gun Settings: Optimize settings to ensure even application.
– Uniform Film Thickness: Maintain consistent film thickness across the surface.
– Standardize Curing Conditions: Ensure uniform curing conditions to prevent variations.
Cratering
Cause:
– Contamination on the substrate or in the powder, incompatible powder formulations.
Solution:
– Clean Environment: Ensure a contaminant-free environment and clean substrate.
– Compatible Formulations: Use powder formulations that are compatible and enhance flow properties.
Pinholes
Cause:
– Trapped air or moisture in the substrate or powder, rapid curing processes.
Solution:
– Preheat Parts: Preheat to release trapped air or moisture before coating.
– Adjust Curing Schedules: Allow proper outgassing during the curing process.
Charging Issues
Cause:
– Faulty equipment, poor grounding, incorrect powder delivery rates.
Solution:
– Regular Maintenance: Maintain and test equipment regularly.
– Adjust Delivery Rates: Ensure efficient charging and deposition by adjusting powder delivery rates.
Color Differences
Cause:
– Variations in powder batches, application techniques.
Solution:
– Consistent Batches: Use powder from the same batch to ensure color consistency.
– Standardized Procedures: Implement standardized application procedures to maintain uniformity.
Gloss Issues
Cause:
– Variations in film thickness or curing conditions, substrate irregularities.
Solution:
– Standardize Application: Ensure uniform film thickness and curing conditions.
– Inspect Substrates: Prepare substrates to ensure they are clean and uniform.
For any additional
technical support, please contact our R&D expert team. Share the details of your technical issue, and we’ll get back to you promptly with a solution.Â
