Pre-Coating Surface Preparation
- By Usman Naseer
- 0
Course Description
“If you have 10 minutes to paint a fence, spend 8 minutes preparing the surface and 2 minutes painting.” Key fact: Over 80% of premature coating failures are due to inadequate surface preparation, not the coating material itself. For lubrication (e.g., solid film lubricants on gears/bearings), poor preparation leads to delamination and metal-to-metal contact.
What you'll learn in this course?
Explain why surface preparation accounts for 80% of coating/lubrication system performance.
Identify and classify common surface contaminants (oil, mill scale, rust, old coatings).
Select appropriate surface preparation methods (solvent cleaning, abrasive blasting, water jetting, acid pickling) based on substrate material and service environment.
Interpret surface cleanliness standards (ISO 8501, NACE/SSPC, Sa 2.5 vs Sa 3).
Measure surface profile (roughness) and assess its effect on coating adhesion and lubrication retention.
Apply quality control checks (solvent wipe, chloride test, dust rating) before coating application.
Course Curriculum
- Introduction: The Golden Rule of Coating
- Why “Clean” is Not Enough (Chemical vs Physical Cleanliness)
- Financial Impact of Poor Surface Preparation
- Common Surface Contaminants: Identification
- Surface Defects from Inadequate Prep: Case in One Sentence
- Introduction to Preparation Standards (ISO vs NACE/SSPC)
- Module 1 Summary & Transition
- Mechanical Preparation Overview
- Abrasive Blasting: Core Principle
- Blast Cleaning Grades (ISO 8501-1)
- Abrasive Media Selection & Embedded Contaminants
- Power Tool Cleaning (St and SSPC-SP 11/15)
- Wet Abrasive Blasting (UHP Water Jetting)
- Chemical Preparation (Solvent Cleaning)
- Acid Pickling (Chemical Descaling)
- Alkaline & Emulsion Cleaning (for Lubrication Prep)
- Surface Profile (Roughness) – Definition
- Optimal Profile for Common Coatings
- Measuring Surface Profile: Methods
- Surface Energy & Wettability
- Flash Rust: Cause and Control
- Soluble Salt Testing (Chlorides & Sulfates)
- Dust Rating (ISO 8502-3)
- Environmental Conditions for Surface Prep
- Pre-Coating Surface Prep for Thermal Spray (TSC)
- Surface Prep for Lubrication Systems: Bearing Surfaces
- Conversion Coatings as Post-Prep Step
- Quality Control Checks Before Coating (Checklist)
- Case Study 1: Pipeline Coating Failure (Middle East)
- Case Study 2: Wind Turbine Gearbox Bearing Seizure
- Common Mistakes & How to Avoid Them
- Role of Compressed Air Quality
- Surface Preparation for Composite & FRP Substrates
- Documentation & Traceability
- Health & Safety During Surface Prep
- Overview of Key ISO & NACE Standards (Reference)
- Decision Matrix: Which Prep Method to Choose?
- Time Limits Between Prep & Coating (Open Time)
- Summary of Critical Success Factors (One-liners)
- Course Summary
- Assessment (20 MCQs)
- Pre-Coating Surface Preparation
Usman Naseer
3 
Course includes:
Levelintermediate
Duration180 minutes
Lessons42
Quizzes0
CertificationsYes
Enrolled0