Electrostatic Painting Course

Lesson 1 • Core Terminology and Standards

Defines essential vocabulary including kV, microamperes, atomisation, and transfer efficiency. Aligns learner language with industry and regulatory documentation.

Lesson 2 • Overview of the Coating Process

Maps the full workflow from substrate preparation through curing. Gives learners a mental model that anchors every skill introduced in later chapters.

Lesson 3 • Physics of Electrostatic Attraction

Covers charge generation, electric fields, and Faraday cage effects as they relate to coating. Establishes the scientific basis for all subsequent equipment and technique topics.

Lesson 1 • System Assembly and Pre-Operation Checks

Guides learners through a structured assembly sequence and pre-start checklist. Reinforces that correct setup prevents equipment damage and coating defects.

Lesson 2 • Grounding Systems and Workpiece Hanging

Details proper grounding of conveyors, hooks, and workpieces to complete the electrostatic circuit. Poor grounding is the leading cause of transfer efficiency loss.

Lesson 3 • Fluid Delivery and Pumping Systems

Covers pressure pots, diaphragm pumps, and circulation systems used to supply paint to the gun. Ensures learners can match fluid delivery hardware to coating requirements.

Lesson 4 • Power Supply and Control Units

Explains high-voltage power supply operation, cascade circuits, and control panel functions. Connects electrical knowledge to safe and precise voltage adjustment.

Lesson 1 • Spill Response and Waste Disposal

Covers containment, neutralisation, and disposal of solvent-borne and waterborne coating materials. Ensures regulatory compliance and environmental responsibility.

Lesson 2 • Fire and Explosion Risk Management

Addresses flammable solvent vapours, ignition sources, and lower explosive limit monitoring. Directly applies to booth design and operational discipline covered later.

Lesson 3 • Personal Protective Equipment Selection

Specifies PPE categories for respiratory, skin, and eye protection matched to coating materials. Teaches selection logic rather than a single fixed kit.

Lesson 4 • Electrical Hazards and Shock Prevention

Identifies high-voltage shock risks unique to electrostatic equipment and the controls that mitigate them. Grounds all subsequent safety topics in electrical awareness.

Lesson 1 • Powder Coatings for Electrostatic Application

Distinguishes thermoplastic and thermoset powder types and their electrostatic charging behaviour. Prepares learners for the powder-specific techniques introduced in later chapters.

Lesson 2 • Viscosity Measurement and Adjustment

Covers viscosity cups, rotational viscometers, and temperature effects on flow. Correct viscosity is critical for atomisation quality and film build consistency.

Lesson 3 • Resistivity and Conductivity Requirements

Explains how coating resistivity affects charge retention and transfer efficiency. Learners measure and adjust resistivity to fall within the optimal electrostatic range.

Lesson 4 • Substrate Compatibility and Adhesion

Matches coating systems to metal, plastic, wood, and composite substrates based on adhesion mechanisms. Prevents coating failures caused by incompatible material pairings.

Lesson 1 • Contamination Identification and Assessment

Teaches recognition of oils, mill scale, rust, and salts that compromise adhesion. Accurate assessment drives the correct preparation method selection.

Lesson 2 • Preparation Quality Inspection

Applies standardised inspection tools and criteria to verify surface readiness before coating. Connects preparation quality directly to final coating performance outcomes.

Lesson 3 • Masking and Workpiece Staging

Explains tape, plug, and liquid masking techniques to protect areas from coating. Proper staging also ensures grounding contact is maintained during spraying.

Lesson 4 • Abrasive Blasting and Mechanical Preparation

Details blast media selection, profile depth, and cleanliness grades for abrasive blasting. Mechanical preparation is essential for heavy corrosion and structural steel.

Lesson 1 • Coating Complex Shapes and Recessed Areas

Applies wrap-around effect knowledge to coat inside corners, tubes, and Faraday cage zones. Learners use technique adjustments to overcome charge shielding on difficult geometries.

Lesson 2 • Spray Pattern Adjustment and Atomisation

Covers fan width, fluid flow, and atomising air adjustments to achieve correct droplet size and pattern shape. Atomisation quality directly determines film smoothness.

Lesson 3 • Gun Handling and Body Mechanics

Establishes correct grip, stance, wrist motion, and trigger discipline for consistent spray patterns. Proper body mechanics reduce fatigue and coating variation over long shifts.

Lesson 4 • Multi-Coat Application and Flash-Off Timing

Guides learners through primer, basecoat, and topcoat sequencing with correct flash-off intervals. Improper timing causes solvent entrapment, adhesion loss, and film defects.

Lesson 1 • Cure Oven Types and Temperature Profiles

Compares convection, infrared, and combination ovens and explains how to set cure schedules. Correct metal temperature and dwell time are essential for full crosslink density.

Lesson 2 • Corona Charging Gun Operation

Explains corona electrode function, kV settings, and ion cloud management for powder charging. Corona guns are the most common powder application tool in production environments.

Lesson 3 • Tribo Charging Gun Operation

Covers friction-charging principles, PTFE barrel wear, and applications where tribo guns outperform corona. Learners select the correct gun type based on part geometry and powder chemistry.

Lesson 4 • Powder Booth and Delivery System Setup

Details fluidised bed hoppers, powder pumps, and booth airflow for efficient powder delivery and reclaim. Correct setup minimises powder waste and cross-contamination between colours.

Lesson 1 • Continuous Improvement and Benchmarking

Introduces PDCA cycles, transfer efficiency benchmarks, and waste reduction targets for ongoing improvement. Learners set measurable goals and track progress against industry standards.

Lesson 2 • Corrective Action and Process Adjustment

Maps each defect type to specific parameter changes in voltage, viscosity, speed, or preparation. Learners practise structured problem-solving using cause-and-effect analysis.

Lesson 3 • Statistical Process Control Basics

Applies control charts and capability indices to monitor film thickness and transfer efficiency over time. SPC converts reactive defect fixing into proactive process management.

Lesson 4 • Common Defect Identification and Root Causes

Catalogues orange peel, fisheye, sagging, back-ionisation craters, and pinholes with their root causes. Defect recognition is the prerequisite for effective corrective action.