Introduction

Liquid Penetrant Testing (PT) is one of the most widely used Non-Destructive Testing (NDT) methods to detect surface-breaking defects in metals, ceramics, and non-porous materials. If you are looking for professional Liquid Penetrant Testing in Coimbatore, AQC Advanced Quality Centre provides expert training and inspection services following international standards.

In this blog, we will discuss how to perform Liquid Penetrant Testing, its applications, and why AQC Advanced Quality Centre is the best choice for LPT training and services in Coimbatore.

What is Liquid Penetrant Testing (LPT)?

Liquid Penetrant Testing (also called Dye Penetrant Inspection – DPI) is a non-destructive testing technique used to detect cracks, porosity, laps, seams, and other surface defects in materials. It is widely used in industries such as aerospace, automotive, oil & gas, power plants, and manufacturing.

Step-by-Step Process of Liquid Penetrant Testing

LPT follows a systematic 6-step process to ensure accuracy in defect detection.

1. Pre-Cleaning the Surface

• The test surface is thoroughly cleaned using solvents, detergents, or ultrasonic cleaning to remove oil, dirt, paint, rust, or grease.
• Proper cleaning ensures accurate penetration of the dye into defects.

2. Applying the Penetrant

• A highly visible penetrant dye (red or fluorescent) is applied to the surface.
• The penetrant is left on the material for dwell time (5-30 minutes) to allow penetration into surface cracks and defects.

3. Excess Penetrant Removal

• After the dwell time, excess penetrant is removed using water, emulsifiers, or solvents, depending on the penetrant type (water-washable, post-emulsifiable, or solvent-removable).

4. Applying the Developer

• A developer (dry powder, water-soluble, or solvent-based) is applied to the surface to draw the trapped penetrant out of defects.
• The developer enhances visibility, making flaws easily detectable.

5. Inspection & Evaluation

• The inspector examines the part under visible light or UV light (for fluorescent penetrants) to detect defects.
• The results are recorded, and necessary actions are taken based on defect severity.

6. Post-Cleaning

• After the inspection, the tested surface is cleaned to remove any remaining developer or penetrant.
• This step ensures the part is free from contaminants before returning to service.

AQC Advanced Quality Centre for Liquid Penetrant Testing in Coimbatore

At AQC Advanced Quality Centre, we offer both LPT training and inspection services using advanced equipment and certified procedures.

✔ Benefits of Choosing AQC Advanced Quality Centre:

• Certified Instructors: Our experts provide hands-on training with real-world applications.
• International Standards Compliance: We follow ASNT, ASTM, and ISO guidelines for accurate testing.
• Advanced Testing Equipment: Get trained with the latest penetrant testing technology.
• Affordable Fees & Flexible Batches: We offer cost-effective courses and training schedules.
• Job-Oriented Training: Suitable for engineering students, quality inspectors, and NDT professionals.

Applications of Liquid Penetrant Testing

Liquid Penetrant Testing is used across multiple industries for quality control and safety assurance.

• Aerospace: Detecting cracks in aircraft components
• Oil & Gas: Inspecting pipelines and pressure vessels
• Automotive: Checking engine parts and castings
• Power Plants: Testing turbine blades and welded joints
• Railways: Ensuring safety in railway tracks and components
• Manufacturing: Checking metal castings and machined parts

FOR MORE INFORMATION AND TRAINING:

• Contact ADVANCED QUALITY CENTRE (AQC)
• Mail ID : [email protected]
• Contact: 8668082413
• Visit as : https://aqcinspection.com/
• Address: 100 ft road, Gandhipuram, Coimbatore.

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