Cylindrical Mandrels

The NK by NEURTEK cylindrical mandrel allows bending tests to measure the flexibility and adhesion of coatings on metal sheets, in compliance with international standards.

What is the NK by NEURTEK cylindrical mandrel?

The cylindrical mandrel is an essential tool for carrying out bending tests on paints and coatings applied to metal sheets. It allows the flexibility and adhesion of the coating to be verified by progressively bending the sample over mandrels of different diameters, providing precise and reliable results.

What is the bending test used for?

This test is key to evaluating the quality of coatings and detecting potential failures before industrial application. It helps to identify:

• Cracks in the coating.
• Adhesion failures to the substrate.
• Loss of elasticity of the material.
• Elongation problems in the paint film.

It is ideal for quality control laboratories, technical validation processes, and industrial research.

How does the cylindrical mandrel work?

The procedure is simple and efficient:

• Place the sample in the equipment clamp.
• Manually bend the sample around mandrels with decreasing diameters.
• Continue until the first cracks appear in the coating.
• The diameter at which cracks form indicates the material’s flexibility limit.

This method provides fast and reliable results that are easy to document and compare between different batches or coatings.

Technical standards and certifications

The equipment complies with international bending test standards:

• Cylindrical mandrel: UNE ISO 1519:2003.
• Conical mandrel: UNE EN ISO 6860, ASTM D 522-93a.

Calibration certificate: Cylindrical mandrel with traceability SER-CT030.

Complete kit includes:

• Robust test unit with bending lever.
• 12 stainless steel mandrels (2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25 and 32 mm).
• Sliding clamp to secure the sample.
• Carrying case and manual in Spanish.
• Supports test panels up to 75 mm wide.

Benefits of the NK by NEURTEK cylindrical mandrel

• Precision and reliability: Complies with ISO and ASTM standards, ensuring reproducible results.
• Easy handling: Ergonomic design and manual lever that facilitates the test.
• Versatility: Allows testing with different mandrel diameters to evaluate multiple levels of flexibility.
• Durability: Robust stainless steel construction, ideal for frequent use in industrial environments.

Frequently Asked Questions (FAQ)

How does this NK by NEURTEK mandrel compare to others on the market?

It offers digital precision, traceable calibration, and 12 stainless steel mandrels, standing out from basic models that do not meet ISO or ASTM standards.

What standards does this equipment comply with?

It complies with UNE ISO 1519:2003, UNE EN ISO 6860 and ASTM D 522-93a, ensuring internationally recognized results.

Is it suitable for frequent use in industrial production?

Yes, its robust design and ergonomic lever allow for repetitive testing without fatigue, making it ideal for industrial environments and intensive laboratories.

What is the difference between a cylindrical mandrel and a conical mandrel?

• Cylindrical mandrel: Ideal for assessing the flexibility and adhesion of coatings in standard bending tests, with uniform diameters that allow the exact deformation limit to be determined. Perfect for quality control laboratories and material studies where precise diameters are required.
• Conical mandrel: Its diameter changes progressively along the axis, allowing the coating failure point to be identified gradually in a single test, making it easier to detect cracks and deformations. It is useful for quick tests or material comparisons where a continuous flexibility range is desired.