Notching Machine (Charpy & Izod Sample Prep)

The Charpy and Izod Notching Machine is a critical sample preparation tool designed to cut precise V-shaped or U-shaped notches into plastic and composite specimens. By using a high-hardness adjustable blade, this device creates a standardized stress concentration point on the sample, ensuring that subsequent impact tests (conducted per ISO 179, ISO 180, and ASTM D256) yield reproducible and valid results.

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Description

Charpy and Izod Notching Machine: Precision Sample Preparation

In material testing, the accuracy of your data is only as good as the quality of your sample. This is especially true for Impact Testing (Charpy/Izod), where the depth and radius of the notch determine the breakage energy. The Notching Machine allows laboratory operators to cut precise V-notches and U-notches into plastic bars, creating the standard “point of weakness” required by international norms.

Why is a Dedicated Notcher Essential?

Trying to cut a notch by hand or with non-standard tools introduces micro-cracks and stress variations. This machine ensures:

Standardized Geometry: The specialized blade cuts the exact angle (usually 45°) and radius (0.25mm or 1.0mm) defined by the standard.
Reproducibility: Ensures that every single specimen breaks under the same conditions, making your quality control data reliable.
Adjustable Depth: A micrometer allows the operator to set the remaining width (ligament) of the sample with high precision.

Preparation for Environmental Testing

Samples prepared on this machine are often subjected to rigorous testing conditions, including extreme cold (down to -45°C). A perfect notch is vital when assessing the Brittle-Ductile Transition temperature of polymers. Any imperfection in the notch would cause premature failure during these sensitive thermal tests.

Alternative Preparation Methods

For laboratories requiring high-volume automation or dumbbell shape cutting in addition to notching, we also recommend considering our Laboratory CNC Milling Machine. While the Notching Machine is perfect for single notches, the CNC offers versatile shaping capabilities.

International Standards Compliance

This device prepares samples in strict accordance with:

ISO 179: Plastics — Determination of Charpy impact properties.
ISO 180: Plastics — Determination of Izod impact strength.
ASTM D256: Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics.

Consultation and Purchase

To acquire this essential sample preparation tool, please click the “Contact for Purchase” button to message our sales team via WhatsApp. You can also visit our Contact Us page for further assistance.