Torsion Testing Tester

The Universal Torsion Testing Machine is a precision instrument designed to measure torque and evaluate the mechanical properties of materials and components under torsional loads. It is capable of testing a wide range of specimens, including springs, wires, tubes, bars, and chains. The machine supports both unidirectional and bidirectional torsion, making it suitable for diverse applications in quality control, research, and production environments.

Application

(1) Measuring torsional strength and ductility of wires, bars, tubes, springs, and other components.

(2) Evaluating torsional fatigue and performance under repeated twisting cycles.

(3) Quality control of metallic materials in manufacturing and production lines.

(4) Research and development of new materials requiring torsional property assessment.

(5) Testing left-hand and right-hand torsion for engineering components.

(6) Laboratory testing for educational and scientific research purposes.

Standards

(1) GB/T 239.1-2012 – Metal Materials Wire Part I: Unidirectional Torsion Test Method.

(2) GB/T 239.2-2012 – Metal Materials Wire Part II: Bidirectional Torsion Test Method.

(3) ISO 7800:2003 – Test Method for Unidirectional Torsion of Metal Wires.

(4) ISO 9649:1990 – Test Method for Bidirectional Torsion of Metal Wires.

(5) ASTM, JIS, and DIN standards related to torsion testing of metallic materials.

Features

(1) Evaluates torsional ductility and maximum torsional strength.

(2) Supports both unidirectional and bidirectional torsion tests.

(3) Reveals material defects and inconsistencies under torsional stress.

(4) Compliant with multiple national and international standards.

(5) Provides controlled and repeatable testing parameters, including twisting speed and sample length.

(6) Suitable for a wide variety of materials, including wires, bars, tubes, springs, and chains.

(7) Versatile testing capabilities for torsion, breakage, and fatigue analysis.

Parameters

Parameter	Specification
Clamping wire diameter range	3.0–5.0 mm
Distance between fixtures	500 mm
Twisting speed	30–60 r/min
Power supply	AC 220V, 50Hz
Noise level	<70 dB(A)

Accessories

(1) Main torsion testing machine

(2) Sample clamps for different diameters

(3) Adjustable fixture supports

(4) Power cable and user manual

Test Procedures

(1) Secure the specimen between the two clamps.

(2) Set the torsion mode: unidirectional or bidirectional.

(3) Adjust the twisting speed and number of rotations as required.

(4) Start the test; for unidirectional torsion, the sample rotates 360° in one direction until the specified cycles or failure.

(5) For bidirectional torsion, the sample rotates 360° in one direction, then reverses for the same number of cycles until failure.

(6) Record torsion angle, torque, and failure data for analysis.

Maintenance Information

(1) Inspect clamps, fixtures, and moving parts regularly for wear or misalignment.

(2) Keep the machine clean and free from dust and debris.

(3) Check electrical connections and power supply stability.

(4) Lubricate rotating and moving components periodically as per manufacturer guidelines.

(5) Ensure calibration is maintained for accurate torque and angle measurements.

(6) Handle specimens and fixtures carefully to prevent damage to the machine or samples.

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