ZL-2112 Metal Wire Torsion Testing Machine

Scope of Application:

The Wire Torsion and Winding Testing Machine is a new type of testing equipment designed for torsion and winding tests on wires. The machine features a horizontal structure and consists of loading, transmission, winding, force application, and tracking systems. It is suitable for testing the torsion and winding performance of wires with nominal diameters ranging from Φ0.1 to Φ10 mm. The rotational speed is adjustable at 15, 20, 30, and 60 revolutions per minute (rpm). The machine is primarily used to evaluate the ability of wires to withstand plastic deformation during unidirectional, bidirectional torsion, or winding, as well as to reveal surface and internal defects in the wires.

Applicable Standards

GB/T 2976-2020: Metallic Materials – Wire – Winding Test Method

GB/T 239.1-2012: Metallic Materials – Wire – Part 1: Unidirectional Torsion Test Method

GB/T 239.2-2012: Metallic Materials – Wire – Part 2: Bidirectional Torsion Test Method

Main Technical Parameters:

Structure and Features: 

1.Main Unit:

The machine adopts a horizontal structure, with the main frame constructed to ensure overall rigidity.  

The mandrel is made of high-quality alloy structural steel, featuring a smooth surface and high stiffness to ensure durability.  

2.Drive System:  

Powered by an electric motor, the system provides high torque, uniform loading, and stable operation without impact.  

3.Transmission System:  

Equipped with a precision reducer to ensure uniform, stable, and high-accuracy transmission.  

Operation and Usage:  

(1) Torsion Test Operation Method:  

1. Rotate the knob on the control panel to the desired speed as needed.  
2. Setting the Distance:  

     Move the right handle to a position perpendicular to the sliding shaft.  

     Loosen the screws on the limit plate of the sliding rail.  

     Insert one end of the sample into the left clamp, ensuring the sample axis aligns with the clamp center (visually aligned).  

     Insert the other end into the right clamp and secure it using the same method.  

     After installing the sample, return the right handle to a position parallel to the sliding shaft.  

     Note: The tightening force applied by the weight should not exceed 2% of the nominal tensile strength of the wire. Select the appropriate weight and place it on the right weight tray. If the provided weights are insufficient, users may prepare additional weights as needed.  

3. Select the desired rotation direction and press the corresponding button to start the test. The test will automatically stop when the sample breaks.  

(2) Winding Test Operation Method:  

1. Select the appropriate mandrel based on the testing standard for the wire and install it on the clamp. Secure it with a V-shaped clamp, and support the other end with a center pin.  
2. Bend one end of the wire into a hook and insert it into the corresponding hole in the clamp. The wire is wound by rotating around the mandrel.  
3. Control the motor to rotate forward or reverse. Due to the low speed, the operator can manually count the number of turns. Stop the motor when the required number of turns is reached.  

    Note: Ensure the torsional force on the sample during winding is fully released before removing the sample.

Maintenance and Care  

1. The testing machine should be installed in a dry, clean, and vibration-free environment.  
2. Ensure the machine is properly grounded after installation.  
3. Lubrication:  

   Apply a small amount of #20 oil to the sliding rail of the clamp once per shift (move the clamp left and right to distribute the oil).  

   Clean and reapply #20 oil every three months to prevent rust, sludge buildup, and reduce axial resistance.