Why Do Plastic Ducts Break?

Plastic drag chains, resembling tank tracks, are composed of numerous interconnected units that rotate freely between links.

The inner height, outer height, and pitch of the same series of chain guides are identical, while the inner width and bending radius R can be selected from various options.

The unit link is composed of left and right chain plates, as well as top and bottom covers. Each section of the drag chain can be opened, making assembly and disassembly easy, and there is no need for wiring.

After lifting the cover, cables, oil pipes, gas pipes, water pipes, and more can be placed into the conduit. Separation plates are also available to divide the space inside the conduit as needed.

Why do plastic conveyor chains break? Let's find out together.

One: The plastic conduit material has experienced crystalline fracture.

Transgranular fracture refers to the phenomenon of internal grain破裂 within the crystal structure, also known as intragranular fracture. Transgranular fracture is a cleavage fracture caused by tensile stress.

Dislocation fracture refers to the fracture along a specific crystal plane. The source of the cleavage cracks always originates at the grain boundary, but can also start at twin boundaries or second-phase interfaces.

Reasons for the occurrence of cross-sections in plastic conduit hanger also include delamination fractures.

Cracking occurs along specific crystallographic planes due to tensile stress, leading to intergranular brittle fracture, but can also sometimes separate along slip planes or twin boundaries.

Plastic conduit suffered brittle fracture.

F brittle fracture refers to the phenomenon of material failure without significant plastic deformation. In other words, the deformation before the fracture is minimal.

There is no significant macroscopic deformation detectable, and the material absorbs very little energy during the fracturing process. Generally, it is a low-energy fracture occurring below the allowable stress conditions.

This type of fracture includes the chain grain boundary brittle fracture, which occurs along the grain boundaries due to the reduced bonding strength caused by the presence of grain boundary impurities and precipitates.

Intergranular fractures, especially cleavage fractures occurring on the cleavage planes.

Four: Plastic Chain Conveyors Experience Tensile Fracture

Significant plastic deformation occurs before the tensile fracture, absorbing a considerable amount of energy during the fracture process, typically under high-energy fracture conditions above the material's yield stress.