Steel wire and wire rope manufacturers need to show users the quality, safety and performance of their products. The main performance indexes (such as fracture strength, durability, fracture strain, modulus, etc.) of the product can be determined by test. By quantifying these physical performance indicators, engineers and developers can make correct decisions on the application of their products, raw materials and processes used in production.

Wire rope tension

Unlike steel wire, steel wire rope is usually made up of several wires twisted together. In tension mode, it is difficult to clamp the sample of wire rope due to loosening force and fracture strength. If improper fixture and clamp surface are used, the stress concentrated on the edge of the clamp surface can lead to the failure of the sample test. It is difficult to attach any object to the sample because of the helical characteristics of the wire rope in the test. Wire rope failure often leads to high-energy fracture, at this time, if appropriate safety measures are not taken, it will be very dangerous.

Solution

The system has large load, fixture, strain measurement and safety performance. Electronic universal material test system and hydraulic universal material test system can be used to test the steel wire rope. V-shaped design can be used to clamp the steel wire rope to maximize the contact area of the fixture. This "V" type design can be made by using a tooth-shaped table or a particularly robust table to prevent the sample from sliding from these pinches before starting the test. Special fixture to meet the practical application needs. These applications include multi-strand wire rope fixture, metal mesh fixture and so on.

Steel wire drawing

The main problem with many steel wires is that they are too thin and hard to clamp. If there is no suitable clamp, the stress on the edge of the clamp surface will lead to premature failure or fracture of the clamp surface.

Solution

By reducing or preventing the stress at the clamping edge, the pneumatic fixture can achieve the maximum stress most effectively.