Mechanical property test of steel wire and wire rope


Manufacturers of steel wire and wire rope shall show users the quality, safety and performance of their products. The main performance indexes of the product (such as breaking strength, durability, breaking strain, modulus, etc.) can be determined through tests. By quantifying these physical performance indicators, engineers and developers can make correct decisions on their product applications, raw materials and processes used in production.



detailed information


Manufacturers of steel wire and wire rope shall show users the quality, safety and performance of their products. The main performance indexes of the product (such as breaking strength, durability, breaking strain, modulus, etc.) can be determined through tests. By quantifying these physical performance indicators, engineers and developers can make correct decisions on their product applications, raw materials and processes used in production.


Wire rope stretching


Unlike steel wire, steel wire rope is usually composed of several steel wires twisted together. In the tensile mode, it is difficult to clamp the wire rope sample due to the loosening force and breaking strength. If improper clamps and clamping surfaces are used, the stress concentrated on the edge of the clamping surface may cause the test specimen to fail. It is difficult to attach any object to the sample due to the spiral characteristics of the wire rope in the test. The failure of steel wire rope often leads to high-energy fracture. At this time, it will be very dangerous if appropriate safety measures are not taken.


Solution


The system has large load, fixture, strain measurement and safety performance. The electronic universal material test system and the hydraulic universal material test system can be used to test the steel wire rope. The clamp adopts the "V" design to maximize the contact area of the clamp. This "V" type design can use a tooth shaped table or a particularly sturdy table to prevent the specimen from slipping from these grips before starting the test. Special fixtures to meet the needs of practical applications. These applications include multi strand wire rope clamps, metal mesh clamps, etc.



Steel wire stretching


The main problem with many wires is that they are hard to clamp because they are thin and hard. If there is no suitable clamp, the stress at the edge of the clamp face will lead to premature failure of the test or fracture of the clamp face.


Solution


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