1. Cold drawn wire
Cold drawn wire is used in building materials more frequently, and the testing standards for cold drawn wire are also different. The strength of cold drawn wire is high and it can be used in many ways. The most used is prestressed tendons. Where plasticity is not required, but strength is only required, such steel can be used. Cold drawn wire is a kind of metal cold working. The raw material is wire rod, which is what we often call steel. Products produced through a series of processes such as shelling. It is a common wire. Ordinary round steel, if it is forced through a hole smaller than its diameter, the diameter of the round steel will become smaller and the length will be elongated. Repeating this process will make the round steel further smaller. . After this plastic deformation, the hardness of the steel will increase, and the plasticity will basically disappear.
2. Annealed wire
Annealed wire has good elasticity and flexibility, and its softness and hardness can be controlled during the annealing process. It is mainly used in the construction industry as binding wire and binding wire. It is softer and more flexible than ordinary black iron wire, with uniform softness and uniform color. Annealed wire is a kind of soft iron wire product made of low-carbon steel cold drawing, heating, constant temperature, heat preservation and other processes. Iron wire has different compositions according to different uses. It contains iron, cobalt, nickel, copper, carbon, zinc, and other elements. Roll the hot metal billet into a 6.5mm thick steel rod, which is a wire rod, and then put it into the wire drawing device to draw wires of different diameters, and gradually reduce the diameter of the wire drawing reel, and perform processing such as cooling, annealing, coating, etc. Craftsmanship makes various kinds of iron wires of different specifications.
