1、 What is cold drawn steel?

Cold drawn steel, also known as cold drawn steel, is a metal material made from metal materials such as round steel and processed through cold working processes such as drawing or extrusion at room temperature. Compared to common hot working processes such as hot rolling and forging, cold working has a lower processing temperature and larger processing deformation. Therefore, cold drawn steel has superior properties such as higher mechanical strength, better surface smoothness, and finer grain structure.

[Difference]

2、 What is the difference between cold drawn steel and ordinary round steel?

1. Different cold processing techniques

The main difference between cold drawn steel and ordinary round steel lies in the different processes. Cold drawn steel is the process of drawing steel ingots into the required diameter through cold processing, while ordinary round steel is processed through processes such as hot rolling or forging, with high processing temperatures, coarse grain structure, and relatively weak mechanical properties.

2. Different mechanical properties

During the stretching process of cold drawn steel, due to the action of tensile force, the internal grains of the metal undergo plastic deformation, resulting in finer and longer grains, and the formation of more grain boundaries. This leads to better mechanical properties, greater strength, and better ductility of cold drawn steel compared to ordinary round steel.

3. Different surface smoothness

Cold drawn steel has a high surface finish because during the stretching process, the friction between the steel surface and the mold surface is high. Therefore, the surface roughness is optimized to make it smooth and smooth, with a shiny appearance. However, the surface smoothness of ordinary round steel is not as good as that of cold drawn steel because its surface has not undergone similar processes such as friction and stretching.

3、 Summary

In summary, cold drawn steel and ordinary round steel have significant differences in manufacturing processes, mechanical properties, surface smoothness, and other aspects. Round steel with a shiny appearance is usually processed by cold drawing, thus having better mechanical properties and surface smoothness.