1、 The process of cold drawn steel?

1. First, apply tensile stress to a steel bar for cold drawing, and the steel bar will deform. Then, as the tensile stress increases, the internal tensile stress borne by the steel bars will gradually increase. When the tensile stress generated inside the steel bar exceeds the yield point A of the steel bar and then reaches C, cold drawing is stopped and the load is removed. At this point, the steel bars have already undergone plastic deformation, and during the unloading process, the stress will change. The straight line O1C is slower than the straight line OA.

2. Afterwards, the tensile stress is reapplied and the steel bars are stretched to failure. A new change in stress will occur, with the new yield point near point C and significantly higher than the original yield point A. This change indicates that the plasticity of the steel bar has changed. As the plasticity decreases, its hardness increases, and the strength of the steel bar increases. This phenomenon is called "deformation hardening".

2、 What are the advantages of cold drawn steel?

1. Shape specifications and diversity

Cold drawn steel with different cross-sectional shapes and specifications can be produced by designing molds of different shapes. Angles can be designed as right angles or rounded corners.

The process of cold drawn steel

2. High precision

Cold drawn steel uses high-quality hard alloy molds and has highly professional mold repair personnel, so cold drawn steel ensures accurate and uniform tolerances.

3. Smooth surface

Cold drawn steel is made by advanced cold extrusion technology, which makes the surface of cold drawn steel products very smooth and bright.

4. Save materials

Cold drawing process is the process of cold extrusion deformation of raw materials to achieve the required shape, specifications, and tolerances. Therefore, the consumption of raw materials will be minimal. Compared to the materials consumed by traditional lathe machining for cutting, the material saved by cold drawn steel is very considerable. Especially when the amount of materials used is large, the cost savings of materials will be more significant.