Cold drawn steel process and advantages

Cold drawn steel is usually in the environment of room temperature, so that the steel material into the already pre-prepared accurate mold samples. Through advanced cold extrusion high-end technology, the tensile stress of the yield point strength of the steel bar exceeds the original inherent tensile stress value of the yield point strength of the steel bar, and then force the steel bar to stretch in the corresponding shape. So that the steel bar has no plastic deformation, to achieve the yield point strength of the steel bar to continue to improve and save the purpose of the material. Below to understand, cold drawn just processing technology and advantages.

Advantages of cold drawn steel

Diversity of shapes and specifications

Through the design of different shapes of molds, cold-drawn cold-drawn steel with different cross-sectional shapes and different specifications of tolerance. The angle can be designed as right angle or round angle.

High Accuracy

The use of high-quality carbide molds as well as the possession of professional mold repairers ensures accurate and uniform tolerances.

Smooth surface

Advanced cold extrusion process makes the surface of cold drawn steel products smooth and bright.

Materials save a lot

Cold drawing process is the raw material cold extrusion deformation to achieve the required shape, specifications and tolerances, raw material loss is very small, relative to the use of traditional lathe machining cutting material loss, cold drawn steel material savings is very considerable, especially when the material dosage is large, the material cost savings are more significant. The savings in material costs are even more significant, especially when the amount of material used is large.

Processing time and processing machinery savings

Because of the accuracy and good surface condition, cold drawn steel products can be used directly, such as spraying, sanding, bending, drilling, but also according to the actual requirements of the fine drawing directly after plating, eliminating a lot of machining time and save the configuration of the cost of processing machinery.

Cold-drawn steel process:

First cold-drawn effect:

Take a steel bar on which the tensile stress is applied to the cold-drawn, the steel bar will be deformed (and make the stress- Strain diagram). As the tensile stress increases, the tensile stresses exerted inside the rebar gradually increase. When the tensile stress generated inside the bar exceeds the yield point A of the bar and reaches C, stop cold drawing, unloading. At this time, it can be seen that the steel bar has produced plastic deformation, in the unloading process, the stress - strain diagram has a change, the straight line O1C than the straight line OA to slow down.

2. The effect of the second cold drawing:

Re-apply the tensile stress, stretch the steel bar to destruction, the stress - strain diagram has a new change, the new yield point near point C, significantly higher than the original yield point A. This change shows that the steel bar's This change indicates that the plasticity of the steel bar has changed, plasticity is small, hardness is big, the strength of the steel bar has been improved, this phenomenon is called "deformation hardening".

Through the advanced cold extrusion high-end technology and precise and beautiful mold sample, the cold drawn steel can be transformed into a variety of steel materials and metal products, and these metal products also have high precision, smooth surface and a variety of forms of their own advantages. Cold-drawn steel products are widely used in life, mainly in mechanical equipment, electrical components, furniture, metal appliances and small hardware spare parts and so on. The above is a small introduction to the cold drawn steel process and advantages of the whole content, I hope to help you again.

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