What Does Cold Rolling (CR) Mean?
Cold rolling is a technique where a metal strip or sheet is passed between two rollers and then squeezed and compressed. The level of strain present determines the properties and hardness of the finished material.
This process is widely used for surface finish and high-quality dimensional accuracy, which can help prevent material damage and corrosion.
Corrosionpedia Explains Cold Rolling (CR)
Cold rolling can increase a metal's hardness and strength by as high as 20%. This technique also enhances the surface finish of metals and promotes higher tolerances.
Typically, cold-rolled materials are compressed during the process. Due to their smaller dimensions, they have higher strength compared to products that have been cluster milled or hot rolled.
Strips that are cold rolled are available in conditions such as full hard, skin rolled and quarter hard. The typical applications of cold rolling are in the production of:
- Filing cabinets
- Metal furniture
- Computer cabinets
- Water heaters
- Exhaust pipes
- Steel drums
Through cold rolling of steel, the strength and hardness of the material is enhanced significantly, which in turn improves the corrosion resistance of metal in many ways. This is brought about by the addition of more tension and energy to the product.