Cold rolled steel (GB/T6478-1986)
Cold rolled steel (also known as soft steel) is one of the most commonly used materials in modern engineering, particularly in the automotive and construction industries. This type of steel has become increasingly popular in recent years due to its versatility and excellent strength-to-weight ratio.
The process of cold rolling starts with the steel being heated above its recruitment temperature. Once it has been heated, it is then passed between a set of rolling cylinders. During this process, the steel is highly compressed, reducing its overall thickness and size. The tightening of the steel increases its tensile strength, allowing it to become more ductile overall.
After the initial rolling process, the steel is then given a cold heading or annealing. In a cold heading process, the steel is shaped by passing it through a die. This process causes tension to be applied onto the steel, strengthening it and giving it more ductility and better ductility fatigue life. In an annealing process, the steel is heated to a temperature above the recrystallization temperature of the metal and then slowly cooled in order to ensure uniform grain shape and size. This process improves the metals strength and prevents it from becoming brittle.
The steel that is produced through cold rolling is much stronger and more rigid than other materials, making it the ideal choice for many applications. It is also non-corrosive, meaning it is suitable for outdoor use or in areas where moisture is present. Moreover, it has excellent fatigue properties, meaning it can withstand long-term use in large structures.
Due to its versatility and desirable qualities, cold rolled steel is used in a wide range of applications, including in sheet metal fabrication, bridges, automobiles, and components in medical instruments and machines. The steel is also used in the construction of reinforcement bars, and it is often used to produce durable products with as minimum weight as possible.
Because of its strength and excellent properties, cold rolled steel is also one of the most demanding materials in the global market. Its demand is expected to grow in the coming years as more people seek out materials that offer reliable performance for their projects. As such, several producers and suppliers have invested in high-grade cold rolling lines, all of which are guaranteed to provide a high-quality, reliable product.
