Cold-rolled steel is a steel plate obtained by rolling a hot-rolled steel coil and further thinning the No. 1 steel plate to a target thickness under cold rolling conditions at room temperature. Its production process is precisely controlled to obtain iron-based alloys of a certain thickness, width and surface quality.

Cold rolled steel has higher strength and hardness than hot rolled steel and is easier to shape. This is because cold-rolled steel undergoes more processing deformation during the manufacturing process, and the grain size is smaller, forming a more uniform and dense structure.

Because cold-rolled raw coils are relatively brittle and hard and not suitable for processing, cold-rolled steel plates are usually required to be annealed, pickled and surface smooth before being handed over to customers.

The maximum thickness of cold rolling is 0.1--8.0MM or less. For example, the thickness of cold-rolled steel plates in most factories is less than 4.5MM. The minimum thickness and width are determined according to the equipment capabilities and market demand of each factory.

Cold-rolled steel can be constructed in different ways to meet a variety of usage requirements. Depending on the alloying elements and cold rolling process, high-strength steel with high strength and hardness can be produced, as well as stainless steel with excellent corrosion resistance.

In addition, cold-rolled steel can also obtain different surface treatment effects through control of the rolling process, such as galvanizing, aluminum plating, etc., to increase the anti-corrosion and decorative properties of the steel.

Cold rolled steel has a wide range of applications. In the construction field, cold-rolled steel is often used to manufacture building structural materials, such as beams, columns, floor slabs, etc. It has high strength and stiffness, can withstand large loads, and ensures the structural safety of the building.

In the automotive industry, cold-rolled steel is commonly used to manufacture car bodies and body parts. The high strength and lightweight of cold-rolled steel can improve the safety performance and fuel economy of automobiles. In addition, cold-rolled steel is also used in home appliances, electrical appliances and ships to meet various performance requirements.

Cold rolled steel has many advantages.

1. It has high strength and hardness and can withstand large loads and stresses.

2. Cold-rolled steel has good surface quality and processing performance, and can meet the requirements of high-precision processing.

3. Cold-rolled steel has good corrosion resistance and can maintain material stability in harsh environments.

4.The cost of cold-rolled steel is relatively low, the production process is relatively simple, and it can be produced on a large scale, which improves production efficiency.

Cold rolled Steel specifications

Cold rolled steel processing methods

Hot-rolled steel coils are used as raw materials, and the oxide scale is removed by pickling and then cold-rolled continuously. The finished product is hard-rolled coils. Due to the cold work hardening caused by continuous cold deformation, the strength and hardness of the hard-rolled coils increase, and the toughness and plasticity index decreases. ,

so the stamping performance will deteriorate and can only be used for parts with simple deformations.

Hard rolled coils can be used as raw materials in hot-dip galvanizing plants because hot-dip galvanizing units are equipped with annealing lines. The weight of hard-rolled coils is generally 6 to 13.5 tons. The steel coils are continuously rolled on hot-rolled pickled coils at room temperature. The inner diameter is 610mm.