Welcome to the official website of Shandong Forward Group Co., Ltd.!

Tel : +86-18464431000    Contact : Manager Zhang

CONFIRM
11
22

The difference between cold rolling and hot rolling

RELEASE TIME :

2023-07-11 13:23

Cold rolling and hot rolling are two commonly used forming processes for metal materials. They are very different in principle, process flow, mechanical equipment and product performance.

First of all, the principles of cold rolling and hot rolling are different. Cold rolling refers to the process of plastic deformation of metal materials at room temperature, while hot rolling refers to the process of plastic deformation at high temperatures. The main purpose of cold rolling is to form metal materials into the desired shape and size by pressing and stretching, such as cold-rolled steel sheets, cold-rolled steel strips, etc. Hot rolling mainly heats the metal material above its recrystallization temperature, and then undergoes plastic deformation to obtain higher surface quality and better mechanical properties, such as hot-rolled steel plates, hot-rolled steel strips, etc.

Secondly, the process flow of cold rolling and hot rolling is different. The cold rolling process generally includes the steps of raw material preparation, laying, pretreatment, cold rolling, annealing and surface treatment. Among them, the cold rolling process needs to go through multiple cold pressings to achieve the required thickness and size. The hot rolling process generally includes raw material preparation, heating, rough rolling, finishing rolling, cooling, leveling and other steps. In the hot rolling process, metal materials need to undergo plastic deformation at high temperature, so corresponding measures need to be taken to control the temperature and cooling rate to ensure product quality.

Again, the mechanical equipment of cold rolling and hot rolling are different. Cold rolling is generally processed by a cold rolling mill, which is mainly composed of a roller table, a transmission device, a roller system and a cooling device. Hot rolling needs to be processed by a hot rolling mill, which is mainly composed of heating equipment, rolls, roller tables and cooling devices. The hot rolling mill has high strength, high rigidity and wear resistance at high temperature to adapt to plastic deformation at high temperature.

Finally, the properties of cold-rolled and hot-rolled products are different. Due to the cold deformation during cold rolling, cold rolled products have high strength and hardness, but poor plasticity. In the hot rolling process, the grains of the metal material will recrystallize, and the hot rolled product has better plasticity and workability, but lower strength and hardness. Therefore, cold-rolled products are often used in occasions that require high strength and hardness, such as automobile manufacturing and machinery manufacturing, while hot-rolled products are often used in occasions that require high plasticity and workability, such as construction, shipbuilding and home appliance manufacturing. wait.

To sum up, there are obvious differences between cold rolling and hot rolling in terms of principle, process flow, mechanical equipment and product performance. Correct selection of cold rolling and hot rolling processes can obtain metal products that meet different needs.

RELATED NEWS

The production process and characteristics of galvanized sheet

Galvanized sheet is a common metal sheet with many advantages such as corrosion resistance, durability and aesthetics. In terms of manufacturing process, fluorocarbon color-coated board is a commonly used coating material, which has weather resistance and corrosion resistance. This article will introduce the manufacturing process and characteristics of galvanized sheet, focusing on the application of fluorocarbon color-coated sheet.

2023/07/11 13:44

How to install galvanized corrugated sheet?

All in all, the installation of galvanized corrugated panels requires certain skills and experience to ensure the airtightness and stability of the roof. If you do not have relevant experience, it is recommended to have a professional builder or roofing specialist install it.

2023/07/11 13:39

Process performance of hot rolled coil

Hot rolling is a relatively simple product in steel, which can be produced by basically domestic steel mills. It is used for ordinary stamping, bending, and stretching, and can be stored for a long time. It is also called ordinary carbon steel.

2023/07/11 13:27

The difference between cold rolling and hot rolling

To sum up, there are obvious differences between cold rolling and hot rolling in terms of principle, process flow, mechanical equipment and product performance. Correct selection of cold rolling and hot rolling processes can obtain metal products that meet different needs.

2023/07/11 13:23

SAF Coolest v1.3 设置面板NPXSX-ZSSN-XFSWE-ZSE

违禁词： 第一，最，一流，领先，独一无二，王者，龙头，领导者，极致，

无数据提示

Sorry，当前栏目暂无内容！

您可以查看其他栏目或返回 首页

SVG图标库请自行添加图标，用div包起来，并命名使用