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Hot Rolling And Cold Rolling Of Stainless Steel Sheets

Oct. 30, 2019

The stainless steel plate refers to a steel plate that is resistant to corrosion by weak media such as atmosphere, steam, and water, and the acid-resistant steel plate refers to a steel plate that is resistant to corrosion by chemical etching agents such as acid, alkali, and salt. Stainless steel sheets are alloy steels that are not easily rusted, but are not absolutely rust-free. The surface is smooth, has high plasticity, toughness and mechanical strength, and is resistant to corrosion by acids, alkaline gases, solutions and other media. Its stainless steel plate has been around since the beginning of the 20th century and has a history of more than a century. Today, the Stainless Steel Plate 904l Factory will come to tell you about hot and cold rolling of stainless steel plates.


304l Stainless Steel Plate


304l Stainless Steel Plate


Hot rolling: Relative to cold rolling, cold rolling is rolling at a temperature lower than the recrystallization temperature, and hot rolling is rolling at a temperature higher than the recrystallization temperature.


Its characteristics:

1. Poor patience and appearance flatness, low quotation;

2. The temperature of hot rolling is similar to the temperature of casting;

3. The hot plate is made of hot-rolled processing and has oxide scale on the outside;

4. Because of its production and manufacturing technology, it makes it more in civilian use, such as kitchen utensils, usually household appliances;

5. Hot-rolled steel sheet, mechanical properties are far less than cold processing, second only to casting processing, but has good resistance and ductility.


Cold rolling: It is processed and rolled on the basis of hot rolled coil, which is usually a hot rolling-pickling-cold rolling process. Although the steel plate is heated during the processing because of rolling, it is still called cold rolling. Because of the cold rolling of hot rolling after successive cold deformation, the mechanical properties are relatively poor and the hardness is too high. It is necessary to anneal to restore its mechanical properties, and there is no annealing called hard rolling. Rolled hard rolls are usually used to make goods that do not need to be bent or stretched.


Its characteristics:

1. Cold-rolled steel sheet has low tolerance due to a certain degree of work hardening, and the price is relatively expensive;

2. The surface of cold-rolled processing has no scale and good quality;

3. The product made by cold deformation has high precision and good appearance quality;

4. Cold rolling is widely used in various industries because of its production technology, such as various cold stamping parts, cold rolled cold extruded profiles, cold coil springs, cold drawn wires, cold head bolts, etc.


With the development of society, hot-rolled stainless steel sheets are widely used. Let us introduce the use of hot-rolled stainless steel sheets in real life:


1. Structural steel is used for the production of general structural steel and welded structural steel, mainly used in the production of steel structural parts, bridges, ships and vehicles.

2, weather-resistant steel added special elements (P, Cu, C, etc.), has good corrosion resistance and atmospheric corrosion resistance, used in the production of containers, special vehicles, also used in building structures, such as 316l Stainless Steel Sheet Metal.

3. High-strength steel plates with good welding performance for automotive structural steel, used in the production of automotive FRAME, WHEEL and so on.

4, hot-rolled special steel - general mechanical structure carbon steel, alloy steel, tool steel, after heat treatment engineering for the production of various mechanical parts.

5, cold-rolled original board for the production of a variety of cold-rolled products, including CR, GI, color coated panels.

6, stainless steel plate has good corrosion resistance, mainly used in food industry, surgical equipment, aerospace, petroleum, chemical and other industries.


Through the above brief introduction, we find that the use of hot-rolled stainless steel plates in real life is particularly extensive! In addition, the application of stainless steel plates in the food industry is also everywhere, such as tableware, cabinets, etc., mainly used as food-grade stainless steel called 304l Stainless Steel Plate.

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