Summary of the main uses of SUS 321

1. High temperature engineering field High temperature equipment and parts: Since SUS321 stainless steel has excellent high temperature resistance and can still

1. High temperature engineering field
High temperature equipment and parts: Since SUS321 stainless steel has excellent high temperature resistance and can still maintain good mechanical properties and corrosion resistance at high temperatures, it is often used to manufacture high temperature equipment and parts, such as heat exchangers, heat pipes, hot air furnaces, stoves and burners.
Aerospace field: In the aerospace field, SUS321 stainless steel has extremely important applications in high temperature and high pressure environments due to its heat resistance, corrosion resistance and high strength, such as aircraft engine exhaust systems, turbine blades, rocket engines, etc.
2. Chemical industry
Chemical equipment: SUS321 stainless steel has good corrosion resistance in acid and alkali environments, so it is widely used in the chemical industry, such as manufacturing storage tanks, pipelines, reactors and pumps, and is suitable for various chemical production environments.
Oil and gas extraction: In the process of oil and gas extraction, SUS321 stainless steel is often used to manufacture pipelines, valves, pumps and storage equipment to meet the requirements of high temperature, high pressure and strong corrosion.
3. Food processing field
Food processing equipment and containers: SUS321 stainless steel meets food grade safety standards and is often used in the manufacture of food processing equipment and containers, such as food processing machinery, food storage tanks and food delivery pipelines.
4. Medical field
Medical equipment: Due to its good biocompatibility and corrosion resistance, SUS321 stainless steel is often used in the manufacture of medical equipment and medical devices, such as surgical instruments, medical needles and implants. Its high temperature strength can ensure long-term stable mechanical properties without adverse reactions.
5. Other high-end fields
High-end manufacturing: SUS321 stainless steel has excellent comprehensive properties and has broad application prospects in other high-end fields, such as nuclear magnetic resonance systems, semiconductor manufacturing equipment, high-end automotive parts, etc.
6. Heat treatment process and steam turbine manufacturing
Heat treatment process: In the process of metal heat treatment, SUS321 stainless steel is used as high-temperature furnaces, heat treatment baskets and other high-temperature resistant equipment.
Steam turbine manufacturing: used to manufacture steam turbine burners, high-temperature components of gas turbines, and other components that require high temperature resistance and oxidation resistance.

stainless steel processing

The manufacture of stainless steel involves a series of processes. First, the steel is melted, and then it is cast into solid form. After various forming steps, the steel is heat treated and then cleaned and polished to give it the desired finish. Next, it is packaged and sent to manufacturers, who weld and join the steel to produce the desired shapes.

The raw materials that constitute a stainless steel item are placed together and melted in a giant electric furnace. Intense heat is applied rigorously for a period of 8 to 12 hours during this step. Once the melting is complete, the molten steel is cast into desired semi-finished forms. Some of the most common forms or shapes include slabs, blooms (rectangular shapes), billets (these could either be round or square), rods, and tube rounds.

In the second stage, the semi-finished steel shapes undergo a series of forming operations. For instance, the stainless steel is hot rolled (heated and passed through enormous rolls). The blooms and billets mentioned above are converted to bar and wire. The slabs on the other hand are formed into plates, strips or sheets. It is very common to turn semi-finished steel shapes into bars, as it is the most versatile stainless steel form (it comes in all grades and sizes). You have round, square, octagonal, and hexagonal bars, each suitable for a different type of application.

The various stainless steel forms undergo a thorough annealing process during this step. Annealing is another name for heat treatment where the stainless steel is heated and cooled in a controlled environment. The purpose of this heat treatment is to relieve the pent-up stress inside the stainless steel and soften the material to make it more suitable for a wide variety of applications. The people in charge of carrying out the annealing process have to be very careful about the conditions as even the slightest of changes in the temperature, pressure, duration, or cooling rate could result in a faulty product.

During the annealing process, a certain amount of scale appears on the surface of the stainless steel. This scale can be removed using a number of different processes that are collectively known as descaling. Pickling is one of the more common methods of carrying out the descaling process.

The semi-finished, heat-treated, and descaled stainless steel forms are cut into specific shapes in this step. Mechanical cutting is performed with the aid of guillotine knives, blanking, nibbling, and high-speed blades.

Finishing is applied to help the stainless steel product achieve its signature aesthetically appealing appearance. Finishes are also needed to make the stainless steel product smooth and easier to clean, which is a top requirement in sanitary applications.