News

Home page

Summary of materials used in pressure vessels

Date：

2023-05-05

1. Crystal

Atoms are arranged periodically and regularly in a certain way in three-dimensional space, with fixed melting points and anisotropy.

2. Mesophase

When two components A and B form an alloy, in addition to forming A or B based solid solution, it is possible to form A new phase whose crystal structure is different from that of A and B. Since their positions on the binary phase diagram are always in the middle, these are usually referred to as intermediate phases.

3. Metastable phase

Metastable phase refers to a phase that is not thermodynamically stable, but in the process of rapid cooling to heating, it fails to transform into a stable phase due to the thermodynamic energy barrier or dynamics factors and temporarily stable.

4. Coordination number

The number of atoms close to and equidistant from any atom in a crystal structure.

5. Recrystallization

After the cold deformation of the metal is heated to a certain temperature, the new grain without distortion is generated in the original deformation of the structure, and the property has also been significantly changed and returned to the state before deformation, this process is called recrystallization. (indicates the process in which the new equiaxed grains without distortion gradually replace the deformed ones).

6. Pseudo-eutectic

Under the condition of non-equilibrium solidification, all eutectic structures can be obtained from some subeutectic or hypereutectic alloys. This eutectic structure obtained from non-eutectic alloys is called pseudo-eutectic.

7. Cross slip

When a screw dislocation is blocked on the original slip plane, it may be transferred from the original slip plane to the other slip plane intersecting with it to continue sliding. This process is called cross-slip.

Crystal

We will accelerate the upgrading of the industrial Internet to help achieve high-quality development of the manufacturing industry

Chemical equipment is usually divided into what two categories, the inventory of chemical equipment commonly used

We will accelerate the upgrading of the industrial Internet to help achieve high-quality development of the manufacturing industry

Chemical equipment is usually divided into what two categories, the inventory of chemical equipment commonly used

Our manufacturing industry comprehensive strength continues to improve

The value added of the country's manufacturing sector increased from 16.98 trillion yuan in 2012 to 31.4 trillion yuan in 2021. Wang Wei, head of the planning department of the Ministry of Industry and Information Technology, said that China's manufacturing industry has consolidated its scale advantage over the past decade, and its system integrity has become more prominent.

2023-05-05

We will accelerate the upgrading of the industrial Internet to help achieve high-quality development of the manufacturing industry

The three systems developed in scale, and infrastructure construction was further accelerated. Network facilities with low delay, high reliability and wide coverage have been initially completed, and nearly 2,800 5G virtual private networks and hybrid private networks have been built, with high-quality external networks covering more than 300 cities across the country.

2023-05-05

Summary of materials used in pressure vessels

2023-05-05