Forging forming -- English · 2023年10月9日 0

Creep behavior and application of thermal power forging materials at high temperature

Thermal power forging materials play a key role in thermal power generation equipment, and its performance and stability directly affect the safety and efficiency of thermal power generation equipment. In the high temperature environment, thermal power forging materials will creep phenomenon, resulting in material properties and structure changes, and then affect the operation of the equipment. Therefore, it is of great significance to study the creep behavior and application of thermal power forging materials at high temperature. In this paper, thermal power forging materials are studied and analyzed from two aspects of high temperature creep behavior and application.

Creep refers to the phenomenon of slow deformation of materials under the action of stress under constant temperature conditions. For thermal power forging materials, creep behavior at high temperature is one of its important properties. In the high temperature environment, thermal power forging materials will creep phenomenon, resulting in material deformation and damage. Therefore, it is of great significance to study the creep behavior of thermal power forging materials at high temperature for evaluating their properties and stability.

Creep mechanism
The high temperature creep behavior of thermal power forging materials is the result of many factors, including temperature, stress, material composition and structure. In the high temperature environment, the crystal structure of the material changes and the dislocation movement increases, resulting in the deformation and damage of the material. In addition, defects such as voids and cracks in the material will also accelerate the occurrence of creep.

Influencing factor
Temperature is one of the main factors affecting the creep behavior of thermal power forging materials at high temperature. With the increase of temperature, the lattice energy of the material increases, and the dislocation movement intensifies, leading to the deformation and damage of the material. In addition, stress is also one of the important factors affecting creep behavior at high temperature. The greater the stress, the more serious the deformation and damage of the material. Material composition and microstructure are also important factors affecting high temperature creep behavior. Different materials and structures have different creep resistance properties.

The application of thermal power forging materials in high temperature environment mainly includes power generation and heavy machine manufacturing. The following will discuss the advantages and limitations of thermal power forging materials in these fields.

Power generation field
In the field of power generation, thermal power forging materials are mainly used to manufacture key components of boilers and steam turbines, such as superheaters, reheaters, and main steam pipelines. These components need to operate in a high-temperature environment for a long time, so the material is required to have good high-temperature creep properties and oxidation resistance. Thermal power forging materials can meet these requirements, but creep will still occur during long-term use, leading to deformation and damage of components. Therefore, regular inspection and maintenance of these components are required to ensure the safe operation of the equipment.

Heavy machinery manufacturing field
In the field of heavy machine manufacturing, thermal power forging materials are mainly used to manufacture high temperature and high pressure valves, bearings, connectors and other key components. These components also need to operate in a high-temperature environment for a long time, so the material is required to have good high-temperature creep properties and oxidation resistance. Thermal power forging materials can meet these requirements, but are limited in some applications due to their high cost. In addition, the field of heavy machine manufacturing also has high requirements for the processing performance and welding performance of materials, which also requires in-depth research and development of thermal power forging materials.

The creep behavior and application of thermal power forgings at high temperature are studied in this paper. By analyzing the creep mechanism and influencing factors, it can be found that the creep behavior of thermal power forging materials at high temperature is the result of many factors. In the high temperature environment, thermal power forging materials will creep phenomenon, resulting in material deformation and damage. In the fields of power generation and heavy machine manufacturing, thermal power forging materials have a wide range of application prospects and values, but there are some limitations and challenges. Therefore, it is necessary to conduct in-depth research and development of thermal power forging materials in order to improve their performance and stability, reduce costs and expand the application range. Future research directions can include optimizing the composition and structure of materials, improving processing and welding processes, and developing new creep resistant materials.