Thermal power forging is an important component in thermal power generation industry, its quality and performance directly affect the operating efficiency and safety of thermal power generation equipment. In order to meet the higher usage requirements, dimensional precision control technology plays a vital role in the production of thermal power forgings. This paper will analyze and discuss the dimensional precision control technology in the production of thermal power forgings.
Forging technology
Forging is a metal processing method that uses pressure or impact force to deform metal billets and obtain the desired shape and size. In the production of thermal power forgings, forging technology is the key link to realize dimensional precision control. Through reasonable forging process and advanced forging equipment, the dimensional accuracy and shape accuracy of forging parts can be effectively controlled.
Warm treatment technology
Thermal treatment is a metal processing method that uses heating and cooling methods to change the structure and properties of metal materials. In the production of thermal power forgings, thermal treatment technology can improve the mechanical properties and dimensional stability of forgings. Through the reasonable temperature treatment process, the forging stress can be effectively eliminated, the grain can be refined, the microstructure can be improved, and the dimensional accuracy and stability of the forging can be improved.
Quenching heat treatment technique
Quenching heat treatment is a kind of metal processing method to obtain martensitic structure of metal materials by rapid cooling method. In the production of thermal power forgings, the hardening heat treatment technology can improve the hardness and wear resistance of the forgings. The hardness, microstructure and dimensional accuracy of forgings can be effectively controlled by reasonable quenching heat treatment process.
Precision control
Tool design and selection
In the production of thermal power forgings, the design and selection of tools have an important influence on the control of dimensional accuracy. Reasonable tool design and selection can effectively reduce the forging force and forging temperature, reduce the non-uniformity of material deformation and the generation of oxide skin, so as to improve the dimensional accuracy and surface quality of the forging. For example, the use of multi-directional forging die can reduce the deformation resistance of the material, improve the plasticity of the material, so as to obtain better dimensional accuracy and shape accuracy.
Process parameter control in forging process
In the production process of thermal power forging, the control of forging parameters has an important effect on the dimensional accuracy. By reasonably controlling the forging temperature, deformation speed and deformation amount, the flow and deformation behavior of the material can be effectively controlled, so as to reduce the uneven deformation and internal defects of the material, and improve the dimensional accuracy and mechanical properties of the forging. For example, the forging process with high temperature and low strain rate can reduce the deformation resistance of the material and improve the plasticity of the material, thus obtaining better dimensional accuracy and shape accuracy.
Temperature and time control during heat treatment
In the production of thermal power forgings, the control of temperature and time during heat treatment has an important effect on dimensional accuracy. By reasonably controlling the process parameters such as heating temperature, holding time and cooling speed, the forging stress can be effectively eliminated, the grain can be refined, the structure can be improved, and the dimensional accuracy and stability of the forging can be improved. For example, the use of segmented quenching process can reduce the generation of quenching cracks, improve the hardness and wear resistance of forgings, so as to obtain better dimensional accuracy and performance.
Taking a thermal power forging production enterprise as an example, the enterprise adopts a variety of dimensional precision control technologies in the production process, such as multi-direction forging die, high temperature and low strain rate forging process and stage quenching process. Through the application of these technologies, the company has successfully controlled the dimensional accuracy of the forging within ±0.5mm, while improving the mechanical properties and surface quality of the forging. In addition, the company also adopts advanced measuring equipment and quality control system to monitor and manage the dimensional accuracy in the production process in real time, so as to discover and solve potential quality problems in time. The implementation of these measures has not only brought economic benefits to enterprises, but also contributed to improving the operational efficiency and safety of thermal power generation equipment.
This paper introduces the dimensional precision control technology in thermal power forging production, including the design and selection of tools, the control of process parameters in forging process, the control of temperature and time in heat treatment process. The dimensional accuracy and quality stability of thermal power forgings can be effectively improved by reasonable application of these technologies to meet higher requirements. In the future, with the continuous development of science and technology and the continuous improvement of environmental protection requirements, the dimensional precision control technology in the production of thermal power forgings will continue to improve and innovate, and make greater contributions to the sustainable development of enterprises and the improvement of social environment.
