This paper mainly discusses the quality inspection and evaluation method of hydropower forging production. According to the characteristics and demands of hydropower forging production, the traditional quality testing method and modern non-destructive testing method are introduced, and the selection principle of evaluation index is analyzed. On this basis, the paper discusses how to adjust and improve the quality and safety of forgings according to the test results.
Hydropower forging is an important part in hydraulic engineering, its quality and performance directly affect the safety and operation of hydraulic engineering. In order to ensure the quality and safety of forgings, it is necessary to carry out strict quality inspection and evaluation. The purpose of this paper is to discuss the quality inspection and evaluation method of hydropower forgings production, so as to provide decision support and guidance for enterprises.
Traditional quality inspection methods
The traditional quality inspection methods mainly include appearance inspection, size inspection and chemical composition analysis. Appearance inspection is to check whether there are cracks, slag inclusion, oxide and other defects by observing the surface quality of the forging. Size detection is to measure the size and shape of the forging to check whether it meets the requirements of the drawing. Chemical composition analysis is to test the chemical composition of the forgings to check whether it meets the relevant standards.
Modern nondestructive testing methods
Modern nondestructive testing methods mainly include ultrasonic testing, X-ray testing, magnetic particle testing and penetration testing. Ultrasonic testing is to use the propagation characteristics of ultrasonic waves in forging to find internal defects. X-ray testing is the use of X-rays or gamma rays to penetrate the forgings and find internal defects. Magnetic particle detection is the use of magnetic field to find the surface defects of forging. Penetration testing is the use of penetrant penetration action, to find the surface defects of forging.
The selection principle of evaluation index
The selection principle of evaluation index mainly includes scientificity, feasibility and operability. Scientific means that the evaluation indicators should be able to objectively reflect the quality and safety of forging. Feasibility means that the evaluation index should be able to be applied and promoted in actual production. Operability means that the evaluation indicators should be able to be easily measured and calculated.
Quality control
Choose the right materials
Choosing the right material is the premise to ensure the quality and safety of forging. In the selection of materials, the chemical composition, mechanical properties, process properties and other factors should be considered to ensure that the material meets the relevant standards and requirements.
Controlled heating temperature
Controlling the heating temperature is an important link to ensure the quality and safety of forging. In the heating process, the heating temperature and time should be reasonably controlled according to the characteristics of the material and the process requirements to avoid overburning, overheating and other defects.
Reduce internal stress
Reducing the internal stress is an important measure to ensure the quality and safety of forging. In the forging process, reasonable process measures should be taken, such as preheating, slow cooling, etc., to reduce the generation and accumulation of internal stress. At the same time, heat treatment should be carried out after forging to eliminate internal stress and improve the mechanical properties and fatigue resistance of forgings.
Process control and quality management
Process control and quality management are important means to ensure the quality and safety of forgings. In the production process, each process should be strictly controlled and inspected to ensure that each process meets the relevant standards and requirements. At the same time, a perfect quality management system should be established to discover and deal with quality problems in the production process in time to ensure the quality and safety of forgings.
This paper mainly discusses the quality inspection and evaluation method of hydropower forging production. According to the characteristics and demands of hydropower forgings production, the traditional quality testing method and modern non-destructive testing method are introduced, and the selection principle of evaluation index is analyzed. On this basis, the paper discusses how to adjust and improve the quality and safety of forgings according to the test results. In order to ensure the quality and safety of the forging, it is necessary to select the appropriate material, control the heating temperature, reduce the internal stress, and carry out process control and quality management. In the future, with the continuous progress and development of science and technology, the quality detection and evaluation methods of hydropower forgings production will be continuously improved and optimized, bringing greater value and benefits to enterprises.
