Thermal power forging is an important component in thermal power generation equipment, its quality and performance directly affect the efficiency and safety of thermal power generation equipment. Therefore, it is very important to select the appropriate thermal power forging materials and analyze their properties. This paper discusses the selection principle and method of thermal power forging materials from two aspects of material selection and performance analysis, and analyzes its performance requirements.
Thermal power forging material selection
Determine the type of material
When selecting thermal power forging materials, it is necessary to consider the chemical composition, mechanical properties, corrosion resistance, oxidation resistance and other properties of the materials. Commonly used thermal power forging materials include carbon steel, alloy steel, stainless steel and so on. Among them, carbon steel has good processability and weldability, but poor wear resistance and corrosion resistance; Alloy steel added alloy elements on the basis of carbon steel to improve the mechanical properties and corrosion resistance of the material; Stainless steel has excellent corrosion resistance and oxidation resistance, but the cost is higher.
Determine material specification
When selecting thermal power forging materials, it is necessary to determine the specifications of the materials according to the specific conditions and requirements of use. For example, for high temperature and high pressure thermal power generation environment, it is necessary to choose materials with high temperature strength and oxidation resistance; For highly corrosive environments, materials with corrosion resistance need to be selected. In addition, factors such as the molding process and processing properties of the material need to be considered.
Determining material properties
When selecting thermal power forging materials, it is necessary to test and evaluate the properties of materials. Common detection methods include chemical composition analysis, mechanical properties test, metallographic structure observation, corrosion resistance test and so on. Through the detection and analysis of these properties, the properties and characteristics of the materials can be fully understood, and the basis for the selection of appropriate materials can be provided.
Performance analysis of thermal power forging
Hardness test
Hardness is one of the important indexes to evaluate the properties of thermal power forging materials. Through the hardness test of the material, the hardness and wear resistance of the material can be understood. Commonly used hardness testing methods include Brinell hardness test, Rockwell hardness test and Vickers hardness test.
Strength test
Strength is another important index to evaluate the properties of thermal power forging materials. The yield strength, tensile strength and impact toughness of the material can be understood through the strength test. Commonly used strength test methods include tensile test, compression test and impact test.
Antioxidant test
Oxidation resistance is one of the important indexes to evaluate the performance of thermal power forging materials in high temperature environment. The oxidation rate and degree of the material under high temperature environment can be understood by the oxidation resistance test. The commonly used antioxidant test methods include thermogravimetric analysis, oxidation weight gain method and oxidation film observation method.
Corrosion resistance test
Corrosion resistance is one of the important indexes to evaluate the performance of thermal power forging materials in corrosive environment. The corrosion rate and degree of the material in different corrosive media can be understood by testing the material’s corrosion resistance. Commonly used corrosion resistance test methods include salt spray test, corrosion immersion test and electrochemical corrosion test.
It is an important guarantee for the normal operation and safety of thermal power generation equipment to select the appropriate thermal power forging material and analyze its performance. When selecting materials, it is necessary to consider the chemical composition, mechanical properties, corrosion resistance, oxidation resistance and other properties of the material, and determine the specifications and performance requirements of the material according to the specific conditions and requirements of use. Through hardness testing, strength testing, oxidation resistance testing and corrosion resistance testing of materials, the properties and characteristics of materials can be fully understood, and provide a basis for the selection of appropriate materials. Therefore, the selection and performance analysis of thermal power forging materials are of great significance in the manufacture and maintenance of thermal power generation equipment.
