This paper introduces the heat treatment technology and quality control in the production of hot forging parts. First of all, the production process of hot forging is outlined, and then the heat treatment technology is discussed in detail, including quenching, tempering, normalizing and surface treatment, etc. Finally, all aspects of quality control are discussed, such as raw material control, process parameter control, product inspection, etc.
Hot forging is an important product in the process of metal processing, and its production process includes heating, forging, heat treatment and finishing. In this process, heat treatment is a key link, which can improve the mechanical properties of metal materials, improve the wear resistance, corrosion resistance and fatigue strength of products.
Heat treatment technology
Quenching: Quenching is the heat treatment process of heating the steel to a critical temperature above, holding it for a period of time, and then cooling it at a speed greater than the critical cooling rate to obtain martensitic structure. Quenching can increase the hardness and strength of steel, but it also reduces its toughness.
Tempering: Tempering is the heat treatment process of heating the quenched steel to a certain temperature below the critical temperature, holding it for a period of time, and then cooling it at an appropriate speed. Tempering can eliminate the internal stress caused by quenching and improve the toughness and fatigue strength of steel.
Normalizing: Normalizing is the heat treatment process of heating steel to above the critical temperature, holding it for a period of time, and then cooling it at an appropriate speed to obtain pearlite structure. Normalizing can improve the strength and hardness of steel, while maintaining good toughness.
Surface treatment: including carburizing, nitriding, induction hardening and other surface hardening technology, can improve the hardness and wear resistance of the product surface.
Quality control
Raw material control: strictly control the chemical composition, mechanical properties and organizational structure of raw materials to ensure that the quality of raw materials meets the standard requirements.
Process parameter control: precisely control the heating temperature, holding time, cooling speed and other key parameters in the heat treatment process to ensure stable product quality.
Product inspection: Using non-destructive testing, metallographic testing, mechanical properties testing and other methods to conduct a comprehensive inspection of the product to ensure that the product meets the quality requirements.
Heat treatment technology and quality control in the production of hot forging are of great significance to improve product quality, reduce cost and enhance the competitiveness of enterprises. Through strict control of raw material quality, precise control of heat treatment process parameters and strengthening product inspection, we can ensure that the quality of hot forging forging is stable and reliable to meet the various needs of customers. In the future, with the progress of science and technology and the development of heat treatment technology, the quality and production efficiency of hot forging forgings will be further improved, and new vitality will be injected into the development of the metal processing industry.