The heat treatment of copper forgings can improve the hardness and corrosion resistance of the product by solution treatment and aging treatment. The following is an example of a commonly used heat treatment process: Solution treatment (solution annealing) : The copper forging is heated to a solution temperature so that the alloying elements in it are uniformly dissolved in the solid solution. The solution temperature is usually 860-920 degrees Celsius (depending on the specific alloy composition) and is held for a certain time to ensure the complete formation of the solid solution. Solid solution treatment is helpful to eliminate intergranular phase and sediment, and improve the plasticity and toughness of the material. Rapid cooling: After solution treatment, the copper forgings need to be cooled to room temperature quickly. Rapid cooling methods such as water quenching, wind quenching or salt quenching can be used. Rapid cooling helps to limit the re-precipitation of solid solution elements in the solid solution, thereby maintaining the solid solution effect. Aging treatment (artificial aging) : After solution treatment and rapid cooling, copper forgings require aging treatment. Aging treatment is to keep the solid solution at a certain temperature for a period of time to promote the precipitation of fine precipitates and achieve optimal hardness and corrosion resistance. The aging temperature and time depend on the specific alloy composition and are usually carried out in the range of 150-500 degrees Celsius. The hardness and corrosion resistance of copper forgings can be significantly improved by solution treatment and aging treatment. This is because the solution treatment is beneficial to eliminate the intergranular phase and precipitate inside the copper forging, and improve the plasticity and toughness of the material. The aging treatment helps to precipitate the fine sediment, form a uniform dispersion phase, increase the hardness and strength of the material, and improve the corrosion resistance. It should be noted that in the specific application of the heat treatment process, the specific alloy composition, size and use requirements of copper forgings should be combined to determine the best processing parameters. At the same time, the heating and cooling rates and the holding time during the heat treatment process need to be strictly controlled to ensure stable and excellent product performance.
