I. Raw material preparation
The raw materials of TC23 titanium alloy usually include high purity titanium sponge and other alloying elements such as aluminum and vanadium. The quality of these raw materials directly affects the performance of the final product, so its purity and chemical composition must be strictly controlled.
Melting technology
Vacuum arc melting: vacuum arc melting is one of the melting methods commonly used in the production of TC23 titanium alloy. Under the vacuum environment, the high temperature of the arc is used to melt the raw materials, and the alloy components are evenly mixed by electromagnetic stirring and other means. This method can effectively avoid oxidation and impurity contamination, and improve the purity and quality of the alloy.
Electron beam melting: Electron beam melting technology is also an advanced melting method, which utilizes the high temperature generated by the high-speed impact of the electron beam to melt the raw materials. This method has the advantages of concentrated energy, fast heating speed, precise temperature control, etc. It is suitable for melting of high melting point and high purity materials.
Third, forging technology
Forging of TC23 titanium alloy is an important part of its processing. The forging process requires strict control of forging temperature, forging speed and forging ratio and other parameters to ensure that the organization and properties of the alloy meet the requirements.
Heating temperature: the heating temperature of the forging blank should be higher than the starting forging temperature, generally controlled within a certain range (e.g., 1130~1180°C), in order to avoid cracks and deformation during the forging process.
Forging equipment: the use of advanced forging equipment, such as hydraulic presses, hammer forging machine, etc., in order to improve the precision and efficiency of forging.
Forging process: According to the shape and size of the forgings, choose the appropriate forging process, such as free forging, die forging, etc.. In the forging process, it is also necessary to pay attention to the control of forging deformation to avoid excessive residual stress.
Fourth, heat treatment technology
Heat treatment is an important means to improve the performance of TC23 titanium alloy. Through solution treatment, aging treatment and other heat treatment processes, the residual stress in the alloy can be eliminated, grain refinement, improve strength and toughness.
Solid solution treatment: the alloy is heated to a certain temperature (usually higher than the phase transition point), held for a certain period of time after rapid cooling to obtain a uniform single-phase organization.
Ageing treatment: In the alloy after solid solution treatment, by controlling the heating temperature and time, the reinforcing phases (e.g. Ti3Al, TiAl, etc.) in the alloy are precipitated and uniformly distributed, so as to improve the strength and toughness of the alloy.
V. Precision machining technology
Precision machining of TC23 titanium alloy includes cutting, grinding, polishing and other processes. Due to the high hardness of titanium alloy, low thermal conductivity and easy to chemical reaction with cutting tools, so precision machining is more difficult. In order to improve processing efficiency and quality, the following methods can be used:
Optimization of cutting parameters: choose appropriate parameters such as cutting speed, feed and depth of cut to reduce cutting force and friction resistance.
Adopting advanced processing technology: advanced technology such as high-speed cutting, ultrasonic processing and laser processing can effectively reduce the difficulty of machining and improve the machining accuracy.
Cutting tool design and coating: develop special cutting tools suitable for titanium alloy machining, and improve tool wear resistance and reduce cutting force through surface coating technology.
In summary, the processing technology of TC23 titanium alloy involves many aspects, and it is necessary to strictly control the process parameters and quality requirements of each link to ensure that the performance and quality of the final product meet the requirements.
