First, the development of titanium casting processing technology
In 1962, the United States Bell (Beal) company successfully developed a vacuum self-consumption arc condensation shell casting technology, titanium castings officially entered the field of industrial production. This technological breakthrough has laid a solid foundation for the wide application of titanium castings. Especially in the 1970s, titanium casting technology began to be widely used in aerospace, greatly promoting the development of this high-tech industry.
Subsequently, titanium alloy large-scale thin-walled precision casting technology has been fully developed and applied. This technology not only improves the material performance of titanium castings, making them close to or equal to aviation titanium forgings but also significantly reduces the cost by about 50%. This cost advantage makes the cast titanium technology has been rapid development, and predicts that the cast titanium technology is expected to achieve the same important position with the deformation of titanium alloy in the future.
Second, the titanium casting processing technology modeling material requirements
The choice of modeling materials is crucial in the processing of titanium castings. To meet the production requirements, cast titanium molding materials need to have a series of characteristics:
High chemical inertness: molding materials must have good chemical compatibility with titanium alloy to avoid chemical reactions in the casting process, affecting the quality of castings.
High refractoriness and thermal shock resistance: the molding material needs to be able to withstand the casting process in a high-temperature environment to ensure that no deformation or cracks occur in the casting at high temperatures.
High strength and uniformity: The strength and uniformity of the molding material are essential to ensure the dimensional accuracy and surface quality of the castings.
Low moisture and gas adsorption capacity: Moulding materials should minimize the adsorption of moisture and gas to reduce defects such as porosity and inclusions in the casting process.
Low thermal conductivity: Proper thermal conductivity helps to control the temperature gradient during the casting process and reduce the generation of thermal cracks.
Inexpensive and non-toxic: Moulding materials should meet the requirements of economy and environmental friendliness to reduce production costs and minimize the impact on the environment.
However, despite the existence of a wide range of molding materials on the market, there is no completely ideal molding material for titanium castings. Therefore, the development of molding materials that are more in line with the needs of titanium casting processing is still one of the important directions for the future development of science and technology.
In summary, the development of titanium casting processing technology is inseparable from the advanced casting technology and suitable molding materials. In the future, with the continuous progress of technology and material innovation, the application field of titanium castings will be further broadened, bringing more possibilities for industrial production.
