Titanium and titanium alloy castings also have a wide range of applications in daily industrial production.

Titanium and titanium alloy castings also have a wide range of applications in daily industrial production. Because titanium and titanium alloys have good corrosion resistance, they are irreplaceable materials for chemical and other corrosion-resistant industries. Widely used in chemical, paper, petroleum, alkali, metallurgy, pesticide and other industries. The main application products are industrial titanium and titanium-palladium alloy casting titanium pumps, titanium fans, various types of valves, such as: globe valves, ball valves, plug valves, gate valves, butterfly valves, check valves, etc.

With the improvement of people's living standards and the improvement of health quality requirements, titanium alloys have been increasingly used in the medical and health field due to their many advantages such as high fatigue strength and super affinity for the human body. Such as: cast titanium alloy hip joint repair parts, knee joint repair parts, human prosthetics, oral repair and so on. The use of titanium alloy precision castings in the field of sports equipment is very large, such as: bicycle accessories, golf heads. Especially the titanium alloy golf head has the largest market capacity, but the casting process is relatively complicated.

At present, the scope of use of titanium and titanium alloy castings is still expanding, and more fields of application are also being studied successively, but there are still some problems: 1. There are few alloy varieties and brands, and the titanium alloys commonly used are basically industrial pure Titanium casting and TC4 alloy casting. 2. The scope of application of castings is small, most of the castings are used in the petrochemical industry (industrial pure titanium castings), and there are few applications in the aerospace and aerospace fields, which makes it difficult to improve the technology and technical level of the titanium casting industry in China. 3. The molding technology is generally backward. Most manufacturers use graphite molding technology (machined graphite and tamped graphite), but investment casting is rarely used. The surface of the casting is relatively rough. 4. The melting equipment is basically a vacuum consumable electrode arc condensing furnace. The melting process is more dangerous, the molten metal is not overheated, which causes defects such as flow marks and cold insulation on the casting surface. Thin-walled parts are formed. difficult.

In order to improve the backward state of production of the titanium casting industry in China and the overall process and technology level of the titanium casting industry in China, the following aspects need to be studied: 1. Improving the existing molding process and studying new binders and molding materials , Simplify the process, shorten the production cycle and reduce production costs. 2. Research and develop new melting and casting equipment and technology, improve superheat of molten metal, improve and improve the fluidity and filling capacity of casting titanium liquid, and create favorable conditions for the development of large and complex thin-walled integral precision castings . 3. Further expand the application of computer simulation solidification technology in titanium alloy casting to improve the quality of castings and reduce the rejection rate of castings. 4. Research and develop various heat treatment processes and thermochemical treatment techniques for titanium alloy castings to improve the microstructure and mechanical properties of titanium alloy castings. 5. Investment casting can only produce small and medium-sized castings. A modeling process for producing larger, cleaner, and more efficient castings should be sought to increase the production capacity of titanium alloy castings.
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