Aerospace titanium castings to the successful development of the machine

Why not see rivets it. In fact, this and related processing technology , due to the advances in technology, a large piece of aerospace titanium castings using whole body casting , extrusion and then press through a dedicated , increased density , ( the two years prior aerospace investment castings to the successful development of the machine , once media have reported that this is the aircraft fuselage presses developed specifically for ) , and finally the use of CNC machine tools hollowed out , high-precision machine tools , the entire aerospace titanium castings ( diameter may up to 3 meters ) hollowed out into the shape of the aircraft fuselage , so the aircraft do not need to cover the skin, the skin of the fuselage frame and a aerospace titanium castings are then processed , so do not see rivets.Such a process titanium valve can greatly increase the strength of the aircraft , but also improve the accuracy of processing a lot , this is a revolutionary advancement process of the aircraft fuselage . Aircraft ever built up step by step , first build a aerospace titanium castings , between the frame and bolted punch , then use a rivet on the skin . These processes entirely by hand , the precision is difficult to control , and if the bolt which does not clench or aging can aerospace titanium castings lead to serious disintegration of the entire Titanium investment castings aircraft , light can also cause skin cracking, so planes have to be done to test the static -destructive testing whether the aircraft design strength . And because of the introduction of new processing technology J20 , the whole body is one, to achieve the best strength to do after high air maneuvers lead to the disintegration of the body will no longer appear .

Titanium check valve is widely used in industrial

Titanium check valve because of its high strength, heat resistance, corrosion resistance, widely applied in industry . Especially in aviation, aerospace , shipbuilding and other industries , titanium valve mostly used in the manufacture of titanium check valve key components , its performance is good or bad usually determines the level of the product . Therefore , national research institutions to put a lot of manpower, material and financial resources to carry out its melting titanium check valve and equipment , forming process research and development , writing papers , and many thousands of monographs . However, the study of titanium melting process with little , limited studies have limited studied. Titanium because of its high melting Titanium alloy valve point, chemical activity , thermal properties between the elements of the big difference , so the smelting process of melt composition and temperature control is very difficult, and the melt composition and temperature directly determine the quality of titanium alloy pump . Therefore , to identify qualitative and quantitative variation of melt composition, temperature and process parameters , titanium check valve itself between thermal parameters have important practical significance for guiding titanium melting , smelting practice for other titanium check valve also have important reference value.

Aerospace titanium castings Application Progress

Retardant performance evaluation method to develop a unified standard titanium will effectively promote the exchange of national retardant titanium. Improve the overall mechanical properties of aerospace titanium castings retardant. Compared with flame titanium precision casting  titanium alloy retardant poor mechanical properties, the working temperature is lower. On how to further improve the mechanical properties of the alloy of the need for a deeper study. Reduce the flame titanium costs. Resistant titanium alloy contains a lot of noble metal elements V, resulting in higher costs, limiting its applications. Domestic scholars have adopted partial substitution of lower-priced Mo V for a certain amount of research to try.Composition and performance characteristics of high temperature titanium alloy. Problems flame aerospace titanium castings research and development direction present, except the United States and Russia, some typical titanium retardant has been applied, the study of other countries on the flame is still in the research phase aerospace titanium castings  titanium alloy type flame retardant less costly and flame retardant properties of non-uniform evaluation methods have hindered the development of fire-retardant aerospace titanium castings  Through research, the authors believe that the development direction of the flame Aerospace investment casting mainly: Development of uniform standards and methods of evaluation of aerospace titanium castings flame retardant properties. Properly evaluate flame retardant properties of titanium alloys is one of the key technologies of flame titanium, aerospace titanium castings  including combustion simulation methods and testing techniques. Currently, the evaluation method on the flame retardancy is no uniform standard, countries have adopted different methods of testing.

Titanium alloy valve is often widely

Titanium alloy valve in the civilian industry, because of its material has antioxidant and reducing Titanium sheet medium excellent corrosion properties, especially anti-stable above 100 ℃ reducing hydrochloric acid and sulfuric acid, phosphoric acid, acetic acid, can not be compared with other materials, excellent resistance to corrosion resistance, Shanghai VINCI valve valve titanium alloy valve and titanium alloy valve are wanodizing and other scientific methods to ensure VINCI too valves in reducing medium corrosion resistance and surface hardness of quality assurance. Nickel and nickel alloy valves valve condition medium corrosion resistance targeted, high application cost, are widely used in chemical, petrochemical, metallurgical, nuclear, ocean development, power plants and other industrial fields pipelines desulfurization control aerospace investment castings  to solve the general stainless steel and other metals, non-metallic materials corrosion problems can not be resolved to ensure the pipeline control valves in extremely harsh corrosive medium and long-term safe, reliable and stable operation. Shanghai VINCI valve production of nickel and nickel alloy valves are: pure nickel titanium valve, nickel-chromium alloy valves, nickel-copper alloy valves, nickel-molybdenum alloy valves, nickel-chromium-molybdenum alloy valves.idely used in the harsh conditions of corrosion engineering.

Advantages and disadvantages of the titanium alloy valve and its application

Classification by purpose and role of the cut-off valves are mainly used to cut off or turn on media streaming. Include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly titanium valve  piston valves, ball plug valves, needle valves, and other instruments. Principal titanium alloy valve for regulating the flow of media pressure. Including control valve, throttle, valve and so on. Check Titanium casting type used to prevent the media back. Various structures, including a check valve. Titanium alloy valve for the separation, distribution or mixed media. Including the distribution of various structures such as valves and traps. Class for safety valve overpressure protection when media. Include various types of safety valves.Anodizing and other scientific methods to ensure titanium alloy valve too Titanium alloy valves in reducing medium titanium alloy valve corrosion resistance and surface hardness of quality assurance. Nickel and nickel alloy valves valve condition medium corrosion resistance targeted, high application cost, are widely used in chemical, petrochemical, metallurgical, nuclear, ocean development, power plants and other industrial fields pipelines desulfurization control system.